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A New Dredge for Collecting Burrowing Animals

Published online by Cambridge University Press:  11 May 2009

G. R. Forster
G. R. Forster
Affiliation:
The Plymouth Laboratory.
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Extract

The 'anchor-dredge' is a lightly built one-sided instrument designed to catch deep-burrowing animals. The depth to which it digs is dependent on the pull of the warp and not on the weight of the dredge.

From a trawler, it is best to work the dredge from the forward gallows, and give it a 'tug' as the ship is moving astern.

Comparative tests and direct underwater observations have shown that the anchor-dredge samples the in-fauna more efficiently than do either large rectangular and oval dredges, or the conical dredge.

A description and plan is given of a larger model, designed for use from a 6o-ft. or 90-ft. ship.

Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 32 , Issue 1 , June 1953 , pp. 193 - 198
Copyright
Copyright © Marine Biological Association of the United Kingdom 1953

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References

REFERENCES

Fowler, G. H. & Allen, E. J., 1928. The Science of the Sea. Oxford.Google Scholar
Gustafson, G., 1934. On the Thalassinidea of the Swedish West Coast. Ark. Zool. Bd. 28 A, No. 1, pp. 1–9.Google Scholar