@article{fdi:010082808,
  title = {{I}dentifying partners at sea from joint movement metrics of pelagic pair trawlers},
  author = {{J}oo, {R}. and {B}ez, {N}icolas and {E}tienne, {M}. {P}. and {M}arin, {P}. and {G}oascoz, {N}. and {R}oux, {J}. and {M}ahevas, {S}.},
  editor = {},
  language = {{ENG}},
  abstract = {{H}ere, we present an approach to identify partners at sea based on fishing track analysis, and describe this behaviour in several fleets: pelagic pair trawlers, large and small bottom otter trawlers, mid-water otter trawlers, all in the {N}orth-{E}ast {A}tlantic {O}cean, anchovy purse-seiners in the {S}outh-{E}ast {P}acific {O}cean, and tuna purse-seiners in the western {I}ndian {O}cean. {T}his type of behaviour is known to exist within pair trawlers, since these vessels are in pairs at least during their fishing operations. {T}o identify partners at sea, we used a heuristic approach based on joint-movement metrics computed from vessel monitoring system data and {G}aussian mixture models. {T}he models were fitted to joint-movement metrics of the pelagic pair trawlers, and subsequently used to identify partners at sea in other fleets. {W}e found partners at sea in all of the fleets except for the tuna purse-seiners. {W}e then analysed the connections between vessels and identified exclusive partners. {E}xclusiveness was more common in pelagic pair trawlers and small bottom otter trawlers, with 82% and 74% of the vessels involved in partnerships having exclusive partners. {T}his work shows that there are collective tactics at least at a pairwise level in diverse fisheries in the world.},
  keywords = {collective behaviour ; dyadic joint movement metrics ; fishing tactics ; {G}aussian mixture model ; vessel monitoring system ; {FRANCE} ; {PEROU} ; {ATLANTIQUE} {NORD} {EST} ; {OCEAN} {INDIEN} ; {PACIFIQUE} {SUD} {EST}},
  booktitle = {},
  journal = {{ICES} {J}ournal of {M}arine {S}cience},
  volume = {78},
  numero = {5},
  pages = {1758--1768},
  ISSN = {1054-3139},
  year = {2021},
  DOI = {10.1093/icesjms/fsab068},
  URL = {https://www.documentation.ird.fr/hor/fdi:010082808},
}