Results 91 to 100 of about 663 (179)

Prevalence and parasitemia of Haemogregarina sp. in Podocnemis expansa (Testudines: Podocnemididae) from the Brazilian Amazon

Revista Brasileira de Parasitologia Veterinária
Seventy-five turtles Podocnemis expansa in the Brazilian Amazon were examined for the presence of ectoparasites and hemoparasites. Samplings were performed in three study areas in the state of Tocantins, Brazil.
Amanda Maria Picelli, Aluísio Vasconcelos de Carvalho, Lúcio André Viana, Adriana Malvasio   +3 more
doaj   +1 more source

Podocnemis expansa Turtles Hint to a Unifying Explanation for the Evolution of Temperature-Dependent Sex Determination in Long-Lived and Short-Lived Vertebrates

, 2021
The adaptive significance of temperature-dependent sex determination (TSD) remains elusive for many long-lived reptiles. Various hypotheses proposed potential ecological drivers of TSD.
Valenzuela, Nicole
core   +1 more source

Morfometria e histologia das gônadas de machos e fêmeas recém-eclodidos de Podocnemis expansa e Podocnemis unifilis (Testudines, Podocnemididae)=Morphometry and histology of the gonads of males and females hatchlings of Podocnemis expansa and Podocnemis. unifilis (Testudines, Podocnemididae)

Acta Scientiarum: Biological Sciences, 2012
Considerando a importância da técnica histológica na sexagem de quelônios e os poucos trabalhos direcionados para esta técnica, é proposto neste estudo caracterizar morfometricamente e histologicamente as gônadas de P. expansa e P. unifilis. Todos os espécimes utilizados neste trabalho foram procedentes do rio Javaés, entorno do Parque Nacional do ...
Adson Gomes de Ataídes, Helcileia Dias Santos, Josefa Moreira do Nascimento-Rocha, Adriana Malvasio, Thiago Costa Gonçalves Portelinha   +4 more
openaire   +1 more source

Padronização de protocolo de extração de DNA genômico de Podocnemis expansa e testes com os marcadores RAPD e ISSR

, 2012
Este trabalho teve como objetivo comparar e padronizar um protocolo eficiente para a extração de DNA de tecido de Podocnemis expansa e testar o poder informativo dos marcadores moleculares RAPD e ISSR para a análise da estrutura genética da espécie ...
Dias Oliveira, Jaqueline Das Dores, Oliceira Junior, Waldesse Piragé, Malvasio, Adriana, Oliveira, Deyla Paula   +3 more
core  

Enzymes of energy metabolism in hatchlings of amazonian freshwater turtles (Testudines, Podocnemididae)

Brazilian Journal of Biology
The metabolic profiles of selected tissues were analyzed in hatchlings of the Amazonian freshwater turtles Podocnemis expansa, P. unifilis and P. sextuberculata.
WP. Duncan, JL. Marcon
doaj   +1 more source

Ontogeny of the cranial bones of the giant amazon river turtle Podocnemis expansa Schweigger, 1812 (Testudines, Podocnemididae) = Ontogenia dos ossos do crânio em tartaruga-da-amazônia Podocnemis expansa Schweigger, 1812 (Testudines, Podocnemididae)

Acta Scientiarum: Biological Sciences, 2010
In order to determine the normal stages of formation in the sequence of ossification of the cranium of Podocnemis expansa in its various stages of development, embryos were collected starting on the 18th day of natural incubation and were subjected to ...
Lucélia Gonçalves Vieira, André Luiz Quagliatto Santos, Fabiano Campos Lima   +2 more
doaj  

Enterobacteria in free-living and captive Amazon turtles, Podocnemis expansa (Podocnemididae: Testudines)

, 2018
The turtle Podocnemis expansa is an important wildlife species from the Amazon rainforest of Brazil. This also represents an important resource for coastal communities, as it has been historically consumed as food. Nevertheless, besides the sustainability issues, recent concerns have been raised over the health of the animals and possible impacts on ...
Meyer Junior, Julio Cesar, Marinho, Marcia, Taparo, Cilene Vidovix, Costa, Joao Bosco da, Tavares Dias, Hilma Lucia   +4 more
openaire   +2 more sources

Composição nutricional do casco da tartaruga-da-Amazônia (Podocnemis expansa) criada em cativeiro e em idade de abate

, 2007
A criação de tartarugas em cativeiro no Brasil vem se expandindo nos últimos anos, destacando-se o aumento do volume de abate da espécie Podocnemis expansa para obtenção de carne.
Scarlato,Renata Cristina, Gaspar,Arlene
core   +1 more source

[Morphologic study of the embryonic development of the Amazonian turtle Podocnemis expansa, Pelomedusidae].

Revista brasileira de biologia, 1991
Two egg groups from four clutches of the Amazon turtle, Podocnemis expansa, were incubated at 32-34 degrees C and 35-38 degrees C, respectively. The incubation of the first group lasted approximately 47 days and the second 43 days. To standardize the stages, a series of 25 stages was recorded, based on observation of morphological evolution related to ...
T M, Danni, M A, Dardenne, S M, Nascimento   +2 more
openaire   +1 more source

Patterns of Paternity in Clutches of Giant Amazon River Turtles, Podocnemis expansa, from Venezuela

, 2013
In recent years, molecular genetic data have shown that multiple paternity occurs in groups of offspring in many taxa. Though multiple paternity has been found in a wide variety of turtles (Pearse and Avise 2001), limited clutch size and/or small number ...
Dastrup, R. Brigham, Sites, Dr. Jack W., Pearse, Devon E.   +2 more
core   +1 more source