Literaturdatenbank
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Fattizzo, T. (2004). Basic morphological data and notes on natural history and conservation of a population of emys orbicularis in southern apulia (carovigno, salento). Italian Journal of Zoology, 71(3 S2), 191–193.
Added by: Admin (15 Mar 2009 13:31:31 UTC) |
| Resource type: Journal Article BibTeX citation key: Fatizzo2004 View all bibliographic details  |
Categories: General Keywords: Emydidae, Emys, Emys orbicularis, Habitat = habitat, Schildkröten = turtles + tortoises, Südeuropa = Southern Europe Creators: Fattizzo Collection: Italian Journal of Zoology |
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| Abstract |
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Abstract A population of Emys orbicularis hellenica (Valenciennes, 1832) from the coastal pond of Pantanagianni was studied for two years using capture-mark recapture methods; 57.1% of specimens were females, 32.1% males, and 10.8% immature. For every specimen captured, a series of biometric parameters were applied and information relating to phenotypic characteristics was gathered. The statistically analysed data, from twenty-five sexually mature animals, clearly showed evident sexual dimorphism, with lighter males having narrower shells than those of females. Often, the average values of the parameters analysed were lower than those of other southern populations, while the females had with absolute values higher than those of males. The arrangement of the yellow marks on the shells proved to be a visible characteristic made up of yellow spots in the males and of thin lines on dark ground in the females. In both sexes, the plastron appeared mostly yellowish with the presence of larger dark specks in the males. A diffused yellow spotted carapace was often the prevailing colour of the head and the neck, with a yellowish or light brown ground in the males and darker or blackish one in the females. Yellow marks were present on the front legs and on the back of the tail which are larger then in males. The colour of the iris was often yellow or yellowish with some brown spots. Population size, sex-ratio and feeding habits were studied.
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