Long-Term Persistence and Water Resistance of Female Sex Cues in the Tarantula Eupalaestrus weijenberghi (Araneae: Theraphosidae)

Fernando G. Costa; Bruno Curbelo; Fernando Pérez-Miles

doi:10.13156/arac.2015.16.9.311

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Fernando G. Costa,¹ Bruno Curbelo,¹ Fernando Pérez-Miles^*

¹Laboratorio de Etología, Ecología y Evolución, Instituto de Investigaciones Biológicas Clemente Esta

^*Sección Entomología, Facultad de Ciencias, Universidad de la República, Iguá 4225, 11400 Montevideo, Uruguay email: myga@fcien.edu.uy

Abstract

The presence of pheromones has been reported for several spider species but their persistence in field conditions has scarcely been studied. We test the activity and persistence of female sex cues outdoor in the tarantula Eupalaestrus weijenberghi (Thorell, 1894), using male courtship as an indicator of cue attraction. We studied female silk fields in two conditions: protected and exposed and in both we found a long persistence of sex signals, up to 55 and 46 days, respectively. We discuss the nature and adaptive significance of these cues.

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Fernando G. Costa, Bruno Curbelo, and Fernando Pérez-Miles "Long-Term Persistence and Water Resistance of Female Sex Cues in the Tarantula Eupalaestrus weijenberghi (Araneae: Theraphosidae)," Arachnology 16(9), 311-313, (1 November 2015). https://doi.org/10.13156/arac.2015.16.9.311

Published: 1 November 2015

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