Results 1 to 10 of about 2,075 (189)

Skeletochronology of the endangered side-neck turtle, Podocnemis expansa [PDF]

, 2008
Previous preliminary mark–recapture studies, and assessment of carapace length and annuli of the endangered giant Amazonian river turtle, Podocnemis expansa, have provided some insight into various aspects of their population structure and overall ...
Chinsamy, Anusuya, Valenzuela, Nicole, Valenzuela, Nicole   +2 more
core   +7 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

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 Júnior, Paulo de Tarso Amorim Castro   +1 more
openalex   +6 more sources

Management and relocation of nests of Podocnemis expansa (Schweigger, 1812) (Testudines, Podocnemididae) on the Crixás-Açu river, Brazil [PDF]

Acta Scientiarum. Biological Sciences, 2021
The present study aimed to study the reproduction of the Amazon turtle (Podocnemis expansa) through the evaluation of the reproductive parameters of adult females. This study was carried out in the Crixás-Açu River, municipality of Mundo Novo, state of Goiás, Brazil.
ALHO CJR., ALHO CJR., AS. Gomes, BATISTELLA AM., BJORDNAL KA., BRODERICK AC., BULL JJ., CORREA JCH., FERREIRA JÚNIOR PD., FERREIRA JÚNIOR PD., FERREIRA JÚNIOR PD., FERREIRA JÚNIOR PD., FERREIRA JÚNIOR PD., FERREIRA JÚNIOR PD., FOLK RK., GEORGES A., GIRONDOT M., GODLEY BJ., GODLEY BJ., HOSMER D.W., LUBIANA A., MALVASIO A., MALVASIO A., MALVASIO A., MARCOVALDI MA., MILTON SL., MITCHELL C., MORREALE SJ., MROSOVSKY N., MROSOVSKY N., MROSOVSKY N., MROSOVSKY N., NARO-MACIEL E., PD. Ferreira Júnior, PEZZUTI JCB., PIEAU C., PRITCHARD PCH., RUEDA-ALMONACID JV., SALERA JÚNIOR G., TUTTLE J., VALENZUELA N., VALENZUELA N., VALENZUELA N., VALENZUELA N., YNTEMA CL.   +44 more
core   +7 more sources

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.
MALVASIO, Adriana, PORTELINHA, Thiago Costa Gonçalves, SALERA JUNIOR, Giovanni   +2 more
core   +8 more sources

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

Genet Mol Biol, 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 and Ag-NOR banding. We analyzed specimens of P. expansa and P.
Gunski RJ, Cunha IS, Degrandi TM, Ledesma M, Garnero Adel V.   +4 more
europepmc   +7 more sources

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 ...
Costa Gonçalves Portelinha, Thiago, Malvásio, Adriana, Salera Junior, Giovanni   +2 more
core   +8 more sources

Transplantation of nest of amazonian turtle Podocnemis expansa (Schweigger, 1812)

Bioscience Journal, 2020
The main objective of this study is to analyze the effectiveness of the Podocnemis expansa nest transplantation technique used to aid in the conservation of the species, aiming to increase the number of individuals in nature. The Amazonian turtle is famous for its large size and commercial attractiveness, being the target of rampant hunting, mainly by ...
Thays Nogueira Lobo Ribeiro, Rodrigo Diana Navarro   +1 more
openalex   +6 more sources

CARACTERIZAÇÃO DOS NINHOS E IDENTIFICAÇÃO SEXUAL DE PODOCNEMIS EXPANSA, TARTARUGA DA AMAZÔNIA

DESAFIOS - Revista Interdisciplinar da Universidade Federal do Tocantins, 2022
As alterações climáticas e os impactos que o planeta vem sofrendo com as ações humanas, tornam os monitoramentos ecológicos e da biodiversidade imprescindíveis. Estudos sobre determinação sexual dependente da temperatura de incubação dos ovos, em quelônios, apresentam vários desafios, sendo um deles relacionado à identificação sexual dos filhotes.
Ana Karla Gonçalves Kagueiama, Adriana Malvásio, Heitor Campos de Sousa, Fábio de Castro, Adson Gomes de Ataídes, Roberto Leandro da Silva   +5 more
openalex   +3 more sources

Parasitic Fauna of Free‐Living Chelonoidis denticulatus 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 E, Gomes C, Madeira R, Moura J, de Assis M, Gomes A, Silva V, Moraes I, de Moraes R, Pacheco R, Ramos D, Santos F.   +11 more
europepmc   +2 more sources