Mountain range uplift, river formation and other events that occurred 30 million years ago explain the emergence of new species of the arachnid in the biome's southernmost portion, according to a Brazilian study.
In what likely is the first study on the evolution of dietary preferences across the animal kingdom, UA researchers report several unexpected discoveries, including that the first animal likely was a carnivore and that humans, along with other omnivores, belong to a rare breed.
The function of the visual photopigment rhodopsin and its action in the retina to facilitate vision is well understood. However, there remain questions about other biological functions of this family of proteins (opsins) and this has ramifications for our understanding of several evolutionary pathways. Now, an international research team led by the University of Göttingen has shown there are other functions of opsin outside vision and this provides insights into how the eye evolved. Their research was published in Current Biology.
Researchers at the University of Cincinnati found that Charles Darwin's famous finches defy what has long been considered a key to evolutionary success: genetic diversity. The study of the finches of the Galapagos Islands could change the way conservation biologists think about species with naturally fragmented populations to understand their potential for extinction.
Healthy mice study real-time gut colonization and discovered a pivotal role for bacterial sex in the evolution of the mammalian microbiome. This discovery constitutes a paradigm shift and opens the possibility to design new therapies.
Drosophila melanogaster develops stable long-term memory for its body size and reach through motion parallax while walking.
At an unprecedented scale, researchers have now catalogued the array of surveillance tools that plants use to detect disease-causing microbes across an entire species.
A single enzyme found in early single-cell life forms could explain why oxygen levels in the atmosphere remained low for two billion years during the Proterozoic eon, preventing life colonizing land, suggests a UCL-led study.
Invasive mosquitoes at the northern limit of their current range are surviving conditions that are colder than those in their native territory. This new evidence of rapid local adaptation could have implications for efforts to control the spread of this invasive species.
New research on one of the oldest and most complete fossil primate skulls from South America shows instead that the pattern of brain evolution in this group was far more checkered. The study, published today in the journal Science Advances and led by researchers from the American Museum of Natural History, the Chinese Academy of Sciences, and the University of California Santa Barbara, suggests that the brain enlarged repeatedly and independently over the course of anthropoid history.