(2019) Fishing Gear Exchange Pilot in Madras, Protected Area of Three Bays, Northeast Haiti
Summary — This report details a pilot project in northeast Haiti's Three Bays Protected Area that exchanged small-mesh fishing gear for larger-mesh traps to promote sustainable fishing practices. The project, led by The Nature Conservancy in collaboration with local partners, aimed to improve fish abundance and species diversity by reducing juvenile fish catches.
Key Findings
- The project resulted in a 63% decline in the number of parrotfish caught in traps.
- Fishers caught larger parrotfish, potentially reducing the number of immature fish caught.
- The species composition changed, with more economically profitable species being caught.
- The large mesh traps eliminated the bycatch of ornamental fish species.
- Fishers reported increased income and reduced time at sea.
Full Description
The Gear Swap Pilot Project (GSPP) was implemented under the USAID-funded Caribbean Marine Biodiversity Program (CMBP) in the Three Bays Protected Area (PA3B) of northeast Haiti. The pilot project, led by The Nature Conservancy (TNC) in collaboration with La Fondation pour la Protection de la Biodiversite Marine (FoProBim), aimed to promote sustainable fishing practices and improve fish abundance and species diversity. Over ten months, the project worked with fishers to replace small-mesh traps with large-mesh traps, reducing juvenile catch and bycatch mortality. Seine net fishers were also approached to exchange their nets for large mesh traps, but participation was limited due to concerns about profitability.
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Caribbean Marine Biodiversity Program
Cooperative Agreement No. AID-OAA-A14-00064
Fishing Gear Exchange Pilot in Madras, Protected Area of Three Bays,
Northeast Haiti
Submitted by Caroline Bissada, July 2019
This report is made possible by the generous support of the American people through the United
States Agency for International Development (USAID). The contents are the responsibility of The
Nature Conservancy and its partners (CEBSE, FOPROBIM, C-CAM, and SusGren) and do not
necessarily reflect the views of USAID or the United States Government.
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Table of Contents
Introduction ..................................................................................................................................... 2
Description of fishing area ........................................................................................................................ 4
Landing sites ............................................................................................................................................. 4
Fishing grounds ........................................................................................................................................ 4
Travel and trap placement ........................................................................................................................ 5
Bait .......................................................................................................................................................... 6
Methodology ................................................................................................................................... 7
Equipment ................................................................................................................................................ 7
Trap protocol ............................................................................................................................................ 7
Seine net protocol .................................................................................................................................... 8
Monitoring schedule ................................................................................................................................. 8
Student assistants ..................................................................................................................................... 9
Fishers and warden training .................................................................................................................... 11
Results ........................................................................................................................................... 12
Species composition ............................................................................................................................... 13
Seine net fishery ............................................................................................................................................................. 13
Trap fishery ..................................................................................................................................................................... 14
Small-mesh traps ............................................................................................................................................................ 14
Large mesh-traps ............................................................................................................................................................ 15
GSPP vs Independent surveys ......................................................................................................................................... 21
Catch per Unit of Effort (CPUE) ................................................................................................................ 23
Economic value of catch ................................................................................................................. 24
Fisher perception ........................................................................................................................... 25
Recommendations ......................................................................................................................... 26
Traps & Limitations ................................................................................................................................. 26
Funding & Incentives .............................................................................................................................. 26
Capacity building .................................................................................................................................... 26
Monitoring ............................................................................................................................................. 27
Summary ....................................................................................................................................... 28
References ..................................................................................................................................... 29
Appendix I ..................................................................................................................................... 32
Appendix II .................................................................................................................................... 33
Appendix III ................................................................................................................................... 35
Appendix IV ................................................................................................................................... 36
Appendix V .................................................................................................................................... 38
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Introduction
Throughout Haiti, fish traps and seine nets with small mesh size are typically used by fishers who fish
within the nearshore area. Fishing with this type of gear harvests large quantities of immature fish. It
was clear from visual assessments of fisher’s catch that continuing to harvest fish in this manner would
soon decimate the nearshore fisheries, a resource many Haitians rely on as their sole source of
subsistence.
The Gear Swap Pilot Project (GSPP) was implemented under the United States Agency for International
Development (USAID) funded Caribbean Marine Biodiversity Program (CMBP). The pilot was led by The
Nature Conservancy (TNC) in collaboration with La Fondation pour la Protection de la Biodiversite
Marine (FoProBim) and aimed to promote sustainable fishing practices, improve abundance and species
diversity within the Three Bays Protected Area (PA3B).
Over a period of ten months, the GSPP fisheries consultant along with students from the Université
d’Etat d’Haïti, Campus Henri Christophe de Limonade worked with fishers to replace their small mesh
traps with large mesh traps. This optimized their fishery resource production by substantially increasing
the size of the fish caught in these traps while reducing juvenile catch and bycatch mortality.
Seine net fishers were also approached to exchange their seine nets for large mesh traps as part of the
GSPP. However, seine fishers were reluctant to participate for fear that the use of traps would not be as
profitable as their seine nets. Fishers were also concerned about the loss of their investment in the seine
fishery by having already purchased expensive seine nets. Some seine fishers said they would have
considered participation if the project bought back their nets as part of the incentive package. Some
initial data collection on the seine fishery is presented in this report.
Fishers who participated in the GSPP agreed to exchange two small mesh fish traps for one large mesh
trap, provide access to their catch for data collection, receive a weekly stipend to cover losses potentially
incurred from adaption to fishing with new equipment as well as their ( or a family members’)
participation in the CMBP’s breadfruit flour production supplementary livelihood activity. This
agreement was formalised through a contract between GSPP participants and FoProBim (Appendix 1)
Numerous discussions were held with fishers regarding the size of trap they preferred using (Figure 1)
taking into consideration their varied boat sizes. Although the large mesh size of 6 cm x 5.5 cm (Figure
2) would remain standard, fishers expressed a need for two sizes of traps. This way, fishers with smaller
boats could also participate (Figure 3). As such, two sizes of fish traps were provided (small: 86 cm in
length and large: 186 cm in length) (Figure 4). The exchange ratio remained the same (2:1), irrespective
of the size of fish trap chosen and fishers could choose to have one size or a mix of both sizes.
3
(a) (b)
Figure 1. (a) Discussion with fishers, fisheries consultant and FoProBiM representative on the preferred
fish trap size;(b) Assessing the size of the new large traps with increased mesh size.
Figure 2. GPSS trap mesh with increased gap size of 6.5 cm x 6.5 cm.
Figure 3. GPSS fisher in Caracol with his pirogue that can only accommodate small size traps.
4
(a) (b)
Figure 4. New fish traps with large mesh. (a) small traps and (b) large traps
Description of fishing area
Landing sites
Madras and Caracol Bay are both surrounded by thick mangrove and sea grass beds (Figure 5). The
Caracol Bay landing site is located on a long stretch of beach, roughly 200 m in length. Many fishers land
their catch on the eastern section of the beach close to the main road, mooring their boats slightly
offshore. Other fishers land their catch at various sites along the beach. For the most part, fishers work
with specific vendors (primarily women) who wait for them to return from sea each day. Upon their
return, vendors wade out in knee high water to meet the fishers. Other vendors wait on the beach under
the trees near the landing sites. Some fish are processed directly on the beach while others are taken
away to market in ice boxes.
The Madras landing site is nestled deep within the mangroves and is a fraction of the size of Caracol Bay.
There is a small broken concrete jetty that extends from an inlet within the dense mangroves. Fishers
must traverse mud and muck to get to and from their landing site where some vendors sit, waiting for
the boats to return. Other fishers have vendors which are located in town; their catch is quickly
offloaded and transported via motorcycle to market.
Fishing grounds
The northern coast of Haiti is extremely exposed and is surrounded by a 20 km barrier and fringing reef
system that extends from Bord de mer Limonade to Fort Liberté Bay. This reef system is estimated to
be 1100 ha and cover approximately 10% of the shallow shelf area within the PA3B. Depths range from
1 m to 30 m. A deep 30 m channel separates the reef offshore of the Caracol Bay. Fishers have been
observed using a number of distinct coral reef zones, including reef crests, backreefs, reef walls, patch
reefs, and spur-and-grove reef habitats. Spur-and-groove reefs are found directly in front of Caracol Bay.
On the backreef of the spur and groove lies a descending slope of complex rugose hard corals
interspersed by sand. Reefs are subject to effluent from both the Grande Rivière du Nord and the Cap
Haïtien rivers.
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Figure 5. Map showing the Madras and Caracol landing sites (blue dots) as well as the trap fishing sites
(yellow flags) located on the barrier reef. Dense mangroves can be seen surrounding the landing sites.
