Reproductive isolation among three populations of the genus Grammostola from Uruguay (Araneae, Theraphosidae) Aislamiento reproductivo entre tres poblaciones del género Grammostola de Uruguay (Araneae, Theraphosidae)

Reproductive isolation among three populations of the genus Grammostola from Uruguay (Araneae, Theraphosidae) Aislamiento reproductivo entre tres poblaciones del género Grammostola de Uruguay (Araneae, Theraphosidae)

Ethological isolation of individuals from three allopatric Grammostola populations of Uruguay, G. iheringi (Keyserling, 1891), G. mollicoma (Auserer, 1875) northern population and G. mollicoma southern population, was tested under laboratory conditions. Grammostola iheringi behaved as a reproductive...

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Bibliographic Details
Main Authors: Rodrigo Postiglioni, Fernando G. Costa
Format: Article
Language:English
Published: Fundação Zoobotânica do Rio Grande do Sul 2006-03-01
Series:Iheringia: Série Zoologia
Subjects:
Grammostola iheringi
Grammostola mollicoma
aislamiento reproductivo
aislamiento etológico
reproductive isolation
ethological isolation
Online Access:http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212006000100013
Description
Summary:Ethological isolation of individuals from three allopatric Grammostola populations of Uruguay, G. iheringi (Keyserling, 1891), G. mollicoma (Auserer, 1875) northern population and G. mollicoma southern population, was tested under laboratory conditions. Grammostola iheringi behaved as a reproductive isolated species, whereas the two populations of G. mollicoma did not show ethological isolation between them. However, ecological isolating reproductive mechanisms could be acting on G. mollicoma populations. Artificial burrows seem to be important for reproductive isolation in these species.<br>Se testeó bajo condiciones de laboratorio, el aislamiento etológico de individuos de poblaciones alopátridas de Grammostola de Uruguay, G. iheringi (Keyserling, 1891), G. mollicoma (Auserer, 1875) población norte y G. mollicoma población sur. Grammostola iheringi se comportó como una especie aislada, mientras que las dos formas de Grammostola no mostraron aislamiento etológico. Sin embargo, mecanismos de aislamiento reproductivo ecológico podrían estar actuando entre las poblaciones de G. mollicoma. Las cuevas artificiales serían importantes para el aislamiento reproductivo de estas especies.
ISSN:0073-4721
1678-4766

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