Results 11 to 20 of about 20,807 (310)
Invasive alien species (IAS) are a threat to biodiversity and ecosystem function worldwide. Unfortunately, researchers, agencies, and other management groups face the unresolved challenge of effectively detecting and monitoring IAS at large spatial and ...
José W. Ribeiro +5 more
doaj +1 more source
Geographic Variation in Organ Size in a Toad (Duttaphrynus melanostictus)
Adaptive evolution is the process by which organisms change their morphological, physiological and biochemical characteristics to adapt to different environments during long-term natural selection.
Weiye Deng +4 more
doaj +1 more source
Testing the Role of Natural and Sexual Selection on Testes Size Asymmetry in Anurans
Directional asymmetry in testes size is commonly documented in vertebrates. The degree of testes size asymmetry has been confirmed to be associated with natural and sexual selection. However, the role of natural and sexual selection driving variations in
Shengnan Chen +3 more
doaj +1 more source
The objective of the present study was to evaluate whether gender determination in two amphibian species (Kaloula pulchra and Xenopus laevis) can be reliably carried out by means of magnetic resonance imaging (benchtop magnetic resonance imaging; BT-MRI)
María José Ruiz-Fernández +9 more
doaj +1 more source
Immunoendocrinology and Ecoimmunology in Brazilian Anurans
AbstractThis paper reviews several aspects of immunoendocrinology and ecoimmunology in Brazilian species of anurans under investigation for more than a decade, including (1) patterns of annual covariation of circulating steroids, calling behavior and innate immunity, (2) endocrine and immune correlates of calling performance, (3) behavioral and ...
Fernando Ribeiro, Gomes +4 more
openaire +2 more sources
CALL BROADCASTING AND AUTOMATED RECORDERS AS TOOLS FOR ANURAN SURVEYS IN A SUBARCTIC TUNDRA LANDSCAPE [PDF]
Relatively little is known about population ecology of anurans in arctic and subarctic tundra regions, in part because it is difficult to survey anurans in these landscapes.
Andersen, David E. +3 more
core +2 more sources
WETLAND OCCUPANCY OF POND-BREEDING AMPHIBIANS IN YOSEMITE NATIONAL PARK, USA [PDF]
We estimated wetland occupancy and population trends for three species of pond-breeding anurans in Yosemite National Park from 2007 – 2011. We used a double survey technique in which two observers independently surveyed each site on the same day.
Fellers, Gary M. +2 more
core +2 more sources
Trade in wild anurans vectors the urodelan pathogen Batrachochytrium salamandrivorans into Europe [PDF]
Pathogen pollution has caused dramatic losses of amphibian diversity on a global scale. The recently emerged chytrid fungus Batrachochytrium salamandrivorans (Bsal) has been hypothesized to have its origin in Asian urodelan populations, from which it may
Martel, An +4 more
core +2 more sources
Evolutionary insights into umami, sweet, and bitter taste receptors in amphibians
Umami and sweet sensations provide animals with important dietary information for detecting and consuming nutrients, whereas bitter sensation helps animals avoid potentially toxic or harmful substances. Enormous progress has been made toward animal sweet/
Huaming Zhong +3 more
doaj +1 more source
Phylogenetic signals indicate the phenotypic similarity of antipredator mechanisms among related species. Herein, we assessed the antipredator mechanisms of the horned frog Proceratophrys laticeps, compiled a database including closely phylogenetically ...
Cássio Zocca +3 more
doaj +1 more source

