Abstract
Three cruises (DEM 1, DEM II, DEM III) were conducted during 1995 and 1996. Seven localities were visited during each cruise at four different depths (20, 40, 60 and 80 m), with paired shrimp trawls on the continental shelf off Jalisco and Colima, Mexico. Five genera and nine species belonging to the families Eurysquillidae, Hemisquillidae, Lysiosquillidae and Squillidae were identified. The highest richness was found on the DEM III cruise (eight species), with an average abundance of 74 ind/ha. During DEM III Squilla panamensis was the most abundant species (average = 58 ind/ha). Squilla hancocki was the most abundant on the DEM 1 and DEM II cruises, with 18 and 44 ind/ha, respectively. The highest abundance was observed at the 60 m depth, with temperature averages between 13.9 and 23.9ºC. The highest co-occurrence frequency (31.7%) was found between S. hancocki and S. panamensis.
Highlights
Los crustáceos estomatópodos constituyen un grupo importante dentro de la fauna bentónica marina por su diversidad y abundancia relativa
One of the ob.jectives was to study the distribution and abundance of the different species of stomatopods of the continental shelf off Jalisco and Colima, Mexico, as the only records available for this area are those of Crenatosquilla oculinova at Charnela and Santiago, Squilla hancocki and S. panamensis at Tenacatita, and S parva off Manzanillo (Manning, 1972a; Hendrickx and SalgadoBarragán, 1991)
The specimens analysed were obtained by nocturnal trawls during three research cruises, called DEM 1, DEM II and DEM III, conducted between 1995 and 1996 aboard the R/V BIP-Y of the Coastal Ecology Center of the University of Guadalajara
Summary
Los crustáceos estomatópodos constituyen un grupo importante dentro de la fauna bentónica marina por su diversidad y abundancia relativa. Además, una serie de publicaciones de carácter más específico, que incluyen la descripción de nuevas especies, ampliaciones del intervalo de distribución y listados faunísticos One of the ob.jectives was to study the distribution and abundance of the different species of stomatopods of the continental shelf off Jalisco and Colima, Mexico, as the only records available for this area are those of Crenatosquilla oculinova at Charnela and Santiago, Squilla hancocki and S. panamensis at Tenacatita, and S parva off Manzanillo (Manning, 1972a; Hendrickx and SalgadoBarragán, 1991). Medidos, sexados y pesados en fresco y se identificaron mediante el uso de claves taxonómicas especializadas, como Hendrickx y SalgadoBarragán ( 199 1)
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