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Latest Predation Stories

2009-12-18 13:11:46

Human activity is increasing the supply of nutrients, such as nitrogen and phosphorus, to stream systems all over the world. The conventional wisdom"”bolstered by earlier research"”has held that these additional nutrients cause an increase in production all along the food chain, from the tiniest organisms up to the largest predators. A long-term, ecosystem-scale study by a team of University of Georgia researchers, however, has thrown this assumption into question. The...

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2009-12-02 12:26:49

A scientist from the University of Salamanca and another from Yale University have shown that the presence of predators affects the behavior of Acanthodactylus beershebensis, a lizard species from the Negev Desert in the Near East. According to the study, these reptiles move less and catch less mobile and different prey if they are under pressure from predators. Many theoretical models had predicted this result, but until now there had been very few experimental trials and none in the case of...

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2009-11-11 09:26:41

Predators with experience of skunks avoid them both because of their black-and-white coloration and their distinctive body shape, according to UC Davis wildlife researcher Jennifer Hunter. The study was published online Oct. 21 in the journal Behavioral Ecology. Hunter wanted to know how predators know a skunk is a skunk. Biologists had assumed that the distinctive black-and-white color scheme was a marker saying, "keep away." Hunter prepared taxidermy mounts of skunks and of gray foxes, an...

2009-10-26 23:34:15

Although most wolves in Yellowstone National Park live to be nearly six years old, their ability to kill prey peaks when they are two to three, according to a study led by Dan MacNulty and recently published online by Ecology Letters. The study will appear in the journal's December print issue. The finding challenges a long-held belief that wolves are successful predators for their entire adult lives. It now appears that like human athletes, they are only at the top of their game for about 25...

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2009-10-23 10:22:56

A Spanish researcher has analyzed the preferences of wolves from the north east of the Iberian Peninsula to demonstrate that, in reality, their favorite prey are roe deer, deer and wild boar, ahead of domestic ruminants (sheep, goats, cows and horses). Wolves (Canis lupus) have been pursued by humans for centuries due to their supposed "addiction" to livestock. However, the study by Isabel Barja, sole author and researcher at the Universidad Aut³noma de Madrid [Autonomous University of...

2009-10-14 15:32:00

WASHINGTON, Oct. 14 /PRNewswire-USNewswire/ -- The United States has reached a settlement with ranchers in a longstanding dispute over livestock trespasses on public lands in Nye and Esmeralda Counties, Nev., the Justice Department and Bureau of Land Management (BLM) announced today. As part of the settlement, Benjamin J. Colvin and Colvin Cattle Company acknowledged past unauthorized grazing on federal government lands and agreed to comply with federal grazing laws and regulations in...

2009-10-02 10:23:13

The catastrophic decline around the world of "apex" predators such as wolves, cougars, lions or sharks has led to a huge increase in smaller "mesopredators" that are causing major economic and ecological disruptions, a new study concludes. The findings, published today in the journal Bioscience, found that in North America all of the largest terrestrial predators have been in decline during the past 200 years while the ranges of 60 percent of mesopredators have expanded. The problem is...

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2009-09-18 02:30:00

A 16-year-old South Carolina girl may hold the record as the state's youngest female to bag an alligator, a state alligator expert said. Cammie Colin, who won one of 1,000 slots in an annual lottery for permission to hunt an alligator, headed out before the sun rose Sunday to hunt her prey in the headwaters of Lake Marion, S. C., The State reported. Hunting alligators at night takes a person who may just be a little more daring than the average person, said Jay Butfiloski, an alligator...

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2009-09-12 14:00:00

An ancient eagle that once ruled the skies above New Zealand appears to have been a predator, and may have fed on human flesh, researchers said Friday. Writing in the Journal of Vertebrate Paleontology, Ken Ashwell of the University of New South Wales in Australia and Paul Scofield of the Canterbury Museum in New Zealand reported that the Haast's eagle was a predatory creature. "This science supports Maori [native New Zealander] mythology of the legendary pouakai or hokioi, a huge bird that...

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2009-09-08 13:42:49

A new study by the Wildlife Conservation Society, U.S. Fish and Wildlife Service, and other groups reveals how oil development in the Artic is impacting some bird populations by providing "subsidized housing" to predators, which nest and den around drilling infrastructure and supplement their diets with garbage "“ and nesting birds. Oil development has attracted populations of opportunistic predators including Arctic fox, ravens, and gulls, which feed on nesting birds. The predators use...


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....

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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...

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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
endocarp
  • The hard inner (usually woody) layer of the pericarp of some fruits (as peaches or plums or cherries or olives) that contains the seed.
This word comes from the Greek 'endon,' in, within, plus the Greek 'kardia,' heart.
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