Results 31 to 40 of about 11,969 (253)

Aspectos fisiopatológicos da retenção de ovos em Jabutipiranga (Geochelone carbonaria Spix, 1824) Fisiopathological aspects of egg retention in South American Red-footed Tortoise (Geochelone carbonaria Spix, 1824)

Ciência Rural, 2006
Das enfermidades que acometem o sistema genital de répteis, a retenção de ovos tem grande prevalência em quelônios. Neste trabalho, são analisados quatorze casos de retenção de ovos na espécie jabutipiranga (Geochelone carbonaria Spix, 1824), mantidos ...
Carlos Alexandre Rey Matias, Mário Antônio Pinto Romão, Rogério Tortelly, Sávio Freire Bruno   +3 more
doaj   +1 more source

Linear and landscape disturbances alter Mojave desert tortoise movement behavior

Frontiers in Ecology and Evolution, 2023
IntroductionAnimal movements are influenced by landscape features; disturbances to the landscape can alter movements, dispersal, and ultimately connectivity among populations.
Steven J. Hromada, Todd C. Esque, Amy G. Vandergast, K. Kristina Drake, Felicia Chen, Ben Gottsacker, Jordan Swart, Kenneth E. Nussear   +7 more
doaj   +1 more source

The Tortoise and the Hut

Emerging Infectious Diseases, 2011
“The men of old were born like the wild beasts. In woods, caves, and groves, they lived on food gathered in the fields,” wrote Marcus Vitruvius Pollio more than 2,000 years ago in his well-known account of classical traditions in architecture. One day, a dense group of trees, agitated by winds and storms, caught fire.
openaire   +3 more sources

Origami‐Inspired Structural Design for Aquatic‐Terrestrial Amphibious Robots

Advanced Robotics Research, EarlyView.
This work presents a lightweight amphibious origami robot actuated by a single shape memory alloy wire. A rigid foldable origami structure with displacement amplification enables efficient terrestrial crawling and aquatic swimming. The addition of fan‐shaped units allows controllable turning in both environments.
Weiqi Liu, Chunlong Wang, Xiaohang Sun, Hongwei Guo, Jiayao Ma, Yan Chen   +5 more
wiley   +1 more source

The basal release of endothelium-derived catecholamines regulates the contractions of Chelonoidis carbonaria aorta caused by electrical-field stimulation

Biology Open, 2021
The contractions of Chelonoidis carbonaria aortic rings induced by electrical field stimulation (EFS) are not inhibited by blockade of the voltage-gated sodium channels by tetrodotoxin but almost abolished by the α1/α2-adrenoceptor antagonist ...
José Britto-Júnior, Felipe Fernandes Jacintho, Rafael Campos, David Halen Araújo Pinheiro, Guilherme M. Figueiredo Murari, Valéria B. de Souza, André A. Schenka, Fabíola Z. Mónica, Ronilson Agnaldo Moreno, Edson Antunes, Gilberto De Nucci   +10 more
doaj   +1 more source

A Galapagos Tortoise

Science, 1915
n ...
openaire   +3 more sources

Turtles and Tortoises Are in Trouble [PDF]

Current Biology, 2020
Turtles and tortoises (chelonians) have been integral components of global ecosystems for about 220 million years and have played important roles in human culture for at least 400,000 years. The chelonian shell is a remarkable evolutionary adaptation, facilitating success in terrestrial, freshwater and marine ecosystems.
Stanford, Craig B., Iverson, John B, Rhodin, Anders G.J., Dijk, Peter Paul Van, Mittermeier, Russell A., Kuchling, Gerald, Berry, Kristin H., Bertolero, Albert, Bjorndal, Karen A., Blanck, Torsten E.G., Buhlmann, Kurt A., Burke, Russell L., Congdon, Justin D., Diagne, Tomas, Edwards, Taylor, Eisemberg, Carla Camilo, Ennen, Joshua R., Forero-Medina, Germán, Frankel, Matthew G., Fritz, Uwe, Gallego-García, Natalia, Georges, Arthur, Gibbons, J. Whitfield, Gong, Shiping, Goode, Eric V., Shi, Haitao, Hoang, Ha, Hofmeyr, Margaretha D., Horne, Brian D., Hudson, Rick, Juvik, James O., Kiester, A. Ross, Koval, Patricia, Le, Minh, Lindeman, Peter V., Lovich, Jeffrey E., Luiselli, Luca Maria, McCormack, Timothy E.M., Meyer, George A., Páez, Vivian P., Platt, Kalyar, Platt, Steven G., Pritchard, Peter Charles Howard, Quinn, Hugh R., Roosenburg, Willem M., Seminoff, Jeffrey A., Shaffer, H. Bradley, Spencer, Ricky John, van Dyke, James Urban, Vogt, Richard Carl, Walde, Andrew D.   +50 more
openaire   +3 more sources

Clade‐wide morphological and functional variation of the sauropsid columella

The Anatomical Record, EarlyView.
Abstract The columella (=stapes) is the middle ear bone of reptiles that transmits vibrations from the environment to the inner ear. It has been shown to exhibit extensive interspecific morphological disparity in several clades; however, its morphological variation and associated functional consequences remain poorly described.
John Peacock, Serjoscha W. Evers, Tiago R. Simões, Garth M. Spellman, Daniel J. Field   +4 more
wiley   +1 more source

The hare and the tortoise: Open access publications' immediate impact and lasting advantage

Journal of the Association for Information Science and Technology, EarlyView.
Abstract Open Access has changed how research is published and discovered. Studies generally report that OA articles are cited and mentioned more often than non‐OA, describing an open access advantage (OAA). The mechanisms causing the OAA are under‐investigated: this research analyzes citation and altmetrics post‐publication, reporting on the ...
Michael Taylor
wiley   +1 more source

A spatially explicit model for density that accounts for availability: a case study with Mojave desert tortoises

Ecosphere, 2023
Estimating population density and identifying those areas where density is changing through time are central to prioritizing conservation and management strategies.
Erin R. Zylstra, Linda J. Allison, Roy C. Averill‐Murray, Vincent Landau, Nathaniel S. Pope, Robert J. Steidl   +5 more
doaj   +1 more source