Planorbidae, Lymnaeidae and Physidae of Argentina (Mollusca: Basommatophora)

Abstract

In the course of several trips to Argentina I had the opportunity of collecting specimens of Acrorbis petricola

Differences on allocation of available resources, in growth, reproduction, and survival, in an exotic gastropod of Physidae compared to an endemic one

“…In Argentina, P. acuta is mentioned since the seventy decade (PARAENSE, 2005) and nowadays it is widespread and abundant, fundamentally in environments related to Del Plata basin, where the native species Stenophysa marmorata Guilding, 1828 inhabits.…”

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“…Los gastrópodos pulmonados de agua dulce del género Biomphalaria Preston (Planorbidae) tienen una amplia distribución geográfica en América del Sur, y son característicos y frecuentes en la Región Neotropical. Para su conocimiento fueron importantes los trabajos de Pilsbry (1924), Baker (1945), Hubendick (1955) y entre los modernos, Rumi (1986Rumi ( , 1991, que permitieron conocer un importante número de géneros y especies dentro de la familia Planorbidae, basados en estudios anatómicos (Paraense, 2003(Paraense, , 2005.…”

Individual growth of Drepanotrema cimex (Pulmonata: Planorbidae) from Arenalcito pond, natural reserve multiple uses Martin García Island, Buenos Aires, Argentina

“…This genus includes nine species, of which six are found in Argentina: Drepanotrema cimex (Moricand, 1839), Drepanotrema anatinum (d'Orbigny,1835), Drepanotrema depressissimum (Moricand, 1839), Drepanotrema heloicum (d'Orbigny,1835), Drepanotrema kermatoides (d'Orbigny, 1835), and Drepanotrema lucidum (Pfeiffer, 1839) (Paraense, 2005;Rumi et al, 2006). To date, the ecological and biological aspects of Drepanotrema are poorly known (Bonetto et al, 1990;Rumi, 1991;Hamman et al, 1993;Rumi et al, 1997 and2004;Bueno-Silva and Fischer, 2005); the morphology and taxonomy has been studied by Baker (1945), Paraense and Deslandes (1958), and Paraense (1975 and1980).…”