News tagged with predator
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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Dinosaurs with killer claws yield new theory about flight
(PhysOrg.com) -- New research from Montana State University's Museum of the Rockies has revealed how dinosaurs like Velociraptor and Deinonychus used their famous killer claws, leading to a new hypothesis on ...
Other Sciences / Archaeology & Fossils
Dec 14, 2011 |
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Predatory fish have large guts to help them through famine
(PhysOrg.com) -- A new study by scientists in the US has solved the mystery of why predatory fish have a far greater digestive capacity than they actually need. The study suggests the reason is that the extra-large ...
Jul 08, 2011 |
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Two ground-nesting birds eavesdrop on chipmunk chatter to find safe neighborhoods
(PhysOrg.com) -- Ground-nesting birds face an uphill struggle to successfully rear their young, with many eggs and chicks falling prey to predators.
Jun 23, 2011 |
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Reindeer see a weird and wonderful world of ultraviolet light
Researchers have discovered that the ultraviolet (UV) light that causes the temporary but painful condition of snow blindness in humans is life-saving for reindeer in the arctic.
May 26, 2011 |
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Fossil of giant ancient sea predator discovered (w/ video)
Paleontologists have discovered that a group of remarkable ancient sea creatures existed for much longer and grew to much larger sizes than previously thought, thanks to extraordinarily well-preserved fossils ...
Other Sciences / Archaeology & Fossils
May 25, 2011 |
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The sea dragons bounce back
(PhysOrg.com) -- The evolution of ichthyosaurs, important marine predators of the age of dinosaurs, was hit hard by a mass extinction event 200 million years ago, according to a new study from the University ...
Other Sciences / Archaeology & Fossils
May 04, 2011 |
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Caterpillars aren't so bird brained after all
(PhysOrg.com) -- Caterpillars that masquerade as twigs to avoid becoming a bird's dinner are actually using clever behavioural strategies to outwit their predators, according to a new study.
Apr 04, 2011 |
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New predator 'dawn runner' discovered in early dinosaur graveyard
(PhysOrg.com) -- A team of paleontologists and geologists from Argentina and the United States on Jan. 13 announced the discovery of a lanky dinosaur that roamed South America in search of prey as the age ...
Other Sciences / Archaeology & Fossils
Jan 13, 2011 |
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Neuroscience of instinct: How animals overcome fear to obtain food (w/ Video)
(PhysOrg.com) -- When crossing a street, we look to the left and right for cars and stay put on the sidewalk if we see a car close enough and traveling fast enough to hit us before we're able to reach the ...
Medicine & Health / Neuroscience
Nov 29, 2010 |
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Bees see super color at super speed
(PhysOrg.com) -- Bees see the world almost five times faster than humans, according to new research from scientists at Queen Mary, University of London.
Mar 17, 2010 |
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Why chameleon tongues work in the cold (w/ Video)
(PhysOrg.com) -- In cold weather a chameleon’s metabolism slows down, but its tongue continues to work quickly to capture prey. A new study has found out why: the tongue does not rely on direct muscle contractions, ...
Mar 10, 2010 |
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The small insect with a big heart: the 'giving' aphids endangered by their selflessness
One of the founding principles of Darwin's theory is that biological evolution has been shaped by the survival of the fittest. Things, however, are not always that simple as researchers from Royal Holloway, ...
Feb 03, 2010 |
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Frog embryos associate the smell of predators with danger
(PhysOrg.com) -- A new study in the US and Canada has found that frogs can learn to associate the smell of predators with danger, even as embryos.
Nov 03, 2009 |
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Predation
In ecology, predation describes a biological interaction where a predator (an organism that is hunting) feeds on its prey, (the organism that is attacked). Predators may or may not kill their prey prior to feeding on them, but the act of predation always results in the death of the prey. The other main category of consumption is detritivory, the consumption of dead organic material (detritus). It can at times be difficult to separate the two feeding behaviors, for example where parasitic species prey on a host organism and then lay their eggs on it for their offspring to feed on its decaying corpse. The key characteristic of predation however is the predator's direct impact on the prey population. On the other hand, detritivores simply eat what is available and have no direct impact on the "donor" organism(s).
Selective pressures imposed on one another has led to an evolutionary arms race between prey and predator, resulting in various antipredator adaptations.
For more information about Predation, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
