Literaturdatenbank
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Bujes, C. S., & Verrastro, L. (2007). Supernumerary epidermal shields and carapace variation in orbigny's slider turtles, trachemys dorbigni (testudines, emydidae). Revista Brasileira de Biologia, 24(3), 666–672.
Added by: Admin (14 Aug 2008 20:34:31 UTC) Last edited by: Beate Pfau (01 Jun 2009 13:52:52 UTC) |
| Resource type: Journal Article BibTeX citation key: Bujes2007a View all bibliographic details  |
Categories: General Keywords: Emydidae, Morphologie = morphology, Schildkröten = turtles + tortoises, Trachemys, Trachemys dorbigni Creators: Bujes, Verrastro Collection: Revista Brasileira de Biologia |
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| URLs www.scielo.br/pdf/ ... v24n3/a18v24n3.pdf |
| Abstract |
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The epidermal plates of the carapace and plastron of 51 adults (38 females and 13 males), 07 immature individuals, and 46 hatchlings of the freshwater turtle Trachemys dorbigni (Durémil& Bibron, 1835), originated from the delta of Rio Jacuí region, Rio Grande do Sul state, Brazil, were examined. The results showed that 7.7% of males, 10.52% of females, 14.28% of immature individuals, and 6.52% of the hatchlings presented a kind of anomaly on the shell, as well as a presence of supernumerary epidermal shields. Although the modification in the number of epidermal shields presents a high frequency in Testudines, these are the first descriptions of the variation in the pattern of carapacial scutation in eleven individuals from a population of T. dorbigni. The association of several environmental factors acting on the embryonic development of the individual may be responsible for the alteration of the pattern of carapacial scutation in this species.
Added by: Admin Last edited by: Beate Pfau |
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WIF
Added by: Sarina Wunderlich Last edited by: Beate Pfau |