The Hyalella (Crustacea: Amphipoda) species cloud of the ancient Lake Titicac Originated from multiple colonizations

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dc.contributor.authorAdamowizc, Sarah J.
dc.contributor.authorMarinone, María Cristina
dc.contributor.authorMenu Marque, Silvina
dc.contributor.authorMartín, Jeffrey W.
dc.contributor.authorAllen, Daniel C.
dc.contributor.authorPyle, Michelle N.
dc.contributor.authorDe Los Ríos Escalante, Patricio
dc.contributor.authorSobel, Crystal N.
dc.contributor.authorIbañez, Carla
dc.contributor.authorPinto, Julio
dc.contributor.authorWitt, Jonathan D.S.
dc.date2018
dc.date.accessioned2020-07-22T15:26:27Z
dc.date.available2020-07-22T15:26:27Z
dc.description.abstractAncient lakes are renowned for their exceptional diversity of endemic species. As model systems for the study of sympatric speciation, it is necessary to understand whether a given hypothesized species flock is of monophyletic or polyphyletic origin. Here, we present the first molecular characterization of the Hyalella (Crustacea: Amphipoda) species complex of Lake Titicaca, using COI and 28S DNA sequences, including samples from the connected Small and Large Lakes that comprise Lake Titicaca as well as from a broader survey of southern South American sites. At least five evolutionarily distant lineages are present within Lake Titicaca, which were estimated to have diverged from one another 12–20 MYA. These major lineages are dispersed throughout the broader South American Hyalella phylogeny, with each lineage representing at least one independent colonization of the lake. Moreover, complex genetic relationships are revealed between Lake Titicaca individuals and those from surrounding water bodies, which may be explained by repeated dispersal into and out of the lake, combined with parallel intralacustrine diversification within two separate clades. Although further work in deeper waters will be required to determine the number of species present and modes of diversification, our results strongly indicate that this amphipod species cloud is polyphyletic with a complex geographic historyen_US
dc.formatPDFen_US
dc.identifier.citationMolecular Phylogenetics and Evolution, Vol.125, 232-242en_US
dc.identifier.doi10.1016/j.ympev.2018.03.004en_US
dc.identifier.urihttp://repositoriodigital.uct.cl/handle/10925/2273
dc.language.isoenen_US
dc.rightsObra bajo licencia Creative Commons 3.0en_US
dc.sourceMolecular Phylogenetics and Evolution, Vol.125, 232-242, 2018en_US
dc.subjectRadiación evolutivaen_US
dc.subjectLago Titicacaen_US
dc.subjectRebaños de especiesen_US
dc.subjectEspeciación simpáticaen_US
dc.subjectAmphipodaen_US
dc.titleThe Hyalella (Crustacea: Amphipoda) species cloud of the ancient Lake Titicac Originated from multiple colonizationsen_US
dc.typeArtículo de Revistaen_US
uct.catalogadormlmen_US
uct.comunidadRecursos Naturalesen_US
uct.disciplinaBiología Marinaen_US
uct.indizacionSCOPUSen_US
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