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Artículo

Reproductive isolation between two populations of Aglaoctenus lagotis , a funnel-web wolf spider

González Pérez, María de la MacarenaIcon ; Peretti, Alfredo VicenteIcon ; Costa, Fernando G.
Fecha de publicación: 03/2015
Editorial: Wiley Blackwell Publishing, Inc
Revista: Biological Journal of The Linnean Society
ISSN: 0024-4066
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Otras Ciencias Biológicas

Resumen

Aglaoctenus lagotis (Lycosidae: Sosippinae) is a spider that, in contrast to the predominant wandering habit of the family, constructs funnel webs. The species is widely distributed throughout the Neotropics and is credited with high levels of intraspecific variation. Here, we evaluate whether reproductive isolating barriers operate between some populations of A. lagotis. We used heterotypic encounters between individuals from two distant localities: southern Uruguay (SU) and Central Argentina (CA). Additionally, we used spiders from an ntermediate locality, western Uruguay (WU), where both forms of the species overlap (SU.WU was used to describe individuals from WU reminiscent of those from SU; and CA.WU was used to describe individuals from WU reminiscent of those from CA). No copulations occurred between SU and CA individuals, whereas a single and atypical copulation occurred between SU.WU and CA.WU individuals. Attacks (only by females on males) were rare. In tests of choice based on silk cues, SU males did not prefer homotypic cues but almost did not court CA females, whereas CA males preferred homotypic cues but usually courted heterotypic females. These findings, with a previously reported temporal asynchrony between populations, suggest the occurrence of reproductive isolation between both spider forms and a speciation process favoured by the wide distribution and plasticity of the species.
Palabras clave: Intraspecific Variation , Lycosid Spider , Neotropics , Sedentary , Speciation
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/44893
DOI: https://dx.doi.org/10.1111/bij.12448
URL: https://academic.oup.com/biolinnean/article/114/3/646/2415964
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Articulos(CCT - CORDOBA)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - CORDOBA
Citación
González Pérez, María de la Macarena; Peretti, Alfredo Vicente; Costa, Fernando G.; Reproductive isolation between two populations of Aglaoctenus lagotis , a funnel-web wolf spider; Wiley Blackwell Publishing, Inc; Biological Journal of The Linnean Society; 114; 3; 3-2015; 646-658
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