Breaking the cliche: sex reversal in size dimorphism and mobility in South American Allocosinae (Lycosidae) spiders

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dc.contributor.authorAisenberg, Anita
dc.contributor.authorBollatti, Fedra
dc.contributor.authorOviedo-Diego, Mariela
dc.contributor.authorAlbin, Andrea
dc.contributor.authorAlves Dias, Marcelo
dc.contributor.authorArnedo, Miquel A.
dc.contributor.authorBrescovit, Antonio D.
dc.contributor.authorCasacuberta, Marcelo
dc.contributor.authorCavassa, Diego
dc.contributor.authorGonnet, Veronica
dc.contributor.authorIzquierdo, Matias
dc.contributor.authorLaborda, Alvaro
dc.contributor.authorPiacentini, Luis N.
dc.contributor.authorPliscoff, Patricio
dc.contributor.authorPostiglioni, Rodrigo
dc.contributor.authorSimo, Miguel
dc.contributor.authorTexeira, Renato A.
dc.contributor.authorBidegaray-Batista, Leticia
dc.date.accessioned2025-01-20T20:07:47Z
dc.date.available2025-01-20T20:07:47Z
dc.date.issued2023
dc.description.abstractTypically, females and males are expected to have characteristic sexual strategies and patterns of size dimorphism, but these generalizations are subject to exceptions. The occurrence of atypical cases has been related to species or populations from environments under strong physical, ecological and/or social constraints. Allocosa marindia and Allocosa senex are two coastal spiders (Lycosidae: Allocosinae) with reversal in sex roles and sexual size dimorphism. Males are larger than females, and females are the mobile sex that initiates courtship. It is unclear whether the occurrence of non-typical sexual traits in Allocosinae spiders is correlated with coastal habitats. Our aim was to study sexual size dimorphism and surface mobility in Allocosinae spiders from different habitats throughout South America. We revised specimens from scientific collections and performed 3-day samplings to collect individuals and determine nocturnal surface mobility. We analysed a total of 1071 Allocosinae adult individuals from 18 species and/or morphotypes. Our results revealed new species inhabiting coastal habitats with reversal in sexual size dimorphism and higher nocturnal surface activity in females; however, not all coastal species shared those characteristics. Future studies will focus on studying other ecological, physiological and/or phylogenetic factors that could be shaping the origin and maintenance of sex role reversal in Allocosinae.
dc.fuente.origenWOS
dc.identifier.doi10.1093/biolinnean/blad058
dc.identifier.eissn1095-8312
dc.identifier.issn0024-4066
dc.identifier.urihttps://doi.org/10.1093/biolinnean/blad058
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/91845
dc.identifier.wosidWOS:001042711200001
dc.issue.numero2
dc.language.isoen
dc.pagina.final239
dc.pagina.inicio224
dc.revistaBiological journal of the linnean society
dc.rightsacceso restringido
dc.subjectactivity patterns
dc.subjectsex role reversal
dc.subjectsex traits
dc.subjectsexual dimorphism
dc.subjectwolf spiders
dc.subject.ods15 Life on Land
dc.subject.odspa15 Vida de ecosistemas terrestres
dc.titleBreaking the cliche: sex reversal in size dimorphism and mobility in South American Allocosinae (Lycosidae) spiders
dc.typeartículo
dc.volumen140
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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