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dc.contributor.authorLongmore, Craig
dc.contributor.authorTrueman, Clive N.
dc.contributor.authorNeat, Francis
dc.contributor.authorJorde, Per Erik
dc.contributor.authorKnutsen, Halvor
dc.contributor.authorStefanni, Sergio
dc.contributor.authorCatarino, Diana
dc.contributor.authorMilton, James A.
dc.contributor.authorMariani, Stefano
dc.date.accessioned2015-03-04T07:30:01Z
dc.date.available2015-03-04T07:30:01Z
dc.date.issued2014
dc.identifier.citationLongmore, C., Trueman, C. N., Neat, F., Jorde, P. E., Knutsen, H., Stefanni, S., . . . Mariani, S. (2014). Ocean-scale connectivity and life cycle reconstruction in a deep-sea fish. Canadian Journal of Fisheries and Aquatic Sciences, 71(9), 1312-1323. doi: 10.1139/cjfas-2013-0343nb_NO
dc.identifier.issn0706-652X
dc.identifier.urihttp://hdl.handle.net/11250/278337
dc.descriptionAuthor's version of an article in the journal: Canadian Journal of Fisheries and Aquatic Sciences. Also available from the publisher at: http://dx.doi.org/10.1139/cjfas-2013-0343nb_NO
dc.description.abstractAs human exploration and harvesting moves to the high seas, ecological understanding of the deep sea has become a priority, especially in those commercially exploited species whose life cycle, habitat use, and demographic structure remain poorly understood. Here we combine otolith trace element and stable isotope analyses with microsatellite data to investigate population structure and connectivity in the migratory deep-sea black scabbardfish (Aphanopus carbo), sampled along a latitudinal gradient spanning much of the known species range in the Northeast Atlantic. In each sampled life stage, otolith trace element and oxygen isotope compositions are similar among fish from different capture locations, but otolith compositions vary greatly between life stages. Oxygen isotope compositions indicate ontogenetic migrations from relatively warm water conditions during larval growth to cooler waters with increasing age. Analysis of microsatellite DNA also suggests lack of genetic structure among the areas sampled. The multidisciplinary approach employed collectively suggests that A. carbo individuals undergo an ocean-scale ontogenetic migration, beginning with spawning in southern, warm-water Macaronesian areas (potentially dominated by Madeira), followed by a large proportion of immature fish moving to and feeding on the continental slope in northern areas. The results lend the first conclusive evidence for defining the life-history circuit of this species and the perception of its stock structure across the North Atlantic.nb_NO
dc.language.isoengnb_NO
dc.publisherNational Research Council of Canadanb_NO
dc.titleOcean-scale connectivity and life cycle reconstruction in a deep-sea fishnb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.subject.nsiVDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Resource biology: 921nb_NO
dc.source.pagenumber1312-1323nb_NO
dc.source.volume71nb_NO
dc.source.journalCanadian Journal of Fisheries and Aquatic Sciencesnb_NO
dc.source.issue9nb_NO
dc.identifier.doi10.1139/cjfas-2013-0343


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