Variations in sex steroid gene expression can predict aggressive behaviors
An Indiana University biologist has shown that natural variation in measures of the brain's ability to process steroid hormones predicts functional variation in aggressive behavior.
Factors behind past lemur species extinctions put surviving species in 'ecological retreat'
New research out today on the long-term impact of species extinctions suggests that the disappearance of one species does not necessarily allow remaining competitor species to thrive by filling now-empty niches.
Not a one-way street: Evolution shapes environment of Connecticut lakes
Environmental change is the selective force that preserves adaptive traits in organisms and is a primary driver of evolution. However, it is less well known that evolutionary change in organisms also trigger ...
Mini-mammoths lived on Crete: scientists (w/ Video)
(Phys.org) -- The smallest mammoth known to have ever lived has been identified by Natural History Museum scientists, and is reported in the journal Proceedings of the Royal Society B today.
Evolution in an island, the secret for a longer life
ICP researchers published today in the Proceedings of the Royal Society B one of the first fossil-based evidences supporting the evolutionary theory of ageing, which predicts that species evolving in low mo ...
Scientists show how social interaction and teamwork lead to human intelligence
Scientists have discovered proof that the evolution of intelligence and larger brain sizes can be driven by cooperation and teamwork, shedding new light on the origins of what it means to be human. The study appears online ...
Ecologists explore new explanation for plant productivity
(Phys.org) -- Current ecological thought suggests the more diverse a plant community is, the more productive it is. But scientists dont fully understand why this is so.
Study shows adaptive capacity of reef corals to climate change may be widespread
A new study by scientists at the University of Miami's Rosenstiel School of Marine & Atmospheric Science suggests that many species of reef-building corals may be able to adapt to warming waters by relying ...
Birds found to put more energy into current brood when ill
Male dolphins build complex teams for social success
(PhysOrg.com) -- Male dolphins not only form a series of complex alliances based on their close relatives and friends but these alliances also form a shifting mosaic of overlapping geographic ranges within ...
Testosterone low, but responsive to competition, in Amazonian tribe
(PhysOrg.com) -- It's a rough life for the Tsimane, an isolated indigenous group in Bolivia. They make a living by hunting and foraging in forests, fishing in streams and clearing land by hand to grow crops. ...
Entomologist team discovers reason behind passion-vine butterfly congregation tendencies
Specialization for underwater hearing by the tympanic middle ear of the turtle
A group of biologists from Denmark and the US led by Jakob Christensen-Dalsgaard, University of Southern Denmark, and Catherine Carr, University of Maryland, have shown that the turtle ear is specialized for underwater hearing. ...
Contact with 'rivals' changes male behavior
Males consistently change their mating behaviour depending on whether they have spent time with other males before mating, according to new findings by scientists at the University of East Anglia (UEA).