Morphological aspects and incubation in three species of Corbicula Mühlfeld, in Guaíba Lake, Rio Grande do Sul, Brazil (Bivalvia, Corbiculidae)

Authors

  • Demetrius da Silva Martins Universidade Federal do Rio Grande do Sul, Instituto de Biociências, Laboratório de Malacologia
  • Inga Ludmila Veitenheimer-Mendes Universidade Federal do Rio Grande do Sul, Instituto de Biociências, Laboratório de Malacologia
  • Maria Cristina Faccioni-Heuser Universidade Federal do Rio Grande do Sul, Centro de Microscopia Eletrônica

Keywords:

Freshwater clams, siphons, viviparity, Corbicula fluminea, Corbicula largillierti, Corbicula. aff. fluminalis

Abstract

Three species of Corbicula identified in Guaíba Lake are compared in respect to the external morphology of their soft parts and aspects of branchial incubation. Morphological differences are most obvious in the siphons. For the first time, individuals of C. fluminea have been found with incubation occurring in the outer as well as the inner demibranchs. Individuals of C. largillierti showed incubation only in the inner demibranchs. In specimens identified as C. aff. fluminalis, tetrabranchial incubation predominated.
Issue Cover Vol.: 6 Num: 2

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Published

2006-01-01

How to Cite

Martins, D. da S., Veitenheimer-Mendes, I. L., & Faccioni-Heuser, M. C. (2006). Morphological aspects and incubation in three species of Corbicula Mühlfeld, in Guaíba Lake, Rio Grande do Sul, Brazil (Bivalvia, Corbiculidae). Biota Neotropica, 6(2). Retrieved from //www.biotaneotropica.org.br/BN/article/view/195

Issue

Vol. 6 No. 2 (2006): v6n2

Section

Articles