A total of 51 coral species, 43 octocoral species, and over 140 species of sponge have been identified
within the PA3B reef habitats (Kramer et al 2016). The most frequent corals are mustard hill coral
(Porites astreoides), lettuce coral (Agaricia agaricites), brain coral (Pseudodiploria strigose), and star
coral (Montastraea cavernosa) (Kramer et al. 2016).
Also found within the shallow reefs of the PA3B is the cup coral (Cladopsammia manuelensis) which
typically occurs as part of deep reefs (>50 m) systems in the Straits of Florida and the Gulf of Mexico
(Kramer et al. 2016).
Caracol Bay has an estimated 4,030 ha of mangrove with an extensive network of channels occurring
throughout. Mangrove stands include the black mangrove (Avicennia germinans), red mangrove
(Rhizophora mangle), white mangrove (Laguncularia racemose) and buttonwood (Conocarpus erectus).
The seaward border and hammock mangroves experience regular tidal action, whilst the landward basin
mangroves only experience periodic flooding. Adjacent to the mangrove stands, are highly productive
seagrass meadows.
Prior to the GSPP fishing took place adjacent to the thick mangrove forests in the Caracol Bay and
Madras bay. Now, with the large mesh traps fishing takes place in deeper water near coral reef habitats.
Travel and trap placement
The closest coral reef is the barrier reef located approximately six km offshore from both the Caracol
Bay and Madras landing sites (Figures 5). One fishing trip takes an average of seven hours. Fishers have
small, open, wooden pirogue boats with makeshift sails and bamboo masts (Figure 7). Fishers primarily
fish in groups of two to four persons, though there may be as many as six per boat. Fishers leave their
landing sites in the dark between 4-6 am and row out to the barrier reef. This takes roughly three hours.
Fishers then haul and re-set their traps (Figure 6). GSPP fishers were provided with one cooler (igloo)
each and fish were placed directly into the cooler after hauling. Ice is a scarce commodity and comes in
the form of a giant block. Most fishers try to obtain ice prior to setting out on their fishing trips to help
preserve the freshness and integrity of the fish, though it is not always possible. The amount of time
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spent at sea then becomes crucial, as spoilage can occur, even when the harvest in placed in coolers
when there is no ice available, as fishers often return to their landing sites by mid-day. Fishers sail back
to their landing sites, which requires less manual effort but can be still be time consuming if the wind is
light (Figure 7).
Large mesh traps were placed along the edge of the barrier reef on both the inner patch reef sections,
the backreef as well as along the slope towards the channel.
(a) (b) (c)
Figure 6. The shallow reef flat “atoll”. (a) Boats can be seen in the channel (La Pase), the edge of the
barrier reef is seen in the distance (right), (b) a Caracol fisher walking on the barrier reef to place small
mesh traps (right), (c) fisher navigates the boat on the shallow reef by pushing with an oar (bottom).
Figure 7. Fishers use wooden pirogues, bamboo oars and masts with sails sown together from pieces of
material.
Bait
Fishers would use seasonal fruit such as mangoes as bait in their traps. However, once they switched to
using large mesh traps the bait proved less efficient. This was likely due to the change in the target
species from herbivorous species found in the mangrove and seagrass meadows to piscivorous species
found on coral reefs and deep slopes. Fishers were counselled by the fisheries consultant to affix small
to medium sized shiny objects to the bottom of their traps so that the reflective object would resemble
prey fish with its movement in the water and attract piscivorous fish into the traps. Fishers reported a
higher rate of success with this new bait type.
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Methodology
Equipment
- Three 5- gallon buckets (5 or 6 buckets for seine net protocol)
- 1 x pulley scale 128 kg x 2 kg
- 1 x hanging hook fishing scale or flat kitchen type scale
- 1x fish measuring board
- Caliper or small measuring tape
- Small bucket to use in conjunction with hanging hook scale
- Slates made from cute Perspex, sanded with sand paper
- Extra sand paper
- Sharpie type permanent marker
- Pencils
- String or flagging tape to hold pencil to slate
- Sponge, soap to wash slates
- Camera (on phone) to record picture of slate prior to washing for permanent record of data
Trap protocol
Small mesh traps are the standard trap used in the Caracol and Madras bays. The size of the mesh
opening is 3.8 cm x 3.8 cm.
For each day fishing, the catch was weighed to get the total biomass, then data was collected on the
species composition, individual fish length and individual fish weight.
Weight (kg) of the empty large bucket using the pulley scale (128 kg x 2 kg)
1. The entire catch is placed in the bucket and weighed (kg) using the pulley scale
2. For each individual fish the following was recorded:
a. The fish species (at minimum the family level).
b. The total length (cm) using a measuring board.
c. The weight (kg) for each fish using a hanging hook fishing scale.
3. For lobster the following was recorded:
a. The carapace length (cm).
b. The weight (kg) for lobster is weighed using a hanging hook fishing scale.
c. The presence or absence of eggs was recorded.
4. Start and end time of the fishing trip (e.g. 5 am to 10 am) was recorded.
5. Soak time (number of days submerged) of the traps is recorded.
6. Number of fishers on each trip (e.g. 2 fishers).
7. A brief description from the fisher of the areas where the traps were placed (e.g. local name of the
area, substrate type, depth) was recorded.
8. Gear type and size (large or small).
weight of bucket with catch (kg) – weight of empty bucket (kg) = total weight of catch
(kg)
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Seine net protocol
The number of fishers that operate one seine net varies between six and eleven depending on the size
of net. A typical seine net is approximately 300 m wide with a mesh size of roughly 1 cm in diameter.
Two boats are needed to place and haul the net and fishers on both boats haul continuously for over 5
hours. Fishing trips can last up to 11 hours, sometimes coming in with no catch at all.
The composition of the catch sample for seine nets was similar to that of the traps. However, the seine
nets caught a much larger volume of small fish.
Data collected from seine nets was exceptionally time consuming because the fish caught were very
small and their individual weight often did not register on the scale. One sample bucket could contain
over 500 individual fish. Data on catch composition were collected from the catch of five seine nets on
five separate days between June 5
th
and July 5
th
, 2018. at the family level and species level when
possible.
Total length (cm) was recorded for each fish in the sample bucket and the weight was obtained when
possible. Total biomass was captured by weighing the entire catch as well as the number of fishers and
the total fishing trip time. Once the catch was landed it was evenly distributed amongst buckets. One
bucket was chosen at random as a subsample to determine species identification and size.
Sampling occurred as follows:
1. All sea snakes, crustaceans, debris and seagrass were removed.
2. The weight (kg) of the empty buckets was taken.
3. The entire catch in all the buckets were equally and randomly distributed.
4. The weight of each bucket filled with fish was taken and the weight of each empty bucket
subtracted (weight of bucket with catch – weight of empty bucket = weight of catch of bucket). All
weights of buckets containing fish were then added to obtain the total weight of the catch.
5. One bucket was randomly selected to subsample the catch in detail
6. For each fish in the subsample:
a. The fish was identified to the species level, at minimum the family level
b. The total length was recorded on the measuring board
c. The mass of the fish was weighed and recorded
With respect to Caribbean spiny Lobster measurements, the size of the lobster’s carapace was recorded
using a caliper or measuring tape. The front of the measuring gauge was place on the front of the
carapace in between the eyes at the forward edge between the rostral horns and the gauge was
extended back along the middle to the rear edge of the carapace.
Monitoring schedule
Monitoring occurred every time a fisher hauled traps from June 30
th
, 2018 to August 29
th
, 2018, then
again from October 20
th
,2018 to November 24
th
, 2018. For each fishing event, data was collected on
species composition, fish length, the weight of individual fish, the weight of the total catch trap size,
weight b1 + weight b2 + weight b3 + weight b4 = total weight(kg)
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number of traps placed, number of traps hauled, the duration of the fishing trip, the number of fishers
and the fishing site.
Student assistants
Education and partnership with the local university was a major component of the GSPP. The pilot
project facilitated nine graduating students from the Université d’Etat d’Haïti, Campus Henri Christophe
de Limonade to improve their capacity in fisheries and coastal ecology. Though there is no Natural
Resource Management or Marine Biology stream, the Geography and Agronomy majors are required to
understand the ecology and biogeography of Haiti’s coastal systems as well as the socio-economic issues
affecting the people of Haiti. Students were also required to write a final research report as part of their
graduation requirement.
Students were given the opportunity to join the fisheries biologist and gain on-site experience receiving
valuable training in field data collection methods, including learning to identify a variety of reef,
mangrove and sea grass species and collect a range of metrics such as total length, fork length and
weight. Students were also allowed to use extra data collected for their own research and the time spent
with fishers to conduct their own additional interviews for their individual projects (Figure 8). A stipend
was given to students to cover expenses such as daily travel to and from the landing sites and food.
