News tagged with prey species
Escalating arms race: Predatory sea urchins drive evolution
(Phys.org) -- Nature teems with examples of evolutionary arms races between predators and prey, with the predator species gradually evolving a new mode of attack for each defensive adaptation that arises in ...
Apr 17, 2012 |
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A classic model for ecological stability revised, 40 years later
A famous mathematical formula which shook the world of ecology 40 years ago has been revisited and refined by two University of Chicago researchers in the current issue of Nature.
Feb 19, 2012 |
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The winners of mass extinction: With predators gone, prey thrives
In modern ecology, the removal or addition of a predator to an ecosystem can produce dramatic changes in the population of prey species. For the first time, scientists have observed the same dynamics in the ...
May 02, 2011 |
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Bats: What sounds good doesn't always taste good
Bats use a combination of cues in their hunting sequence - capture, handling and consumption - to decide which prey to attack, catch and consume and which ones they are better off leaving alone or dropping ...
May 21, 2012 |
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Task force recommends reducing global harvest of 'forage fish'
A task force that conducted one of the most comprehensive analyses of global "forage fish" populations issued its report this week, which strongly recommends implementing more conservative catch limits for these crucial prey ...
Apr 03, 2012 |
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Rapid venom evolution in pit vipers may be defensive
Research published recently in PLoS One delivers new insight about rapid toxin evolution in venomous snakes: pitvipers such as rattlesnakes may be engaged in an arms race with opossums, a group of snake-eating American marsup ...
Jul 18, 2011 |
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Playing Dead Increases Survival Rate at the Expense of Active Neighbors
A study published in the Proceeding of The Royal Society B entitled "Tonically Immobilized Selfish Prey Can Survive By Sacrificing Other", authored by researchers at Okayama University in Japan point out de ...
Apr 30, 2009 |
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Carnivorous plants rely on the services and wastes of a symbiotic ant for nutrition
In a mutualistic relationship between an ant species and a carnivorous plant, the ants contribute to both prey capture and prey digestion of their host-plant and provide significant amounts of nutrients derived from their ...
May 09, 2012 |
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Winged predators seek certain trees when foraging for caterpillars
Location matters for birds on the hunt for caterpillars, according to researchers at UC Irvine and Wesleyan University. Findings suggest that chickadees and others zero in on the type of tree as much as the characteristics ...
Jan 26, 2012 |
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Study finds some desert birds less affected by wildfires and climate change
A new Baylor University study has found that some bird species in the desert southwest are less affected, and in some cases positively influenced, by widespread fire through their habitat. In fact, the Baylor researchers ...
Jul 19, 2011 |
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NOAA scientists find killer whales in Antarctic waters prefer weddell seals over other prey
NOAA's Fisheries Service scientists studying the cooperative hunting behavior of killer whales in Antarctic waters observed the animals favoring one type of seal over all other available food sources, according ...
Mar 30, 2011 |
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Food forensics: DNA links habitat quality to bat diet
All night long, bats swoop over our landscape consuming insects, but they do this in secret, hidden from our view. Until recently, scientists have been unable to bring their ecosystem out of the dark but thanks to new genetic ...
Mar 03, 2011 |
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Tigers and polar bears are highly vulnerable to environmental change
Large predators are much more vulnerable than smaller species to environmental changes, such as over-hunting and habitat change, because they have to work so hard to find their next meal, according to a new ...
Nov 24, 2010 |
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Climate change driving Michigan mammals north
(PhysOrg.com) -- Some Michigan mammal species are rapidly expanding their ranges northward, apparently in response to climate change, a new study shows. In the process, these historically southern species ...
May 12, 2009 |
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Scientists examine effect of wolves' absence and see an ecosystem 'unraveling'
No trace remains of the wolves whose howls ricocheted for millennia down the lush valleys of the Olympic Peninsula. Settlers and trappers killed them all in little more than three decades.
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Jan 29, 2009 |
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