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The land snail genus Acrotoma (Clausiliidae) from the western Greater Caucasus is revised and a molecular phylogenetic analysis of the genus is presented. Shells and, as far as known, genitalia of 13 species are described and figured. Two species are described as new to science, i.e., A. vespa sp. nov. and A. enguriensis sp. nov. The diagnostic characteristics are summarized in a table. All locality records are listed and shown in distribution maps. Based on Bayesian, Maximum likelihood and Maximum parsimony analyses of mitochondrial and nuclear DNA sequences we revise the classification of the genus and suggest a division into three subgenera, Iliamneme, Acrotomina and Acrotoma s. str. The radiation of the Acrotoma species in the Pliocene and Quaternary might have been triggered by the orogenesis of the Greater Caucasus, which created habitats, such as canyons and alpine environments, to which the Acrotoma species adapted.www.zoobank.org/urn:lsid:zoobank.org:pub:6B14BE68-0E07-42EF-B08D-A75B2138B72F 相似文献
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中国管螺属三新种(肺螺亚纲:柄眼目:烟管螺科) 总被引:2,自引:1,他引:1
本文记述烟管螺科、管螺亚科、管螺属三新种:雅安管螺、阳朔管螺和德宝管螺。前一种采自四川省雅安,后两种分别采自广西僮族自治区阳朔县和德宝县境内。 相似文献
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Zoltán Fehér László Németh Alexandru Nicoară Miklós Szekeres 《Zoological Journal of the Linnean Society》2013,167(2):259-272
Whereas the vast majority of gastropods possess dextral shell and body organization, members of the Clausiliidae family are almost exclusively sinistral. Within this group a unique feature of the alpine genus Alopia is the comparable representation of sinistral and dextral taxa, and the existence of enantiomorph taxon pairs that appear to differ only in their chirality. We carried out a molecular phylogenetic study, using mitochondrial cytochrome c oxidase subunit I (COI) gene sequences, in order to find out whether chiral inversions are more frequent in this genus than in other genera of land snails. Our results revealed multiple independent inversions in the evolutionary history of Alopia and a close genetic relationship between members of the enantiomorph pairs. The inferred COI phylogeny also provided valuable clues for the taxonomic division and zoogeographical evaluation of Alopia species. The high number of inverse forms indicates unstable fixation of the coiling direction. This deficiency and the availability of enantiomorph pairs may make Alopia species attractive experimental models for genetic studies aimed at elucidating the molecular basis of chiral stability. © 2013 The Linnean Society of London 相似文献