Students in groups of four rotated field days with the fisheries biologist. Many of the students also had
an opportunity to experience the reef, mangrove and sea grass ecosystems by participating in excursions
with the fisheries consultant and the fishers.
A database was created to house the large amounts of data collected on species composition, catch per
unit effort and other allometric variables such as total length and weight. The students were trained in
both data entry and data management of the large spreadsheets and were a part of the ongoing socio-
economic discussions with fishers (Figure 8).
With the help of the students, a database of fish species was compiled with both English and Haitian
creole names to facilitate the exchange of information and ensure accuracy of the data being collected.
Some species have their own specific local name whilst others were grouped as families and a generic
family name used (Appendix II, Table I). Students received certificates outlining their achievements
which can be used by them to certify that they have undergone this type of training (Appendix III).
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Figure 8. Training of students in field data collection, species identifcation and data management.
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Fishers and warden training
Fishers, wardens, NGO personnel as well as other stakeholders were trained in in the field in fisheries
management data collection protocols (Figure 9). Groups were kept small (no more than four persons)
to be able to clearly exchange information and to be able to offer valuable hands-on practice without
causing delays to fishers. Presentations on ecosystem processes, key species and invasive species were
given to a variety of stakeholders including fishers, fisheries co-operative members, students, wardens
and fish vendors from different areas of the PA3B.
A large number of fisheries stakeholders from Caracol, Limonade and Fort Liberte expressed interest in
learning data collection methods but did not have the opportunity to participate. Ongoing capacity
building in this area is recommended in the future.
Figure 9. Fishers and wardens acquire training in species identification, and allometric data collection of
the fisheries resources.
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Results
The GSPP was successful in promoting sustainable fishing practices and livelihoods to fishers by reducing
the impact on their juveniles and providing a higher income to fishers, facilitating them fishing less to
earn more money.
Figure 10. Typical catch from the Madras landing site from small mesh traps.
Figure 11. Typical catch from the Madras landing site from large mesh traps.
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Species composition
Seine net fishery
Seine net data was collected from five seine nets early in the data collection period however, it was
discontinued when no seine fishers officially signed up to exchange their nets for traps. Focus then
shifted to compare the catch composition between the small mesh and large mesh size traps.
In one 10 kg sample bucket, 355 fish were identified and measured (Table 1). An extra 100 fish were not
measured from the sample bucket as the fishers were pressed for time to go to market. Of the 355 fish
sampled, 265 were molly millers of the Blenniidae family (Figure 12). Fish size ranged from 2 to 10 cm
with the mean fish length being 6.44 cm. Molly millers inhabit sand bottoms and mudflat areas and grow
to a maximum 12 cm in length.
Parrotfish were the second main family of fish caught (n =71) with seine nets. Most parrotfish captured
were in the juvenile phase making it difficult to identify to the species level. Parrotfish ranged between
3.5 cm and 8.2 cm in length, with the mean being 5.57 cm. The average weight of fish sampled in the
bucket was 0.03kg.
Table 1. Sample species composition by family or species caught in five a standard seine net between June 5
th
and July
5
th
2018. The table provides information on the mean fish total length (TL), the smallest fish’s total length (Min TL) and the
longest fish total length (Max TL).
Family / Species Mean TL cm Min TL cm Max TL cm Number of fish
Filefish 7.05 7.00 7.10 2
Flagfin mojarra 6.15 5.80 6.50 2
Groupers 5.00 5.00 5.00 2
Grunt 6.75 5.00 8.30 5
Jack misc. 7.30 5.90 8.70 2
Molly miller 11.22 5.00 24.90 265
Snappers 7.80 7.80 7.80 1
Parrotfish misc. 6.44 2.00 10.00 71
Blue tang 5.57 3.50 8.20 3
(a) (b)
Figure 12. (A) Basket of catch from seine net; (b) handful of Blenniidae species from seine net catch.
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Trap fishery
Between July and November 2018, small mesh traps were hauled and sampled 36 times. Each fisher
usually sets and hauls between 5 and 25 traps per fishing trip. Data on catch composition including
length (cm) and weight metrics (kg) were collected for all fish and lobster caught in the small and large
mesh traps at the Madras and Caracol landing sites. Three thousand eight hundred and seven (3807)
fish were identified and measured.
Small-mesh traps
Traps with small mesh openings are regularly placed in nursery grounds such as mangrove forests and
seagrass beds as well as on the fringing reef itself. As a result, juvenile reef and mudflat species were
primarily caught. Table 2 shows the diversity of fish caught in in the standard small mesh traps (grouped
by family). Appendix II shows the breakdown of the fish family into species.
Table 2. Diversity of fish grouped by family caught in the standard small-mesh traps. Important ecological and/or
economical species are highlighted in grey. The table provides information on the mean fish total length (TL), the smallest
fish’s total length (Min TL) and the longest fish total length (Max TL); as well as the mean mass/weight of all fish (kg),
weight of the smallest fish (Min weight) and the mass/weight of the heaviest fish (Max weight).
Family Mean TL
(cm)
Min TL
(cm)
Max TL
(cm)
Mean
weight
(kg)
Min
weight
(kg)
Max
weight(kg)
Number
caught
Barracuda 28.82 21.40 38.50 0.15 0.04 0.31 11
Bonefish 21.50 21.50 21.50 0.06 0.06 0.06 1
Butterflyfish 6.67 5.50 7.50 0.01 0.00 0.02 7
Cichlids 18.11 13.40 22.00 0.10 0.04 0.17 11
Damselfish 12.86 9.50 16.50 0.06 0.03 0.09 16
Drum 26.30 26.30 26.30 0.29 0.29 0.29 1
Goatfish 15.87 10.30 19.00 0.05 0.02 0.08 11
Grouper 16.59 11.10 28.60 0.10 0.03 0.42 63
Grunt 12.98 10.00 23.00 0.04 0.01 0.20 124
Hamlet 10.80 10.70 10.90 0.03 0.03 0.03 2
Jacks 21.57 11.40 24.20 0.13 0.02 0.19 11
Mojarra 12.50 9.00 17.30 0.05 0.00 0.63 41
Mullet 12.92 7.84 18.00 0.44 0.07 0.80 2
Needlefish 36.15 33.90 38.40 0.08 0.06 0.09 2
Parrotfish 14.01 8.20 26.50 0.07 0.00 0.55 2707
Porgy 15.89 0.60 30.40 0.10 0.02 0.80 111
Scorpionfish 19.50 19.50 19.50 0.19 0.19 0.19 1
Snapper 15.08 7.70 28.00 0.09 0.02 0.90 90
Snooks 22.14 18.50 28.50 0.09 0.05 0.19 8
Spadefish 19.20 19.10 19.30 0.29 0.29 0.30 2
Squirrelfish 14.72 9.30 18.50 0.04 0.00 0.07 96
Surgeonfish 12.90 7.50 20.00 0.06 0.00 0.29 47
Trumpetfish 45.00 45.00 45.00 0.43 0.43 0.43 1
Wrasse 16.70 12.50 26.70 0.08 0.00 0.28 44
Total 14.25 0.60 45.00 0.07 0.00 0.90 3410
15
There were 2,707 fish of the parrotfish family found in the small mesh traps sampled. Parrotfish were
found in every fishers’ catch each time the catch was sampled. Parrotfish accounted for 79% of the total
catch in the small mesh traps. The number of parrotfish caught per fisher on a sampling day varied
between 1 and 347. On average fishers caught 9 parrotfish per small mesh trap, with a range of 1 to 19
fish per trap. Juvenile parrotfish ranged from 8.30 cm to 26.50 cm in length (mean total length of 14.01
cm) and had a mean weight of only 0.07 kg (Table 2). Only 11% of the sampled parrotfish from the small
mesh traps were found to be sexually mature (Table 4), if a general L50 length at sexual maturity is used.
Other ecologically and economically important species caught in small mesh traps were porgies (n= 111),
snappers (n= 90) and groupers (n= 63), see Table 1. The seabream porgy matures at small lengths, thus
47 % of the seabreams sampled in the small traps could have been mature individuals (see Table 4). On
the other hand, 100% of all snappers caught in small traps were likely to have been sexually immature.
The 11 Great Barracudas whose sizes ranged from 21.4 to 38.5 cm in length (see Table 4) that were
caught were also likely to be sexually immature.
Reef species such as grunts, squirrelfishes and wrasses were harvested in abundance (n= 124, n= 96 and
n= 44). Results show that all wrasses captured were likely to have been sexually mature. However, only
55 % of the squirrelfish and 5% of the grunts caught were sexually mature (see Table 4).
The use of small-mesh traps also caught non-targeted ornamental fish as bycatch such as Butterflyfish
(n=7), Damselfish (n= 16), Drums (n=1) which were discarded by some fishers.
