Researchers identify a critical growth factor that stimulates sperm stem...
Researchers at the University of Pennsylvania School of Veterinary Medicine and Pennsylvania State University have identified for the first time a specific "niche factor" in the mouse testes called...
View ArticleFor male weta, big is better
(PhysOrg.com) -- For a male tree weta, size really is everything. In six of the seven species in New Zealand the males all sport a distinctly large head, and the bigger the head, the better the chance...
View ArticleStudent researchers help discover world's smallest frog
When two Cornell undergraduates and a recent graduate went on a field research trip to Papua New Guinea in 2008, little did they know it would lead to entries in the Guinness Book of World Records and...
View ArticleNoisy environments make young songbirds shuffle their tunes
iPod owners aren't the only ones who frequently shuffle their favorite tunes. Baby songbirds do it, too, a new study shows.
View ArticleAdolescent male chimps in large community strive to be alphas
(Phys.org)—An Ohio University anthropologist reports the first observation of dominance relationships among adolescent male chimpanzees, which he attributes to the composition of their community.
View ArticleThe old grey whistle test
(Phys.org)—Dolphins mimic those closest to them as a way of getting in touch, according to the latest research.
View ArticleIn chimpanzees, hunting and meat-eating is a man's business
(Phys.org) —Observations of hunting and meat eating in our closest living relatives, chimpanzees, suggest that regular inclusion of meat in the diet is not a characteristic unique to Homo. Wild...
View ArticleBlack bears: Here, gone, and back again
A new study from the Wildlife Conservation Society (WCS) and the Nevada Department of Wildlife (NDOW) has pieced together the last 150 years of history for one of the state's most interesting denizens:...
View ArticleMonkeys found to conform to social norms
Human tendency to adopt the behaviour of others when on their home territory has been found in non-human primates. Researchers at the University of St Andrews observed 'striking' fickleness in male...
View ArticleBoss crocs: Rethinking crocodile management
(Phys.org) —University of Queensland ecologists have released research that will result in better crocodiles management and intervention. Dr Hamish Campbell, from UQ's School of Biological Sciences,...
View ArticleSuperdaddy Pyros keeps Pyrenees bear numbers up
The number of bears roaming the Pyrenees remained stable at a minimum of 22 last year, thanks largely to the continued virility of Pyros, the undisputed daddy of the colony.
View ArticleAngry bird's unique wing weapon revealed
(Phys.org) —The solitaire bird was a giant flightless pigeon that, like its closest relative the dodo, became extinct soon after European explorers settled in its habitat. It had a strange knob-like...
View ArticleOrangutans plan their future route and communicate it to others, researchers...
Male orangutans plan their travel route up to one day in advance and communicate it to other members of their species. In order to attract females and repel male rivals, they call in the direction in...
View ArticleAncient European bear had unusually large penis bone
(Phys.org) —Researchers working at Spain's Batallones-3 dig site in the area of Cerro de los Batallones have unearthed five baculum (os penis) that once belonged to five now extinct examples of a...
View ArticleLion numbers could improve with new sustainable hunting quotas
Researchers have devised a simple and reliable way to set sustainable quotas for hunting lions, to help lion populations to grow, in a new study.
View ArticleNew archaeological find could shed light on late-Roman Britain
A unique archaeological find uncovered near the site of a Roman villa in Dorset could help to shed light on the rural elite of late-Roman Britain.
View ArticleBoy moms more social in chimpanzees
Nearly four decades of observations of Tanzanian chimpanzees has revealed that the mothers of sons are about 25 percent more social than the mothers of daughters. Boy moms were found to spend about two...
View ArticleAdult sex ratio linked to gender chromosomes
(Phys.org)—A team of researchers with members from institutions in Hungary, the U.S. and the U.K. has found a link between the adult sex ratio (ASR) and gender chromosome differences. In their paper...
View ArticleAdult male gorillas call more during feeding than females, juveniles
Gorillas in the wild frequently 'sing' and 'hum' during feeding and adult males call more than their younger or female counterparts, according to a study published February 24th, 2016 in the...
View ArticleShark research produces the unexpected
In a surprise result, James Cook University scientists have found female blacktip reef sharks and their young stay close to shore over long time periods, with adult males only appearing during the...
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