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dc.contributor.authorHolst, Jens Christian
dc.date.accessioned2012-09-26T14:08:05Z
dc.date.available2012-09-26T14:08:05Z
dc.date.issued1996
dc.identifier.citationThis report is not to be cited without prior reference to the authorno_NO
dc.identifier.urihttp://hdl.handle.net/11250/105550
dc.description.abstractIn Norwegian spring-spawning herring the common intercept of the back-calculating formula, as estimated by linear regression of the fish-scale relationship, grosssly overestimated the back-calculated length frequencies distributions as compared to the corresponding observed ones. By tuning the back-calculated length frequency distributions to fit optimally with the corresponding observed ones, an "optimum fit" intercept was estimated. This intercept was observed to increase with the age back-calculated. Thus, the growth trajectory of single fish becomes non-linear, and the origin of the growth trajectory is probably situated close to the "biological intercept" as proposed by Campana (1990). The quality of the "optimum fit" intercept depend upon factors as size-selective mortality and representative sampling and should be evaluated further.no_NO
dc.language.isoengno_NO
dc.publisherICESno_NO
dc.relation.ispartofseriesICES CM Documents;1996/D:9
dc.subjectherringno_NO
dc.subjectsildno_NO
dc.subjectdistributionno_NO
dc.subjectutbredelseno_NO
dc.titleBack-calculated length at age in Norwegian spring-spawning herring (Clupea harengus L.) : Estimating the common intercept or origin by tuning back-calculated length frequencies to observed onesno_NO
dc.typeWorking paperno_NO
dc.subject.nsiVDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Resource biology: 921no_NO
dc.subject.nsiVDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Fish health: 923no_NO
dc.source.pagenumber24 s.no_NO


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