@article{fdi:010084243,
  title = {{I}ncreasing numbers of killer whale individuals use fisheries as feeding opportunities within subantarctic populations},
  author = {{A}melot, {M}. and {P}lard, {F}. and {G}uinet, {C}. and {A}rnould, {J}. {P}. {Y}. and {G}asco, {N}. and {T}ixier, {P}aul},
  editor = {},
  language = {{ENG}},
  abstract = {{F}isheries can generate feeding opportunities for large marine predators in the form of discards or accessible catch. {H}ow the use of this anthropogenic food may spread as a new behaviour, across individuals within populations over time, is poorly understood. {T}his study used a 16-year (2003-2018) monitoring of two killer whale {O}rcinus orca subantarctic populations (regular and {T}ype-{D} at {C}rozet), and {B}ayesian multistate capture-mark-recapture models, to assess temporal changes in the number of individuals feeding on fish caught on hooks ('depredation' behaviour) of a fishery started in 1996. {F}or both populations, the number of depredating individuals increased during the study period (34 to 94 for regular; 17 to 43 for {T}ype-{D}). {I}ncreasing abundance is unlikely to account for this and, rather, the results suggest depredation was acquired by increasing numbers of existing individuals. {F}or regular killer whales, a plateau reached from 2014 suggests that it took 18 years for the behaviour to spread across the whole population. {A} more recent plateau was apparent for {T}ype-{D}s but additional years are needed to confirm this. {T}hese findings show how changes in prey availability caused by human activities lead to rapid, yet progressive, innovations in killer whales, likely altering the ecological role of this top-predator.},
  keywords = {killer whales ; depredation ; capture-mark-recapture ; {OCEAN} {INDIEN} ; {TAAF} ; {CROZET}},
  booktitle = {},
  journal = {{B}iology {L}etters},
  volume = {18},
  numero = {2},
  pages = {20210328 [6 p.]},
  ISSN = {1744-9561},
  year = {2022},
  DOI = {10.1098/rsbl.2021.0328},
  URL = {https://www.documentation.ird.fr/hor/fdi:010084243},
}