Results 21 to 30 of about 1,866 (199)

Transferrin polymorphism in Amazon turtle (Podocnemis expansa) stocks [PDF]

Brazilian Journal of Genetics, 1996
The transferrin gene locus (Tf) was investigated in five populations of the Amazon turtle (Podocnemis expansa) sampled from five geographical areas in the Amazon region. This locus was polymorphic, showing three genotypes (Tfa Tfa, Tfa Tfb and Tfb Tfb), presumably encoded by two co-dominant alleles, Tfa and Tfb.
Teixeira, Aylton Saturnino, Jamieson, Alan, Raposo, José Carlos Paula, Vieira, Alvaro Alves   +3 more
openaire   +4 more sources

Temperature-sex determination in Podocnemis expansa (Testudines, Podocnemididae) [PDF]

Iheringia. Série Zoologia, 2011
This study has been carried out at the central region of the Araguaia river on the border between the states of Goiás and Mato Grosso in the Brazilian Amazon Basin from September to December 2000. We recorded temperature fluctuation, clutch-size, incubation period and hatching success rate and hatchlings' sex ratio of five nests of Podocnemis expansa ...
Bonach, Kelly, Malvasio, Adriana, Matushima, Eliana R., Verdade, Luciano M.   +3 more
openaire   +4 more sources

Refractometry as an alternative to the biuret method for measuring total serum proteins in Podocnemis expansa (Podocnemididae) and Phrynops geoffroanus (Chelidae) [PDF]

Acta Amazonica, 2017
Total serum protein is a significant indicator of health condition in animals. The aim of this study was to analyze the precision of the portable refractometer in determining the concentration of total serum proteins in Podocnemis expansa and Phrynops ...
Lourdes Marina Bezerra PESSOA, Maíra Gonçalves da Mota LIMA, Filipe Tavares CARNEIRO, Nathalia Salgado ZANANI, Marcela Corrêa SCALON, Thamiris Figueiredo SILVA, Mariana Accioly LIMA, Maia Araújo ABRAHIM, Giane Regina PALUDO   +8 more
doaj   +2 more sources

Allometry of reproduction of Podocnemis expansa in Southern Amazon basin

Amphibia-Reptilia, 2006
Abstract Podocnemis expansa (giant Amazon freshwater turtle) is the biggest freshwater turtle of South America. Like in other reptiles, the nest of P. expansa is a hole in the sand deep enough to avoid predators and extremes of temperature and humidity.
Bonach, K., Piña, Carlos Ignacio, Verdade, Luciano Martins   +2 more
openaire   +6 more sources

Sincronia entre o regime de vazante do rio e o comportamento de nidificação da tartaruga da Amazônia Podocnemis expansa (Testudinata: Pelomedusidae) [PDF]

Acta Amazonica, 1982
Resumo Há uma sincronização entre a vazante e o desencadeamento do comportamento de nidificação da tartaruga da Amazônia Podocnemis expansa. O comportamento de nidificação só começa quando o nível da água se estabiliza em seu nível mais baixo.
Cleber J. R. Alho, Luiz F. M. Pádua
doaj   +1 more source

Community-Based Conservation and Management of Chelonians in the Amazon

Frontiers in Ecology and Evolution, 2022
Chelonians represent an important resource in the Amazon, either as a source of protein at the base of the food chain of aquatic and transition ecosystems, or in the dispersion of seeds of plants from floodplains and flooded forests.
Paulo Cesar Machado Andrade, Paulo Henrique Guimarães de Oliveira, Aldeniza Cardoso de Lima, João Alfredo da Mota Duarte, Sandra Helena da Silva Azevedo, Anndson Brelaz de Oliveira, Carlos Dias de Almeida, Eleyson Barboza da Silva, Jânderson Rocha Garcez, José Ribamar da Silva Pinto, Liriann Chrisley Nascimento da Silva, Midian Salgado Monteiro, Wander da Silva Rodrigues, Thiago Luiz Ferreira Anízio, Alfredo Luiz Belém Pontes, Ruth Lima Teixeira, Jefferson Moreira da Silva, Wallice Luiz Paxiúba Duncan, Richard Carl Vogt   +18 more
doaj   +1 more source

Detection of anti-Leptospira spp. agglutinins in captive South American river turtles, Podocnemis expansa [PDF]

Acta Amazonica, 2020
Leptospirosis is a zoonosis transmitted by contact with infected urine or water contaminated with the agent. Searches for Leptospira spp. in reptiles are scarce although most species have contact with aquatic environments.
Katarine de SOUZA ROCHA, Louysse Helene MONTEIRO, Juliana Maria SANTOS MIRANDA, Ianny Watuzy MONTEIRO BAIA, Thamillys Rayssa MARQUES MONTEIRO, Gleiciane SCHUPP DE SENA MESQUITA, Mirian da ROCHA ALBUQUERQUE, Layna THIEMY YOKOKURA, Gabriela CASTANHEIRA PIMENTA, Maria Érika TEIXEIRA GOMES, Pedro Henrique MARQUES BARROZO, Danniel CARVALHO DE CASTRO, André Luiz ABENSUR VIEIRA, Ellen Yasmin EGUCHI MESQUITA, Carla Cristina GUIMARÃES DE MORAES   +14 more
doaj   +1 more source

A systematic compendium of turtle mandibular anatomy using digital dissections of soft tissue and osteology

The Anatomical Record, Volume 306, Issue 6, Page 1228-1303, June 2023., 2023
Abstract Turtles are a charismatic reptile group with a peculiar body plan, which most notably includes the shell. Anatomists have often focused descriptive efforts on the shell and other strongly derived body parts, such as the akinetic skull, or the cervical vertebrae.
Serjoscha W. Evers, Jasper Ponstein, Maren A. Jansen, Jaimi A. Gray, Jörg Fröbisch   +4 more
wiley   +1 more source

Predation on adult females of Podocnemis expansa Schweigger (Testudines, Podocnemididae) by Panthera onca Linnaeus (Carnivora, Felidae), in Tocantins State [PDF]

, 2009
Podocnemis expansa (tartaruga-da-amazônia) é o maior e mais importante representante da fauna de quelônios da Amazônia devido à sua importância econômica como fonte alimentar para as populações indígenas e ribeirinhas desta região.
Costa Gonçalves Portelinha, Thiago, Malvásio, Adriana, Salera Jr., Giovanni   +2 more
core   +2 more sources

Osteohistological characterization of notosuchian osteoderms: Evidence for an overlying thick leathery layer of skin

Journal of Morphology, Volume 284, Issue 1, January 2023., 2023
The perpendicular insertion of Sharpey's fibers in the external cortex suggests the presence of a thick leathery skin layer overlying notosuchian osteoderms. Although intramembranous ossification is the main process involved in the development of crocodyliform osteoderms, we reported a case of metaplastic development.
Mariana Valéria de Araújo Sena, Thiago da Silva Marinho, Felipe Chinaglia Montefeltro, Max Cardoso Langer, Thiago Schineider Fachini, William Roberto Nava, André Eduardo Piacentini Pinheiro, Esaú Victor de Araújo, Paul Aubier, Rafael César Lima Pedroso de Andrade, Juliana Manso Sayão, Gustavo Ribeiro de Oliveira, Jorge Cubo   +12 more
wiley   +1 more source