.
Abstract
Bivalve molluscs of São Marcos locality, Medium Uruguay River Basin, Brazil. To verifi cation of quali-quantitative it has been accomplished collected of bivalve molluscs during the period of twelve months, together with analysis of some abiotic variables in the middle care of Uruguay river, situated in São Marcos, Uruguaiana municipality. The place where the collects has been accomplished, were divided in three distinct spots, considerating the substract type predominant; sand, rock and mud. The individuals were collected usinghands and with. The selection screen aid, of 0.8mm size net and were conserved in a dry environment. They had been collected a total of 1,022 units of bivalves, wich belong to 12 taxa, being that of these only specimens
Cyanocyclas limosa and Diplodon parallelopipedon had been captured alive (tanatocenosis). It had great quantitative predominance of Corbicula fluminea and Diplodon uruguayensis. With exception of bivalves invading,
the too much species had been collected only in the slimy substratum. Other species occurrence were Mycetopoda siliquosa and Anodontites trigonus, there two species a vulnerable to extinction in Rio Grande do Sul.
Downloads
Published
Issue
Section
License
Copyright (c) 2007 André Ribeiro Castillo, Luciano Gonçalves Brasil, Enrique Querol, Marcus Vinicius Morini Querol, Édison Vicente Oliveira, Maria Cristina Dreher Mansur
This work is licensed under a Creative Commons Attribution 4.0 International License.
After the electronic publication of the manuscript, the authors are entitled, without any restriction, on its contents.
License Creative Commons Atribuição 4.0 Internacional - CC BY
Authors are able to take on additional contracts separately, non-exclusive distribution of the version of the paper published in this journal (ex.: publish in institutional repository or as a book), with an acknowledgment of its initial publication in this journal.