Literaturdatenbank
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Moretti, R., & Rodrigues, M. T. (2003). Reproductive biology of podocnemis erythrocephala (spix, 1824) and p. expansa (schweigger, 1812). Abstracts ASIH Meeting 2003.
Added by: Admin (14 Aug 2008 20:36:25 UTC) |
| Resource type: Journal Article BibTeX citation key: Moretti2003 View all bibliographic details  |
Categories: General Keywords: Fortpflanzung = reproduction, Habitat = habitat, Podocnemididae, Podocnemis, Podocnemis erythrocephala, Podocnemis expansa, Schildkröten = turtles + tortoises, Südamerika = South America Creators: Moretti, Rodrigues Collection: Abstracts ASIH Meeting 2003 |
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| Abstract |
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Freshwater turtles, especially species of the genus Podocnemis (Podocnemididae), are an important source of protein to human populations of the Amazon region. Predatory action inflicted by these local communities may cause decline in populations of podocnemidid turtles. The natural history of these animals is poorly known, even though this knowledge is of crucial importance to establish programs aiming conservation and management of these turtles. For the present work, two species of Podocnemis were investigated, each one from a different locality in the northwestern region of Pará state, Brazil: P. expansa was studied at Reserva Biológica do Rio Trombetas, Oriximiná, from October to December, 2001; P. erythrocephala at Comunidade do Alema, Terra Santa, from August to December, 2002. Biometrical measurements were obtained for 5 females of P. expansa and their respective eggs and hatchlings. For P. erythrocephala, no adult female was observed nesting, but eggs and hatchlings of 5 clutches were measured. Different parameters were investigated for each stage of development: width, length and weight for the eggs; weight, body height, carapace and plastron width and length, head width and tail length for hatchlings and adult females. These data provide information on intraspecific relation between clutch size and egg size, egg mass and hatching period, egg mass and hatchling mass, female size and clutch size.
Added by: Admin |