News tagged with prey
MtDNA tests trace all modern horses back to single ancestor 140,000 years ago
(PhysOrg.com) -- For many years archeologists and other scientists have debated the origins of the domesticated horse. Nailing down a time frame is important because many historians view the relationship between ...
Jan 31, 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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By the light of January's Wolf Moon
(PhysOrg.com) -- A cold-eyed moon rises above Lamar Valley in Yellowstone National Park. It is January. For Native Americans, it is the time of the Wolf Moon.
Jan 11, 2012 |
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Paddlefish sensors tuned to detect signals from zooplankton prey
Neurons fire in a synchronized bursting pattern in response to robust signals indicating nearby food.
Jan 05, 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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New study illustrates the physics behind great white shark attacks on seals
A new study examining the complex and dynamic interactions between white sharks and Cape fur seals in False Bay, South Africa, offers new insights on the physical conditions and biological factors underlying ...
Dec 09, 2011 |
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Fear affects predator-prey relationship: study
(PhysOrg.com) -- Franklin D. Roosevelt famously warned the only thing we have to fear is fear itself. New research from The University of Western Ontario reveals that FDR’s rhetorical flourish also accurately reflects ...
Dec 08, 2011 |
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Changes in krill abundance inferred from antarctic fur seal
It is possible to know a tree from its fruit, but is it possible to know a prey from its predator? The answer is YES with Antarctic krill and Antarctic fur seals. Scientists of the University of ...
Space & Earth / Earth Sciences
Dec 01, 2011 |
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Protecting predator and prey when both are in trouble
When both a predator and its prey are conservationally at risk, it can be difficult to find the right balance of ecosystem management to sustain and protect both.
Nov 09, 2011 |
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Spider is the second most vibration-sensitive creature
(PhysOrg.com) -- A new study in Austria has confirmed that spiders are extremely sensitive to vibrations, and determined they are the second most vibration-sensitive organism, topped only by cockroaches.
Oct 28, 2011 |
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Wolf hunting strategy follows simple rules
(PhysOrg.com) -- A new study of wolves (Canis lupus) has found that communication between pack members and a social hierarchy are not essential features of a successful hunt, and all the wolves have to do ...
Oct 28, 2011 |
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Genes in place: New research shows location matters for evolution
(PhysOrg.com) -- A new paper by researchers at the New England Complex Systems Institute reveals the limitations of evolutionary studies that ignore geography. They show that how individuals are arranged in space, and the ...
Oct 19, 2011 |
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Mental time-travel in birds
(PhysOrg.com) -- Certain types of birds may track army ant swarms using sophisticated memory and the ability to plan for the future.
Oct 14, 2011 |
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96 percent of vertebrates -- including humans -- descended from ancestor with sixth sense
(PhysOrg.com) -- People experience the world through five senses but sharks, paddlefishes and certain other aquatic vertebrates have a sixth sense: They can detect weak electrical fields in the water and use ...
Oct 11, 2011 |
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Dragonflies: The flying aces of the insect world
Next time you see a dragonfly, try to watch it catch its next meal on the go. Good luck!
Oct 04, 2011 |
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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.
