Results 71 to 80 of about 1,866 (199)

Association of midazolam with ketamine in giant Amazon river turtles Podocnemis expansa breed in captivity [PDF]

Acta Cirurgica Brasileira, 2012
PURPOSE: Evaluate the effects of two anesthetic associations in giant Amazon river turtles (P. expansa). METHODS: Twenty P. expansa, healthy, of both sexes, with weights between 1.0 and 1.5 kg of a commercial breeding facility located in the valley of the Araguaia River, Goiás, Brazil, were divided into two groups ( G1 n = 10 and G2 n = 10). Each group
Alves-Júnior, José Roberto Ferreira, Bosso, Andréa Cristina Scarpa, Andrade, Mariana Batista, Werther, Karin, Santos, André Luiz Quagliatto   +4 more
openaire   +5 more sources

Breaking down silos: Conservation areas for Amazonian flagship terrestrial and freshwater species

Conservation Science and Practice, Volume 7, Issue 9, September 2025.
This study shows that 17% of the Amazon River Basin is covered by areas of high jaguar density and freshwater migratory species richness, 83% of which are found in Brazil and Peru. A third of these areas are located outside of formal protected areas or Indigenous territories.
Natalie Shahbol, Melissa Arias, Valeria Boron, Helga Correa Wiederhecker, Bernardo Caldas De Oliveira, Fabiola La Rosa, Robin Naidoo, Marcelo Oliveira‐Da‐Costa, Jessica Pacheco, Mariana Paschoalini Frias, Sandra Petrone, Lila Sainz, David Tickner, Fernando Trujillo, José Saulo Usma Oviedo, Paul Andre Van Damme, Michele Thieme   +16 more
wiley   +1 more source

Methodological limitations of counting total leukocytes and thrombocytes in reptiles (Amazon turtle, Podocnemis expansa): an analysis and discussion Limitações metodológicas de contagens de leucócitos e trombócitos totais em répteis (tartaruga da Amazônia, Podocnemis expansa): uma análise e discussão

Acta Amazonica, 2008
The aim of this paper is to compare three different methods for counting white blood cells [WBC] (Natt and Herrick method, estimation with 1,000 and 2,000 erythrocytes) and three methods for counting total thrombocytes [TT] (Wojtaszek method, estimation ...
Marcos Tavares-Dias, Antônio Aderson Oliveira-Júnior, Jaydione Luiz Marcon   +2 more
doaj   +1 more source

Isotopic ordering in eggshells reflects body temperatures and suggests differing thermophysiology in two Cretaceous dinosaurs [PDF]

, 2015
Our understanding of the evolutionary transitions leading to the modern endothermic state of birds and mammals is incomplete, partly because tools available to study the thermophysiology of extinct vertebrates are limited.
Cerling, Thure E., Chiappe, Luis M., Eagle, Robert A., Eiler, John M., Enriquez, Marcus, Grellet-Tinner, Gerald, Hu, David, Kohn, Matthew J., Loyd, Sean J., Montanari, Shaena, Pérez-Huerta, Alberto, Ramirez, Pedro, Tripati, Aradhna K., Tütken, Thomas   +13 more
core   +3 more sources

Estimating abundance of aggregated populations with drones while accounting for multiple sources of errors: A case study on the mass nesting of Giant South American River Turtles

Journal of Applied Ecology, Volume 62, Issue 8, Page 2036-2047, August 2025.
The developed approach can be applied to several contexts to efficiently survey spatially aggregated populations using drone‐derived orthomosaics, and to understand phenology at these aggregation sites. We provide general recommendations for planning surveys and discuss implementations of our approach using other types of marking methods and model ...
Ismael V. Brack, Denis Valle, Camila Ferrara, Omar Torrico, Enrique Domic‐Rivadeneira, German Forero‐Medina   +5 more
wiley   +1 more source

Nesting and neonates of the yellow-spotted river turtle (Podocnemis unifilis, Podocnemididae) in the Araguari River basin, eastern Amazon, Brazil. [PDF]

, 2019
Predation and alteration of microhabitats may represent high risk for nesting of Amazonian turtles. This study aimed at investigating the nesting and body parameters of neonates of Podocnemis unifilis in the Araguari River basin, State of Amapá, Brazil ...
ARRAES, D. R. dos S., TAVARES-DIAS, M.
core  

Biology and Conservation of the Freshwater Turtles and Tortoises of Peru [PDF]

, 2012
Little information has been published on Peruvian chelonians. Here we have compiled the available literature pertaining to Peruvian freshwater turtles and tortoises on four topics: Human consumption and ethnobiology, habitat use, status and abundance ...
Ferronato, Bruno O., Morales, Victor M.
core   +3 more sources

Population Structure ofPodocnemis expansa(Testudines: Podocnemididae) in Southern Brazilian Amazon

Copeia, 2014
Detailed studies of the population structure of most species of turtles in the Amazon Basin are lacking throughout their range. We estimated sex ratio, size structure, relative abundance, and recapture index for the Giant South American River Turtle (Podocnemis expansa) in Javaes River, southern Brazilian Amazon.
Costa Gonçalves Portelinha, Thiago, Malvásio, Adriana, Piña, Carlos Ignacio, Bertoluci, Jaime   +3 more
openaire   +2 more sources

Using life history to predict outcomes of conservation translocations of herpetofauna

Animal Conservation, Volume 28, Issue 4, Page 592-606, August 2025.
We collected data on key life history traits for all herpetofauna profiled in the IUCN Global Conservation Translocation Perspectives series to examine how life history can predict outcomes and difficulties of conservation translocations. The relationships we found provide important insights for conservation practitioners that can be used in the ...
M.R. Parker, L.A. Fitzgerald
wiley   +1 more source

Neonatal biometry and characterization of Amazonian Turtle nests (Podocnemis expansa)

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.
Rodrigo Diana Navarro, Ana Carolina Tavora Lima Alves   +1 more
doaj   +1 more source