Investigating paedomorphism in the evolution of L. saxatilis

Littorina saxatilis is a species of marine gastropods found on the intertidal rocky shores of Western Europe.

Littorina saxatilis (rough periwinkle) is often used as an example of adaptation to different ecological niches, with ecotypes adapted to life at different levels of the seashore. Professor Emilio Rolán-Alvarez and his colleagues at the University of Vigo, Spain, investigate whether one ecotype may have evolved from another by paedomorphosis. Their results indicate that, while there is some evidence in […]

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