dc.creatorD'agostino, Valeria Carina
dc.creatorHoffmeyer, Monica Susana
dc.creatorDegrati, Mariana
dc.date.accessioned2018-03-19T14:05:01Z
dc.date.accessioned2018-11-06T11:24:53Z
dc.date.available2018-03-19T14:05:01Z
dc.date.available2018-11-06T11:24:53Z
dc.date.created2018-03-19T14:05:01Z
dc.date.issued2016-06
dc.identifierD'agostino, Valeria Carina; Hoffmeyer, Monica Susana; Degrati, Mariana; Faecal analysis of southern right whales (Eubalaena australis) in Península Valdés calving ground, Argentina: Calanus australis, a key prey species; Cambridge University Press; Journal of the Marine Biological Association of the United Kingdom; 96; 4; 6-2016; 859-868
dc.identifier0025-3154
dc.identifierhttp://hdl.handle.net/11336/39170
dc.identifierCONICET Digital
dc.identifierCONICET
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1851113
dc.description.abstractPenínsula Valdés (PV) is the most austral calving ground for the SW Atlantic population of Eubalaena australis. Recent studies indicate that E. australis often feeds in PV mainly in late September and October. A microscopic analysis of food chitin remains found in five whale faeces was performed in the present study in an attempt to obtain baseline knowledge about trophic ecology and degree of use of plankton food available for whales in PV during spring (September-December). The remains in faeces from stranded and live individuals included copepods, other zooplankton and centric diatoms, all of which were characterized. Copepod remains were found to be dominant. Scanning electron and confocal laser scanning microscopes were used for comparative analyses between the mandibular gnathobases found in whale faeces and those obtained from preserved specimens. Mandibular gnathobases were the same in structure and morphometry as those obtained from preserved Calanus australis (copepodites 4-6). The positive relationship observed between the total length and width of the mandibular gnathobases edge of C. australis and those found in faeces allowed us to infer the developmental stages of the copepods ingested by E. australis. Our results indicate - for the first time - the relevant role of C. australis copepodite 5 as main prey for E. australis in PV during the calving season. Copepodite 5 of C. australis accumulates energy-rich lipids. This is energetically attractive for whales and it is the potential reason why E. australis feeds mainly on dense patches dominated by this developmental stage of C. australis.
dc.languageeng
dc.publisherCambridge University Press
dc.relationinfo:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1017/S0025315415001897
dc.relationinfo:eu-repo/semantics/altIdentifier/url/https://www.cambridge.org/core/journals/journal-of-the-marine-biological-association-of-the-united-kingdom/article/faecal-analysis-of-southern-right-whales-eubalaena-australis-in-peninsula-valdes-calving-ground-argentina-calanus-australis-a-key-prey-species/59233E22B9505C45D1E1EA1EED43C229
dc.rightshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.rightsinfo:eu-repo/semantics/restrictedAccess
dc.subjectCALANUS AUSTRALIS
dc.subjectCALVING GROUND
dc.subjectCOPEPOD
dc.subjectEUBALAENA AUSTRALIS
dc.subjectFEEDING
dc.subjectMANDIBULAR GNATHOBASES
dc.subjectNORTH PATAGONIAN GULFS
dc.subjectPENÍNSULA VALDÉS
dc.subjectRIGHT WHALES
dc.titleFaecal analysis of southern right whales (Eubalaena australis) in Península Valdés calving ground, Argentina: Calanus australis, a key prey species
dc.typeArtículos de revistas
dc.typeArtículos de revistas
dc.typeArtículos de revistas


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