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Patterns of variation in Aat-1 allele frequencies in rough periwinkles (Littorina) suggest similar selection regimes rather than conspecificity

Published online by Cambridge University Press:  11 May 2009

J. Grahame ,
P.J. Mill ,
M. Double  and
S.L. Hull
J. Grahame
Affiliation:
Department of Pure & Applied Biology, University of Leeds, Leeds, LS2 9JT
P.J. Mill
Affiliation:
Department of Pure & Applied Biology, University of Leeds, Leeds, LS2 9JT
M. Double
Affiliation:
Department of Pure & Applied Biology, University of Leeds, Leeds, LS2 9JT
S.L. Hull
Affiliation:
Department of Pure & Applied Biology, University of Leeds, Leeds, LS2 9JT
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Abstract

It has been argued by Johannesson & Johannesson (1990b) that the pattern of common genetic variation in Littorina saxatilis (Olivi) and Littorina neglecta Bean indicates gene flow in sympatric populations of these ‘species’. They suggest that L. neglecta is not a good species. We report that a gene diversity analysis of polymorphism in Aat-1 suggests that L. saxatilis and Littorina arcana Hannaford Ellis also show common features in allele frequency distribution. This casts doubt on the argument of Johannesson & Johannesson (1990b) from enzyme polymorphism data on Aat-1 that L. neglecta may simply be an ecotype of L. saxatilis. It seems likely that the similarities are due to operation of the same selection factors on all these species.

Type
Short Communications
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 72 , Issue 2 , May 1992 , pp. 499 - 502
Copyright
Copyright © Marine Biological Association of the United Kingdom 1992

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