Literaturdatenbank
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Carter, J., Cline, G., Rayburn, J., & Sauterer, R. (2000). Sexual dimorphism in terrapene carolina and four of its subspecies. Journal of the Alabama Academy of Science, Jan-April.
Added by: Admin (01 Aug 2010 18:21:51 UTC) |
| Resource type: Journal Article BibTeX citation key: Carter2000 View all bibliographic details  |
Categories: General Keywords: Emydidae, Morphologie = morphology, Schildkröten = turtles + tortoises, Systematik = taxonomy, Terrapene, Terrapene carolina Creators: Carter, Cline, Rayburn, Sauterer Collection: Journal of the Alabama Academy of Science |
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| URLs http://findarticle ... pril/ai_n28813011/ |
| Abstract |
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Terrapene carolina, is a terrestrial turtle that displays sexually dimorphic characteristics: Sexual dimorphism in plastron shape (concave in males and convex in females) and eye color during the breeding season (red in males and yellow in females) is well documented. During this study, 13 external morphological characters from nearly 700 individuals representing four subspecies of Terrapene carolina (Terrapene carolina bauri, Terrapene carolina carolina, Terrapene carolina major, and Terrapene carolina triunguis) were measured. Ten measurements were recorded from the carapace and plastron of each turtle. Three measurements were derived from the data (relative carapace height (RCH), relative carapace width (RCW), and relative plastron width (RPW)). Each measures the posterior portion of the shell relative to the anterior portion. In general, males were longer and wider than females, while females were taller than males based on absolute measures. The RCH value averaged -3.21 for females and -2.30 for males, thus females were relatively taller posteriorly than males, but males were relatively wider posteriorly than females (RCW). These data are also compared by sexes among the sub-species. Possible evolutionary implications are discussed.
Added by: Admin |