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


Pérez-Portela, Rocío, Arranz, Vanessa, Rius, Marc and Turon, Xavier (2013) Cryptic speciation or global spread? The case of a cosmopolitan marine invertebrate with limited dispersal capabilities Scientific Reports, 3, pp. 1-10. (doi:10.1038/srep03197).

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Description/Abstract

The 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.

Item Type: Article
Digital Object Identifier (DOI): doi:10.1038/srep03197
Keywords: invasive species, molecular ecology
Subjects: G Geography. Anthropology. Recreation > GC Oceanography
Q Science > QH Natural history > QH301 Biology
Organisations: Ocean and Earth Science
ePrint ID: 359509
Date :
Date Event
12 November 2013Published
Date Deposited: 01 Nov 2013 16:15
Last Modified: 17 Apr 2017 14:41
Further Information:Google Scholar
URI: http://eprints.soton.ac.uk/id/eprint/359509

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