FN Archimer Export Format PT J TI Beyond Post-release Mortality: Inferences on Recovery Periods and Natural Mortality From Electronic Tagging Data for Discarded Lamnid Sharks BT AF Bowlby, Heather D. Benoît, Hugues P. Joyce, Warren Sulikowski, James Coelho, Rui Domingo, Andrés Cortés, Enric Hazin, Fabio Macias, David BIAIS, Gerard Santos, Catarina Anderson, Brooke AS 1:1;2:2;3:1;4:3;5:4,5;6:6;7:7;8:8;9:9;10:10,11;11:4,5;12:3; FF 1:;2:;3:;4:;5:;6:;7:;8:;9:;10:PDG-RBE;11:;12:; C1 Bedford Institute of Oceanography, Fisheries and Oceans Canada, Dartmouth, NS, Canada Institut Maurice-Lamontagne, Fisheries and Oceans Canada, Mont-Joli, QC, Canada School of Mathematical and Natural Sciences, Arizona State University, Glendale, AZ, United States Portuguese Institute for the Ocean and Atmosphere (IPMA, I.P.), Olhão, Portugal Centre of Marine Sciences of the Algarve (CCMAR), University of Algarve, Faro, Portugal Laboratorio de Recursos Pelágicos, Dirección Nacional de Recursos Acuáticos, Montevideo, Uruguay Panama City Laboratory, NOAA Fisheries, Southeast Fisheries Science Center, Panama, FL, United States Department of Fishing and Aquaculture, Universidade Federal Rural de Pernambuco, Recife, Brazil Oceanographic Center of Malaga, Spanish Institute of Oceanography, Málaga, Spain Ifremer, Laboratoire LIENSs, Université de La Rochelle, Nantes, France Ifremer, Laboratoire LIENSs, Université de La Rochelle, Nantes, France C2 MPO BEDFORD INST OCEANOG, CANADA MPO INST MAURICE LAMONTAGNE, CANADA UNIV ARIZONA STATE, USA IPMA, PORTUGAL UNIV ALGARVE, PORTUGAL DINARA, URUGUAY NOAA, USA UNIV FED RURAL PERNAMBUCO UFRPE, BRAZIL EIO, SPAIN IFREMER, FRANCE UNIV LA ROCHELLE, FRANCE SI NANTES SE PDG-RBE IN WOS Ifremer UPR DOAJ copubli-france copubli-europe copubli-univ-france copubli-int-hors-europe copubli-sud IF 5.247 TC 9 UR https://archimer.ifremer.fr/doc/00688/80020/83005.pdf https://archimer.ifremer.fr/doc/00688/80020/83006.xlsx https://archimer.ifremer.fr/doc/00688/80020/83007.pdf LA English DT Article DE ;Natural mortality;recovery period;lamnid sharks;Atlantic;survival;mitigation;bycatch AB Accurately characterizing the biology of a pelagic shark species is critical when assessing its status and resilience to fishing pressure. Natural mortality (M) is well known to be a key parameter determining productivity and resilience, but also one for which estimates are most uncertain. While M can be inferred from life history, validated direct estimates are extremely rare for sharks. Porbeagle (Lamna nasus) and shortfin mako (Isurus oxyrinchus) are presently overfished in the North Atlantic, but there are no directed fisheries and successful live release of bycatch is believed to have increased. Understanding M, post-release mortality (PRM), and variables that affect mortality are necessary for management and effective bycatch mitigation. From 177 deployments of archival satellite tags, we inferred mortality events, characterized physiological recovery periods following release, and applied survival mixture models to assess M and PRM. We also evaluated covariate effects on the duration of any recovery period and PRM to inform mitigation. Although large sample sizes involving extended monitoring periods (>90 days) would be optimal to directly estimate M from survival data, it was possible to constrain estimates and infer probable values for both species. Furthermore, the consistency of M estimates with values derived from longevity information suggests that age determination is relatively accurate for these species. Regarding bycatch mitigation, our analyses suggest that juvenile porbeagle are more susceptible to harm during capture and handling, that keeping lamnid sharks in the water during release is optimal, and that circle hooks are associated with longer recovery periods for shortfin mako. PY 2021 PD APR SO Frontiers In Marine Science SN 2296-7745 PU Frontiers Media SA VL 8 UT 000638237800001 DI 10.3389/fmars.2021.619190 ID 80020 ER EF