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Univariate and multivariate analyses of shell variables within the genus Cochlicopa (Gastropoda: Pulmonata: Cochlicopidae)
JournalArticle (Originalarbeit in einer wissenschaftlichen Zeitschrift)
 
ID 2257630
Author(s) Armbruster, Georg F. J.
Author(s) at UniBasel Armbruster, Georg
Year 1995
Title Univariate and multivariate analyses of shell variables within the genus Cochlicopa (Gastropoda: Pulmonata: Cochlicopidae)
Journal Journal of Molluscan Studies
Volume 61
Number 2
Pages / Article-Number 225-235
Abstract The following four shell variables were measured on Cochlicopa nitens (n = 150), C. lubricella (n = 205) and ‘C. lubricella’ (n = 545): shell height (‘SH’), shell diameter (‘SD’), diameter of the last whorl (‘DIW’), and diameter of the second last whorl (‘DslW’). As reported in the literature, C. lubrica and C. repentina were assumed to be concho-logically indistinguishable. Therefore, the data pool of ‘C. lubrica’ includes two nominal species. Univariate evaluations allow good separation of ‘C lubrica’ vs. C. nitens (with the variables ‘DslW’ and ‘DIW’), and of ‘C. lubrica’ vs. C. lubricella (with the variables‘SD’ and ‘DIW’). Variable ‘SH’ shows the highest overlap between the threetaxa. For each shell variable thresholds are given for a classification. A very effective tool to separate the groupsis canonical discriminant analysis of the shell variables. Large-shelled forms of C. lubricella should be given more attention. In some cases preliminary notes about important isozymic characters are also given.
Publisher Oxford University Press
ISSN/ISBN 0260-1230 ; 1464-3766
edoc-URL http://edoc.unibas.ch/49648/
Full Text on edoc No
Digital Object Identifier DOI 10.1093/mollus/61.2.225
ISI-Number WOS:A1995RE66400008
Document type (ISI) Article
 
   

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