News tagged with prey
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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Wolves are able to follow a human's gaze
Following others' gaze direction is an important source of information that helps to detect prey or predators, to notice important social events within one's social group and to predict the next actions of ...
Feb 23, 2011 |
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Jellyfish replacing fish in over-exploited areas
(PhysOrg.com) -- Over-fished commercial stocks of plankton-eating fish have been replaced in several locations by jellyfish species. This appears to be something of a paradox because fish move quickly and ...
Sep 16, 2011 |
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Acid test: Study reveals both losers and winners of CO2-induced ocean acidification
(PhysOrg.com) -- As the world’s seawater becomes more acidic due to rising atmospheric carbon dioxide, some shelled marine creatures may actually become bigger and stronger, according to a new study.
Space & Earth / Earth Sciences
Dec 01, 2009 |
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How the seahorse might have got its shape
(PhysOrg.com) -- The shape of the seahorse has long baffled marine scientists, but new research suggests the seahorse’s unique shape may have evolved to allow it to catch its food when it was further ...
Jan 27, 2011 |
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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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Wild cat mimics monkey calls
In a fascinating example of vocal mimicry, researchers from the Wildlife Conservation Society (WCS) and UFAM (Federal University of Amazonas) have documented a wild cat species imitating the call of its intended ...
Jul 08, 2010 |
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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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Predation by foxes aided by Earth's magnetic field
(PhysOrg.com) -- Scientists in the Czech Republic and Germany studying the hunting behavior of red foxes have discovered the foxes are more successful if they jump on their prey towards the north.
Jan 14, 2011 |
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Snakes may be in decline worldwide: study
Distinct populations of snake species on three continents have crashed over the last decade, raising fears that the reptiles may be in global decline, according to a study published Wednesday.
Jun 08, 2010 |
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Men better at distance vision due to hunter-gatherer past: study
Men are better at seeing things in the distance due to their hunter-gatherer past chasing animals, while women are better focusing on things at close range, a British study said Thursday.
Medicine & Health / Psychology & Psychiatry
Jul 30, 2009 |
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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 trap snaps shut: Researchers isolate the substance that causes venus flytraps to close
The Venus flytrap is a carnivorous plant luring insect prey with drops of liquid. The trap snaps shut like a steel jaw when an insect touches one of the very fine hairs within. The prey is caught – digestion ...
Nov 08, 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 eyes have it for perfect predator
(PhysOrg.com) -- The most striking feature of jumping spiders is their arsenal of big eyes. In contrast to web-building spiders, they rely on their excellent vision to actively hunt and catch their insect ...
Jul 09, 2010 |
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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.
