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Size selective mortality in Norwegian spring spawning herring juveniles?

Husebø, Åse; Stenevik, Erling Kåre; Slotte, Aril; Vikebø, Frode; Folkvord, Arild; Fossum, Petter
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URI
http://hdl.handle.net/11250/100787
Date
2005
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  • ICES CM documents authored by IMR scientists (1949-2011) [3138]
Abstract
The growth-mortality hypothesis, where survival during the larval stage is positively related to size, is tested for Norwegian

spring spawning herring (Clupea harengus L.). The daily increment width in the otoliths is compared between larvae

sampled in May-June along the Norwegian shelf and the surviving population of 0-group juveniles sampled in fjords and

inlets along the coast and in the Barents Sea in autumn (August-December). In order to select juveniles from the same

cohort as the larvae sampled on the Norwegian shelf (May-June), a numerical model was used to simulate the drift of larvae

from the shelf areas to the nursery areas where 0-group juveniles had been sampled. Samples from years with low high

recruitment and from different areas are compared. The results are discussed in relation to variations in environmental

conditions
Description
Abstract only
Publisher
ICES
Series
ICES CM documents
2005/O:08

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