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Latest Predation Stories

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2010-11-11 06:35:00

There may be many similarities between the importance of large predators in marine and terrestrial environments, researchers concluded in a recent study, which examined the interactions between wolves and elk in the United States, as well as sharks and dugongs in Australia. In each case, the major predators help control the populations of their prey, scientists said. But through what's been called the "ecology of fear" they also affect the behavior of the prey, with ripple impacts on other...

2010-10-15 01:17:16

The food chain - the number of organisms that feed on each other "” in the world's streams and rivers depends more upon the size of the stream and whether the waterways flood or run dry than the amount of available food resources, Yale University and Arizona State University (ASU) researchers report online in the Oct. 14 issue of the journal Science Express. The findings suggest that large predators in river systems will be threatened by increased variability in water flow induced by...

7086f5fad8ab174e39512cbae6549e5c1
2010-09-17 08:44:45

Tool use is so rare in the animal kingdom that it was once believed to be a uniquely human trait. While it is now known that some non-human animal species can use tools for foraging, the rarity of this behavior remains a puzzle. It is generally assumed that tool use played a key role in human evolution, so understanding this behavior's ecological context, and its evolutionary roots, is of major scientific interest. A project led by researchers from the Universities of Oxford and Exeter...

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2010-09-01 13:40:29

Previous research has claimed that the reintroduction of wolves to Yellowstone National Park in 1995 is helping restore quaking aspen in risky areas where wolves prowl. But apparently elk hungry for winter food had a different idea. They did not know they were supposed to be responding to a "landscape of fear." According to a study set to be published this week in Ecology, a journal of the Ecological Society of America, the fear of wolf predation may not be discouraging elk from eating aspen...

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2010-08-26 12:40:00

The evolutionary history of the Thaumoctopus mimicus lineage reveals the steps it took to become a master of disguise Paul the Octopus"”the eight-legged oracle who made international headlines with his amazingly accurate football forecasting"”isn't the only talented cephalopod in the sea. The Indonesian mimic octopus, which can impersonate flatfish and sea snakes to dupe potential predators, may well give Paul a run for his money when it comes to "see-worthy" skills. By creatively...

2010-08-02 17:01:27

Mate selection, foraging and defense mechanisms explored at ESA's Annual Meeting In this time of global change, understanding the basics of animal behavior and environmental interactions is just as important as predicting and planning for widespread impacts. Ecological scientists will assess the fundamentals of animal behavior"”such as plant toxin detection in bushbaby foraging"”and current adaptations to global change"”like defense mechanisms of native lizards to red...

2010-07-16 14:14:46

In the battle between insect predators and their prey, chemical signals called kairomones serve as an early-warning system. Pervasively emitted by the predators, the compounds are detected by their prey, and can even trigger adaptations, such a change in body size or armor, that help protect the prey. But as widespread as kairomones are in the insect world, their chemical identity has remained largely unknown. New research by Rockefeller University's Joel E. Cohen and colleagues at the...

2010-07-09 08:00:00

STONY BROOK, N.Y., July 9 /PRNewswire-USNewswire/ -- A compendium on trophic cascades and how they operate in the world's major ecosystems has been published for the first time. The term "trophic cascades" refers to the follow-on effects of top predator removal from an ecosystem, and, until now, there has not been a comprehensive synthesis of this phenomenon. Evidence accumulated in this volume indicates that trophic cascades operate in nearly all ecosystems around the world, both at sea...

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2010-07-01 09:08:18

A new analysis of the extinction of woolly mammoths and other large mammals more than 10,000 years ago suggests that they may have fallen victim to the same type of "trophic cascade" of ecosystem disruption that scientists say is being caused today by the global decline of predators such as wolves, cougars, and sharks. In each case the cascading events were originally begun by human disruption of ecosystems, a new study concludes, but around 15,000 years ago the problem was not the loss of a...

2010-06-08 07:05:00

ANN ARBOR, Mich., June 8 /PRNewswire/ -- Penrose Press is proud to announce the release of the experimental beta-test version of a new board game - Serengeti. The Serengeti Game is the first game to employ the 'predator-prey' game mechanics developed by Ray Lauzzana in 2009. This mechanism controls movement across a node network connected by directional vectors. The movement may only pass along the direction of the vectors at a cost indicated on the nodes. The game simulates the...


Latest Predation Reference Libraries

Thomson’s Gazelle, Eudorcas thomsonii
2012-06-17 19:56:59

Thomson’s gazelle (Eudorcas thomsonii) is also known as a “tommie” and is one of the most well-known gazelle species. Named after Joseph Thomson, Thomson’s gazelle is native to Africa where it is the most commonly found gazelle. It is sometimes considered a subspecies of the red-fronted gazelle, and was previously in the genus Gazella, in the subgenus Eudorcas. Eudorcas eventually became a distinct genus, classifying some species of gazelle within their own genus. Thomson’s...

Grant’s Gazelle, Nanger granti
2012-06-15 12:08:26

Grant’s gazelle (Nanger granti) is native to Africa. Its northern range of Tanzania extends south to Ethiopia and the Sudan, and from the coast of Kenya to Lake Victoria. It prefers habitats within shrub lands and grass plains, but can also be found in regions that are more arid. In Swahili, Grant’s gazelle is called Swala Granti. It was placed within the Nanger subgenus of the genus Gazella, before Nanger became a separate genus. Grant’s gazelle holds five recognized subspecies. The...

Great Kiskadee, Pitangus sulphuratus
2009-06-16 18:41:00

The Great Kiskadee (Pitangus sulphuratus) is a species of passerine tyrant flycatcher found from southern Texas and Mexico south to Uruguay and central Argentina. They are also found on Trinidad. They have been introduced to Bermuda in 1957, and Tobago in 1970. The adult Great Kiskadee is 8.7 inches long and weighs 2.2 ounces. It has a black head with a white eye stripe and concealed yellow crown stripe. The upperparts are brown. The wings and tail are brown and have reddish-brown fringes....

42_5280cb9fe6f5b8c364061c7fde0d4bee
2007-08-23 02:51:24

The West Caucasian Tur (Capra caucasica), is a goat antelope found only in the western half of the Caucasus Mountain Range. They thrive in rough mountainous terrain between 2625 and 13120 feet in elevation. West Caucasian Turs are nocturnal, eating in the open at night and sheltering during the day. Females live in herds of around ten individuals, while males are solitary. The Tur stands up to 39.4 inches at the shoulder and weighs about 143 pounds. West Caucasian Turs have large but...

42_f64c530cc6c234a5e535dec0d1260745
2007-08-14 04:24:53

The Wild Goat (Capra aegagrus), is a common species of goat, with a distribution ranging from Europe and Asia Minor to central Asia and the Middle East. In the wild, these goats live in flocks of up to 500 individuals. Male wild goats are solitary and go through a period called a rut, where they are ready to mate. During the rut old males drive younger males from the maternal herds. The gestation period averages 170 days. Females usually give birth to one kid. Kids can follow the mother...

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Word of the Day
omadhaun
  • A fool; a simpleton: a term of abuse common in Ireland and to a less extent in the Gaelic-speaking parts of Scotland.
This word is partly Irish in origin.