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SOME ECOLOGICAL DATA ON THE GASTROPOD RAPANA THOMASIANA
CROSSE ALONG THE ROMANIAN BLACK SEA SHORE


Marian-Traian Gomoiu
Institut Roumain de Recherches Marines Constanta


Abstract
The present paper reports the results of the observations made
directly, by diving, and in aquariums, as well as the biometrical 
measurements of 390 Rapana Thomasiana specimens, collected on the 
beaches of Mamaia and Agigea. The data found, as compared to those
in the literature, show that the predator gastropod Rapana is now
gradually invading the Romanian shore, representing a danger for
bivalves, especially for rocky mussels.