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Title

Cryptic speciation or global spread? The case of a cosmopolitan marine invertebrate with limited dispersal capabilities

AuthorsPérez-Portela, R. ; Arranz, V.; Rius, Marc ; Turon, Xavier
Issue Date12-Nov-2013
PublisherNature Publishing Group
CitationScientific Reports 3 : 3197 doi: 10.1038/srep03197 (2013)
AbstractThe existence of globally-distributed species with low dispersal capabilities is a paradox that has been explained as a result of human-mediated transport and by hidden diversity in the form of unrecognized cryptic species. Both factors are not mutually exclusive, but relatively few studies have demonstrated the presence of both. Here we analyse the genetic patterns of the colonial ascidian Diplosoma listerianum, a species nowadays distributed globally. The study of a fragment of a mitochondrial gene in localities worldwide revealed the existence of multiple cryptic species. In addition, we found a complex geographic structure and multiple clades occurred in sympatry. One of the species showed strong population structure irrespective of geographical distances, which is coherent with stochastic dispersal linked to human transport. The present study shows the complexity of discerning the role of cryptic diversity from human-driven range shifts worldwide, as well as disentangling the effects of natural and artificial dispersal.
Description10 páginas, 4 tablas, 4 figuras
Publisher version (URL)http://dx.doi.org/10.1038/srep03197
URIhttp://hdl.handle.net/10261/86535
DOI10.1038/srep03197
ISSN2045-2322
E-ISSN2045-2322
Appears in Collections:(CEAB) Artículos
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