Abstract

PEREZ PEREZ, Manuel  and  ALDANA ARANDA, Dalila. Distribución, abundancia y morfometría de Strombus costatus, Turbinella angulata, Busycon contrarium y Pleuroploca gigantea (Mesogasteropoda: Strombidae, Turbinellidae, Neptuneidae y Fasciolaridae) en Yucatán, México. Rev. biol. trop [online]. 2000, vol.48, n.1, pp.145-152. ISSN 0034-7744.

The distribution, abundance and morphology of four gastropod species are analized for Dzilam de Bravo, Yucatan, Mexico. Samples were taken by a snorkeler from 100 x 300 m plots (31 plots in a 930 000 m² area) between august and september 1994. 896 individuals were examined and the more abundant species were Strombus costatus (44.42%), Turbinella angulata (42.75 %), Busycon contrarium (5.47 %) and Pleuroploca gigantea (3.46 %). Fasciolaria tulipa and Vasum muricatum represented 3.9 % of individuals. We estimated a mean of 0.00096 individuals/m² . The mean shell length of S. costatus was 182 mm (SD±20;N 398), T. angulata 232 mm (SD±52; n=383), B. contrarium 175 mm (SD±48; n=49), and P. gigantea 377 mm (SD±55; n=31).

Keywords : Abundance; distribution; morphology; gastropod.