Abstract:
:Otolith shape variation of seven Atlantic herring Clupea harengus populations from Canada, the Faroe Islands, Iceland, Ireland, Norway and Scotland, U.K., covering a large area of the species' distribution, was studied in order to see if otolith shape can be used to discriminate between populations. The otolith shape was obtained using quantitative shape analysis, transformed with Wavelet and analysed with multivariate methods. Significant differences were detected among the seven populations, which could be traced to three morphological structures in the otoliths. The differentiation in otolith shape between populations was not only correlated with their spawning time, indicating a strong environmental effect, but could also be due to differing life-history strategies. A model based on the shape differences discriminates with 94% accuracy between Icelandic summer spawners and Norwegian spring spawners, which are known to mix at feeding grounds. This study shows that otolith shape could become an accurate marker for C. harengus population discrimination.
journal_name
J Fish Bioljournal_title
Journal of fish biologyauthors
Libungan LA,Óskarsson GJ,Slotte A,Jacobsen JA,Pálsson Sdoi
10.1111/jfb.12647subject
Has Abstractpub_date
2015-04-01 00:00:00pages
1377-95issue
4eissn
0022-1112issn
1095-8649journal_volume
86pub_type
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