Results 111 to 120 of about 286 (141)
Geological control of Podocnemis expansa and Podocnemis unifilis nesting areas in Rio Javaés, Bananal Island, Brazil [PDF]
Acta Amazonica, 2003 The distribution of the nests of Podocnemis expansa (Amazon turtle) and Podocnemis unifilis (yellow-spotted side neck turtle) along the point bars of the Javaés River in Bananal Island, demonstrates a clear preference of these chelonians for differentiated geological environments, in respect to the morphology, grain size or height of the nests in ...
Paulo Dias Ferreira Junior +1 more
exaly +5 more sources
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Chelonian Conservation and Biology, 2006
ABSTRACT Subsurface temperature variation suggests that the thermal environment of giant Amazon river turtle (Podocnemis expansa) nests is influenced by the proximity of the water table and by the nest depth. The difference between vertical temperature gradients along fluvial beaches indicates that nest placement can exert a significant influence on ...
Paulo Dias Ferreira Junior +1 more
exaly +2 more sources
ABSTRACT Subsurface temperature variation suggests that the thermal environment of giant Amazon river turtle (Podocnemis expansa) nests is influenced by the proximity of the water table and by the nest depth. The difference between vertical temperature gradients along fluvial beaches indicates that nest placement can exert a significant influence on ...
Paulo Dias Ferreira Junior +1 more
exaly +2 more sources
Nesting of Podocnemis unifilis in the Capanaparo River, Venezuela
Journal of Herpetology, 1993(Pritchard and Trebbau, 1984). Although still abundant in many lowland riverine habitats in Venezuela, including the Capanaparo River, numbers appear to be declining because the terecay is a principal human food staple during the dry season, with both eggs and turtles being consumed or sold in large quantities throughout the species range (Mittermeier,
John B Thorbjarnarson, Tibisay Escalona
exaly +2 more sources
Journal of Zoo and Wildlife Medicine, 2010
Fertile eggs of Podocnemis expansa and Podocnemis unifilis were investigated for the presence of enterobacteria, as these two endangered species have the potential for conservation measures that include egg transfer. Knowledge of normal microflora associated with turtles and turtle eggs would help effectively manage the transfer of these eggs among ...
Paula B Morais +2 more
exaly +3 more sources
Fertile eggs of Podocnemis expansa and Podocnemis unifilis were investigated for the presence of enterobacteria, as these two endangered species have the potential for conservation measures that include egg transfer. Knowledge of normal microflora associated with turtles and turtle eggs would help effectively manage the transfer of these eggs among ...
Paula B Morais +2 more
exaly +3 more sources
Avaliação da predação de Podocnemis expansa e Podocnemis unifilis (Testudines, Podocnemididae) no rio Javaés, Tocantins [PDF]
Acta Amazonica, 2009 Podocnemis expansa e P. unifilis são animais de vida longa, com uma demorada maturação sexual, o que influencia uma baixa taxa de substituição de indivíduos. Suas populações são caracterizadas por uma pequena mortalidade dos animais adultos, mas alta taxa de mortalidade de filhotes e embriões.
Adriana Malvasio
exaly +5 more sources
South American Journal of Herpetology, 2007
Abstract This work analyses the influence that nest site characteristics have over natural incubation in freshwater turtles Podocnemis expansa and Podocnemis unifilis. Results indicate that neither carapace size nor weight of P. expansa hatchlings depends on environmental characteristics.
Darlan Tavares Feitosa +2 more
exaly +2 more sources
Abstract This work analyses the influence that nest site characteristics have over natural incubation in freshwater turtles Podocnemis expansa and Podocnemis unifilis. Results indicate that neither carapace size nor weight of P. expansa hatchlings depends on environmental characteristics.
Darlan Tavares Feitosa +2 more
exaly +2 more sources
Avaliação de padrão irregular dos escudos do casco em Podocnemis expansa e Podocnemis unifilis (Testudines, Podocnemididae) [PDF]
Acta Amazonica, 2009 O casco de Podocnemis expansa (tartaruga-da-amazônia) e Podocnemis unifilis (tracajá), os maiores quelônios de água doce da América do Sul, é uma estrutura única que diferencia esse grupo dos vertebrados atuais e está associado a alguns padrões comportamentais. O padrão dos escudos que compõem o casco dos quelônios é bastante uniforme, mas variações já
Adriana Malvasio
exaly +5 more sources
Chelonian Conservation and Biology, 2007
ABSTRACT Podocnemis unifilis and P. expansa abundance was compared at 3 sites in eastern lowland Bolivia in 2000. Two of the sites were adjacent to human communities while the third was not. The comparison was made to examine effects of hunting pressure on turtle abundance.
Kristen Conway-Gómez
exaly +2 more sources
ABSTRACT Podocnemis unifilis and P. expansa abundance was compared at 3 sites in eastern lowland Bolivia in 2000. Two of the sites were adjacent to human communities while the third was not. The comparison was made to examine effects of hunting pressure on turtle abundance.
Kristen Conway-Gómez
exaly +2 more sources
Mitochondrial DNA Part A, 2014
The mitochondrial genome of Podocnemis unifilis (Pleurodira: Podocnemididae) is 16,493 bp in length, which contains 13 protein-coding genes, 2 ribosomal RNAs, 22 transfer RNAs, and a control region. The A+T content of the overall base composition of H-strand is 61.7% (T: 27.7%, C: 25.5%, A: 34.0%, G: 12.8%). ATP6, ATP8, CO3, ND4-6 and Cyt b genes begin
Xuming, Zhou +3 more
openaire +2 more sources
The mitochondrial genome of Podocnemis unifilis (Pleurodira: Podocnemididae) is 16,493 bp in length, which contains 13 protein-coding genes, 2 ribosomal RNAs, 22 transfer RNAs, and a control region. The A+T content of the overall base composition of H-strand is 61.7% (T: 27.7%, C: 25.5%, A: 34.0%, G: 12.8%). ATP6, ATP8, CO3, ND4-6 and Cyt b genes begin
Xuming, Zhou +3 more
openaire +2 more sources
Parasitology Research, 2014
The study objectives were to characterize the morphology of the parasitic forms and describe the prevalence and intensity of Haemogregarina spp. in a population of the turtle Podocnemis unifilis as well as to examine the relationships between parasitism and turtle variables such as gender, size, and weight.
Soares, Priscilla +4 more
openaire +3 more sources
The study objectives were to characterize the morphology of the parasitic forms and describe the prevalence and intensity of Haemogregarina spp. in a population of the turtle Podocnemis unifilis as well as to examine the relationships between parasitism and turtle variables such as gender, size, and weight.
Soares, Priscilla +4 more
openaire +3 more sources