Literaturdatenbank
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Du, W.-G., & Zheng, R. (2004). Egg survival and hatchling traits of the chinese three-keeled pond turtle,chinemys reevesii, incubated in different hydric environments. Acta Zoologica Sinica, 50(1), 133–136.
Added by: Admin (14 Aug 2008 20:38:45 UTC) |
| Resource type: Journal Article BibTeX citation key: Du2004 View all bibliographic details  |
Categories: General Keywords: Geoemydidae, Mauremys, Mauremys reevesii, Schildkröten = turtles + tortoises, Zeitigung = incubation Creators: Du, Zheng Collection: Acta Zoologica Sinica |
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| Abstract |
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A total of 51 Chinese three-keeled pond turtle, Chinemys reevesii, eggs were incubated on wet and dry substrates (water potentials of －12 kPa and －300 kPa, respectively) at 30 °C to assess the influence of the hydric environments on egg survival and hatchling traits. Eggs incubated in the dry condition lost weight, whereas those incubated in the wet condition did not. The hydric environments did not affect incubation lengths (60.3 VS 60.7 days) as well as hatching successes (69.2% VS 88.0%). Except for wet body mass and carapace width, which were larger for hatchlings from the －12 kPa treatment than from the -300 kPa treatment, the hydric environments did not affect most hatchling traits. These unaffected traits included dry body mass, carapace length, tail length, limb length, hatchling components (carcass, residual yolk and fat bodies), swimming performance and critical thermal minimum. In conclusion, within the water potential of －12 - －300 kPa, hydric environments have little effect on embryonic development and hatchling traits in Chinese three-keeled pond turtles .
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