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The land-snail species of Cochlicopa (Gastropoda: Pulmonata: Cochlicopidae): presentation of taxon-specific allozyme patterns, and evidence for a high level of self-fertilization

Armbruster, Georg F. J. and Schlegel, M.. (1994) The land-snail species of Cochlicopa (Gastropoda: Pulmonata: Cochlicopidae): presentation of taxon-specific allozyme patterns, and evidence for a high level of self-fertilization. Journal of Zoological Systematics and Evolutionary Research, 32 (4). pp. 282-296.

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Official URL: http://edoc.unibas.ch/49647/

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Abstract

Genetic differentiation in the four nominal species C. nitens (Gallenstein, 1848), C. lubricella (Porro, 1838), C. lubrica (O. F. Müller, 1774) and C. repentina Hudec, 1960 was studied by investigating 21 isoenzyme loci. Allozymic markers exist, which clearly separate the first three taxa from each other, including in sympatric areas. By contrast, C. repentina and C. lubrica exhibit almost no isozymic differentiation and therefore, C. repentina should not be considered as a separate species, but as a member of C. lubrica sensu lato. The high frequency of homozygotes within all populations of all species shows that self-fertilization is the main breeding system of Cochlicopa. Genetic relationships between the various populations were inferred with different tree-constructing methods. In all phenograms, populations of C. nitens appear in one distinct cluster, whereas the grouping of C. lubricella changes when different clustering-procedures are used. Therefore, it remains unclear whether the three populations of C. lubricella have a common origin or whether they are polyphyletic with at least two independent ancestors.
Faculties and Departments:05 Faculty of Science > Departement Umweltwissenschaften > Ehemalige Einheiten Umweltwissenschaften > Pflanzenökologie (Körner)
UniBasel Contributors:Armbruster, Georg FJ
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:Wiley
ISSN:0044-3808
e-ISSN:1439-0469
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:22 Nov 2017 11:17
Deposited On:22 Nov 2017 11:17

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