RESUMO
Habroconus semenlini is a micro-terrestrial gastropod native to South America. There are no previous studies on its biology. We studied its pattern of growth, fertility and lifespan under laboratory conditions. For this purpose, 80 snails were either grouped or kept isolated (40 animals in each condition) during their lifetime. Growth is indeterminate and the species is capable of self-fertilization with high reproductive success. Grouped snails had lower fecundity than the animals that were kept in isolation. This species has a short lifespan and only one reproductive period, which characterizes the occurrence of semelparity. Rev. Biol. Trop. 57 (4): 1217-1222. Epub 2009 December 01.
Habroconus semenlini es un gastrópodo micro-terrestre nativo de América del Sur. Actualmente se carece de estudios sobre su biología. Este estudio tuvo como objetivo verificar el patrón de crecimiento, la fecundidad y la esperanza de vida de esta especie en condiciones de laboratorio. Con este fin, 80 caracoles fueron mantenidos aislados o agrupados (40 animales en cada condición) durante su ciclo de vida. La especie tiene crecimiento indeterminado y es capaz de auto-fertilización con alto grado de éxito reproductivo. Los caracoles agrupados tuvieron menor fecundidad que los que se mantuvieron en aislamiento. Esta especie tiene una vida útil corta, y sólo un período reproductivo, lo que caracteriza la semelparidad.
Assuntos
Animais , Feminino , Masculino , Estágios do Ciclo de Vida/fisiologia , Caramujos/crescimento & desenvolvimento , Fertilidade , Endogamia , Laboratórios , Longevidade , Caramujos/fisiologia , Fatores de TempoRESUMO
Habroconus semenlini is a micro-terrestrial gastropod native to South America. There are no previous studies on its biology. We studied its pattern of growth, fertility and lifespan under laboratory conditions. For this purpose, 80 snails were either grouped or kept isolated (40 animals in each condition) during their lifetime. Growth is indeterminate and the species is capable of self-fertilization with high reproductive success. Grouped snails had lower fecundity than the animals that were kept in isolation. This species has a short lifespan and only one reproductive period, which characterizes the occurrence of semelparity.
