Literaturdatenbank
Literaturdatenbank |
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Lovich, J. E., & Ernst, C. H. (1989). Variation in the plastral formulae of selected turtles with comments on taxonomic utility. Copeia, 1989(2), 304–318.
Added by: Sarina Wunderlich (13 Oct 2008 21:32:43 UTC) Last edited by: Beate Pfau (31 May 2009 07:47:55 UTC) |
| Resource type: Journal Article BibTeX citation key: Lovich1989a View all bibliographic details  |
Categories: General Keywords: Chelidae, Emydidae, Geoemydidae, Graptemys, Graptemys pulchra, Mauremys, Mauremys reevesii, Platemys, Platemys platycephala, Schildkröten = turtles + tortoises, Systematik = taxonomy Creators: Ernst, Lovich Collection: Copeia |
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| Abstract |
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The relative ranking of midseam scute lengths on the plastron to form a "plastral formula" has often been used by turtle taxonomists to characterize species. However, the results of this study demonstrate that a given species may be represented by as many as 35 plastral formulae. In addition, the relative frequency of these formulae may differ dramatically among sexes and size classes. Some variation may also be due to sampling techniques, or genetic and environmental factors. Preliminary results suggest that distantly related taxa may not share any plastral formulae, while closely related forms may exhibit a high degree of overlap.
Added by: Sarina Wunderlich Last edited by: Beate Pfau |