Distribution pattern of Anomalocardia brasiliana Gmelin, 1971 (Mollusca, Bivalvia) in a tropical coastal ecosystem

Soraya EL-DEIR, Sigrid NEUMANN-LEITÃO, Pedro Augusto M. de C MELO


Anomalocardia brasiliana (Gmelin, 1791) (Bivalvia, Veneridae) distribution pattern was studied from September 2006 to June 2007 in the Itamaracá tropical estuarine system in Northeastern Brazil. Three areas were selected and in each one three transects with three equidistant stations were plotted. At each station, four samples were collected with a 0.0626 m2 quadrate. Shell morphometric measurements showed the presence of four size classes, varying from <10 to >20 mm. A total of 56,865 individuals of A. brasiliana were collected and the three banks studied showed significant differences in abundance (Kruskal-Wallis-Dunn p< 0.05). Ramalho area presented 49% of the total collected individuals and the size class 11 to 15 mm predominated in all sites. Key words: Bivalve mollusk; Anomalocardia brasiliana; Distribution pattern.

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DOI: https://doi.org/10.5914/tropocean.v37i1-2.5152


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