Large mesh-traps
Traps with the large mesh (6 cm x 5.5 cm) are designed to allow small and juvenile fish species to escape
and the bigger, already reproductively active, adult individuals to be retained. The change in mesh size
and subsequent change in fishing grounds was meant to relieve pressure off juveniles, allowing them to
grow to maturity, spawn and hopefully maintain the fish stocks. Table 3 shows the diversity of fish
(grouped by family) caught in CMBP GSPP traps that were designed with larger mesh openings. Appendix
II shows the breakdown of the fish family into species.
Although some parrotfish are still caught in the traps there has been a significant decline from 79% of
total catch in small mesh traps to 16% of the total catch in large mesh traps. Individuals caught in the
new gear are on average 2 cm longer than the parrotfish caught in the small mesh traps. Even the
smallest individual caught in the large mesh trap is 3 cm longer than the smallest fish caught in the small-
mesh traps.
Approximately 30% of the parrotfish caught in the large trap had reached lengths at which sexual
maturation occurs. While the large-mesh traps did not guarantee that only sexually mature parrotfish
would be caught, the fish in the large-mesh traps were larger, and depending on the specific species of
parrotfish, some could potentially be mature (see Table 4).
Like many reef species, parrotfish are protogynous hermaphrodites, changing from female to male once
they reach a certain size. Females have been found to change to males at fork lengths ranging between
26.2 - 47.3 cm (Hawkins and Callum 2003). Overharvesting individuals below the change threshold could
drastically alter the female-male ratios needed to sustain stocks. The large-mesh traps caught larger
individuals and fewer of them potentially increasing the likelihood that the ratios of females to males
would be at an optimal level (Hawkins and Callum 2003).
16
Porgies were the most harvested species in the large traps accounting for 35% of the total catch (n =
89), then parrotfish, 16.6% (n=44), then snappers, 13.5 % (n= 36). Of the porgies, 86% of the seabreams
were likely to have reached sexual maturation (L50 = 8 cm) as were 66% of lane snappers (L50 = 20.6cm)
(see Table 4). The Lane snapper is listed on the IUCN list as near threatened due to a decrease in the
number of mature individuals across its range.
All Caribbean spiny lobster (n=11) harvested in the large traps were mature and had carapace lengths
ranging between 5.5 and 9. 4 cm in length (see Table 4). Additionally, none were egg bearing at the time
of capture.
The large-mesh traps eliminated the by-catch of ornamental fish species entirely.
Large-mesh traps are ineffective (mesh size results in no catch) when placed on the shallow spur and
groove sections of the reef. The use of large-mesh traps has stopped fishers from placing traps directly
on the reef and accordingly has reduced the walking on the reef by fishers.
Table 3. Diversity of fish grouped by family caught in GSPP traps with large-mesh. Important ecological and/or economical
species are highlighted in grey. The table provides information on the mean fish total length (TL), the smallest fish total
length (Min TL) and the longest fish total length (Max TL) and carapace length for spiny lobster*; as well as the mean
weight (kg) of all fish, weight of the smallest fish (Min weight) and the mass/ weight of the heaviest fish (Max weight).
Family Mean TL
(cm)
Min TL (cm) Max
TL (cm)
Mean
weight
(kg)
Min
weight
(kg)
Max
weight
(kg)
Number
caught
Barracuda 35.60 35.60 35.60 0.24 0.24 0.24 1
Billfish 29.70 29.70 29.70 0.10 0.10 0.10 1
Boxfish 27.82 20.00 38.50 0.48 0.18 0.89 5
Drums 23.35 22.70 24.00 0.18 0.16 0.20 2
Goatfish 25.63 23.60 29.00 0.25 0.16 0.32 3
Grouper 25.54 20.70 29.50 0.28 0.15 0.46 7
Grunt 18.41 12.00 30.70 0.11 0.02 0.39 14
Jacks 21.03 11.20 29.50 0.13 0.02 0.26 16
Mojarra 13.12 8.80 27.10 0.05 0.01 0.20 22
Panulirus argus 28.74 5.50* 90.40 0.40 0.15 0.67 11
Parrotfish 16.12 11.20 30.30 0.09 0.02 0.32 44
Porgy 17.06 11.60 32.20 0.10 0.03 0.32 89
Snapper 18.06 12.20 32.60 0.16 0.03 0.75 36
Spadefish 13.20 10.20 18.20 0.10 0.04 0.20 3
Squirrelfish 21.05 16.50 25.60 0.10 0.03 0.16 2
Surgeonfish 12.35 10.10 18.20 0.05 0.03 0.12 6
Scorpionfish 31.50 30.00 33.00 0.38 0.33 0.44 2
Pufferfish 15.00 15.00 15.00 0.07 0.07 0.07 1
Grand Total 18.18 5.50 90.40 0.13 0.01 0.89 265
Other economically important fish harvested in the large-mesh traps were groupers. Of the grouper and
sea bass family caught, two were Nassau grouper or “barré” in Haitian creole (TL = 17 and 13.5 cm) and
one was the red grouper (TL= 29.5). Though the Nassau groupers had not reached sexual maturity, the
red grouper was likely mature (L50=19.9- 19 cm). Other species of grouper such as the yellowfin grouper
were also being caught in the large mesh traps (see Figure 13) though they were not present in traps
during the sampling period. As with the parrotfish, groupers are protogynous hermaphrodites thus, it is
17
important for individuals to reach large enough sizes in order to maintain female-male ratios and ensure
continuity of local populations.
The Nassau grouper is listed as threatened across its biological range under the Endangered Species Act
and is included in Annex III of the SPAW protocol which states that exploitation is allowed but should be
regulated to ensure and maintain the population at an optimal level. Similarly, the yellowfin grouper
(Figure 12), the mutton snapper which was captured in both small and large traps and the lane snapper
are listed as near threatened on the IUCN red list. Fragmented populations and a decline in mature
individuals could pose a threat to stocks in the near future. Currently there are no regulations protecting
these important species in Haiti. As such harvesting these individuals is legal.
Fishers could benefit from trainings on the identification of species at risk and on maturation metrics
such as length at maturity. Being able to identify key species and return them to the water (with
minimum harm to fish) could help protect their stocks going forward. At the moment the large-mesh
trap fishery is limited in scope, size and vessel power however combined with other fishing practices
such as spear fishing, hookah and the use of small-mesh seine nets in the same habitat adds a cumulative
and compounded impact; fishers do apply constant pressure to the fishery as it is their main source of
subsistence.
18
Table 4. Percentage of sexual mature species sampled in traps. Sexual maturation is given as the size at which 50% of the sampled species have reached sexual maturation (L50). If
the L50 was different for males and females the female range was used. When studies obtained varying results, a range was used. The range of fish size (smallest and longest) is
noted as the total length in cm. The number of individuals of each species found in both the small and large mesh nets is noted as well as overall sample size of each species.
