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The first gene-encoded amphibian toxin isolated
Researchers in China have discovered the first protein-based toxin in an amphibian -a 60 amino acid neurotoxin found in the skin of a Chinese tree frog. This finding may help shed more light into both the evolution of amphibians and the evolution of poison. view more (2009-08-18)
Disease-impact models may rely on incorrect assumptions
Even when we know how a disease affects individual animals, it is challenging to predict what impact it will have on the whole population, and yet predicting how disease affects a population is a primary concern for wildlife conservation and even public health. view more (2006-04-13)
During exercise, the human brain shifts into high gear on 'alternative energy'
Alternative energy is all the rage in major media headlines, but for the human brain, this is old news. According to a study by researchers from Denmark and The Netherlands published in the October 2008 print issue of The FASEB Journal, the brain, just like muscles, works harder during strenuous exercise and is fueled by lactate, rather than... view more... (2008-10-01)
Lizards shout against a noisy background to get points across
Male Anole lizards signal ownership of their territory by sitting up on a tree trunk, bobbing their heads up and down and extending a colorful throat pouch. view more (2007-02-26)
Tags reveal white sharks have neighborhoods in the north Pacific, say Stanford researchers
The white shark may be the ultimate loner of the ocean, cruising thousands of miles in a solitary trek, but a team of researchers has discovered that the sharks have maintained such a consistent pattern of migration that over tens of thousands of years the white sharks in the northeastern Pacific Ocean have separated themselves into a population... view more... (2009-11-04)
How butterflies got their spots: A 'supergene' controls wing pattern diversity
Butterflies are known to employ some interesting convergent evolutionary tactics to survive-some nonpoisonous species have similar wing patterns to those of noxious species that predators avoid. view more (2006-09-26)
Big vegetarian mammals can play a critical role in maintaining healthy ecosystems, study finds
Removing large herbivorous mammals from the African savanna can cause a dramatic shift in the relative abundance of species throughout the food chain. view more (2007-01-17)
Cornell conservationists propose allowing wild animals to roam parts of North America
If Cornell University researchers and their colleagues have their way, cheetahs, lions, elephants, camels and other large wild animals may soon roam parts of North America. view more (2005-08-18)
Decline in Alaskan sea otters affects bald eagles' diet
Sea otters are known as a keystone species, filling such an important niche in ocean communities that without them, entire ecosystems can collapse. view more (2008-10-03)
Study shows hope for ridding lakes of clawed invader
The rusty crayfish-a voracious, bullying exotic that has visited ecological havoc on numerous Wisconsin lakes-may have finally met its match. view more (2006-08-01)
Study shows parasites outweigh predators
In a study of free-living and parasitic species in three estuaries on the Pacific coast of California and Baja California, a team of researchers from the University of California, Santa Barbara, the United States Geological Survey, and Princeton University has determined that parasite biomass in those habitats exceeds that of top predators, in... view more... (2008-07-24)
Overfishing large sharks impacts entire marine ecosystem, shrinks shellfish supply
Fewer big sharks in the oceans mean that bay scallops and other shellfish may be harder to find at the market, according to an article in the March 30 issue of the journal Science, tying two unlikely links in the food web to the same fate. view more (2007-03-30)
Studies show that rockfish thrive with offshore platforms as their home base
While some observers consider offshore oil and gas platforms to be an eyesore on the horizon, new data shows they are performing a critical function for marine life. view more (2006-06-30)
Persistent Man-made Chemical Pollutants Found in Deep-sea Octopods and Squids
New evidence that chemical contaminants are finding their way into the deep-sea food web has been found in deep-sea squids and octopods, including the strange-looking "vampire squid". These species are food for deep-diving toothed whales and other predators. view more (2008-06-10)
Atlantic snails are increasing dramatically in size, Queen's researcher discovers
A Queen's University biologist has discovered that the shell lengths of northwest Atlantic Ocean snails - an important member of the Atlantic food chain - have increased by 22.6 per cent over the past century. Until now, this significant change in the marine ecosystem has gone unnoticed. view more (2009-03-25)
In spiders, size matters: Small males are more often meals
Female spiders are voracious predators and consume a wide range of prey, which sometimes includes their mates. view more (2008-09-11)
Biodiversity in an agricultural landscape – first day of national Dutch Biodiversity symposium
Agriculture and nature are not happily married (yet). Biodiversity is the victim. In preparation to the large COP6 biodiversity conference of the United Nations – planned for April in the Netherlands – a selection of international scientists will present their results and views. Tomorrow, on Friday March 15 in Wageningen (NL). view more (2002-03-14)
Testosterone turns male juncos into blustery hunks -- and bad dads
The ability to ramp up testosterone production appears to drive male dark-eyed juncos to find and win mates, but it comes with an evolutionary cost. Big fluctuations in testosterone may also cause males to lose interest in parenting their own young, scientists have learned. view more (2007-10-16)
Sunflowers that love heavy metal
Sunflowers take up uranium twice or even three times better than their maize and soybean counterparts, making them a top 'clean crop' for removing toxic metals from the environment. Scientists at the Centre for Pesticides and Environmental Research, Yugoslavia, studied growth and uranium uptake in sunflower, soybean and maize crops. Sunflowers... view more... (2001-04-01)
Largemouth bass vulnerability to being caught by anglers a heritable trait
In an experiment spanning over 20 years, researchers at the University of Illinois have found that vulnerability to being caught by anglers is a heritable trait in largemouth bass. view more (2009-04-15)
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