Literaturdatenbank
Literaturdatenbank |
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Batistella, A. M., & Vogt, R. C. (2008). Nesting ecology of podocnemis erythrocephala (testudines, podocnemididae) of the rio negro, amazonas, brazil. Chelonian Conservation and Biology, 7(1), 12–20.
Added by: Sarina Wunderlich (27 Apr 2009 14:58:43 UTC) |
| Resource type: Journal Article DOI: 10.2744/CCB-0611.1 BibTeX citation key: Batistella2008 View all bibliographic details  |
Categories: General Keywords: Fortpflanzung = reproduction, Fressfeinde = predators, Podocnemididae, Podocnemis, Podocnemis erythrocephala, Schildkröten = turtles + tortoises, Südamerika = South America Creators: Batistella, Vogt Collection: Chelonian Conservation and Biology |
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| Abstract |
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We studied reproductive ecology and egg survivorship of Podocnemis erythrocephala (Spix 1824) in 4 campina habitats on the Ayuanã River, Santa Isabel do Rio Negro, Amazonas, Brazil. There were 2 nesting periods, the first in early October and the other in the beginning of December, separated by a period of flash floods. A total of 117 nests were recorded, with a nest density of 19.9 nests/ha, a mean clutch size of 8.7 eggs, and a mean egg volume of 14 cm3. Females chose to nest in the most open sites, with plant cover of up to 50%. Nest loss reached 100% for the season: 70% was from flash floods, 12% was from predation by the weasel Eira barbara (Mustelidae), 9% was by the lizard Ameiva ameiva (Teiidae), 5% by humans, 2% by Crocodilurus lacertinus (Teiidae), and 1% by Daptrius ater (Falconidae). Keywords: Reptilia, Testudines, Podocnemididae, Podocnemis erythrocephala, turtle, nesting ecology, predation, Amazônia, Rio Negro, Brazil Added by: Sarina Wunderlich |
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Added by: Sarina Wunderlich |