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Shell Shape Variation in Littorina Saxatilis and L. Arcana: A Case of Character Displacement?

Published online by Cambridge University Press:  11 May 2009

J. Grahame
Affiliation:
Department of Pure and Applied Biology, University of Leeds, Leeds, LS2 9JT
P.J. Mill
Affiliation:
Department of Pure and Applied Biology, University of Leeds, Leeds, LS2 9JT

Extract

It is now well established that there are several species in the group of rough periwinkles inhabiting European rocky shores. The usual consensus agrees on four, namely Littorina saxatilis (Olivi), Littorina arcana Ellis, Littorina nigrolineata Gray and Littorina neglecta Bean. The first two species are particularly difficult to distinguish in the field and have received much attention. Recent work indicates that the ovoviviparous L.saxatilis is a very variable species living in a wide range of habitats (e.g. Janson, 1985) and that, although it is close to the oviparous L. arcana in shell morphology and in genotype, the two are separate species (Ward & Warwick, 1980; Ward & Janson, 1985), and not reproductive morphs of the same species.

Type
Research Article
Copyright
Copyright © Marine Biological Association of the United Kingdom 1989

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References

REFERENCES

Atkinson, W.D. & Newbury, S.F., 1984. The adaptations of the rough winkle, Littorina rudis, to desiccation and to dislodgement by wind and waves. Journal of Animal Ecology, 53, 93105.CrossRefGoogle Scholar
Campbell, N.A. & Atchley, W.R., 1981. The geometry of canonical variate analysis. Systematic Zoology, 30, 268280.CrossRefGoogle Scholar
Daguzan, J., 1977. Analyse biométrique du dimorphisme sexuel chez quelques Littorinidae (Mollusques, Gastéropodes, Prosobranches). Haliotis, 6, 1740.Google Scholar
Fretter, V. & Grahame, A., 1962. British Prosobranch Molluscs. London: Ray Society.Google Scholar
Grahame, J. & Mill, P.J., 1986. Relative size of the foot of two species of Littorina on a rocky shore in Wales. Journal of Zoology, 208, 229236.CrossRefGoogle Scholar
Hannaford Ellis, C., 1979. Morphology of the oviparous rough winkle, Littorina arcana Hannaford Ellis, 1978, with notes on the taxonomy of the L. saxatilis species-complex (Prosobranchia: Littorinidae). Journal ofConchology, 30, 4356.Google Scholar
Hart, A. & Begon, M., 1982. The status of general reproductive-strategy theories, illustrated in winkles. Oecologia, 52, 3742.CrossRefGoogle ScholarPubMed
Heller, J., 1976. The effects of exposure and predation on the shell of two British winkles. Journal of Zoology, 179, 201213.CrossRefGoogle Scholar
Janson, K., 1985. A morphologic and genetic analysis of Littorina saxatilis (Prosobranchia) from Venice, and on the problem of saxatilis-rudis nomenclature. Biological Journal of the Linnean Society, 24, 5159.CrossRefGoogle Scholar
Janson, K. & Sundberg, P., 1983. Multivariate morphometric analysis of two varieties of Littorina saxatilis from the Swedish west coast. Marine Biology, 74, 4953.CrossRefGoogle Scholar
Marion, P. Van, 1981. Intra-population variation of the shell of Littorina rudis (Maton) (Mollusca: Prosobranchia). Journal ofMolluscan Studies, 47, 99107.CrossRefGoogle Scholar
Mill, P.J. & Grahame, J., 1988. Esterase variability in the gastropod molluscs Littorina saxatilis (Olivi) and L. saxatilis Ellis. Journal ofMolluscan Studies, 54, 347353.CrossRefGoogle Scholar
Mill, P.J. & Grahame, J., 1989. Distribution of the species of rough periwinkle (Littorina) in Great Britain. Hydrobiologia, in press.CrossRefGoogle Scholar
Raffaelli, D., 1979. The taxonomy of the Littorina saxatilis species-complex, with particular reference to the systematic status of Littorina patula Jeffreys. Zoological Journal of the Linnean Society, 65, 219232.CrossRefGoogle Scholar
Reyment, R.A., Blackith, R.E. & Campbell, N.A., 1984. Multivariate Morphometrics, 2nd ed.London: Academic Press.Google Scholar
SAS Institute Incorporated, 1985. SAS User's Guide: Statistics, 5th ed. North Carolina: Cary.Google Scholar
Smith, J.E., 1981. The natural history and taxonomy of shell variation in the periwinkles Littorina saxatilis and Littorina rudis. Journal of the Marine Biological Association of the United Kingdom, 61, 215241.CrossRefGoogle Scholar
SPSS Incorporated, 1986. SPSS™ User's Guide, 2nd ed. Chicago, Illinois.Google Scholar
Ward, R.D. & Janson, K., 1985. A genetic analysis of sympatric subpopulations of the sibling species Littorina saxatilis (Olivi) and Littorina arcana Hannaford Ellis. Journal of Molluscan Studies, 51, 8694.CrossRefGoogle Scholar
Ward, R.D. & Warwick, T., 1980. Genetic differentiation in the molluscan species Littorina rudis and Littorina arcana (Prosobranchia: Littorinidae). Biological Journal of the Linnean Society, 14, 417428.CrossRefGoogle Scholar