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dc.contributor.authorMarshall, C. Tara
dc.contributor.authorFrank, Kenneth T.
dc.date.accessioned2007-06-11T14:06:23Z
dc.date.issued1999
dc.identifier.issn0706-652X
dc.identifier.urihttp://hdl.handle.net/11250/108245
dc.description.abstractThe relationship between recruitment and spawner biomass assumes that estimates of spawner biomass are proportional to total egg production by the stock. The validity of this assumption is in question for long-lived gadoid stocks; however, estimating total egg production independently of spawner biomass is seldom feasible. An alternative approach is to examine correlations between recruitment and variables likely to be proxies for total egg production by the stock. This indirect approach was used for haddock on the Scotian Shelf. Indices of growth (mean length at age-4) and condition (weight at 50 cm) were used as proxies for the reproductive potential of individual spawners. Both variables were positively correlated with recruitment over a 3-decade period (1964–1995). During the same time period, there was no relationship between recruitment and spawner biomass estimated by Virtual Population Analysis (VPA). This is further evidence that VPA-based spawner biomass is a poor index of the true reproductive potential of the stock. The results highlight the need to develop more accurate/precise measures of total egg production for use in recruitment research.en
dc.format.extent338082 bytes
dc.format.mimetypeapplication/pdf
dc.language.isoengen
dc.subjectcoden
dc.subjecttorsken
dc.subjecthaddocken
dc.subjecthyseen
dc.subjectfish physiologyen
dc.subjectfiskefysiologi
dc.titleThe effect of interannual variation in growth and condition on haddock recruitmenten
dc.typeJournal articleen
dc.typePeer reviewed
dc.source.pagenumber347-355en
dc.source.volume56en
dc.source.journalCanadian Journal of Fisheries and Aquatic Sciencesen
dc.source.issue3
dc.identifier.doihttp://dx.doi.org/10.1139/f99-019


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