Species
Size at L50
(cm)
TL length range (cm) Number of mature individuals Sample size
% mature individuals in the
catch
small mesh large mesh small mesh large mesh small mesh large mesh small mesh large mesh
Atlantic Spadefish
12 19.1 - 19.3 10.2 - 18.2 2 1 2 3 100 33
Banded Butterflyfish 12 5.5 - 7.5 - 0 0 6 0 0 -
Bar Jack 31 11.4 - 20.5 11.2 - 29.5 0 0 3 14 0 0
Blue tang 15 7.5 - 12.0 - 0 0 6 0 0 -
Bluehead wrasse - 18 - - 0 1 0 0 0
Bandtail puffer - - 15 - - 0 1 - -
Bonefish 40 21.5 - 0 0 1 0 0 -
Butterflyfi
- 6.5 - - 0 1 0 - -
Caribbean spiny lobster* 5 - 8 - 5.5 - 9.4 - 11 0 11 - 100
Coney 18.5 11.1 - 22.5 20.7 - 27.0 12 4 60 4 20 100
Flagfin mojarra - 10.0 - 17.3 14.1 - 27.1 - - 22 3 - -
French grunt 15-17 10.0 - 20.7 13.2 - 29.2 6 3 101 3 6 100
Goatfish misc. - 10.3 0 - 0 1 0 - -
Gray snapper 33 13.0 - 26. 1 12.2 - 26.5 0 0 6 5 0 0
Great Barracuda 71.0 - 98.5 21.4 - 38.5 35.5 0 0 11 1 0 0
Grunts misc. - 13.3 - 23 14.1 - 21.0 - - 13 6 - -
Honeycomb cowfish 22.2 0 20.0 - 38.5 - 4 0 5 - 80
Houndfish 51.7 33.9 - 38. 4 - 0 - 2 0 0 -
Indigo hamlet - 10.8 - 10.9 0 - - 2 0 - -
Irish pompano - 10.8- 16.0 9.0 - 17.9 - - 8 11 - -
Jacks misc. - 22.5 - 24.2 19.4 - 20.0 - - 8 2 - -
Lane snapper 20.6 28 15.6 - 30. 5 1 4 1 6 100 67
Longspine Squirrelfish 13.5 11.0 - 18.5 25.6 33 1 85 1 39 100
Marlin 16.4 - 29.7 - 1 0 1 - 100
Majorras misc - 9 - 14.4 - - - 10 0 - -
19
Mutton snapper 45 - 47 12.8 -18.3 12.7 - 25.3 0 0 11 30 0 0
Nassau grouper 48 13.5 - 17 24.4 - 28.7 0 0 2 2 0 0
Oceansurgeonfish 15.1 7.8 - 20.0 10.1 - 18.2 10 1 34 6 29 17
Parrotfish spp. 17 - 23. 8.2 - 26.5 11.2 - 21. 5 252 12 2291 40 11 30
Princess parrotfish 20.1 13.2 20.3 0 1 1 1 0.00 100
Puddingwife - 14.2 - 26.7 - - - 15 0 - -
Lionfish 18.9 - 19.0
30 - 33 - 2 - 2 - 100
Red grouper 18.9 - 19 - 29.5 - 2 0 2 - 100
Red hind - 28.6 - - - 1 0 - -
Redband parrotfish - 9.0 - 26 .1 - - - 130 47 - -
Sailors choice - 12.0 - 18.7 12.0 - 18.7 - - 4 4 - -
Saucereye porgy - 20.5 13.8 - 20.6 - - 1 6 - -
Schoolmaster 25 11.0 - 19.0 14.2 - 32.6 0 1 47 4 0 25
Sea bream 8 9.0 - 30.4 11.6 - 32.2 52 63 110 73 47.27 86
Sergeant major - 9.5 - 16.5 - - - 15 14 - -
Silver jenny 11 14.5 8.8 - 13.8 1 1 1 8 100 12.5
Slippery dick 18.5 15 - 0 - 1 0 0 -
Smallmouth grunt - 7.7 - 20.8 - - - 4 0 - -
Snapper misc. - 10.5 - 18.0 -
- 20 0 0 -
Snook 42 18.5 - 28.5 - 0 - 8 - - -
Spanish grunt 15 - 17 11.5 - 14.2 - 0 - 10 - - -
Spotted drum -
22.7 - 24.0 - - - 2 - -
Spotted goatfish - 15.5 - 19.0 24.3 - - 4 1 0 -
Spotted scorpionfish - 19.5 - - - 1 0 - -
Squirrelfishes misc. 14.5 9.3 - 17.3 16.5 6 1 11 1 52 100
Stoplight parrotfish 16.3 9.6 - 23.5 16.3 -30.3 90 3 283 3 32 100
Striped croaker - 26.3 - - - 1 0 - -
Striped mullet - 7.84 - - - 1 0 - -
Surgeonfish 15.5 10.9 - 16 - 2 - 7 0 29 -
Tilapia - 13.4 - 22.0 - - -
0 - -
Trumpetfish - 45 -
- 11 0 0 -
White grunt - - 30.7 - - 1 1 - -
White mullet - 18 - - - 1 0 - -
Wrasse misc. - 12.5 - 26.5 - - - 26 0 - -
Yellow goatfish 11 15.0 - 16.7 23.6 - 29.0 5 2 6 2 83 100
Yellowtail snapper 19.7 - 26.0 27 26.6 1 1 1 1 100 100
Yellowtail damselfish - 10.8 - - - 1 0 - -
20
(a) (b)
(c)
(d)
(e)
(f)
(g)
Figure 13. (a-f) Examples of the large mature fish caught in the large mesh traps Verne Pierre. (a and
b) Madras GSPP fisher showing his catch from the large-mesh traps. (g) C. Bissada project fisheries
biologist and University of Limonade students having an informal meeting with Caraol fishers Georges
Bertteau and Florvil Emilien (standing).
Fishers regularly catch Caribbean spiny lobster in their large-mesh traps. Although finding
lobster in the large-mesh traps was noted from the onset of the pilot, data collection with
metrics did not begin until the data collection period in October 2018. Therefore, catch data
does not reflect the true number of lobsters being caught in the traps. As lobster represents
an economically beneficial fishery to fishers, continued data collection would prove valuable
in identifying the pressure being applied to this fishery. Calipers to accurately measure
carapace length were brought in and students and fishers were trained in their use (Figure
14). Discussions with fishers were held on assessing the presence and absence of eggs and
fishers agreed of their own volition to return lobsters found with eggs to the sea. No egg-
bearing lobsters were observed during the data collection periods. Eleven, lobsters were
21
caught within the traps and carapace lengths were between 5.5 cm and 10.1 cm (mean 8.3
cm), with a mean weight of 0.4 kg.
Figure 14. Fisheries consultant demonstrating to the students how to correctly measure spiny
lobster.
GSPP vs Independent surveys
Independent fish surveys and interviews with fishers at landing sites were conducted in the
PA3B by the Atlantic and Gulf Rapid Reef Assessment (AGRRA) team and James Miller and
listed in Henwood et al 2017. The extensive list of marine fish species listed in Henwood et al
2017 indicated a near complete absence of typical large predators such as groupers.
Similarly, the CMBP conducted AGGRA surveys of the reef’s biophysical conditions across the
seascape in the PA3B and indicated that “carnivorous fishes are scarce”. Their surveys
revealed 0 barracuda, 0 chubs, 0-3 groupers, 0-6 jacks, 0 porgies and 0 snapper.
However, the data collected for the GSPP in the large mesh traps shows that jacks, porgies
and snappers and mojarras are routinely caught. In only a few weeks of sampling 16 jacks, 89
porgies, 36 snapper, 22 mojarras and 7 groupers were observed. The small mesh traps also
saw barracuda caught, as well as the prior listed species. Observation from ongoing trap
fishers using the large mesh traps continued to show the presence of large predators.
It is possible that the sampling depth (mean depth 7m in 2018) used by the AGRRA protocol
does not represent the true picture of the species composition. Also, surveys conducted by
divers may scare large predators away.
Continued monitoring of the catch composition of the trap fishery as well as the spearfish and
hookah fisheries would provide more insight. The presence of these top predators in the catch
composition of the fishers within the PA3B, highlights not only their presence, but the
importance of the habitat for management. A sustained monitoring program should
therefore be a priority.
The independent surveys by the AGGRA team refer to the Coney (Cephalopholis fulva) filling
the space held by the top predators. While there is not enough data in this study to address
that specifically, their survey showed far fewer predators than were observed in the catch
composition of the GSPP fishers.
22
Other species present in the catch composition of the trap fishery and not observed during
the independent surveys are listed in Table 5 below.
Table 5. Additional marine fish species found within the PA3B not listed in the Protected
Area of Managed Natural Resources of the PA3B Management Plan by Henwood et al 2017.
Scientific name Common name
Sphoeroides spengleri Bandtail puffer
Albula vulpes Bonefish
Eucinostomus malanopterus Flagfin mojarra
Acanthostracion polygonius Honeycomb cowfish
Tylosurus crocodilus Houndfish
Diapterus auratus Irish pompano
Caranx hippos Crevalle jacks
Istiophoridae Marlin
Epinephelus striatus Nassau grouper
Pterois volitans Lionfish
Epinephelus morio Red grouper
Eucinostomus gula Silver jenny
Centropomus undecimalis Snook
Haemulon macrostomum Spanish grunt
Parupeneus spilurus Spotted goatfish
Scorpaena mystes Spotted scorpionfish
Bairdiella sanctaeluciae Striped croaker
Mugil cephalus Striped mullet
Oreochromis niloticus Tilapia
Aulostomus maculatus Trumpetfish
Mugil curema White mullet
Mulloidichthys flavolineatus Yellow goatfish
Chrysiptera parasema Yellowtail damselfish
23
Catch per Unit of Effort (CPUE)
Catch is a function of the biomass of fish in the water as well as the fishing effort used to
harvest them (C = B · qE where q is a catchability coefficient). Often, catch can simply be
divided by effort to get CPUE with the idea that C/E= B · q. Effort however can often vary by
factors such as fisher, area, or size/mesh of a trap. Catch therefore is a function of the
different components that make up effort C = Traps + Soak Time + Fisher (dropping the B · q).
Linear models can then be used to standardize effort across the different factors.
Small mesh and large mesh data sheets were combined and a categorical variable denoting
mesh size was added. The number of traps was considered the unit of effort that was then
influenced by the mesh size, the soak time and the different fishers. Soak time was included
as an offset meaning that the value was simply added into the intercept term in the linear
model instead of having an estimated parameter. Including soak time as an offset recognizes
that soak time is a part of the effort. The CPUE was standardized with a mixed-effects linear
model in the freeware software R with package lme4. The mixed-effects enable the modelling
of the individual fishers (called the random effects) while also producing a single population
level estimate representing the expected value across all fishers (fixed effects). The response
variable was CPUE, the total catch of a fisher (f) in a day (t) divided by the total number of
small or large mesh traps hauled that day.
