SOFT-BOTTOM DECAPOD AND STOMATOPOD CRUSTACEANS OF THE CONTINENTAL-SHELF OFF JALISCO AND COLIMA, MEXICO

A systematic list of decapod and stomatopod crustaceans of the soft bo ttoms of the continental shelf off Jalisco and Colima, Mexico, is pres ented. The specimens were obtained as part of an integral study on the biodiversity and fisheries potential of the marine resources of the e astern tropical Pacific region. Eighty-four shrimp trawls were done at seven localities, with four stations within each locality, at 20, 40, 60 and 80 m depth. The sampling schedule was repeated three times dur ing one annual cycle (from May 1995 to March 1996) in order to include seasonal changes of the fauna. A total of 60 species, included in 20 families of decapods and 4 of stomatopods, were identified. This numbe r of species is 13.7% of the total reported for the region between Ban deras Bay and Guatemala (457 species). Some zoogeographic and biodiver sity aspects are discussed that confirm previous results for the regio n. The extension of geographic ranges for two species is reported.