Abstract
The relationship between gene flow and the maintenance of geographic or morphology-related variation in the polymorphic Macaronesian periwinkle, Littorina striata, was investigated by means of isoelectric focusing of esterases (EST) and myoglobin (Mb). This revealed that: (1) individual EST variation is very high, (2) there is no EST differentiation between sexes, shell morphotypes or wave-exposure regimes, (3) there is no clear macrogeographic patterning of EST variability, although both Cape Verde Islands have the highest, with exception of Flores, mean number of EST bands, and (4) there is no Mb variation, not even between islands separated by more than 2000 km. These results indicate that L. striata shows a high degree of genetic homogeneity among geographic populations and that the morphological patterning in this species persists in the presence of intense gene flow.
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De Wolf, H., Backeljau, T., Verhagen, R. (1998). Lack of significant esterase and myoglobin differentiation in the periwinkle, Littorina striata (Gastropoda, Prosobranchia). In: O’Riordan, R.M., Burnell, G.M., Davies, M.S., Ramsay, N.F. (eds) Aspects of Littorinid Biology. Developments in Hydrobiology, vol 133. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-5336-2_4
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DOI: https://doi.org/10.1007/978-94-011-5336-2_4
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