Literaturdatenbank
Literaturdatenbank |
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Buhlmann, K. A., Lynch, T. K., Gibbons, J. W., & Greene, J. L. (1995). Prolonged egg retention in the turtle deirochelys reticularia in south carolina. Herpetologica, 51(4), 457–462.
Added by: Admin (23 Aug 2008 12:13:04 UTC) Last edited by: Beate Pfau (01 Jan 2009 07:49:26 UTC) |
| Resource type: Journal Article BibTeX citation key: Buhlmann1995b View all bibliographic details  |
Categories: General Keywords: Deirochelys, Deirochelys reticularia, Diapause = diapause, Emydidae, Fortpflanzung = reproduction, Habitat = habitat, Kinosternidae, Kinosternon, Kinosternon subrubrum, Nordamerika = North America, Schildkröten = turtles + tortoises, Trachemys, Trachemys scripta Creators: Buhlmann, Gibbons, Greene, Lynch Collection: Herpetologica |
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| Abstract |
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Deirochelys reticularia Trachemys scripta Kinosternon subrubrum Deirochelys reticularia possesses a reproductive strategy unique among North American turtles by exhibiting a bimodal autumn and spring nesting pattern in the northern part of its range. Between 1976-1994, 153 X-radiographs were taken of 50 females of Deirochelys reticularia to detect the presence of calcified eggs. Thirteen gravid females were X-radiographed in both autumn and the following spring. Of these, eight retained the same set of calcified eggs and five contained a different clutch. We did not observe spring to autumn retention of eggs. Analysis of X-radiographs from Kinosternon subrubrum and Trachemys scripta indicated much shorter retention times that spanned a few weeks at most within a summer nesting season. Egg retention may represent an adaptation specific to Deirochelys that enables postponement of nesting if conditions are unsuitable.
Added by: Admin Last edited by: Beate Pfau |