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On the Biology of Sagitta. II. The Breeding and Growth of Sagitta setosa J. Müller in the Plymouth Area, 1930–31, with a Comparison with that of S. elegans Verrill

Published online by Cambridge University Press:  11 May 2009

F. S. Russell
F. S. Russell
Affiliation:
Naturalist at the Plymouth Laboratory.
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Extract

1. A study of the adult population of Sagitta setosa J. Müller has been made in the waters off Plymouth by weekly collections with the 2-metre stramin ring-trawl hauled obliquely in the daylight.

2. Measurements of samples and a study of the state of development of the gonads has shown that there were apparently at least six broods of S. setosa during the period September, 1930, to August, 1931, inclusive.

3. The successive broods were apparently spawning in September and October, 1930, and February, April-May, June, and July-August, 1931.

Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 18 , Issue 1 , May 1932 , pp. 147 - 160
Copyright
Copyright © Marine Biological Association of the United Kingdom 1932

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References

REFERENCES

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