Norwegian Sea Herring Stock Discrimination phase I (NORDISI)

There is growing concern among fishermen about the migration of North Sea herring into the Norwegian Sea. The Pelagic Freezer-trawler Association therefore commissioned IMARES to develop a technique to monitor possible catches of North Sea herring in the Norwegian Sea. This technique will use morpho...

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Bibliographic Details
Main Authors: van Overzee, H.M.J., Dickey-Collas, M., Pennock, I., Tribuhl, S.V., Bierman, S.M., van Damme, C.J.G., Warmerdam, M.J.M.
Format: Report
Language:English
Published: IMARES 2009
Subjects:
biomonitoring
fisheries
herrings
marine fisheries
monitoring
morphometrics
species differences
biologische monitoring
haringen
morfometrie
soortverschillen
visserij
zeevisserij
Norwegian Sea
Online Access:https://research.wur.nl/en/publications/norwegian-sea-herring-stock-discrimination-phase-i-nordisi
Description
Summary:There is growing concern among fishermen about the migration of North Sea herring into the Norwegian Sea. The Pelagic Freezer-trawler Association therefore commissioned IMARES to develop a technique to monitor possible catches of North Sea herring in the Norwegian Sea. This technique will use morphometric (shape) differences in herring to distinguish between Norwegian Sea spawning herring and North Sea herring. The results show that the model is able to distinguish Norwegian spring spawning herring from North Sea autumn or winter spawning herring. Overall we can conclude that even though we still have to overcome some methodological problems we are confident that this research constitutes a first step towards developing a technique to monitor catches of herring from the Norwegian Sea for Norwegian Spring spawning or other herring.

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