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1 November 2013 Confusion and Isolation in the Courtship of Two Sympatric and Synchronic Tarantula Spiders (Mygalomorphae, Theraphosidae)
Fernando G. Costa, Luciana Baruffaldi, Carlos Perafán, Cintya Perdomo, Alejandra Panzera, Laura Montes de Oca, Fernando Pérez-Miles
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Abstract

Strong reproductive barriers are expected between similar species that co-occur in time and space. We experimentally analysed sexual interactions between the theraphosids Acanthoscurria suina and Eupalaestrus weijenberghi which met those conditions. Unexpectedly, males courted on heterospecific female cues. Furthermore, A. suina females seemed to be more receptive to heterospecific males than conspecific ones in early courtship. Although precopulatory confusion occurred, no interspecific copulations were observed, which indicate that reproductive barriers operate.

Fernando G. Costa, Luciana Baruffaldi, Carlos Perafán, Cintya Perdomo, Alejandra Panzera, Laura Montes de Oca, and Fernando Pérez-Miles "Confusion and Isolation in the Courtship of Two Sympatric and Synchronic Tarantula Spiders (Mygalomorphae, Theraphosidae)," Arachnology 16(3), 106-109, (1 November 2013). https://doi.org/10.13156/100.016.0306
Published: 1 November 2013
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