@article{fdi:010064944,
  title = {{B}ehaviour and vulnerability of target and non-target species at drifting fish aggregating devices ({FAD}s) in the tropical tuna purse seine fishery determined by acoustic telemetry},
  author = {{F}orget, {F}. {G}. and {C}apello, {M}anuela and {F}ilmalter, {J}. {D}. and {G}ovinden, {R}. and {S}oria, {M}arc and {C}owley, {P}. {D}. and {D}agorn, {L}aurent},
  editor = {},
  language = {{ENG}},
  abstract = {{C}haracterizing the vulnerability of both target and non-target (bycatch) species to a fishing gear is a key step towards an ecosystem-based fisheries management approach. {T}his study addresses this issue for the tropical tuna purse seine fishery that uses fish aggregating devices ({FAD}s). {W}e used passive acoustic telemetry to characterize, on a 24 h scale, the associative patterns and the vertical distribution of skipjack ({K}atsuwonus pelamis), yellowfin ({T}hunnus albacares), and bigeye tuna ({T}hunnus obesus) (target species), as well as silky shark ({C}archarhinus falciformis), oceanic triggerfish ({C}anthidermis maculata), and rainbow runner ({E}lagatis bipinnulata) (major non-target species). {D}istinct diel associative patterns were observed; the tunas and the silky sharks were more closely associated with {FAD}s during daytime, while the rainbow runner and the oceanic triggerfish were more closely associated during the night. {M}inor changes in bycatch to catch ratio of rainbow runner and oceanic triggerfish could possibly be achieved by fishing at {FAD}s after sunrise. {H}owever, as silky sharks display a similar associative pattern as tunas, no specific change in fishing time could mitigate the vulnerability of this more sensitive species. {F}or the vertical distribution, there was no particular time of the day when any species occurred beyond the depth of a typical purse seine net. {W}hile this study does not provide an immediate solution to reduce the bycatch to catch ratios of the {FAD}-based fishery in the western {I}ndian {O}cean, the method described here could be applied to other regions where similar fisheries exist so as to evaluate potential solutions to reducing fishing mortality of non-target species.},
  keywords = {{SEYCHELLES} ; {MOZAMBIQUE} {CANAL} ; {OCEAN} {INDIEN}},
  booktitle = {},
  journal = {{C}anadian {J}ournal of {F}isheries and {A}quatic {S}ciences},
  volume = {72},
  numero = {9},
  pages = {1398--1405},
  ISSN = {0706-652{X}},
  year = {2015},
  DOI = {10.1139/cjfas-2014-0458},
  URL = {https://www.documentation.ird.fr/hor/fdi:010064944},
}