Ln (CPUE)
f,t
= (β
0
+b
0
)+β
1
Mesh Size
f,t
+offset[Ln(Soak Time)]
f,t
+ε (1) In the model, β
0
is the
intercept and b
0
are the deviations from the intercept to account for the impact of the
different fishers. β
0
is the expected value across all fishers (fixed effect) and b
0
are the
random effects for each individual fisher. To improve model diagnostics and produce a good
fit to the data, the response variable was the natural log of CPUE and the natural
log of soak time was used.
The model fit the data and had reasonable diagnostics. There was a lot of spread in the data
resulting in a fit that was good, but not particularly tight. Soak time did not end up being an
essential component of the model. Including it or removing it made relatively little difference
to the overall fit of the model. This is likely because the majority of the data had a soak time
of two days and the CPUE from a soak time of two days ranged widely. There was also not a
clear relationship between catch and soak time. Fishers caught lots of fish with long and short
soak times and fishers also caught few fish with long and short soak times. Soak time may be
important, particularly with a larger data set and thus it was included in the final model, but
it had limited influence with the current data.
With the estimated parameters, the average CPUE for a small mesh trap and a large mesh
trap assuming a two-day soak time (two days was the most common soak time). The
population level intercept (fixed effect) was used to account for the expected value across all
fishers. The expected value of catch from hauling one small mesh trap is 0.14 kg (95% CI 0.08
- 0.23 kg). The expected value of catch from hauling one large mesh trap is 0.14 kg (95% CI
0.09 - 0.23 kg). The plot shows a box and whisker plot with the median value as the thick
horizontal line and the 25% and 75% quartiles (Figure 15). The values are not significantly
24
different suggesting that fishers using the large mesh traps are getting the same or more catch
per trap and are also getting a higher valued catch for the same amount of effort.
Figure 15. Box and whisker plot of the standardized Catch-Per-Unit-Effort for the small and
large mesh traps with a two-day soak time.
The CPUE conducted using the initial catch data indicates no change in effort using the large
mesh traps though it is thought that this is a result of the small sample size. Fishing using large
mesh traps requires fishers to soak their traps for a longer period (7 days instead of 2 days),
thus intuitively less effort is required for large catch of higher economical value. Continued
monitoring of CPUE would shed more light on the actual values.
Economic value of catch
The size of the fish caught in each type of trap varied greatly. On average fish in the small
mesh traps weighed 0.07 kg whilst fish caught in the larger mesh traps weighed nearly double
at 0.13 kg. Though considerably more fish are caught in the small-mesh traps, they were often
so small that they could not be cleaned and sold as food fish. Instead these fish were sold,
dried and ground up in their entirety to be used in broths, fetching minimal profits (if any) for
the fisher.
On the other hand, each large fish caught in the large-mesh trap is sold to restaurants or
vendors in the market for 200 to 500 gourdes per pound of fish depending on the species.
One Madras fisher commented that although he may only get four to eight fish in his catch,
each fish is now worth between 300 and 500 gourdes. Meaning, two weeks of fishing can earn
up to 4,000 gourdes (approximately USD $ 52.00) using 10 traps which he hauls only once a
week.
25
Another of the Madras fishers earns roughly 10,000 gourdes (approximately USD$ 130.00)
every two weeks hauling ten traps compared to earning 3,000 gourdes per two-week period,
hauling 25 small-mesh traps every two days. Though the fishers now spend a greater amount
on higher quality rope for the traps, net profits earned still outweigh selling the catch from
the small mesh nets.
Fishers have been catching large lobsters in their new traps weighing on average 0.55 kg each.
Lobster sells for an average of 200 gourdes a pound in North East Haiti, earning fishers ~240
gourdes per lobster.
The majority of the GSPP fishers have been very pleased with the financial benefits of using
the large-mesh traps out in deeper water. They now have the potential to earn as much as
the government assigned minimum wage of 500 gourdes per 8-hour day for individuals
working in private companies, financial institutions such as banks, insurance companies and
those in telecommunications (Government minimum wage decree, 2018). Continued
monitoring of the short- and long-term impact of the gear exchange on fisher livelihood would
be beneficial.
Fisher perception
The overall perception by fishers of the CMBP GSPP was that it was successful, and they would
like to see the project continue. Fishers were hesitant to join the project in the beginning as
they were anxious to give up the gear they used in a fishery they had become accustomed to
for fear of losing what little they earned. However, as the project progressed, fishers
consistently returned with larger fish while spending less time at sea. Fishers noticed a
remarkable and consistent difference in catch species with larger fish being caught and more
income being accrued for each fishing event.
Other fishers soon took noticed and wanted to join the pilot resulting in10 more fishers (two
from Caracol bay and eight from Madras) joining the project in December 2018. Even fishers
without their own boats began grouping themselves with other fishers who had boats in order
to participate. There was a learning curve for fishers as they now had to venture further out
to sea, adjust their bait type and figure out a strategic number of soak days to leave their
traps out. However, throughout the duration of the pilot fishers met with the fisheries
consultant regularly to discuss technique, bait and fishing sites.
Fishers have expressed some concern regarding replacing old and broken traps and have yet
to master the economic balancing act of maintaining the optimum number of traps. As a
result, the overall number of traps dwindled as they became unusable from wear and tear.
Fishers have asked for continued support in terms of obtaining new traps and/or repair of
broken ones.
26
Recommendations
Traps & Limitations
Many fishers had lost traps or broken traps throughout the pilot and in the early stages of the
pilot other fishers even appeared to be tampering with these new traps, perhaps as a
territorial measure for fishing grounds. This behavior is not uncommon in trap fisheries. Over
time it appeared that the trap tampering behavior was reduced and fishers were reporting
less loss of equipment resulting from other fishers. Fish traps however do deteriorate over
time, having a life expectancy of approximately 6 months after which they will need to be
repaired or replaced. It is anticipated that fishers will use their own money to buy traps to
either increase the number of traps they have and /or repair damaged traps. Each trap takes
approximately two weeks to build and another day to assemble. There are two main trap
builders in the Madras and Caracol area. Traps are costed according to the number of holes
in the weaving along the trap’s length. A length of 15 weaved holes goes for approximately
400 gourdes whilst a larger trap with 22 weaved holes goes for approximately 1850 gourdes.
The cost of mounting the traps also varies according to the trap size. Smaller traps cost 100
gourdes to mount and larger ones cost 150 gourdes to mount (Table 6). Some fishers
complained that the funnel within the traps was too narrow preventing larger fish from
entering the trap. Suggestions were given to stretch out the mesh surrounding the funnel.
Table 6. The cost in gourdes to build and mount fish traps
Number of weaves holes
per trap (dimension)
Cost of trap
(gourdes)
Mounting cost
(gourdes)
Builder 1 15 600 125
17 1000 200
21 1250 200
Builder 2 15 400 100
17 700 150
21 1100 150
22 1850 150
Funding & Incentives
Funding whether by grant, government stipend or outside source is needed to assist with
repair or purchase of new traps until fishers can earn sufficient income to accommodate
setting funds aside for repair and/or replacement of traps.
Capacity building
Fishers require assistance with long term planning and budgeting to help themunderstand
the balance between the number of traps needed to harvest adequate fish to sustain their
livelihood and the differences in seasonal catch and effort. It is important for fishers to
maintain a miniumum number of traps at all times in order to sustain themselves and so when
27
traps begin to deteriorate funds are needed to repair or replace traps. Currently fishers use
traps until they are no longer viable and continue to fish with fewer and fewer traps, until
they have none left.
Monitoring
Monitoring (ongoing data collection), control (regulatory conditions under which exploitation
can be conducted) and surveillance form an integral part of fisheries management.
Information from monitoring is needed to feed into a management system to assist in making
management decisions.
The type of controls will influence the monitoring and surveillance methods used by the
Haitian fisheries agency. Continued data collection on the trap fishery as well as on the other
fisheries within the PA3B are needed for a comprehensive understanding of fish stocks within
the MPA.
A possible strategy for implementing continued monitoring would be to have data collection
by local staff (students, fishers, rangers) on a part time basis supported by a local supervisor
or staff from the fisheries agency.
Training and refresher trainings for staff on fish identification and allometric analyses prior to
each data collection event should be conducted. Data collected (including photographs)
should be sent daily to the supervisor for review and input into the data base. This would
allow the supervisor to ascertain whether errors in the data collection method had occurred
and whether the standardized method was being employed.
