As the climate changed over the past million years, areas of paramo around Andean peaks in Colombia grew and contracted, giving rise to species unique to this habitat. Today paramos continue to shrink, putting these species at risk.
The study of University of Jyväskylä and University of Vienna shows that voles are able to determine the difference between the smell of a predator, the smell of a non-stressed vole, and the smell of a vole who encountered a predator.
Fossils of a giant new species from the long-extinct group of sea creatures called trilobites have been found on Kangaroo Island, South Australia.
Attempts to treat anorexia as a mental illness have largely failed, claim Swedish scientists. The group insist that eating disorders be considered just that -- disordered eating, not mental disorder. The proof, they say, is in the eating.
Using advanced technologies to explore the inner workings of bacteria, biologists at UC San Diego have provided the first example of cargo within bacteriophage cells transiting along treadmill-like structures. The discovery demonstrates that bacteria have more in common with sophisticated human cells than previously believed. The type of phage studied in the new paper is the kind that one day could be used in new treatments to cure a variety of infections.
Free fingers have many obvious advantages on land, such as in locomotion and grasping, while webbed fingers are typical of aquatic or gliding animals. But both amphibians and amniotes -- which include mammals, reptiles, and birds -- can have webbed digits. In new research from Japan, scientists show that during embryo development, some animal species detect the presence of atmospheric oxygen, which triggers removal of interdigital webbing. Their research appears June 13, 2019 in the journal Developmental Cell.
Ants adjust their social interactions to accommodate changes in population density, according to researchers at Penn State and Georgetown University. The findings suggest that ant colonies are capable of maintaining their sophisticated social organization despite potentially drastic changes in their environments.
Six different color morphs of the elusive Asiatic golden cat have been discovered in Northeast India -- with the findings being hailed as 'an evolutionary puzzle' -- as the world's greatest number of different colored wild cat species in one area are reported.
Scientists at The University of Queensland have upended biologists' century-old understanding of the evolutionary history of animals. Using new technology to investigate how multi-celled animals developed, their findings revealed a surprising truth.
A team of scientists at Arizona State University is presenting a new hypothesis to explain why there are differences between women and men when it comes to human diseases. Called 'The Pregnancy Compensation Hypothesis,' the theory sets the stage for novel research avenues focused specifically on treating autoimmune diseases and cancer.