Estimated hatching date and growth history of Norwegian spring spawning herring (Clupea harengus L.) from otolith data of larvae of the 1990 yearclass
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http://hdl.handle.net/11250/104918Utgivelsesdato
1991Metadata
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This study was performed on herring larvae of the 1990 yearclass of
Norwegian spring spawners. The larvae were caught in May on the
Norwegian shelf in the area from 64 °N - 69 °N. There was one size group
of larvae with standard length 20-30 mm and another with standard length
30-40 mm. The distribution of data for hatching date and growth history
were back-calculated from otolith data. These data were compared with the
hatching that actually took place over the spawning grounds in March/ April
the same year. Differences in growth rate and distribution of birth date
between the larvae within the investigated area were studied.