Author:
Marshall S. M.,Nicholls A. G.,Orr A. P.
Abstract
Two groups of young herring are found in the Clyde. One, the offshore group, has been identified as Clyde spring-spawned herring; the other, the inshore type, is of unknown origin. The former were caught only occasionally, the latter at fairly regular intervals during their first year.The two groups are distinguished by differences in size and identified as belonging to different races by vertebral counts. There was no intermixture.The offshore herring which metamorphosed at the end of May when 40-50 mm. long, reached a length of 90-100 mm. in winter. The inshore fish which were about 50 mm. long in May reached a length of about 130 mm. in winter.
Publisher
Cambridge University Press (CUP)
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