Results 71 to 80 of about 1,521 (186)

Neotropical Snakes Reveal Different Geological Times for Dispersal Corridors Between Amazon and Atlantic Forests

Zoologica Scripta, EarlyView.
ABSTRACT Three forested dispersal corridors have been proposed within the diagonal of open/dry landscapes in South America and the relative importance of each one has been the subject of debate for forest organisms. We analysed the biogeographical history of three snake genera (Bothrops, Philodryas, and Micrurus) from different families (Viperidae ...
Matheus Pontes‐Nogueira, Tiago F. Carrijo, Ricardo J. Sawaya   +2 more
wiley   +1 more source

Is resting muscle sympathetic nerve activity related to peripheral or cerebrovascular haemodynamics at high altitude? A retrospective analysis

Experimental Physiology, EarlyView.
Abstract High‐altitude hypoxia elicits several profound physiological responses, including substantial increases in muscle sympathetic nerve activity (MSNA); however, the association of this heightened MSNA with cardiovascular and cerebrovascular haemodynamics remains unclear in lowlanders and indigenous highlander populations.
Ty J. A. MacDonald, Jenna C. McCrone, Christabel Osei‐Boateng, Connor D. Wideman, Samantha L. Tsioros, Joshua C. Tremblay, Alexander Patrician, Connor A. Howe, Geoff B. Coombs, Benjamin S. Stacey, Lydia L. Simpson, Mike Stembridge, Craig D. Steinback, Jonathan P. Moore, Travis D. Gibbons, Ryan L. Hoiland, Francisco Villafuerte, Gilbert Moralez, Philip N. Ainslie, Michael M. Tymko   +19 more
wiley   +1 more source

Registros de ocurrencia del oso andino (Tremarctos ornatus Cuvier, 1825) en sus límites de distribución nororiental y austral Occurrence of the Andean bear (Tremarctos ornatus Cuvier, 1825) in its north eastern and southern limit of distribution.

Revista del Museo Argentino de Ciencias Naturales, 2011
El conocimiento de la distribución del oso andino (Tremarctos ornatus), es fundamental para evaluar el estado de conservación de la especie y el desarrollo de medidas de conservación tales como la declaración de nuevas áreas protegidas o la ...
J. Fernando Del Moral Sachetti, Fátima I Lameda Camacaro   +1 more
doaj  

Forest integrity and elevation as drivers of habitat use by medium to large mammals in a conservation priority site in the Northern Andes

Global Ecology and Conservation
Understanding the environmental drivers of habitat use by medium to large (M–L) mammals is essential for tropical forest conservation. In the Neotropics, survey data for this group remain spatially incomplete, and species’ responses to natural and ...
Sebastian Botero-Cañola, William Bonell-Rojas, Juan David Sánchez-Londoño, Oscar Godínez-Gómez, José Miguel Romero-López, Luz Dary Acevedo-Cendales, Jenny Gallo, Carlos Andrés Valderrama-Vasquez, Joe J. Figel   +8 more
doaj   +1 more source

Impact of living and training at low altitude for several years on endurance performance at higher altitude: Myth or reality

Experimental Physiology, EarlyView.
Abstract The physiological adaptations of long‐term high‐altitude residents without high‐altitude genetic ancestry remain poorly characterized. This study investigated whether permanent residence at low altitude (1200 m) influences performance at higher altitude (2500 m). We compared exercise responses at 2500 m in endurance‐trained athletes living for
Fabienne Durand, Sergi Brau Villaro, Antoine Raberin   +2 more
wiley   +1 more source

Cryptic Genetic Diversity in Deer: The Evolution of the White-Tailed Deer (Cervidae, Artiodactyla) in the Neotropics

Diversity
The systematics of white-tailed deer (Odocoileus virginianus) has been controversial. Some mammalogists consider the white-tailed deer to be a single species, whereas others consider it to consist of multiple species.
Manuel Ruiz-García, Jessica Arias-Vásquez, Angie Luna, Armando Castellanos, Jorge Brito, Percy Colos Galindo, Yuri Oliver Ayala Sulca, François Catzeflis, Joseph Mark Shostell   +8 more
doaj   +1 more source

High‐elevation adaptation and gestational hypoxia jointly shape vascular development in a rodent placenta

The Journal of Physiology, EarlyView.
Abstract figure legend We investigated how environmental hypoxia and genetic adaptation to high altitudes jointly impact the development of the placental exchange surface in ways that might protect fetal growth potential. We used wild‐derived, lab‐born North American deer mice (Peromyscus maniculatus) from low‐elevation and high‐elevation environments (
Kathryn Wilsterman, Zachary A. Cheviron, Jeffrey M. Good, Kai Gurnoe‐Brantley, Kylie E. Jewett, Katherine Kiel, Ashley M. Larson   +6 more
wiley   +1 more source

Ventilatory and heart rate responses to hypoxia in pre‐ and post‐menopausal ethnically Tibetan women residing at ∼3800 m in Mustang, Nepal

The Journal of Physiology, EarlyView.
Abstract figure legend Tibetan women livingat high altitude exhibit distinct physiological traits that can enhance oxygen transport in chronic hypoxia. Menopausal status influences cardiopulmonary responses to hypoxia in women living at low altitudes.
E. A. Moya, J. J. Yu, S. R. Craig, A. Di Rienzo, D. Witonsky, W. Gu, B. Basnyat, K. P. Strohl, F. L. Powell, T. S. Simonson, C. M. Beall   +10 more
wiley   +1 more source

Between Borderisation and Multi/Transterritoriality: Dilemmas of Decolonising Territory in Abya Yala/Afro/Latin America

Transactions of the Institute of British Geographers, Volume 51, Issue 4, December 2026.
ABSTRACT This article addresses the issue of territory in Abya Yala/Afro/Latin America from a decolonial perspective and through the links and contradictions between the processes we call borderisation and multi or trans‐territorialisation, emphasising, in this case, the multiplicity of territory as an instrument of struggle and re‐existence, where ...
Rogério Haesbaert
wiley   +1 more source

Dynamic trend analysis of global psoriasis burden from 1990 to 2021: a study of gender, age, and regional differences based on GBD 2021 data

Frontiers in Public Health
BackgroundPsoriasis is a chronic immune-mediated skin disease associated with systemic comorbidities such as cardiovascular disease and depression. While genetic susceptibility, immune dysregulation, and environmental factors are known contributors, the ...
Jikui Xiong, Tiankuo Xue, Meng Tong, Libo Xu, Bingxue Bai   +4 more
doaj   +1 more source