Data/hora: 11/06/2024 04:40:01

Provedor de dados: | Revista Brasileira de Zoologia
País: | Brazil
Título: | Is more better? Sexual confusion during courtship between two sympatric and synchronic tarantulas: Acanthoscurria suina and Eupalaestrus weijenberghi
Autores: | Costa,Fernando G.; De Oca,Laura Montes; Perdomo,Cintya; Ortiz-Villatoro,David; Baruffaldi,Luciana; Pérez-Miles,Fernando.
Data: | 2013-10-01
Ano: | 2013
Palavras-chave: | Courtship; Neotropical tarantulas; Reproductive isolation; Sex pheromone; Sexual selection.
Resumo: | When two similar species co-occur in time and space, strong mechanisms isolating them from each other are expected. Acanthoscurria suina Pocock, 1903 and Eupalaestrus weijenberghi (Thorell, 1894) are two sympatric and synchronic tarantulas that inhabit burrows in Uruguay's meadows. Here we test how and when reproductive isolation operates between these species. We exposed females of each species simultaneously to two males: either one male of each species, or two males of the same species. Males courted females of both species. Contrary to expectations, however, females of A. suina responded more effusively to heterospecific than to conspecific males, whereas females of E. weijenberghi only responded to conspecific males. Clasping (prelude of mating) was only recorded for couples of the same species. Females of A. suina at first seem to prefer the stronger body vibrations performed by heterospecific courting males than by males of their own species.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702013000500011
Editor: | Sociedade Brasileira de Zoologia
Relação: | 10.1590/S1984-46702013000500011
Formato: | text/html
Fonte: | Zoologia (Curitiba)  v.30 n.5 2013
Fonte: | info:eu-repo/semantics/openAccess