ABSTRACT. New species of Heleobia (Rissooidea, Hydrobiidae) from south plain coast of Brazil. Heleobia robusta, new species from plain coast of Rio Grande do Sul, Brazil, is described. Conchology, conchometry, soft-part morphology including head-food, pallial structures, radula and some aspects of the female and male reproductive systems are provided.
ResumoObjetivando avaliar a ocorrência de invertebrados associados aos macroaglomerados de Limnoperna fortunei (Dunker, 1857) (Silva & Thomé, 1985); Chilina parva (Martens, 1868) e Corbicula fl uminea (Müller, 1774). As relações interespecífi cas destes táxons são até o momento pouco conhecidas.
Unitermos: invertebrados, incrustrações, invasora, lago sub-tropical, mexilhão dourado
AbstractOccurrence of limnic molluscs and crustaceous on clusters of the golden mussel Limnoperna fortunei (Dunker, 1857), formed on "sarandi" at Guaíba Lake (RS, Brazil). In order to verify the occurrence of invetebrates associated with macro clusters of Limnoperna fortunei (Dunker, 1857) formed on branches of "sarandi" (Chephalanthus glabratus (Spreng.) K. Schum), quantitative samplings (N=28) were conducted for two years (2002 to 2004) at Veludo Beach on Guaíba Lake (municipality of Porto Alegre, RS, Brazil). From Comunicação Breve Biotemas, 21 (4): 179-182, dezembro de 2008
Propõe-se a transferência do gênero monitípico Parodizia Medina, 1959 de Bithyniidae (Prosobranchia) para Pyramidellidae (Heterobranchia). A proposta está baseada em dados morfológicos de espécimens de P. uruguayensis Medina, 1959 procedentes da bacia do rio Tramandaí, Rio Grande do Sul, Brasil.
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