Natural selection on the polymorphic snail hygromia striolata

J. S. Jones, D. A. Briscoe, Bryan Clarke

    Research output: Contribution to journalArticlepeer-review

    3 Citations (Scopus)


    Hygromia striolata (C. Pfeiffer) is polymorphic for shell and mantle colour. Thirty-two samples were taken from natural populations in the region of Malham, Yorkshire. The samples were taken in pairs, one member of each pair from a habitat with a relatively dark background and one from a nearby habitat with a relatively light background. In general, samples from “darker” habitats had higher proportions of the dark-shelled and dark-bodied morphs. These associations are highly significant, and they can most easily be explained in terms of visual selection by predators.

    Original languageEnglish
    Pages (from-to)102-106
    Number of pages5
    Issue number1
    Publication statusPublished - 1974


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