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Phylogeography of the widespread Caribbean spiny orb weaver Gasteracantha cancriformis

dc.creatorChamberland, Lisaspa
dc.creatorSalgado-Roa, Fabian C.spa
dc.creatorBasco, Almaspa
dc.creatorCrastz-Flores, Amandaspa
dc.creatorBinford, Greta J.spa
dc.creatorAgnarsson, Ingispa
dc.date.accessioned2020-06-11T13:21:52Z
dc.date.available2020-06-11T13:21:52Z
dc.date.created2020-04-30spa
dc.description.abstractBackground: Modern molecular analyses are often inconsistent with pre-cladistic taxonomic hypotheses, frequently indicating higher richness than morphological taxonomy estimates. Among Caribbean spiders, widespread species are relatively few compared to the prevalence of single island endemics. The taxonomic hypothesis Gasteracantha cancriformis circumscribes a species with profuse variation in size, color and body form. Distributed throughout the Neotropics, G. cancriformis is the only morphological species of Gasteracantha in the New World in this globally distributed genus. Methods: We inferred phylogenetic relationships across Neotropical populations of Gasteracantha using three target genes. Within the Caribbean, we estimated genetic diversity, population structure, and gene flow among island populations. Results: Our findings revealed a single widespread species of Gasteracantha throughout the Caribbean, G. cancriformis, while suggesting two recently divergent mainland populations that may represent separate species, diverging linages, or geographically isolated demes. The concatenated and COI (Cytochrome c oxidase subunit 1) phylogeny supported a Caribbean clade nested within the New World. Genetic variability was high between island populations for our COI dataset; however, gene flow was also high, especially between large, adjacent islands. We found structured genetic and morphological variation within G. cancriformis island populations; however, this variation does not reflect genealogical relationships. Rather, isolation by distance and local morphological adaptation may explain the observed variation. © Copyright 2020 Chamberland et al.eng
dc.format.mimetypeapplication/pdf
dc.identifier.doihttps://doi.org/10.7717/peerj.8976
dc.identifier.issn2167-8359
dc.identifier.urihttps://repository.urosario.edu.co/handle/10336/24938
dc.language.isoeng
dc.publisherPeerJ Inc.spa
dc.relation.citationStartPagee8976
dc.relation.citationTitlePeerJ
dc.relation.citationVolumeVol. 8
dc.relation.ispartofPeerJ, ISSN: 2167-8359, Vol.8, No. (2020-04-30); pp. e8976spa
dc.relation.urihttp://dx.doi.org/10.7717/peerj.8976spa
dc.rights.accesRightsinfo:eu-repo/semantics/openAccess
dc.rights.accesoAbierto (Texto Completo)spa
dc.source.instnameinstname:Universidad del Rosariospa
dc.source.reponamereponame:Repositorio Institucional EdocURspa
dc.subject.keywordColor polymorphismspa
dc.subject.keywordGene flowspa
dc.subject.keywordGenetic diversityspa
dc.subject.keywordHaplotype networkspa
dc.subject.keywordIntraspecific relationshipsspa
dc.subject.keywordMorphologyspa
dc.subject.keywordPhylogenyspa
dc.subject.keywordSpecies delimitationspa
dc.titlePhylogeography of the widespread Caribbean spiny orb weaver Gasteracantha cancriformisspa
dc.typearticleeng
dc.type.hasVersioninfo:eu-repo/semantics/publishedVersion
dc.type.spaArtículospa
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