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Correspondence analysis of shell morphology in the African freshwater snail Biomphalaria pfeifferi (Kraus 1848) (Pulmonata: Gastropoda) |
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| Authors: | JACQUES DUPOUY DIDIER ROUSSEAU GEORGES DUSSART F.L.S. MARC VIANEY LIAUD HENRI NASSI |
| Affiliation: | Universitéde Perpignan, 52 Ave. de Villeneuve, 66860 Perpignan, France;Universitéde Montpellier II, Place E. Bataillon, 34060 Montpellier, France;Christ Church College, North Holmes Road, Canterbury, Kent CT11QJJ, UK;Universitéde Montpellier II, Place E. Bataillon, 34060 Montpellier, France;Universitéde Perpignan, 52 Ave. de Villeneuve, 66860 Perpignan, France |
| Abstract: | A correspondence analysis of shell measurements taken from 521 widely dispersed specimens of the African aquatic pulmonate snail Biomphalaria pfeifferi suggests the existence of eight morphological groups. These groups appear to relate to either ecophysiological factors or to factors associated with the stability of the freshwater system rather than to aspects of geographic distribution and genetic isolation. |
| Keywords: | Morphometry Africa climatic cline |