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Cephalopod fauna of the Pacific Southern Ocean using Antarctic toothfish (Dissostichus mawsoni) as biological samplers and fisheries bycatch specimens

2021Artigo científico Acesso aberto
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dc.contributor.authorQueirós, J.P.
dc.contributor.authorRamos, J.A.
dc.contributor.authorCherel, Y.
dc.contributor.authorFranzitta, M.
dc.contributor.authorDuarte, B.
dc.contributor.authorRosa, R.
dc.contributor.authorMonteiro, F.
dc.contributor.authorFigueiredo, A.
dc.contributor.authorStrugnel, J.M.
dc.contributor.authorFukuda, Y.
dc.contributor.authorStevens, D.W.
dc.contributor.authorXavier, J.C.
dc.date.accessioned2022-02-17T10:24:57Z
dc.date.available2022-02-17T10:24:57Z
dc.date.issued2021
dc.description.abstractCephalopods are an important component of Southern Ocean food webs but studies analysing their habitat and trophic ecology are scarce. Here, we use the Antarctic toothfish Dissostichus mawsoni as a biological sampler of Southern Ocean’s cephalopods in the Ross, Amundsen, and D’Urville Seas. Ten cephalopod taxa were identified in the diet of the Antarctic toothfish, with Pareledone turqueti and Moroteuthopsis longimana being the only species present in all the three studied areas. DNA analysis conducted on squid flesh samples allowed identification of eight and two specimens of Mesonychoteuthis hamiltoni and M. longimana, respectively, proving this technique as a potential tool to improve the knowledge of cephalopods biodiversity and biogeography in the Southern Ocean. Stable isotopes were used to compare the habitat (δ13C) and trophic ecology (δ15N) between two life-stages of the two most abundant squid species (M. longimana and Psychroteuthis glacialis) from the D’Urville Sea (both squid species) and Amundsen Sea (only P. glacialis). Higher δ13C values in M. longimana suggest that this species inhabits waters near the Antarctic Polar Front, with incursions into sub-Antarctic waters, whilst P. glacialis spends its entire life in Antarctic waters. The most recently deposited part of the beak is enriched in 15N suggesting an increase in trophic level during squid growth. These results give us the first insights into the bathyal distribution of cephalopods in the Amundsen and D’Urville Seas, as well as into the ontogenetic changes of two of the most consumed squid species by top predators in this region. Such results are an important step towards improving the biogeography of Antarctic cephalopods, being of utmost importance to understand the biodiversity, food web structure, and functioning of this regionpt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationQueirós JP, Ramos JA, Cherel Y, Franzitta M, Duarte B, Rosa R, Monteiro F, Figueiredo A, Strugnell JM, Fukuda Y, Stevens DW, Xavier JC (2021). Cephalopod fauna of the Pacific Southern Ocean using Antarctic toothfish (Dissostichus mawsoni) as biological samplers and fisheries bycatch specimens. Deep Sea Research Part I: Oceanographic Research Papers 174: 103571pt_PT
dc.identifier.doihttps://doi.org/10.1016/j.dsr.2021.103571pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.5/23566
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relationCEECIND/00511/2017pt_PT
dc.relationUID/MAR/04292/2020pt_PT
dc.relationUnveiling the genetic potential of Portuguese wild Sugar Beet relatives for abiotic stress tolerance
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectDNA barcodingpt_PT
dc.subjectAmundsen Seapt_PT
dc.subjectD’Urville Seapt_PT
dc.subjectCephalopodapt_PT
dc.subjectstable isotopespt_PT
dc.subjecttrophic ecologypt_PT
dc.titleCephalopod fauna of the Pacific Southern Ocean using Antarctic toothfish (Dissostichus mawsoni) as biological samplers and fisheries bycatch specimenspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardNumberSFRH/BPD/114664/2016
oaire.awardTitleUnveiling the genetic potential of Portuguese wild Sugar Beet relatives for abiotic stress tolerance
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/OE/SFRH%2FBPD%2F114664%2F2016/PT
oaire.citation.titleDeep–Sea Researchpt_PT
oaire.fundingStreamOE
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isProjectOfPublication23fff455-7077-4cfa-8ab9-f79746f84cdf
relation.isProjectOfPublication.latestForDiscovery23fff455-7077-4cfa-8ab9-f79746f84cdf

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