Ecology of the non-native snail Sinotaia cf quadrata (Caenogastropoda: Viviparidae). A study in a lowland stream of South America with different water qualities
Título del documento: Ecology of the non-native snail Sinotaia cf quadrata (Caenogastropoda: Viviparidae). A study in a lowland stream of South America with different water qualities
Revista: Anais da Academia Brasileira de Ciencias
Base de datos: PERIÓDICA
Número de sistema: 000409005
ISSN: 0001-3765
Autores: 1
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2
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Instituciones: 1Universidad Nacional de La Plata, Instituto de Limnología "Dr. R.A. Ringuelet", La Plata, Buenos Aires. Argentina
2Universidad Nacional de La Plata, Facultad de Ciencias Naturales y Museo, La Plata, Buenos Aires. Argentina
Año:
Periodo: Jun
Volumen: 89
Número: 2
Paginación: 1059-1072
País: Brasil
Idioma: Inglés
Tipo de documento: Artículo
Enfoque: Experimental, aplicado
Resumen en inglés Sinotaia quadrata is a snail native from Asia recorded for the first time in South America in 2009 in central Argentina. In 2015, this species was also found in a lowland stream with different water qualities. Our aims were to contribute to the knowledge of its population ecology and to compare the individuals from the two locations anatomically. Snails were searched at 6 sites, where physicochemical and hydraulic parameters were measured. Biological samples were also taken at two sites (S3 and S4) to study the population traits of S. cf quadrata (density, size structure, fecundity and sex ratio) and to assess the water quality through macroinvertebrates' biological indices (richness, diversity and IBPamp). Physicochemical and biological parameters allowed us classifying sites as "moderately polluted" (S3) and "heavily polluted" (S4). At S4, the population showed a lower density, larger individuals, higher fecundity and a scarce representation of young snails. The differences observed in the radula and mantle border of snails from the two geographical regions might be attributed to environmental differences. We conclude that this species is tolerant to a wide range of environmental variables which, along with its high fecundity and morphological plasticity, could allow this species to colonize neighbor streams
Disciplinas: Biología
Palabras clave: Ecología,
Moluscos,
Caracoles de agua dulce,
Especies exóticas,
Tolerancia ambiental,
Fecundidad,
Plasticidad morfológica,
Sinotaia quadrata,
Caenogastropoda
Keyword: Biology,
Ecology,
Molluscs,
Freshwater snails,
Exotic species,
Environmental tolerance,
Fecundity,
Morphological plasticity,
Sinotaia quadrata,
Caenogastropoda
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