An assessment of local fisheries in Diego-Suarez Bay, Madagascar

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3 Results 3.1 Socio-economic data Percentage of fishermen 50 45 40 35 30 25 20 15 10 5 0 fishing subsistence transport moral obligation Primary interest in the bay Figure 2. Main interest of fishermen in Diego-Suarez Bay (n=27) Number of fishermen 16 14 12 10 8 6 4 2 0 Carangidae (Jacks) Lutjanidae Mullidae Scaridae Siganidae Lethrinidae Serranidae Acanthuridae Labridae Haemulidae Carangidae (Trevallies) aesthetics aethestic religious conservation tourism Caesionidae Pomacanthidae Carcharhinidae Fish / invertebrate families Octopodidae Scrombridae (Mackerel) Scrombridae (Tuna) Holothuria spp. Figure 3. Principal fish/invertebrate families targeted by fishermen in Diego-Suarez Bay (n=21). Carangidae and Scrombridae have been subdivided to differentiate between the two main genre targeted within those families Fishing, subsistence and transport are the three principal interests in Diego-Suarez Bay according to fishermen interviewed (figure 2). Conservation of the bay and its resources was considered to be the main Balistidae Dasyatidae Sphyraenidae 6
interest in the bay by three fishermen (9%). Moral obligation, aesthetic value, religious value and tourism were not considered to be important by any of the fisherman. Targeting multiple families was common among fishermen with 80% targeting three or more. Fishing in Diego-Suarez Bay targets the highest trophic level of coral reef fish, with 57% of the targeted species being piscivores and macroinvertebrate feeders. Carangidae (Jacks), Lutjanidae and Mullidae were the most sought after families, followed by Scaridae, Siganidae, Lethrinidae, Serranidae and Acanthuridae (figure 3). Percentage of fishermen 100 90 80 70 60 50 40 30 20 10 0 Common fish Highest income Gear People like these fish Reason for targeting fish Figure 4. Fishermen’s reasons for targeting fish species (n=40) Percentage of fishermen 100 90 80 70 60 50 40 30 20 10 0 Fishing net Seine net Spear gun Hook and line Fishing Gear Used Used to catching this species Poison Trap Figure 5. Percentage of fishermen using each type of fishing gear (n= 40) Fishermen targeted fish principally due the fish being common and widely available. Income and the availability of gear were less important. Few fishermen targeted fish because they are what people like to eat. Other reasons included targeting species because they are considered to be large spawners, as well as, targeting certain species allows others to thrive The mean number of days spent fishing per week is four, with 33% of fishermen fishing every day during the week. Monday (16%) and Sunday (11%) were the two most popular individual days to go out fishing, 7 Other
Page 1: Frontier Madagascar Environmental R
Page 4 and 5: Suggested Technical Paper citation:
Page 6 and 7: ACKNOWLEDGEMENTS This report is the
Page 8 and 9: EXECUTIVE SUMMARY The artisanal fis
Page 10 and 11: 2 Methods and Materials 2.1 Survey
Page 14 and 15: ut the majority of fishermen do not
Page 16 and 17: Table 3. Fishermen’s opinion on r
Page 18 and 19: Mean number of fish 14 12 10 8 6 4
Page 20 and 21: either poisonous to eat (in the cas
Page 22 and 23: 4 Discussion 4.1 Socio-economic and
Page 24 and 25: elieved that the size has decreased
Page 26 and 27: Identifying where the main fishing
Page 28 and 29: 6 References Adam, M.S., Anderson,
Page 30 and 31: Appendices Sample Questionnaire Fis

An assessment of local fisheries in Diego-Suarez Bay, Madagascar

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