@article{fdi:010077814,
  title = {{L}ocal indicators for global species : pelagic sharks in the tropical northeast {A}tlantic, {C}abo {V}erde islands region},
  author = {{C}oelho, {R}. and {M}acias, {D}. and de {U}rbina, {J}. {O}. and {M}artins, {A}. and {M}onteiro, {C}. and {L}ino, {P}. {G}. and {R}osa, {D}. and {S}antos, {C}. {C}. and {B}ach, {P}ascal and {M}urua, {H}. and {A}baunza, {P}. and {S}antos, {M}. {N}.},
  editor = {},
  language = {{ENG}},
  abstract = {{P}elagic sharks are an important bycatch in pelagic fisheries, especially for drifting longlines targeting swordfish. {I}n the {C}abo {V}erde {A}rchipelago (tropical {NE} {A}tlantic), pelagic shark catches can reach a significant proportion of the total catches. {D}ue to the increased concern on the status of pelagic shark species, this study was developed to enhance the current knowledge of those sharks in the {C}abo {V}erde region in comparison to the adjacent areas, especially associated with {E}uropean {U}nion ({EU}) pelagic longline fishing activity. {S}tock status indicators for the two main species, blue shark ({P}rionace glauca) and shortfin mako ({I}surus oxyrinchus), were developed, based on fisheries data from logbooks and onboard scientific observers, including analysis of size frequency distributions and standardized catch-per-unit-of-effort ({CPUE}) indexes over time. {T}he standardized {CPUE}s have been stable or increasing for both species in the past 10 years, indicating no signs of local depletion. {I}n terms of sizes, the blue shark catch is composed mainly of adults, which can be a sign of a stable population. {O}n the contrary, the catch of shortfin mako is composed mainly of juveniles, which in conjunction of a decrease of mean size might be a cause of concern, highlighting possible overfishing on the species in the region. {T}hirty satellite tags, 25 archival mini{PAT}s and 5 {SPOT} {GPS}, were deployed in the {C}abo {V}erde {E}xclusive {E}conomic {Z}one ({EEZ}), showing that those species are highly mobile. {T}he biomass and size distributions were modeled with spatial and seasonal models ({GAM}s) identifying locations where juveniles are predominantly concentrated and that should be prioritized for conservation. {T}his work presents new information on the status of pelagic sharks in the {C}abo {V}erde region in the context of those highly migratory species, and can now be used to promote more sustainable fisheries in the region.},
  keywords = {{I}ndices of abundance ; {L}ongline fisheries ; {P}elagic sharks ; {P}opulation trends ; {S}atellite tagging ; {S}patial models ; {ATLANTIQUE} ; {CAP} {VERT} {ILES} ; {ZONE} {TROPICALE}},
  booktitle = {},
  journal = {{E}cological {I}ndicators},
  volume = {110},
  numero = {},
  pages = {art. 105942 [14p.]},
  ISSN = {1470-160{X}},
  year = {2019},
  DOI = {10.1016/j.ecolind.2019.105942},
  URL = {https://www.documentation.ird.fr/hor/fdi:010077814},
}