dc.contributor.author | Heino, Mikko | |
dc.contributor.author | Boukal, David S. | |
dc.contributor.author | Falkenhaug, Tone | |
dc.contributor.author | Piatkowski, Uwe | |
dc.contributor.author | Porteiro, Filipe M. | |
dc.contributor.author | Sutton, Tracey T. | |
dc.date.accessioned | 2012-02-07T08:30:31Z | |
dc.date.available | 2012-02-07T08:30:31Z | |
dc.date.issued | 2008 | |
dc.identifier.citation | This report is not to be quoted without prior consultation with the General Secretary. | no_NO |
dc.identifier.uri | http://hdl.handle.net/11250/102674 | |
dc.description.abstract | Here we use a new technique to study life history variation in deep-pelagic fishes from a midocean
ridge system. Shape of length distribution in a population is to a significant extent determined
by the degree to which an average individual approaches its asymptotic maximum
size. Analysing the material from the pelagic trawl hauls taken during the 2004 Mar-Eco expedition
along the northern Mid-Atlantic Ridge, we show that length distributions in many
deep-pelagic fish species are characterised by negative skew (the left tail of the distribution is
longer). In other words, a large proportion of individuals had a size close to species-specific
maximum size. Provided that our sampling can be considered representative, this finding suggests
that deep-pelagic fishes have a low mortality rate relative to the rate at which they grow
towards their asymptotic size.
Keywords: Life history, growth trajectory, mortality | no_NO |
dc.language.iso | eng | no_NO |
dc.publisher | ICES | no_NO |
dc.relation.ispartofseries | ICES CM documents;2008/C:14 | |
dc.subject | age determination | no_NO |
dc.subject | aldersbestemmelse | no_NO |
dc.subject | pelagic fish | no_NO |
dc.subject | pelagisk fisk | no_NO |
dc.subject | growth | no_NO |
dc.subject | vekst | no_NO |
dc.title | Length structure of deep-pelagic fishes sheds new light to their life histories | no_NO |
dc.type | Working paper | no_NO |
dc.subject.nsi | VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Resource biology: 921 | no_NO |
dc.source.pagenumber | 6 s. | no_NO |