%0 Journal Article
%9 ACL : Articles dans des revues avec comité de lecture répertoriées par l'AERES
%A Ranaivomanana, H. S.
%A Jaquemet, S.
%A Ponton, Dominique
%A Behivoke, F.
%A Randriatsara, R. M.
%A Mahafina, J.
%A Léopold, Marc
%T Intense pressure on small and juvenile coral reef fishes threatens fishery production in Madagascar
%D 2023
%L fdi:010088115
%G ENG
%J Fisheries Management and Ecology
%@ 0969-997X
%K bay of Toliara ; ImageJ ; management ; mosquito net trawl ; size ; distribution ; small-scale fisheries
%K MADAGASCAR
%M ISI:001002758600001
%P [13 ]
%R 10.1111/fme.12637
%U https://www.documentation.ird.fr/hor/fdi:010088115
%> https://www.documentation.ird.fr/intranet/publi/2023-08/010088115.pdf
%V [Early access]
%W Horizon (IRD)
%X 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