Malacologic benthic fauna of the Socorro Island Littoral, Revillagigedo, Mexico
A survey on rocky shore mollusks was conducted in some bays of Socorro Island during February and May 1991 and March 1992.Specific richness and composition were analyzed for all expeditions.Relative density and frequency were analyzed only for the last two.The Importance Value Index (IVI) and Jaccard and Morisita similarity indexes were also calcul