Resumo

QUIROS R, JORGE ALEXANDER  e  ARIAS R, JORGE ENRIQUE. Taxocenosis of mollusks and crustaceans on roots of Rhizophora mangle (Rhizophoraceae) at Cispatá Bay, Córdoba, Colombia. Acta biol.Colomb. [online]. 2013, vol.18, n.2, pp.329-340. ISSN 0120-548X.

Despite the existing knowledge on the ecology of mangroves at Cispatá Bay, few studies have focused on the association of invertebrates on red mangrove roots, so between December 2010 and September 2011, it was characterized taxocenosis of mollusks and crustaceans on roots of Rhizophora mangle in two study sites at Cispatá Bay, Colombia. For the collections of biological material were randomly taken three homogeneous mangrove roots in diameter. Mollusks and crustaceans were obtained from the root surface with a scraping knife then were removed and fixed in 10 % formalin for later identification to species using specialized taxonomic keys. Of the 12289 individuals collected in the four samples, 10470 belonged to the phylum Mollusca (85,2 %) and the remaining 1819 to subphylum Crustacea (14,8 %). For mollusks were identified 14 species distributed in 11 families and two classes; Bivalvia and Gastropoda. For crustaceans were identified 24 species distributed in 16 families and four orders; Sessillia, Decapoda, Isopoda and Amphipoda. In both sectors sampling Mytella charruana, Balanus eburneus and Crassostrea rhizophorae were the most important species in terms of abundance, however mollusks like M. charruana and B. eburneus have a great ability to adapt and adjust to changing hydroclimatic, which was reflected in the dominance of these species in the sector with the greatest influence Sinu River. The presence of crustaceans Petrolisthes armatus and Aratus pisonii in the sector with more proximity to the Caribbean Sea indicate that are species with great mobility and physiological adaptation mechanisms.

Palavras-chave : Caribbean Sea; Crustaceans; Mollusks; Rhizophora mangle; Sinu River.

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