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The Annual Cycle and the Short Term Periodicity of Breeding in a Northumberland Population of Spirorbis Spirorbis (Polychaeta: Serpulidae)

Published online by Cambridge University Press:  11 May 2009

John M. Daly*
Affiliation:
Department of Zoology, The University, Newcastle upon Tyne, England NE1 7RU
*
Present address: Wellcome Marine Laboratory, University of Leeds, Robin Hood's Bay, N. Yorkshire YO22 4SL.

Extract

The fact that Spirorbis spirorbis (= S. borealis) has a summer breeding season during which several successive broods of larvae are produced has been known since the work of Garbarini (1933,1936). A recent summary of the taxonomy, ecology and distribution of S. spirorbis has been given by Knight-Jones & Knight-Jones (1977). The two aspects of the species' reproductive biology which have received most attention are the role of sea temperatures in initiating breeding and the correlation of brood production with lunar and tidal cycles. In the present work a study has been made of gametogenesis as well as of the more easily observed cycle of brood production. The results obtained have indicated, in respect of one population of S. spirorbis at least, the need for a major re-assessment of earlier studies of the species.

Type
Research Article
Copyright
Copyright © Marine Biological Association of the United Kingdom 1978

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References

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