@article{fdi:010065456,
  title = {{F}ine-scale 3-dimensional movement behaviour of silky sharks {C}archarhinus falciformis associated with fish aggregating devices ({FAD}s)},
  author = {{F}ilmalter, {J}. and {C}owley, {P}. and {F}orget, {F}. and {D}agorn, {L}aurent},
  editor = {},
  language = {{ENG}},
  abstract = {{T}he silky shark {C}archarhinus falciformis is the primary elasmobranch bycatch in the global tuna purse seine fishery using fish aggregating devices ({FAD}s). {I}nformation on the associative behaviour of this species with floating objects remains limited. {H}ere the use of various electronic tags provided important new insight into this behaviour. {T}hirty-eight juvenile silky sharks (69 to 116 cm total length; {TL}) were tagged with acoustic tags at 9 drifting {FAD}s equipped with satellite-linked acoustic receivers in the western {I}ndian {O}cean (total monitoring = 154 d). {P}resence/absence and swimming depth data were transmitted from the receivers. {A} subset of 17 individuals was also fitted with pop-up satellite archival tags ({PSAT}s; n = 13), or internal archival tags (n = 4). {B}ehavioural data were successfully collected from 20 of the tagged sharks, covering a total of 300 d. {F}ine-scale movements of one individual were observed by active tracking, lasting 2 h 46 min. {S}harks remained associated with the {FAD} where they were tagged for extended periods (2.84 to 30.60 d, mean = 15.69 d). {S}trong diel changes were observed in both {FAD} association and swimming depth. {T}ypically, individuals moved away from {FAD}s after sunset and returned later that night, then remained closely associated until the following evening. {V}ertical behaviour also changed around sunset, with sharks using fairly constant depths, > 25 m, during the day and switching to rapid vertical movements during the night, with descents > 250 m recorded. {T}he actively tracked individual returned to a {FAD} from >1.2 km away. {L}ong residence times and close association highlight the vulnerability of silky sharks to incidental capture in {FAD} fisheries.},
  keywords = {{S}hark ; {B}ehaviour ; {T}elemetry ; {FAD} ; {B}ycatch ; {OCEAN} {INDIEN}},
  booktitle = {},
  journal = {{M}arine {E}cology {P}rogress {S}eries},
  volume = {539},
  numero = {},
  pages = {207--223},
  ISSN = {0171-8630},
  year = {2015},
  DOI = {10.3354/meps11514},
  URL = {https://www.documentation.ird.fr/hor/fdi:010065456},
}