Results 81 to 90 of about 1,619 (185)

Developmental basis of limb homology in Pleurodiran turtles, and the identity of the hooked element in the chelonian tarsus [PDF]

, 2009
Although Pleurodiran turtles represent an important component of extant turtle radiation, our knowledge of the development and homology of limb bones in turtles rests mostly upon observations made on derived members of the Cryptodiran clade.
Abdala, Virginia Sara Luz, Fabrezi, Marissa, Manzano, Adriana Silvina, Zaher, Hussam   +3 more
core   +2 more sources

Simple radiography of the coelomic cavity in Podocnemis expansa and Podocnemis unifilis: proposal for an illustrative atlas as a diagnostic tool

Brazilian Journal of Animal and Environmental Research
Testudines are among the most popular reptiles chosen as exotic pets and, as a result, are referred more frequently for veterinary evaluation. However, it is difficult to investigate pathologies in these individuals due to their body conformation, which prevents a detailed physical examination.
Juliana Valentin Portela, Leandro Nassar Coutinho, Ellen Yasmin Eguchi Mesquita, Bármela da Silva   +3 more
openaire   +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

Functional and Character Disparity Are Decoupled in Turtle Mandibles

Ecology and Evolution, Volume 14, Issue 11, November 2024.
Here, we compare functional disparity measured by biomechanical proxies and character disparity measured by discrete morphological characters in turtle jaws. Exploration of mandibular patterns reveals that several biomechanical configurations or character state combinations can lead to the same feeding type (i.e., convergence) or that high functional ...
Jasper Ponstein, Guilherme Hermanson, Merlin W. Jansen, Johan Renaudie, Jörg Fröbisch, Serjoscha W. Evers   +5 more
wiley   +1 more source

The global decline of reptiles, deja’ vu amphibians [PDF]

, 2000
Reptile species are declining on a global scale. Six significant threats to reptile populations are habitat loss and degradation, introduced invasive species, environmental pollution, disease, unsustainable use, and global climate ...
Buhlmann, Kurt A., Gibbons, J. Whitfield, Greene, Judith L., Leiden, Yale, Metts, Brian S., Mills, Tony, Poppy, Sean, Ryan, Travis J., Scott, David E., Tiuberville, Tracey D., Winne, Christopher T.   +10 more
core   +1 more source

Challenges to the Conservation of River Turtles (spp. Podocnemis) in the Peruvian Amazon [PDF]

, 2009
These images were captured during the summer of 2007 as part of an ongoing study that addresses habitat and community dynamics from broad to narrow ecological vantage points.
Laso, Francisco
core   +2 more sources

The topological organization of the turtle cranium is constrained and conserved over long evolutionary timescales

The Anatomical Record, Volume 307, Issue 8, Page 2713-2748, August 2024.
Abstract The cranium of turtles (Testudines) is characterized by the secondary reduction of temporal fenestrae and loss of cranial joints (i.e., characteristics of anapsid, akinetic skulls). Evolution and ontogeny of the turtle cranium are associated with shape changes.
Eve Miller, Hiu Wai Lee, Arkhat Abzhanov, Serjoscha W. Evers   +3 more
wiley   +1 more source

“Long time no see”: redescription of Orientatractis leiperi (Nematoda: Atractidae) parasite of Podocnemis unifilis (Testudines: Podocnemididae) from Pará State, Brazil

Revista Mexicana de Biodiversidad, 2020
During a helminthological survey on freshwater turtles from the Brazilian Amazon, we collected fresh and well-preserved nematodes from the stomach of Podocnemis unifilis Troschel, 1848, that resembled Orientatractis leiperi.
Ronald F. Jesus, Evelyn L. Cardoso, Yuri Willkens, Adriano P. Futado, Jeannie N. dos Santos, Francisco T. V. Melo   +5 more
doaj   +1 more source

Chondrocranial anatomy of Testudo hermanni (Testudinidae, Testudines) with a comparison to other turtles

Journal of Morphology, Volume 285, Issue 7, July 2024.
Histology‐based 3D reconstructions of the chondrocrania (blue), palatoquadrates (purple), and columellae (yellow) of a younger (top) and an older (below) specimen of Hermann's tortoise, Testudo hermanni (Testudines), in ventral views. The first vertebra (green) is partially reconstructed. Based on Figure 3.
Carola Mauel, Luca Leicht, Yevhenii Broshko, Oleksandr Yaryhin, Ingmar Werneburg   +4 more
wiley   +1 more source

Habitat, population structure and community consume of Podocnemis unifilis and P. expansa (testudines: podocnemididae ) turtles in Curare-Los ingleses reserve, La Pedrera, Amazonas, Colombia

Mundo Amazónico, 2014
Habitat, population structure and consume of these resources by indigenous communities are determining factors for management and conservation of amazonian chelonians.
Ilba Carolina Figueroa, Augusto Fachín-Terán, Santiago Roberto Duque   +2 more
doaj