Results 1 to 10 of about 1,619 (185)

Cytogenetic comparison of Podocnemis expansa and Podocnemis unifilis: a case of inversion and duplication involving constitutive heterochromatin [PDF]

Genetics and Molecular Biology, 2013
Podocnemis expansa and P. unifilis present 2n = 28 chromosomes, a diploid number similar to those observed in other species of the genus. The aim of this study was to characterize these two species using conventional staining and differential CBG-, GTG ...
Ricardo José Gunski, Tiago Marafiga Degrandi, Analía del Valle Garnero   +2 more
exaly   +8 more sources

Avaliação de padrão irregular dos escudos do casco em Podocnemis expansa e Podocnemis unifilis (Testudines, Podocnemididae) Evaluation of irregular pattern of the shell scutes in Podocnemis expansa and 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 ...
Giovanni Salera-Junior, Adriana Malvasio, Thiago Costa Gonçalves Portelinha   +2 more
doaj   +11 more sources

Avaliação da predação de Podocnemis expansa e Podocnemis unifilis (Testudines, Podocnemididae) no rio Javaés, Tocantins Evaluation of predation in Podocnemis expansa and Podocnemis unifilis (Testudines, Podocnemididae) in the Javaés River, 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.
Giovanni Salera Junior, Adriana Malvasio, Thiago Costa Gonçalves Portelinha   +2 more
doaj   +10 more sources

Hematological and blood chemistry parameters of a Podocnemis vogli and P. unifilis captive population in Colombia [PDF]

Frontiers in Veterinary Science, 2022
The Podocnemididae family is seriously affected by anthropogenic factors, which is why almost all of their family members are threatened, according to the IUCN red list.
Cristian Rodríguez-Almonacid, Gustavo Fuentes-Rodríguez, Leidy P. González, Carlos Moreno-Torres, Nubia E. Matta   +4 more
doaj   +7 more sources

Beyond Sea Turtles: Fusarium keratoplasticum in Eggshells of Podocnemis unifilis, a Threatened Amazonian Freshwater Turtle [PDF]

Journal of Fungi, 2021
The endangered yellow-spotted river turtle (Podocnemis unifilis) has experienced a dramatic population decline in the Ecuadorian Amazonia, mainly due to overexploitation of its eggs.
Joaquina M. García-Martín, Jullie M. Sarmiento-Ramírez, Javier Diéguez-Uribeondo   +2 more
doaj   +6 more sources

A new species of Orientatractis (Nematoda: Cosmocercoidea: Atractidae) parasite of Yellow-Spotted Amazon River Turtle, Podocnemis unifilis Troschel, 1848 (Testudines: Podocnemididae) in Brazilian Amazon [PDF]

International Journal for Parasitology: Parasites and Wildlife, 2023
The current study describes a new species of nematode, Orientatractis matosi n. sp. (Atractidae), from the stomach and large intestine of Podocnemis unifilis Troschel, 1848 (Testudinidae), collected in the Tocantins and Xingu rivers in the Brazilian ...
Ronald Ferreira Jesus, Sara Caroline Gama Oliveira, Isabel Mercedes Centeno Ramos, Francisco Tiago Vasconcelos Melo   +3 more
doaj   +2 more sources

New insights of karyoevolution in the Amazonian turtles Podocnemis expansa and Podocnemis unifilis (Testudines, Podocnemidae). [PDF]

Mol Cytogenet, 2016
Cytogenetic studies were conducted in the Brazilian Amazon turtles, Podocnemis expansa Schweigger, 1912 (PEX) and Podocnemis unifilis Troschel, 1848 (PUN) to understand their karyoevolution. Their chromosomal complements were compared using banding techniques (C, G-, Ag-NOR and Chromomycin A3) and fluorescence in situ hybridization (FISH), and efforts ...
Noronha RC, Barros LM, Araújo RE, Marques DF, Nagamachi CY, Martins C, Pieczarka JC.   +6 more
europepmc   +6 more sources

Assessment of Mercury Concentration in Turtles (Podocnemis unifilis) in the Xingu River Basin, Brazil. [PDF]

Int J Environ Res Public Health, 2018
Many studies on mercury contamination in aquatic biota deal with the effect of consuming metal-contaminated organisms on human health. In this study, we examined the factors that cause mercury contamination in Podocnemis unifilis in the Xingu River Basin of Mato Grosso and Pará States, Brazil.
Pignati MT, Pezzuti JCB, Souza LC, Lima MO, Pignati WA, Mendes RA.   +5 more
europepmc   +4 more sources

Nesting ecology of Podocnemis expansa (Schweigger, 1812) and Podocnemis unifilis (Troschel, 1848) (Testudines, Podocnemididae) in the Javaés River, Brazil [PDF]

Brazilian Journal of Biology, 2010
Nest site has influence on incubation duration and hatching success of two Neotropical turtles, the Giant Amazon River Turtle (Podocnemis expansa) and Yellow-Spotted Side-Neck Turtle (Podocnemis unifilis - "Tracajá").
PD. Ferreira Júnior, PTA. Castro
doaj   +4 more sources

Parasitic Fauna of Free-Living <i>Chelonoidis denticulatus</i> From the Rio Acre Ecological Station and the Municipality of Cruzeiro do Sul, Western Amazon, Brazil. [PDF]

Vet Med Int
Tortoises, such as Chelonoidis denticulatus, are described as hosts of many parasites, such as helminths and ticks of the genus Amblyomma, which are important vectors of rickettsial infection in Brazil. Additionally, the high consumption of meat from these animals in Acre results in a high risk of zoonotic outbreaks due to contact with the hosts and ...
da Costa EN, Gomes CB, Madeira RG, Moura JJS, de Assis MF, Gomes APC, Silva VLB, Moraes IS, de Moraes RS, Pacheco RC, Ramos DGS, Santos FGA.   +11 more
europepmc   +2 more sources