Mackerel egg investigations in the North Sea
Working paper
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http://hdl.handle.net/11250/103860Utgivelsesdato
1984Metadata
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This report is not to be cited without prior reference to the authorsSammendrag
This paper deals with the mackerel egg investigations in the North Sea
in 1982 and 1983. The egg production is estimated by a computerized
method. The confidence limits of the egg samples were estimated at
20-30%. The optimum future distribution of sampling effort in the
area is calculated according to Neyman allocation. A comparison of the
fecundity of mackerel from different areas measured by different
methods is done. The size of the North Sea spawning stock is estimated
based on the egg surveys and the fecundity studies.