Mate choice by males has been recognized at least since Darwin's time, but its phylogenetic
distribution and effect on the evolution of female phenotypes remain poorly known …

(Invited Article) Abstract Sexual size dimorphism (SSD) is widespread and variable among
animals. According to the differential equilibrium model, SSD in a given species is expected …

Molluscs comprise the second largest phylum of animals (after arthropods), occurring in
virtually all habitats. Some are commercially important, a few are pests and some carry …

Snails belonging to the genus Littorina are the familiar periwinkles found on rocky sea
shores throughout Western Europe, Scandinavia, North America, Siberia and Japan …

The study of speciation in recent populations is essentially a study of the evolution of
reproductive isolation mechanisms between sub‐groups of a species. Prezygotic isolation …

Snails are highly unusual among multicellular animals in that they move on a layer of costly
mucus, leaving behind a trail that can be followed and utilized for various purposes by …

The ovoviviparous Littorina saxatilis (Olivi) can be found in many intertidal habitats. Winkles
from different habitats have different morphologies and behaviours, which are usually …

We quantitatively studied movement behaviour in the gastropod Littorina littorea in
laboratory experiments during periods of their non-mating season (November 1992) and …

When divergent populations are connected by gene flow, the establishment of complete
reproductive isolation usually requires the joint action of multiple barrier effects. One …

Two morphs (ecotypes) of the marine snail Littorina saxatilis coexist along Galician exposed
rocky shores. They hybridize, but gene flow is impeded by a partial prezygotic reproductive …