Literaturdatenbank
Literaturdatenbank |
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Lovich, J. E., Ernst, C. H., & McBreen, J. F. (1990). Growth, maturity and sexual dimorphism in the wood turtle, clemmys insculpta. Canadian Journal of Zoology, 68(4), 672–677.
Added by: Sarina Wunderlich (13 Oct 2008 21:32:44 UTC) Last edited by: Beate Pfau (07 Feb 2009 07:10:55 UTC) |
| Resource type: Journal Article BibTeX citation key: Lovich1990c View all bibliographic details  |
Categories: General Keywords: Clemmys, Emydidae, Glyptemys, Glyptemys insculpta, Habitat = habitat, Morphologie = morphology, Nordamerika = North America, Schildkröten = turtles + tortoises Creators: Ernst, Lovich, McBreen Collection: Canadian Journal of Zoology |
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| Abstract |
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Abstract: Growth in the wood turtle (Clemmys insculpta) is described using the von Bertalanffy growth model and nonlinear regression. Growth in both sexes is similar until about 160 mm plastron length. Males grew at a faster rate after this size. Males appear to mature at a larger size and later age than females, although age-specific body size is highly variable. Sexual size dimorphism, in carapace length, is pronounced, with males attaining mean body sizes significantly larger (1.07–1.10 times) than those of adult females. Plastron length is an inappropriate measure of sexual size dimorphism because of the development of plastral concavity in males. Females tend to predominate in samples, possibly owing to differential maturity of the sexes. The direction of sexual size dimorphism may be maintained by intrasexual competition among males for access to females. Data for several adults captured at intervals of from 9 to 20 years support the concept of indeterminate growth.
Added by: Sarina Wunderlich Last edited by: Beate Pfau |