FN Archimer Export Format PT J TI Toothed whale and shark depredation and bycatch in the longline fishery of French Polynesia BT AF Aminian Biquet, Juliette Tixier, Paul Richard, Gaetan Soehnlen, Marie Thellier, Thibaut Carzon, Pamela Clua, Eric Guinet, Christophe AS 1:1,2;2:3;3:4;4:5;5:5;6:1;7:1;8:2; FF 1:;2:;3:;4:;5:;6:;7:;8:; C1 EPHE, PSL Research University, CRIOBE USR3278 EPHE-CNRS-UPVD, Université de Perpignan, 58 avenue Paul Alduy, Bât. R, 66860 Perpignan, France Centre d’Études Biologiques de Chizé-Centre National de la Recherche Scientifique (CEBC-CNRS), Equipe Prédateurs marins, UMR 7372 CNRS/Université de La Rochelle, 79360 Villiers-en-Bois, France MARBEC, Univ Montpellier, CNRS, Ifremer, IRD, 87 avenue Jean Monnet, 34200 Sète, France Société d’Observation Multi-Modale de l’Environnement, 38 rue Jim Sevellec, 29200 Brest, France Direction des ressources marines, Fare Ute - Immeuble Le caill, 2ème étage - BP 20, 98713 Papeete, Tahiti, French Polynesia C2 UNIV PERPIGNAN, FRANCE CNRS, FRANCE IRD, FRANCE SOMME, FRANCE DIRECT RESSOURCES MARINES, FRANCE UM MARBEC IN WOS Cotutelle UMR copubli-france copubli-univ-france IF 2.4 TC 0 UR https://archimer.ifremer.fr/doc/00869/98103/107367.pdf https://archimer.ifremer.fr/doc/00869/98103/107368.docx LA English DT Article DE ;Fisheries;Elasmobranch and cetacean conservation;Depredation;Bycatch;Pacific AB Marine megafauna feeding on fishery catches (depredation) or being incidentally caught on fishing gear (bycatch) have become important issues. Their socioeconomic and conservation stakes have been increasingly studied across the world fisheries. They remain understudied in the Pacific Ocean, where longline tuna fisheries reported such interactions. In this study, we provide the first assessment of bycatch and depredation by sharks and odontocetes on longlines in French Polynesia between 2000 and 2018, using data from observers reporting, captains’ logbooks, questionnaires and additional monitoring by authors during three fishing trip. We found that less than 2% of the catch had been depredated, and that shark depredation was more common than odontocete depredation. Shark bycatch was important (20,000 sharks annually, 0.5 shark every 1000 hooks) and odontocete bycatch seemed low (13 occurrences in 18 years), though we identified clear reporting flaws. We discuss the range of uncertainty associated with our assessment, based on the current reporting systems, and the potential consequences of depredation and bycatch on tuna fisheries, as well as on shark and odontocete populations in French Polynesia. PY 2024 PD MAR SO Fisheries Research SN 0165-7836 PU Elsevier BV VL 271 UT 001154001100001 DI 10.1016/j.fishres.2023.106928 ID 98103 ER EF