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Enzyme variation in Chthamalus stellatus and Chthamalus montagui (Crustacea: Cirripedia): evidence for the presence of C. montagui in the Adriatic

Published online by Cambridge University Press:  11 May 2009

P. R. Dando  and
A. J. Crisp
P. R. Dando
Affiliation:
A. J. Southward The Laboratory, Marine Biological Association, Citadel Hill, Plymouth
A. J. Crisp
Affiliation:
N.E.R.C. Unit of Marine Invertebrate Biology, Marine Science Laboratories, Menai Bridge, Gwynedd
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Extract

The electrophoretic mobilities of 13 enzymes in two species of Chthamalus, C. stellatus Poli and C. montagui Southward, were compared. These species differed absolutely for eight of the enzymes and exhibited some species-specific allozymes for a further four enzymes. No evidence of hybridization was found. The observed mean heterozygosity was 0087 for C. stellatus and 0179 for C. montagui.

A sample of ‘C. montagui’ from Venice differed from two samples from south-west England in external shell characters and in allozyme frequency for two enzymes. These differences are thought to be the result of a geographical cline rather than a distinct separation of subspecies.

Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 59 , Issue 2 , May 1979 , pp. 307 - 320
Copyright
Copyright © Marine Biological Association of the United Kingdom 1979

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