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After you log in your content will be available in your library. On growth and morphometrics of leopard tortoises, Geochelone pardalis , in Serengeti National Park, Tanzania, with observations on effects of bushfires and latitudinal variation in populations of eastern Africa. Larger plastrons afford greater protection to individuals, reducing exposure of limbs, though this trait also decreases mobility Zuffi and Plaitano, The consistency of parameters between sexes in the two species was observed using Wilks lambda. The greater AX-IN in females affords more protection, in spite of the lower mobility caused by the lesser room available for limb movements.

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Wildlife Research Report, no. Sexual dimorphism and morphological differentiation in European pond turtle Emys orbicularis populations from Northwesrn Spain. The Quarterly Review of Biologyvol. Sexual dimorphism in steppe tortoise Testudo horsfieldi: Individuals were classified into the groups, so as to estimate the discriminant function and insert each individual into the group whose centroid was the closest to the value observed.

Nevertheless, the distinctions in these species' skeletons and shapes of shells have been associated to different catuvos to bury themselves in the ground Morafka, Sexual dimorphism of body size and shell shape in European tortoises. The greater AX-IN in females affords more protection, in spite of the lower mobility caused by the lesser room available for limb movements. The measurements of anal scutes ASL and Cb were also significantly different in males as compared to females, in both species.

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Males have larger and longer heads as compared to females, a common characteristic in male tortoises, for which courtship combats are frequent. These species are considered mid-sized, with a mean straight carapace length in C.

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Are tortoises important seed dispersers in Amazonian forests? Chelonian Conservation and Biologyvol. Sexual dimorphism in steppe tortoises: This study analyses the morphological variations in the shell of C.

Activity levels and ranging behaviour of the two cativod tortoises, Geochelone carbonaria and Geochelone denticulatain North-Western Brazil.

Reproduction in the slider and other species of turtles. Turtles of the World.

The American Midland Naturalistvol. Our data catibos that other measures of the plastron, when considered together, are more reliable in differentiating C. We determined the sex of individuals based on plastron hollow, anal scute gap, tail shape and reproductive behavior copula and nest digging Pritchard and Trebbau, In order to minimize the effects associated with sexual dimorphism, males and females were analyzed separately.

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Functional Ecologyvol. How to cite this article.

Additionally, the availability of food resources and even reproductive behaviors also seem to influence morphology Morafka, ; Germano, ; Willemsen and Hailey, Starting your free trial of Bible Gateway Plus is easy. Tortuga Gazettevol.

A abertura no casco de C. Services on Demand Journal. In the Peruvian Amazon, C.

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Sex and species discrimination in two sympatric South American tortoises. An elongated and angular front shell in C.

Further research on the way these species move may shed new light on whether these differences observed in shell openings are associated to the search for food resources and mating partners, or a response to different predators. Yet, this characteristic reduces shell opening, lessening the possibilities of variation in form. The authors also draw attention to the difficulties inherent to working with species that may present low population density and that take cryptic habits.