@article{fdi:010060855,
  title = {{G}lobal spatio-temporal patterns in tropical tuna purse seine fisheries on drifting fish aggregating devices ({DFAD}s) : taking a historical perspective to inform current challenges},
  author = {{F}onteneau, {A}lain and {C}hassot, {E}mmanuel and {B}odin, {N}athalie},
  editor = {},
  language = {{ENG}},
  abstract = {{T}his study provides a historical overview of the use of drifting fish aggregating devices ({DFAD}s) in purse seine fisheries since the early 1990s, using global tuna fisheries datasets from the four tuna {R}egional {F}isheries {M}anagement {O}rganizations ({RFMO}s). {T}ropical tuna purse seine fisheries typically target large yellowfin ({T}hunnus albacares) and bigeye ({T}hunnus obesus) tunas on free-swimming schools and skipjack ({K}atsuwonus pelamis) and juveniles of yellowfin and bigeye associated with drifting objects. {DFAD}s have enabled global skipjack catches to markedly increase, and have also introduced major scientific issues for all tuna-{RFMO}s. {I}n particular, they have strongly modified the fishing strategies of purse seiners that fish on a combination of free-swimming and {DFAD}-associated schools. {C}onsequently, the cumulated search time traditionally used to quantify nominal fishing effort to assess the status of tuna stocks is inconsistent and cannot be used to derive time series of abundance indices from catch-per-unit of-effort ({CPUE}). {I}n addition, the lack of information available on the construction, deployment, and use of {DFAD}s has prevented effective monitoring of the fishing pressure over the last two decades exerted by purse seine fleets using this fishing mode. {J}uveniles of tropical tunas represent a substantial proportion of purse seine catch on {DFAD}s in the three oceans, which has raised particular concern for some bigeye stocks that have been subject to overfishing in the past. {C}atches of juvenile tunas by {DFAD} fishing may also result in a decrease in recruitment for fisheries that target adult tunas such as longliners. {I}n addition, some demographic parameters of tunas and other species associated with {DFAD}s may be affected by the resultant habitat modification arising from the widespread deployment of {DFAD}s. {E}vidence in the literature and provided by the ratio-estimator method suggest that fishing {DFAD}-associated schools may result in about 100 000 t of bycatch and discards annually. {I}n addition, there is further potential for ghost fishing related mortality of sensitive species such as marine turtles and pelagic sharks. {I}n this context and following a precautionary approach, we finally discuss the increasing need for all tuna-{RFMO}s to reduce, or at least monitor and control, the use of {DFAD}s to mitigate their adverse effects not only on yellowfin and bigeye stocks but also on open-ocean ecosystems.},
  keywords = {{PECHE} {THONIERE} ; {TECHNIQUE} {DE} {PECHE} ; {SENNEUR} ; {DISPOSITIF} {DE} {CONCENTRATION} {DES} {POISSONS} ; {CAPTURE} ; {VARIATION} {INTERANNUELLE} ; {IMPACT} {DE} {LA} {PECHE} ; {T}una fisheries ; {FAD} ; bycatch ; purse seine fisheries ; {T}hunnus albacares, ; {K}atsuwonus pelamis ; {T}hunnus obesus ; {ZONE} {TROPICALE}},
  booktitle = {},
  journal = {{A}quatic {L}iving {R}esources},
  volume = {26},
  numero = {1},
  pages = {37--+},
  ISSN = {0990-7440},
  year = {2013},
  DOI = {10.1051/alr/2013046},
  URL = {https://www.documentation.ird.fr/hor/fdi:010060855},
}