@article{fdi:010080615, title = {{E}lasmobranch bycatch distributions and mortality : insights from the {E}uropean tropical tuna purse-seine fishery}, author = {{C}lavareau, {L}. and {S}abarros, {P}. {S}. and {E}scalle, {L}auriane and {B}ach, {P}ascal and {A}bascal, {F}. {J}. and {L}opez, {J}. and {M}urua, {H}. and {A}layon, {P}. {J}. {P}. and {R}amos, {M}. {L}. and {R}uiz, {J}. and {M}erigot, {B}.}, editor = {}, language = {{ENG}}, abstract = {{D}espite bycatch of elasmobranch (sharks and rays) being a major concern in most fisheries worldwide, there is a lack of knowledge on their spatio-temporal species distribution, biology (life stage and sex-ratios), as well as their at-haulback mortality rate. {O}bserver data from the {F}rench and {S}panish tropical purse-seine tuna fisheries operating in the eastern {A}tlantic and western {I}ndian {O}ceans between 2005 and 2017 were analysed to investigate elasmobranch bycatch. {D}ata included 24 elasmobranchs species and distribution patterns of catch per unit of effort ({CPUE}) by species and sex-ratio were found to vary with life stages, areas, seasons and fishing modes. {I}n general, higher catches were found in {FAD}-associated sets (>40%) than free tuna school sets (<17%) although this can vary depending on the species. {F}or the large majority of species, a high proportion of juveniles were caught (30.7-100%), apparent at-haulback mortality rates was high (24.3-63.9%) and finally sex ratios was unbalanced (13.3-66.7% of females). {A}reas and seasons identified from these different components should be of interest for the monitoring and management of elasmobranch bycatches.}, keywords = {{B}iodiversity ; {S}patio-temporal distribution ; {L}ife stage ; {S}ex ratio ; {A}t-haulback mortality ; {EUROPE} ; {FRANCE} ; {ESPAGNE} ; {ATLANTIQUE} ; {OCEAN} {INDIEN}}, booktitle = {}, journal = {{G}lobal {E}cology and {C}onservation}, volume = {24}, numero = {}, pages = {e01211 [12 p.]}, ISSN = {2351-9894}, year = {2020}, DOI = {10.1016/j.gecco.2020.e01211}, URL = {https://www.documentation.ird.fr/hor/fdi:010080615}, }