Fighting flies: Biologists identify sex-specific brain cells in male flies that promote aggression
(Phys.org) —When one encounters a group of fruit flies invading their kitchen, it probably appears as if the whole group is vying for a sweet treat. But a closer look would likely reveal the male flies ...
Natural born killers: Chimpanzee violence is an evolutionary strategy
Man's nearest relatives kill each other in order to eliminate rivals and gain better access to territory, mates, food or other resources—not because human activities have made them more aggressive.
Wild sparrow study traces social behaviors in the field to specific gene
A unique study of the white-throated sparrow has identified a biological pathway connecting variation in the birds' aggression and parenting behaviors in the wild to variation in their genome.
Discovery helps show how breast cancer spreads
Researchers at Washington University School of Medicine in St. Louis have discovered why breast cancer patients with dense breasts are more likely than others to develop aggressive tumors that spread. The ...
Wasps use ancient aggression genes to create social groups
Aggression-causing genes appeared early in animal evolution and have maintained their roles for millions of years and across many species, even though animal aggression today varies widely from territorial ...
Quantum dots deliver vitamin D to tumors for possible inflammatory breast cancer treatment
The shortened daylight of a Maine winter may make for long, dark nights – but it has shone a light on a novel experimental approach to fighting inflammatory breast cancer (IBC), an especially deadly form of breast cancer.
Real angry birds 'flip the bird' before a fight
Male sparrows are capable of fighting to the death. But a new study shows that they often wave their wings wildly first in an attempt to avoid a dangerous brawl.
Researchers find correlation between face shape and procreation rates and rank in male soldiers
Researchers boost insect aggression by altering brain metabolism
Scientists report they can crank up insect aggression simply by interfering with a basic metabolic pathway in the insect brain. Their study, of fruit flies and honey bees, shows a direct, causal link between ...
In bonobos, attractive females are more likely to win conflicts against males
Female social dominance over males is rare among mammal species. Bonobos, one of our closest living relatives, are known for females holding relatively high social statuses when compared to males; though ...
What makes an aggressive dog, and how you can spot one
(HealthDay)—You see a Rottweiler standing next to a poodle and a Chihuahua. Which dog is most likely to bite you?
Signalers vs. strong silent types: Sparrows exude personalities during fights
Like humans, some song sparrows are more effusive than others, at least when it comes to defending their territories. New findings from the University of Washington show that consistent individual differences ...
Who are the aggressive stars of CCTV?
A computer program can analyze CCTV images and spot aggressive human behaviour nine times out of ten, according to research published in the International Journal of Computational Vision and Robotics. The research is an important ...
World's dangerous neighborhoods produce aggressive children
Children around the world who grow up in dangerous neighborhoods exhibit more aggressive behavior, says a new Duke University-led study that is the first to examine the topic across a wide range of countries.