Results 51 to 60 of about 2,075 (189)

Development of scleral ossicles in Podocnemis expansa (Testudines: Podocnemididae) embryos exposed to atrazine

Drug and Chemical Toxicology, 2019
Understanding the effects of atrazine exposure on embryo development in oviparous animals may provide important data regarding the impacts of agrochemical use on wildlife and the ecosystem. This study set out to determine the effects of embryonic atrazine exposure on the development of osseous and cartilaginous components of scleral ossicles in ...
Carneiro, Isabela Vieira, Gonçalves Vieira, Lucélia, dos Santos Mendonça, Juliana, Queiroz Luz Hirano, Líria, Chavauty Valdes, Sady Alexis, Tannús Menezes-Reis, Lorena, Quagliatto Santos, André Luiz   +6 more
openaire   +3 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

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

, 2021
Nicole Valenzuela
openalex   +1 more source

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  

Podocnemis unifilis [PDF]

, 2012
Number of Pages: 33Integrative BiologyEarth and Planetary ...
Iverson, John B., Schneider, Larissa, Vogt, Richard C.   +2 more
core   +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

Optimization proposal for data capture monitoring of charapa turtle at parques nacionales under project management institute focus [PDF]

, 2014
La estrategia de conservación para tortuga charapa en el contexto en el que se desenvuelve, se centra en acuerdos de uso de la especie con las comunidades indígenas y en la protección de nidadas, las actividades de monitoreo se concentran principalmente ...
Aldana, Miller Alexander, Devia, Yenny Paola, Sierra Rincón, Oscar Javier   +2 more
core  

Counting animals in orthomosaics from aerial imagery: Challenges and future directions

Methods in Ecology and Evolution, Volume 16, Issue 6, Page 1051-1060, June 2025.
Abstract The use of drones to survey and monitor wildlife populations has increased exponentially. A common protocol used for data collection is planning flights with substantial overlap between successive photographs and lateral lines and then creating orthomosaics by merging the collected images.
Ismael V. Brack, Camila Ferrara, German Forero‐Medina, Enrique Domic‐Rivadeneira, Omar Torrico, Kevin Thomas Wanovich, Benjamin Wilkinson, Denis Valle   +7 more
wiley   +1 more source

A systematic comparative description of extant turtle humeri, with comments on humerus disparity and evolution based on fossil comparisons

The Anatomical Record, Volume 307, Issue 11, Page 3437-3505, November 2024.
Abstract The humerus is central for locomotion in turtles as quadrupedal animals. Osteological variation across testudine clades remains poorly documented. Here, we systematically describe the humerus anatomy for all major extant turtle clades based on 38 species representing the phylogenetic and ecological diversity of crown turtles.
Guilherme Hermanson, Fernando A. M. Arnal, Tomasz Szczygielski, Serjoscha W. Evers   +3 more
wiley   +1 more source