@article{fdi:010091308,
  title = {{Q}uantifying the impact of habitat modifications on species behavior and mortality : a case study of tropical tuna},
  author = {{D}upaix, {A}. and {D}agorn, {L}aurent and {D}eneubourg, {J}. {L}. and {C}apello, {M}anuela},
  editor = {},
  language = {{ENG}},
  abstract = {{E}cosystems and biodiversity across the world are being altered by human activities. {H}abitat modification and degradation are among the most important drivers of biodiversity loss. {T}hese modifications can have an impact on species behavior, which can, in turn, impact their mortality. {W}hile several studies have investigated the impacts of habitat degradation and fragmentation on terrestrial species, the extent to which habitat modifications affect the behavior and fitness of marine species is still largely unknown, particularly for pelagic species. {S}ince the early 1990s, industrial purse seine vessels targeting tuna have started deploying artificial floating objects-{D}rifting {F}ish {A}ggregating {D}evices ({DFAD}s)-in all oceans to increase tuna catchability. {S}ince then, the massive deployment of {DFAD}s has modified tuna surface habitat, by increasing the density of floating objects, with potential impacts on tuna associative behavior and mortality. {I}n this study, we investigate these impacts for yellowfin tuna in the {I}ndian {O}cean. {U}sing an individual-based model based on a correlated random walk and newly available data on {DFAD} densities, we quantify for the first time how the increase in floating object density, due to {DFAD} use, affects the percentage of time that yellowfin tuna spend associated, which, in turn, directly impacts their availability to fishers and fishing mortality. {T}his modification of tuna associative behavior could also have indirect impacts on their fitness, by retaining tuna in areas detrimental to them or disrupting schooling behavior. {H}ence, there is an urgent need to further investigate {DFAD} impacts on tuna behavior, in particular, taking social behavior into account, and to continue regulation efforts on {DFAD} use and monitoring.},
  keywords = {associative behavior ; correlated random walk ; exploited species ; {F}ish ; {A}ggregating {D}evice ; global change ; individual-based model ; purse seine ; fisheries ; tropical tuna},
  booktitle = {},
  journal = {{E}cological {A}pplications},
  volume = {34},
  numero = {},
  pages = {e3018 [15 ]},
  ISSN = {1051-0761},
  year = {2024},
  DOI = {10.1002/eap.3018},
  URL = {https://www.documentation.ird.fr/hor/fdi:010091308},
}