Please use this identifier to cite or link to this item: http://hdl.handle.net/1822/49180

TitleLow genetic diversity and high invasion success of Corbicula fluminea (Bivalvia, Corbiculidae) (Müller, 1774) in Portugal
Author(s)Gomes, Cidália
Sousa, Ronaldo Gomes
Mendes, Tito
Borges, Rui
Vilares, Pedro
Vasconcelos, Vitor
Guilhermino, Lúcia
Antunes, Agostinho
KeywordsAnimals
Corbicula
DNA, Mitochondrial
DNA, Ribosomal
Ecosystem
Female
Fresh Water
Genetic Markers
Geography
Haplotypes
Introduced Species
Male
Phylogeny
Polymerase Chain Reaction
Portugal
Spermatozoa
Genetic Variation
Genetics, Population
Issue date2016
PublisherPublic Library of Science (PLOS)
JournalPLoS ONE
Abstract(s)The Asian clam, Corbicula fluminea, is an invasive alien species (IAS) originally from Asia that has spread worldwide causing major ecological and economic impacts in aquatic ecosystems. Here, we evaluated C. fluminea genetic (using COI mtDNA, CYTb mtDNA and 18S rDNA gene markers), morphometric and sperm morphology variation in Portuguese freshwater ecosystems. The COI marker revealed a single haplotype, which belongs to the Asian FW5 invasive lineage, suggesting a common origin for all the 13 Portuguese C. fluminea populations analysed. Morphometric analyses showed differences between the populations colonizing the North (with the exception of the Lima River) and the Centre/South ecosystems. The sperm morphology examination revealed the presence of biflagellate sperm, a distinctive character of the invasive androgenetic lineages. The low genetic variability of the Portuguese C. fluminea populations and the pattern of sperm morphology have been illuminating for understanding the demographic history of this invasive species. We hypothesize that these populations were derived from a unique introductory event of a Corbicula fluminea FW5 invasive androgenic lineage in the Tejo River, which subsequently dispersed to other Portuguese freshwater ecosystems. The C. fluminea asexual reproductive mode may have assisted these populations to become highly invasive despite the low genetic diversity.
TypeArticle
URIhttp://hdl.handle.net/1822/49180
DOI10.1371/journal.pone.0158108
ISSN1932-6203
e-ISSN1932-6203
Peer-Reviewedyes
AccessRestricted access (UMinho)
Appears in Collections:DBio - Artigos/Papers

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