On the formation of the first winter zone in blue whiting otoliths.
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Otolithes of juvenile blue whiting when recruiting to the industrial fishery in the Norwegian Deep in early autumn (August-October 1970-72) could be divided into two groups, without or with a very insignificant hyaline ring. During the autumn a hyaline ring (a Bowers zone) was laid down followed by new opaque material. A true hyaline winter zone was laid down later in the winter.