Literaturdatenbank
Literaturdatenbank |
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Keller, C., Diaz-Paniagua, C., & Andreu, A. C. (1998). Survival rate and causes of mortality of testudo graeca hatchlings in southwestern spain. Journal of Herpetology, 32, 238–243.
Added by: Admin (17 Aug 2008 18:54:50 UTC) |
| Resource type: Journal Article BibTeX citation key: Keller1998b View all bibliographic details  |
Categories: General Keywords: Fressfeinde = predators, Habitat = habitat, Schildkröten = turtles + tortoises, Südwesteuropa = South-Western Europe, Testudinidae, Testudo, Testudo graeca Creators: Andreu, Diaz-Paniagua, Keller Collection: Journal of Herpetology |
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| Abstract |
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Testudinidae We assessed mortality causes and survival rates for 59 free ranging Testudo graeca hatchlings.Individuals were followed for varying lengths of time from emergence from the nest in August-September to April using thread-trailing. Hatchlings died from unknown causes, mainly soon after emergence a belonged mainly to clutches which contained also unhatched eggs. Other causes of mortality were predation car traficc, and trampling by large ungulates during the activity season (autumn and spring). Predation was low, and available data on potential predator diets also indicate low predation upon hatchlings. We found seasonal differences in survival; highest survival was winter and lowest in spring. The overall survival rate for the 8 mo period was 0.39. Mortality causes registered during continuous monitoring were similary to anecdotal observations recorded over an 11 yr period.
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