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The Breeding Cycle and Growth of Hydrobia Ulvae in the Dovey Estuary

Published online by Cambridge University Press:  11 May 2009

J. D. Fish  and
Susan Fish
J. D. Fish
Affiliation:
Department of Zoology, University College of Wales, Aberystwyth
Susan Fish
Affiliation:
Department of Zoology, University College of Wales, Aberystwyth
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Extract

Hydrobia ulvae has featured in many reports on the ecology of estuaries and mud-flats, yet surprisingly there are few detailed studies on population structure, growth and the breeding cycle. Population densities fluctuate widely from one locality to the next, and the variation in size recorded for the adults suggests significant differences in growth rate and the size at which the snails become sexually mature. The occurrence of Hydrobia in the stomachs offish and birds is well documented (Clay, 1960) and the suggestion that this species may influence the breeding success of some species of bird (Anderson, 1971) illustrates its importance in the ecology of estuaries and salt marshes.

Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 54 , Issue 3 , August 1974 , pp. 685 - 697
Copyright
Copyright © Marine Biological Association of the United Kingdom 1974

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References

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