Horizon 1 1 17 ACL : Articles dans des revues avec comité de lecture répertoriées par l'AERES Fisheries Management and Ecology [13 p.] bay of Toliara ImageJ management mosquito net trawl size distribution small-scale fisheries MADAGASCAR 2023 fdi:010088115 ENG Fisheries Management and Ecology 0969-997X ISI:001002758600001 10.1111/fme.12637 https://www.documentation.ird.fr/hor/fdi:010088115 https://www.documentation.ird.fr/intranet/publi/2023-08/010088115.pdf [Early access] Horizon (IRD) Size-based indicators are appropriate for monitoring status and guiding management of multi-species, multi-gear fisheries, such as coral reef fisheries. From May 2018 to April 2019, size distribution and composition of coral reef fish catches were monitored through a participatory landing survey in southwestern Madagascar. Fishers targeted a large diversity of fish taxa (75 families) and range of sizes (1.6-86 cm). Five predominant gears accounted for most of the catch (1360 [+/- 39] t), including mosquito net trawl (27.7%), beach seine (26.8%), speargun (7.2%), gillnet (30.6%), and handline (7.1%). Due to widespread use of gears made from mosquito nets, 75% of fishes smaller than 9 cm and 47% of juvenile fishes were represented in the total catch number. Large-size taxa (Scaridae, Lethrinidae, Siganidae, Acanthuridae, Synodontidae, Mullidae, and Labridae) were mostly harvested as juveniles. Catches varied by 8%-70% throughout the year. Size of coral reef fish, annual catches, and catch rates all declined since the 1990s. 040 UR250 Madagascar