Results 31 to 40 of about 72 (58)
Nuevos registros de moluscos para el cuaternario continental de Uruguay
El Cuaternario continental tiene una amplia distribución a lo largo del territorio uruguayo. Contiene un variado contenido fosilífero, siendo bien conocida y estudiada su asociación de mamíferos típicos del Cuaternario de Sudamérica.
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State of the art in taxonomy of Chilean freshwater bivalves: Advances and difficulties [PDF]
An update of the Chilean freshwater bivalve taxonomy is presented. The bivalves described at present are adscribed to two families: Hyriidae represented only by the genus Diplodon with two species (D. chilensis and D.
Parada, Esperanza, Peredo, Santiago
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State of the art in taxonomy of Chilean freshwater bivalves: advances and difficulties
An update of the Chilean freshwater bivalve taxonomy is presented. The bivalves described at present are adscribed to two families: Hyriidae represented only by the genus Diplodon with two species (D. chilensis and D.
Peredo, S, Parada, E
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Análisis tafonómico de moluscos por debajo de la interfase agua-sedimento en una laguna del sudeste bonaerense, Argentina [PDF]
Se analizó la preservación de los restos de moluscos por debajo de la interfase agua-sedimento en la laguna Nahuel Rucá (37°37'S, 57°25'O). El objetivo fue determinar el grado de alteración tafonómica y estimar la extensión de la zona tafonómicamente ...
De Francesco, Claudio G. +1 more
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Diferencias en la preservación de moluscos entre sistemas lóticos y lénticos del sudeste de la provincia de Buenos Aires, Argentina [PDF]
El objetivo del presente trabajo es comparar la preservación de moluscos entre un ambiente lótico y uno léntico de la región pampeana. El estudio se llevó a cabo en el sudeste de la provincia de Buenos Aires.
Tietze, Eleonor
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Uso dos macroinvertebrados bentônicos na avaliação da qualidade das águas das Lagoas Marcelino, Peixoto e Pinguela, Município de Osório, Rio Grande do Sul [PDF]
O presente estudo teve como objetivo principal caracterizar a estrutura da comunidade de macroinvertebrados bentônicos associados ao sedimento nas lagoas Marcelino, Peixoto e Pinguela, pertencentes a Bacia Hidrográfica do Rio Tramandaí.
Garcia, Lisandro Becker
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ABSTRACT The gonadal organization and cytological characteristics of gametogenesis in a population of the freshwater clam Musculium argentinum (d'Orbigny, 1835) are described. Sections of the rather small gonad demonstrate the existence of hermaphroditic specimens, and is composed of hermaphrodite follicles among the intestine coils in the posterior ...
Santiago Peredo +3 more
openaire +2 more sources
ABSTRACT Sphaerids have adopted a variety of life strategies that have allowed them to show a cosmopolitan distribution. Among these strategies, those related to reproduction, such as sexuality (hermaphroditism), offspring incubation, fertility, number of generations per year, times an individual reproduces during its lifespan, among others, have been ...
Pedro Jara-Seguel +3 more
openaire +2 more sources

