Neuroscientists from the Salk Institute and UC San Diego have discovered that at least six types of mammals--from mice to cats--distinguish odors in roughly the same way, using circuitry in the brain that's evolutionarily preserved across species.
Described in 1981, the genus Biswamoyopterus is regarded as the most mysterious and rarest amongst all flying squirrels. It comprises two species, each known from a single specimen. Recent research by Chinese and Australian scientists described a third species found to inhabit low-altitude forests in Yunnan Province, China. By publishing their discovery in the open-access journal ZooKeys, the research team aims to promote further study and conservation of these squirrels.
A new review article appearing in the journal Nature Reviews Microbiology highlights the evolution and ecology of plant viruses. Arvind Varsani, a researcher at ASU's Biodesign Institute joins an international team to explore many details of viral dynamics. They describe the subtle interplay between three components of the viral infection process, the virus itself, the plant cell hosts infected by the virus and the vectors that act as go-betweens -- an intricate system evolving over some 450 million years.
Two newly discovered organisms point to the existence of an ancient organism that resembled a tiny version of the lumbering, human-eating science fiction plants known as 'triffids,' according to research in Nature.
Gene identified in worms controls how resources are allocated for stress resilience, longevity and fertility.
Ant-acacia plants attract ants by offering specialized food and hollow thorns in which the ants live, while the ant colony in turn defends its acacia against herbivores. This mutualistic relationship only occurs in older plants. New findings from University of Pennsylvania plant biologists, identify the genetic pathway that appears to regulate the timing of the acacia's ant-sustaining arsenal.
A new study in Evolution Letters finds that different bird species in the same challenging environment -- the highly saline ecosystem of tidal marshes along ocean shores -- were able to evolve unique species-specific ways to address the same problem.
Since the emergence of molecular genetics, scientists have tried to isolate haploid mammalian cells. Haploid cells are a powerful genetic tool to analyse gene function. In the past decade, a number of researchers finally succeeded in developing haploid cell line cultures. However, these cell lines are unstable and have a tendency for diploidisation. Now, researchers at the CNIO have identified chemical compounds that increase the stability of mammalian haploid cell lines.
ponds around the world, tiny creatures known as Daphnia play an essential role in freshwater ecology. Daphnia, a type of planktonic crustacean, are the primary consumers of algae and are an important food source for fish and other aquatic life.
A collaborative research project carried out under the auspices of the GeoBio-Center at Ludwig-Maximilians-Universitaet (LMU) in Munich has developed an integrative approach to the classification of fossil cichlids, and identified the oldest known member of the Tribe Oreochromini.