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On the Occurrence of Pelagic Tunicates (Thaliacea)]in the Waters of the English Channel off Plymouth

Published online by Cambridge University Press:  11 May 2009

F. S. Russell
Affiliation:
Naturalist at the Plymouth Laboratory
Anna B. Hastings
Affiliation:
British Museum (Natural History).

Extract

It is only occasionally that pelagic tunicates of the genera Doliolum and Salpa are recorded in numbers in the waters off Plymouth. In view of their possible use as indicators of the presence of Atlantic water (see Bowman, 1923; and Schmidt, 1909, p. 159), it is of value that their occurrence should be put on record. Regular weekly catches of plankton have been made since 1930 with half-hour oblique hauls with the two-metre stramin ring-trawl. During this period species of both genera have appeared in such numbers that it has seemed desirable to make a careful examination of the species occurring.

Type
Research Article
Copyright
Copyright © Marine Biological Association of the United Kingdom 1933

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