Monitoring should be done biannually during the period of May through September and
November through April to capture differences in catch, effort and site selection, seasonally.
Monitoring should be on going for either two consecutive months (8 weeks) or a minimum of
8 hauls per fisher during that period. This would allow data to be captured should there be
an unforeseen halt in fishing due to weather, boat malfunction or any other reasons.
Each fisher’s catch could be sampled once per week over the four-week period and at a
minimum twice during each sampling period. Fishers generally have a 3 to 7-day soak time,
therefore data collection should occur once a week for each fisher. This would reduce the
effort required by persons undertaking the monitoring.
Table 8: Monitoring schedule for data collection of fisheries
Sampling seasons Frequency per fisher Metrics collected
May - September 8 weeks 8 hauls Species, Total length, Weight, CPUE metrics
November - April 8 weeks 8 hauls Species, Total length, Weight, CPUE metrics
Species should be identified using the English name or in creole using the Haitian
Creole/English species list provided to ensure correct identification of the species.
Photographs should be taken of any unknown fish and sent to the supervisor for
identification.
28
The strategic goal would be that by year three, quality catch and effort data would be
available to allow for simple stock assessment and to aid in management decisions.
Summary
The project showed a 63% decline in the number of parrotfish caught in fisher traps. Fishers
also consistently caught larger parrotfish, potentially reducing the number of immature
parrotfish in their catch. The GSPP objective to reduce the number of this keystone species
caught in fisher traps was also achieved.
The species composition changed with the increased mesh size. Less economically important
reef fish such as Grunts, Squirrelfish, Mojarras and Damselfish were replaced with more
economically profitable species such as Porgies, Snappers, Groupers, Barracuda and Jacks.
Fishers also regularly caught Caribbean spiny lobster in their large-mesh traps which fetch
higher financial returns. Furthermore, the large mesh traps eliminated the by-catch of
ornamental fish species.
Overall the fish caught in the large mesh traps were bigger than the fish caught in the small
mesh traps. On average, fish caught in the large traps were 18.21 cm TL while those caught
in the small mesh traps were 14.25 cm TL. Though the size at which fish reach sexual
maturation varies between species, larger fish will evidently be closer to maturation size than
smaller fish. Thus, the project goal of optimizing the fishery resource production by
substantially increasing the size of the fish caught in their traps and reducing juvenile catch
was attained.
The project started with an initial 10 fishers. Once underway other fishers from the same
landing sites began to notice the improved catch and through a collaboration with Initiative
pour l’Envronnement Intégré en Haïti (IEDIH), a local NGO, 10 more fishers joined the project.
Each fisher also received an incentive package (stipend and cooler). Qualitative data provided
to the fisheries consultant that was collective after the end of the activity showed a continued
increase in large piscivorous fish and crabs being caught.
Another successful outcome of the project was the move from fishing within the mangroves
and seagrass meadows to fishing the outer reef and pelagic zones. Given that the large mesh
traps allowed small fish to escape the traps, fishers were thus forced to fish further offshore.
Continuing the GSPP and increasing the participation, is seen as beneficial by fishers.
Monitoring as well as fisher and stakeholder training should be considered as essential for
the successful management of the protected area.
29
References
Adams AJ, Dahlgren CP, Kellison GT, Kendall MS, Layman CA, et al. (2006) Nursery function of
tropical back-reef systems. Marine Ecology Progress Series 318:287–301
AGRRA. March 15, 2019. Reef biophysical conditions across CMBP seascapes. Caribbean
marine Biodiversity Program. No. AID-OAA-A14-00064
Bell R.J2019. Haiti Trap catch-Per-Unit Effort. The Nature Conservancy. Technical Report
February 14, 2019
Brule, T., Renan, X., Colas-Marrufo, t., Hauyon, Y. and Tuz-Sulub, A.N. (2003) Reproduction in
the protogynous black grouper (Mycteroperca bonaci (Poey)) from the southern Gulf of
Mexico. Fishery Bulletin 101:463-475.
Crabtree, Roy E., Derke Snodgrass, and Christopher W. Harnden. "Maturation and
Reproductive Seasonality in Bonefish, Albula vulpes, from the Waters of the Florida
Keys." Fishery Bulletin 95 (1997): 456–465.
Demartini, Edward & G Howard, K. (2016) Comparisons of body sizes at sexual maturity and
at sex change in the parrotfish of Hawaii: Input needed for management regulations and stock
assessments. Journal of Fish Biology. 88. 10.1111/jfb.12831.
Froese, R. and D. Pauly. Editors. 2018.FishBase. World Wide Web electronic publication.
www.fishbase.org, 10/2018.
Gardner Patrick G., Frazer Thomas K., Jacoby Charles A., Yanong Roy P. E. (2015) Reproductive
biology of invasive lionfish (Pterois spp.), Frontiers in Marine Science. V 2
Government of Haiti. 2018. Minimum wage decree. Le Moniteur. Edition 18. October 2018
Henwood, W.D., Aucoin, S. Turner, M. 2017. The Protected Area of Managed Natural
Resources of the Three Bays (PA3B). Report ondation pour la Protection de la Biodiversité
Marine (FoProBiM), The Nature Conservancy (TNC) and The National Agency of Protected
Areas (ANAP), Haiti
Harley S. J., Myers R. A. & Dunn A. (2001) Is catch–per–unit–effort proportional to
abundance? 380 Canadian Journal of Fisheries and Aquatic Sciences 58, 1760–1772.
Hawkins J, P., Roberts C. M. (2003). Effects of fishing on sex-changing Caribbean parrotfish
Biological Conservation 115 (2003) 213–226
Humann P., Deloach. N. 2019. Reef Fish Identification. New World Publication, 4th Ed. Reef
set,, Reef Fish Identification book by Paul Humann
Hunt von Herbing, I., Hunte, W. 1991. Spawning and recruitment of the bluehead wrasse
Thalassoma bifasciatum in Barbados, West Indies. Mar. Ecol. Prog. Ser Vol. 72: 49-58
30
Igulu, M. M., Nagelkerken, I., Dorenbosch, M., Grol, M. G., Harborne, A. R., Kimirei, I. A.,
Mumby, P. J., Olds, A. D., Mgaya, Y. D. (2014) Mangrove habitat use by juvenile reef fish:
meta-analysis reveals that tidal regime matters more than biogeographic region. PloS
one, 9(12), e114715. doi:10.1371/journal.pone.0114715
IUCN 2019. The IUCN Red List of Threatened Species. Version 2018 -2.
https://www.iucnredlist.ord
Kadison, E & D'Alessandro, Evan & O. Davis, Gideon & Hood, Peter. (2010). Age, Growth, and
Reproductive Patterns of the Great Barracuda, Sphyraena Barracuda, from the Florida Keys.
Bulletin of Marine Science. 86. 773-784. 10.5343/bms.2009.1070
Kimirei IA, Nagelkerken I, Griffioen B, Wagner C, Mgaya YD (2011) Ontogenetic habitat use by
mangrove/seagrass-associated coral reef fishes shows flexibility in time and space. Estuarine,
Coastal and Shelf Science 92:47–58.
Kramer, P, M Atis, S Schill, SM Williams, E Freid, G Moore, JC Martinez-Sanchez, F
Benjamin, LS Cyprien, JR Alexis, R Grizzle, K Ward, K Marks, D Grenda (2016) Baseline
Ecological Inventory for Three Bays National Park, Haiti. The Nature Conservancy: Report to
the Inter-American Development Bank. Pp.1-180
Munro I.L. (1983) "The biology, ecology and bionomics of spiny lobsters (Palinuridae), spider
crabs (Majidae) and other crustacean resources". In J. L. Munro. Caribbean Coral Reef Fishery
Resources. ICLARM Technical Reports. 7(2nd ed.). The WorldFish Center. pp. 206–222
Nagelkerken I (2007) Are non-estuarine mangroves connected to coral reefs through fish
migration? Bulletin of Marine Science80:595–607.
Nyunja J, Ntiba M, Onyari J, Mavuti K, Soetaert K, et al. (2009) Carbon sources supporting a
diverse fish community in a tropical coastal ecosystem (Gazi Bay, Kenya). Estuarine, Coastal
and Shelf Science 83:333–341
Petrere Jr. M., Giacomini H. C. & De Marco Jr. P. (2010) Catch–per–unit–effort: which
estimator is best? 419 Brazilian Journal of Biology 70, 483–491.
