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Vertical distribution, feeding and vulnerability to tactile predation in Metridia longa (Copepoda, Calanoida)

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dc.contributor Universitat de Vic. Escola Politècnica Superior
dc.contributor Universitat de Vic. Grup de Recerca de Medi Ambient
dc.contributor.author Vestheim, H.
dc.contributor.author Brucet Balmaña, Sandra
dc.contributor.author Kaartvedt, S.
dc.date.accessioned 2013-09-03T13:38:45Z
dc.date.available 2013-09-03T13:38:45Z
dc.date.created 2013
dc.date.issued 2013
dc.identifier.citation Vestheim, H, Brucet, S., Kaartvedt, S. (2013)"Vertical distribution, feeding and vulnerability to tactile predation in Metridia longa (Copepoda, Calanoida) A: Marine Biology Research, 9 (10) pp. 949-957 ca_ES
dc.identifier.issn 1745-1000
dc.identifier.uri http://hdl.handle.net/10854/2324
dc.description.abstract We assessed the vertical distribution and feeding of the calanoid copepod Metridia longa in the Oslofjord, Norway during winter and spring 2006. Adult females of Metridia longa inhabited the whole 200 m deep-water column. Their distribution was shallower at night than during the day. Enumeration of egested faecal pellets suggested that feeding activity was greater at night than during the day and that more pellets were produced by individuals collected at shallow depths vs. by individuals found deeper. There was no pronounced difference between months in feeding activity. Although the hypothesis is that they prey on Calanus eggs and nauplii, scanning of Metridia faecal pellets by PCR using Calanus-specific primers did not confirm the presence of any Calanus prey DNA. Most pellets had a greenish colour, implying herbivorous feeding. Feeding is related to swimming, and the actively swimming Metridia would presumably be vulnerable to tactile invertebrate predators. However, predation experiments where the carnivorous copepod Pareuchaeta norvegica was offered similar-sized Metridia and Calanus proved that Pareuchaeta consumed the less-active Calanus, but not the Metridia. en
dc.format application/pdf
dc.format.extent 10 p. ca_ES
dc.language.iso eng ca_ES
dc.publisher Taylor & Francis ca_ES
dc.rights (c) Taylor & Francis
dc.rights Tots els drets reservats ca_ES
dc.subject.other Copèpodes ca_ES
dc.title Vertical distribution, feeding and vulnerability to tactile predation in Metridia longa (Copepoda, Calanoida) en
dc.type info:eu-repo/semantics/article ca_ES
dc.identifier.doi https://doi.org/10.1080/17451000.2013.793806
dc.relation.publisherversion http://www.tandfonline.com/doi/abs/10.1080/17451000.2013.793806#.UiXkXT-Q6Q4
dc.rights.accesRights info:eu-repo/semantics/closedAccess ca_ES
dc.type.version info:eu-repo/publishedVersion ca_ES
dc.indexacio Indexat a SCOPUS
dc.indexacio Indexat a WOS/JCR ca_ES

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