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Global-scale environmental niche and habitat of blue shark (Prionace glauca) by size and sex: a pivotal step to improving stock management

2022Journal article Open access
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dc.contributor.authorDruon, Jean-Noël
dc.contributor.authorCampana, Steven
dc.contributor.authorVandeperre, Frederic
dc.contributor.authorHazin, Fábio H. V.
dc.contributor.authorBowlby, Heather
dc.contributor.authorCoelho, Rui
dc.contributor.authorQueiroz, Nuno
dc.contributor.authorSerena, Fabrizio
dc.contributor.authorAbascal, Francisco
dc.contributor.authorDamalas, Dimitrios
dc.contributor.authorMusyl, Michael
dc.contributor.authorLopez, Jon
dc.contributor.authorBlock, Barbara
dc.contributor.authorAfonso, Pedro
dc.contributor.authorDewar, Heidi
dc.contributor.authorSabarros, Philippe S.
dc.contributor.authorFinucci, Brittany
dc.contributor.authorZanzi, Antonella
dc.contributor.authorBach, Pascal
dc.contributor.authorSenina, Inna
dc.contributor.authorGaribaldi, Fulvio
dc.contributor.authorSims, David W.
dc.contributor.authorNavarro, Joan
dc.contributor.authorCermeño, Pablo
dc.contributor.authorLeone, Agostino
dc.contributor.authorDiez, Guzmán
dc.contributor.authorZapiain, María Teresa Carreón
dc.contributor.authorDeflorio, Michele
dc.contributor.authorRomanov, Evgeny V.
dc.contributor.authorJung, Armelle
dc.contributor.authorLapinski, Matthieu
dc.contributor.authorFrancis, Malcolm P.
dc.contributor.authorHazin, Humberto
dc.contributor.authorTravassos, Paulo
dc.date.accessioned2023-01-11T14:37:34Z
dc.date.available2023-01-11T14:37:34Z
dc.date.issued2022
dc.description.abstractBlue shark (Prionace glauca) is amongst the most abundant shark species in international trade, however this highly migratory species has little effective management and the need for spatio-temporal strategies increases, possibly involving the most vulnerable stage or sex classes. We combined 265,595 blue shark observations (capture or satellite tag) with environmental data to present the first global-scale analysis of species' habitat preferences for five size and sex classes (small juveniles, large juvenile males and females, adult males and females). We leveraged the understanding of blue shark biotic environmental associations to develop two indicators of foraging location: productivity fronts in mesotrophic areas and mesopelagic micronekton in oligotrophic environments. Temperature (at surface and mixed layer depth plus 100 m) and sea surface height anomaly were used to exclude unsuitable abiotic environments. To capture the horizontal and vertical extent of thermal habitat for the blue shark, we defined the temperature niche relative to both sea surface temperature (SST) and the temperature 100 m below the mixed layer depth (Tmld+100). We show that the lifetime foraging niche incorporates highly diverse biotic and abiotic conditions: the blue shark tends to shift from mesotrophic and temperate surface waters during juvenile stages to more oligotrophic and warm surface waters for adults. However, low productivity limits all classes of blue shark habitat in the tropical western North Atlantic, and both low productivity and warm temperatures limit habitat in most of the equatorial Indian Ocean (except for the adult males) and tropical eastern Pacific. Large females tend to have greater habitat overlap with small juveniles than large males, more defined by temperature than productivity preferences. In particular, large juvenile females tend to extend their range into higher latitudes than large males, likely due to greater tolerance to relatively cold waters. Large juvenile and adult females also seem to avoid areas with intermediate SST (similar to 21.7-24.0 degrees C), resulting in separation from large males mostly in the tropical and temperate latitudes in the cold and warm seasons, respectively. The habitat requirements of sensitive size- and sex-specific stages to blue shark population dynamics are essential in management to improve conservation of this near-threatened species.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.3389/fmars.2022.828412pt_PT
dc.identifier.eissn2296-7745
dc.identifier.urihttp://hdl.handle.net/10400.1/18799
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherFrontiers Media SApt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectForaging habitatpt_PT
dc.subjectHabitat nichept_PT
dc.subjectChlorophyll-a gradientpt_PT
dc.subjectMarine productivitypt_PT
dc.subjectMesotrophicpt_PT
dc.subjectOligotrophicpt_PT
dc.subjectMesopelagic micronektonpt_PT
dc.subjectWater temperaturept_PT
dc.titleGlobal-scale environmental niche and habitat of blue shark (Prionace glauca) by size and sex: a pivotal step to improving stock managementpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.titleFrontiers in Marine Sciencept_PT
oaire.citation.volume9pt_PT
person.familyNameCoelho
person.givenNameRui
person.identifier134638
person.identifier.ciencia-idDC1A-20B7-EAC0
person.identifier.orcid0000-0003-3813-5157
person.identifier.ridC-1163-2008
person.identifier.scopus-author-id56257111100
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication6366aa1b-1301-43a3-b2b0-1280311ac95f
relation.isAuthorOfPublication.latestForDiscovery6366aa1b-1301-43a3-b2b0-1280311ac95f

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