Literaturdatenbank
Literaturdatenbank |
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Burger, J. P. (1976). Temperature relationships in nests of the northern diamondback terrapin, malaclemys terrapin terrapin. Herpetologica, 32(4), 412–418.
Added by: Admin (25 Aug 2008 21:57:59 UTC) |
| Resource type: Journal Article BibTeX citation key: Burger1976a View all bibliographic details  |
Categories: General Keywords: Emydidae, Fortpflanzung = reproduction, Habitat = habitat, Malaclemys, Malaclemys terrapin, Nordamerika = North America, Schildkröten = turtles + tortoises, Zeitigung = incubation Creators: Burger Collection: Herpetologica |
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| Abstract |
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Malaclemys terrapin Aspects of temperature relationships in nests of the northern diamondback terrapin were examined in New Jersey . Nest temperatures had a diel variation from 2-9.degree. C with a daily low at 0600h and a high at 1500 h. Nest temperatures lagged behind sand surface temperatures. Prolonged periods of rain depressed surface temperatures and lowered nest temperatures to the daily low. Two nests on north-facing slopes had a mean daily temperature for the 70 days of development of .apprxeq. 1.degree. C lower than 2 nests on south-facing slopes. Ten nests on south-facing slopes hatched in an average of 71 days vs. a mean of 79 days for 10 nests on north-facing slopes and the sand at the same depth was 2-12.degree. C/day. Depth of nests influenced nest temperatures and developmental period of the eggs. Nest depth and developmental period for eggs were positively correlated. Eggs failed to develop in very shallow nests. Because monthly temperatures differ, nests initiated in June hatched in less time (74 days) than nests initiated in July (86 days).
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