Santana F. M., Morize, E. and Lessa R. (2006)Age and growth of the spotted goatfish,
Pseudupeneus maculatus (Bloch, 1793) in Brazil, validated through marginal increment and
oxytetracycline dyes in the sagittae J. Appl. Ichthyol. 22. 132–137
Somerton D. A., Otto R. S. & Syrjala S. E. (2002) Can changes in tow duration on bottom trawl
surveys lead to changes in CPUE and mean size. Fisheries Research 55, 63–70
Stewart john, Rowling Kevin, Hegarty Anne-Marie and Nuttall Alexandra. (2009). Size and age
at sexual maturity of snapper Pagrus auratus in New South Wales 2008/09. Industry &
Investment NSW. www.industry.nsw.gov.au
31
Tupper M.H. 2017. Jamaica Juvenile Fish Review. Report for the Caribbean Marine
Biodiversity Program. The nature Conservancy and the United States Agency for International
Development.
Tyler-Jedlund, Amanda J. (2009) Age, growth, and reproduction of Calamus proridens, the
littlehead porgy, from the northeast Gulf of Mexico. Graduate Theses and Dissertations.
http://scholarcommons.usf.edu/etd/59
Vallès H, Oxenford HA (2014. Parrotfish Size: A Simple yet Useful Alternative Indicator of
Fishing Effects on Caribbean Reefs. PLOS ONE 9(1):
e86291.https://doi.org/10.1371/journal.pone.0086291
32
Appendix I
33
Appendix II
Table: Scientific name, family, species and local Haitian creole name of the fish species caught
in trap fishery.
Scientific family name Family Species Local name (Haitian
creole)
Acanthuridae Surgeonfish Ocean surgeonfish Sirijen
Acanthuridae Surgeonfish Blue tang Sirijen
Albulidae Bonefish Bone fish Banane/ Macabie
Balistidae Triggerfish Queen triggerfish Bous
Belonidae Needlefish Houndfish Zoble
Callinectes Portunidae Blue crab Sirik
Carangidae Jacks Jack misc. Karang piston
Carangidae Jacks Rainbow runner Pilot kola
Centropomidae Snooks Common snook Brochet
Chaetodontidae Butterflyfish Banded butterflyfish Manmzel
Cichlidae Cichlids Tilapia Borama
Clupeidae Herrings Redear hearing Orange/sardine
Coryphaenidae Dolphinfish Dolphinfish Dord
Diodontidae Porcupinefish Burrfish Goumba
Ephippidae Spadefish Atalntic spadefish Wonn
Exocoetidae Flyingfish/halfbeaks Ballyhoo Balawou
Gerreidae Mojarras Silver jenny Gran zèpon
Gerreidae Mojarras Flagfin mojarra Blanch
Gerreidae Mojarras Irish pompano Blanch
Haemulidae Grunts Grunts misc. Kwo Kwo
Holocentrus Squirrelfish Squirrelfish misc. Meryann
Labridae Wrasse Wrass misc. Zirel
Lutjanidae Snapper Gray snapper Sad Mang
Lutjanidae Snapper Mutton snapper Woulèz
Lutjanidae Snapper Yellowtail Kola
Lutjanidae Snapper Lane snapper Sad Dore
Lutjanidae Snapper Schoolmaster Sad Jaune
Lutjanidae Snapper Small mouth Sad dan Chen
Lutjanidae Snapper Snapper misc Sad kout
Monacanthidae Filefish Orange filefish Bous
Mugilidae Mullets Striped mullet Mile
Mugilidae Mullets White mullet Makambi
Mullidae Goatfishes Spotted goatfish Balbaren
Mullidae Goatfishes Yellow goatfish Balbaren
34
Scientific family name Family Species Local name (Haitian
creole)
Ostraciidae Boxfish Spotted trunkfish Kof
Ostraciidae Boxfish scraweled cowfish Kof
Polynemidae Threadfins Barbu Wonn
Pomacentridae Damselfish Yellowtail damselfish Kaka Poul
Pomacentridae Damselfish Threespot damselfish Matlo
Pomacentridae Damselfish Sergeant major Matlo
Pomacentridae Chromis Chromis Bous
Priacanthidae Bigeye Glasseye snapper Sad soleil
Pterois Pteroi volitans Lionfish Juan juan
Scaridae Parrotfish Parrotfish misc. Boutou
Scartella Blennies Molly miller Dwet
Scombridae Mackerels Little tunny Bonit
Scorpaenidae Scorpionfish Spotted scorpionfish Eskopyon
Serranidae Groupers/ sea basses Coney Fen
Serranidae Groupers/ sea basses Groupers misc. vierge
Serranidae Groupers/sea basses Coney Vennkatre
Serranidae Groupers/sea basses Red hind Gris fer
Serranidae Groupers/sea basses Red grouper Bare
Serranidae Groupers/sea basses Black goruper Bare
Serranidae Groupers Grouper misc Savonèt
Serranidae Hamlets Indigo hamlet Makorel
Sparidae Porgies Sea bream Mayonbe
Sparidae Porgies Knobbed porgy Djol
Sphyraenidae Barracuda Great barracuda Bekin
Tetradontidae Pufferfish Checkered puffer Crapo lanme
35
Appendix III
Table with list of participant students and the criteria outlining their training. Certificates have
been given to the students outlining their accomplishments and can be used by them to
certify that they have undergone the training
Prénoms Noms Certificat dans la surveillance des activités de pêche dans les récif
coralliens
Durée
1 Chrisla Ceneus Identification
des espèces
de pêcheries
de récif
coralliens
Collecte de
donnes in situ
des pêcheries
de récif
Liaison technique
/socio-
économique dans
le domaine de
pêche
Introduction à la
gestion des bases
de données
200 heures
2 Marie
Renée
Taloute Identification
des espèces
de pêcheries
de récif
coralliens
Collecte de
donnes in situ
des pêcheries
de récif
Liaison technique
/socio-
économique dans
le domaine de
pêche
Introduction à la
gestion des bases
de données
200 heures
3 Jeff Georges Identification
des espèces
de pêcheries
de récif
coralliens
Collecte de
donnes in situ
des pêcheries
de récif
Liaison technique
/socio-
économique dans
le domaine de
pêche
Introduction à la
gestion des bases
de données
140 heures
4 Jovenel Jeadore Identification
des espèces
de pêcheries
de récif
coralliens
Collecte de
donnes in situ
des pêcheries
de récif
Liaison technique
/socio-
économique dans
le domaine de
pêche
Introduction à la
gestion des bases
de données
200 heures
5 Gérald Hyppolite Collecte de
donnes in situ
des pêcheries
de récif
80 heures
6 Ludwill
Emile
Roll Collecte de
donnes in situ
des pêcheries
de récif
80 heures
7 Johnny Pierre Identification
des espèces
de pêcheries
de récif
coralliens
Collecte de
donnes in situ
des pêcheries
de récif
Introduction à la
gestion des bases
de données
200 heures
8 Markly Philemond Collecte de
donnes in situ
des pêcheries
de récif
80 heures
9 Sandelyn Georges Identification
des espèces
de pêcheries
de récif
coralliens
Collecte de
donnes in situ
des pêcheries
de récif
Liaison technique
/socio-
économique dans
le domaine de
pêche
Introduction à la
gestion des bases
de données
250 heures
36
Appendix IV
Student Training material included a variety of methods. Students were first given the general
body size of the most common fish families which was created for them (see below). They
were also given the AGGRA Fish ID and flash power points. The Reef Fish Identification book
by Paul Humann was always on hand for referencing. Fish length using the fish measuring
board was taught in situ on site as was measuring fish weight.
- Fish family (general body type) identification chart created by C. Bissada
- AGGRA Fish ID ppt
- AGGRA Fish Flash 1, 2 & 3
Student training material created by C. Bissada
Angelfish
Butterflyfish
Surgeonfish
Jacks
Porgy
Chub
Barracuda
Grunts
Snappers
Damselfish
37
Groupers
Sea Basses
Parrotfish
Wrasses
Pufferfish
Porcupinefish
Boxfish
Triggerfish Filefish
38
Appendix V
Names of fishers, rangers and stakeholders trained in some aspects of sustainable fisheries,
invasive species, ecosystem health and data collection protocols.
Name Site Associatio
n
Contact
info
Trainin
g hours
Training type
(Presentatio
n, Field,
Both)
Intereste
d in more
training
Mathieu
Lumina
Derac ASMED 32838285 2 Presentation Yes
Pierre
Franklin
Caracol BMA 38939138 6 Presentation
& Field
Yes
Oscar
Fadius
Phaeton ASPF 43588228 2 Presentation Yes
Joacard
Maudebel
a
Fort Liberte APF 41989986 2 Presentation Yes
Jean
Baptiste
Jose
Bord de
Mer/Limonad
e
OPPBL 36427977 6 Presentation
& Field
Yes
Elot
Jaques
Innocent
Madras APIPD 43262623
,
46022594
6 Presentation
& Field
Yes
Pierre
Garlande
Caracol APDK 34493126 2 Presentation Yes
Thimothe
Evans
Bor de Mer/
Limonade
OPPBL 38359015 2 Presentation Yes