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The population zoogeography of the common shrimp (Crangon crangon) in British waters

Published online by Cambridge University Press:  11 May 2009

P.A. Henderson ,
R. Seaby  and
S.J. Marsh
P.A. Henderson
Affiliation:
Marine Biology Unit, CEGB, Fawley, Southampton, SO4 1TW
R. Seaby
Affiliation:
Marine Biology Unit, CEGB, Fawley, Southampton, SO4 1TW
S.J. Marsh
Affiliation:
Marine Biology Unit, CEGB, Fawley, Southampton, SO4 1TW
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Abstract

The population structure of the common shrimp Crangon crangon (L.) in British waters is investigated. Samples were collected from 31 sites along the coasts of England, Wales, Holland, Belgium and France. Using a morphometric analysis it is concluded that English and Welsh waters hold six distinct populations. Animals belonging to the same population are found on the opposing English and continental coasts in the southern North Sea and English Channel which indicates that the avoidance of offshore waters is not isolating the shrimps. The boundaries between the populations are found to correspond with the boundaries between major plankton assemblages. It is suggested that the populations are isolated by the reduced dispersal of the planktonic larvae across fronts where bodies of water with different physical properties meet but incompletely mix.

Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 70 , Issue 1 , February 1990 , pp. 89 - 97
Copyright
Copyright © Marine Biological Association of the United Kingdom 1990

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