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Diet of mid-Atlantic Sowerby’s beaked whales Mesoplodon bidens

2011-11Journal article Open access
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dc.contributor.authorPereira, José N.
dc.contributor.authorNeves, Verónica C.
dc.contributor.authorClarke, D. C.
dc.contributor.authorPrieto, Rui
dc.contributor.authorSilva, Mónica A.
dc.contributor.authorCascão, Irma
dc.contributor.authorOliveira, Cláudia I.
dc.contributor.authorCruz, Maria J.
dc.contributor.authorBarreiros, João P.
dc.contributor.authorMedeiros, J. V.
dc.date.accessioned2013-01-22T12:54:22Z
dc.date.available2013-01-22T12:54:22Z
dc.date.issued2011-11
dc.date.updated2013-01-16T03:23:13Z
dc.descriptionCopyright © 2011 Elsevier Ltd. All rights reserved.en
dc.description.abstractThe first mid-Atlantic diet of Mesoplodon beaked whales is presented, from ten Sowerby's Mesoplodon bidens stranded in the Azores region between 2002 and 2009. This doubles the worldwide number of stomachs sampled, and reveals new feeding habits for this species. The mean number of prey items per stomach was 85±89 (range: 12–238), with fish accounting for 99.3% and cephalopods contributing less than 1% of total prey. Fish otoliths from 15 families and cephalopod lower mandibles from three families were identified, representing 22 taxa. The diet consisted mainly of small mid-water fish, the most numerous being Diaphus sp., Lampanyctus sp. and Melamphaidae species. Myctophids were present in all stranded individuals, followed by Diretmidae, Melamphaidae and Opisthoproctus soleatus, while the remaining fish species were scarce or single occurrences. Consistency of diet in four different years reveals a divergence from all previous records in continental areas, where mainly neritic and shelf-break benthopelagic fish species have been reported. Mid-Atlantic Sowerby's beaked whales' showed dietary plasticity, feeding on the most abundant mid-water groups occurring between 0 and750 m. Trophic level from prey numerical frequency was estimated at 4.4±0.46.en
dc.identifier.citationPereira, J.N.; Neves, V.C.; Clarke, D.; Prieto, R.; Silva, M.; Cascão, I.; Oliveira, C.; Cruz, M.J.; Barreiros, J.P. & Medeiros, J. (2011). "Diet of mid-Atlantic Sowerby’s beaked whales Mesoplodon bidens". «Deep-Sea Research Part I», 58(11): 1084-1090. ISSN 0967-0637.en
dc.identifier.issn0967-0637
dc.identifier.urihttp://hdl.handle.net/10400.3/1574
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherElsevierpor
dc.relation.publisherversionhttp://dx.doi.org/doi:10.1016/j.dsr.2011.08.004por
dc.subjectAzorespor
dc.subjectDieten
dc.subjectMesopelagic Fishen
dc.subjectSowerby's Beaked Whalesen
dc.subjectStrandingsen
dc.titleDiet of mid-Atlantic Sowerby’s beaked whales Mesoplodon bidenspor
dc.typejournal article
dspace.entity.typePublication
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/SFRH/BPD/26657/2006
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/SFRH/BPD/29841/2006
oaire.citation.conferencePlaceUnited Kingdompor
oaire.citation.endPage1090por
oaire.citation.issue11por
oaire.citation.startPage1084por
oaire.citation.titleDeep Sea Research Part I: Oceanographic Research Papersen
oaire.citation.volume58por
oaire.fundingStreamSFRH
oaire.fundingStreamSFRH
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspor
rcaap.typearticlepor
relation.isProjectOfPublication50f97587-c612-41a9-bc3e-4177eb49f422
relation.isProjectOfPublicationf9d6dc0a-516a-4e27-94d0-a558ba84ac7a
relation.isProjectOfPublication.latestForDiscovery50f97587-c612-41a9-bc3e-4177eb49f422

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