Genetic divergence between populations and species of talitrids from Aegean Islands

The allozymic variation of four species of supralittoral amphipod including Talitrus saltator, Orchestia gammarellus, O. montagui and Talorchestia deshayesii, was explored in samples collected from five Aegean islands. Low levels of genetic variability were found with slight differences between the species. Data from intergeneric comparisons indicated a separation of the genus Orchestia from the other two genera. Gene flow levels were found to be generally low within T. saltator but generally high within O. montagui.