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 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.

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:	External research report biblioteca
Language:	English
Published:	IMARES
Subjects:	biomonitoring, fisheries, herrings, marine fisheries, monitoring, morphometrics, species differences, biologische monitoring, haringen, morfometrie, soortverschillen, visserij, zeevisserij,
Online Access:	https://research.wur.nl/en/publications/norwegian-sea-herring-stock-discrimination-phase-i-nordisi
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