DNA barcodes and phylogenetic affinities of the terrestrial slugs Arion gilvus and A. ponsi (Gastropoda, Pulmonata, Arionidae)
Breugelmans, Karin (Institut royal des sciences naturelles de Belgique)
Jordaens, Kurt (University of Antwerp (Bèlgica). Evolutionary Ecology Group)
Adriaens, Els (University of Ghent. Laboratory of Pharmaceutical Technology)
Remon, Jean Paul (University of Ghent. Laboratory of Pharmaceutical Technology)
Quintana Cardona, Josep (Institut Català de Paleontologia Miquel Crusafont)
Backeljau, Thierry (Institut royal des sciences naturelles de Belgique)

Data:	2013
Resum:	The Iberian Peninsula is a region with a high endemicity of species of the terrestrial slug subgenus Mesarion. Many of these species have been described mainly on subtle differences in their proximal genitalia. It therefore remains to be investigated 1) whether these locally diverged taxa also represent different species under a phylogenetic species concept as has been shown for other Mesarion species outside the Iberian Peninsula, and 2) how these taxa are phylogenetically related. Here, we analysed DNA sequence data of two mitochondrial (COI and 16S) genes, and of the nuclear ITS1 region, to explore the phylogenetic affinities of two of these endemic taxa, viz. Arion gilvus Torres Mínguez, 1925 and A. ponsi Quintana Cardona, 2007. We also evaluated the use of these DNA sequence data as DNA barcodes for both species. Our results showed that ITS did not allow to differentiate among most of the Mesarion molecular operational taxonomic units (MOTUs) / morphospecies in Mesarion. Yet, the overall mean p-distance among the Mesarion MOTUs / morphospecies for both mtDNA fragments (16. 7% for COI, 13% for 16S) was comparable to that between A. ponsi and its closest relative A. molinae (COI: 14. 2%; 16S: 16. 2%) and to that between A. gilvus and its closest relative A. urbiae (COI: 14. 4%; 16S: 13. 4%). Hence, with respect to mtDNA divergence, both A. ponsi and A. gilvus, behave as other Mesarion species or putative species-level MOTUs and thus are confirmed as distinct 'species'.
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Llengua:	Anglès
Document:	Article ; recerca ; Versió publicada
Matèria:	DNA barcoding ; Terrestrial slugs ; Gastropoda ; Taxonomy ; Iberian Peninsula ; Arion ponsi ; Arion gilvus
Publicat a:	ZooKeys, 365 (2013) , p. 83-104, ISSN 1313-2970

DOI: 10.3897/zookeys.365.6104
PMID: 24453553

22 p, 1.2 MB

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