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Latest Predation Stories

2011-07-25 15:46:05

What do a herd of gazelles and a fluffy mass of clouds have in common? A mathematical formula that describes the population dynamics of such prey animals as gazelles and their predators has been used to model the relationship between cloud systems, rain and tiny floating particles called aerosols. This model may help climate scientists understand, among other things, how human-produced aerosols affect rainfall patterns. The research recently appeared in the Proceedings of the National Academy...

2011-07-15 09:21:00

Impacts include increases in infectious diseases and invasive species, as well as changes in soil, water, vegetation, and the atmosphere STONY BROOK, N.Y., July 15, 2011 /PRNewswire-USNewswire/ -- "Trophic Downgrading of Planet Earth," a review paper that will be published on July 15, 2011, in the journal Science, concludes that the decline of large predators and herbivores in all regions of the world is causing substantial changes to Earth's terrestrial, freshwater, and marine...

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2011-07-15 07:40:00

The worldwide decline of top predators, or "consumers", such as wolves, sharks and lions, is threatening to drive other species to extinction, an international team of 24 scientists reported on Thursday. The research shows for the first time the critical importance that large animals have within the world's ecosystem. "Until recently, large apex consumers were ubiquitous across the globe and had been for millions of years. The loss of these animals may be humankind's most pervasive influence...

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2011-06-24 11:03:54

Biologists worldwide subscribe to the healthy herds hypothesis, the idea that predators can keep packs of prey healthy by removing the weak and the sick. This reduces the chance disease will wipe out the whole herd, but could it be that predators can also make prey populations more susceptible to other predators or even parasites? Biologists at the Georgia Institute of Technology have discovered at least one animal whose defenses against a predator make it a good target for one opportunistic...

2011-06-15 22:19:57

A long-term study verifies multi-paddock grazing improves vegetation, soil health and animal production relative to continuous grazing in large-scale ranches, according to Texas AgriLife Research scientists. The study measured the impacts on vegetation and soils achieved by commercial ranchers who adapted management practices in response to changing circumstances to achieve desirable outcomes, said Dr. Richard Teague, AgriLife Research rangeland ecology and management scientist in Vernon. At...

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2011-05-26 06:20:00

Ancient sea creatures, that were the largest predators for millions of years, grew even larger and survived much longer than previously thought, according to paleontologists who discovered well-preserved fossils in Morocco. The creatures, known as anomalocaridids, ranged in size from 2 to as much as 6 feet long. They had soft-jointed bodies and toothy maws with spiny limbs in front to catch their prey, scientists described in a paper published by the journal Nature. "They were really at the...

2011-05-24 06:05:00

ALBUQUERQUE, N.M., May 24, 2011 /PRNewswire/ -- Ranchers manage the forces of mother nature every day, but recent extreme drought conditions are posing new challenges to anyone working with land management on ranches in the "Dust Bowl" states of the Midwest and Southwest. According to the U.S. Drought Monitor, parts of Texas covered by extreme drought have tripled to 40 percent in recent months. Officials say it's a similar situation in Oklahoma where the four months following Thanksgiving...

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2011-05-20 09:42:06

New findings of researchers from Tel-Aviv University show that predator-prey interactions between ground beetles of the genus Epomis and amphibians are much more complex than expected. The study was published in the open access journal Zoo Keys. "Amphibians are typical insect predators and their diet may include adult beetles, ground beetles in particular. The recently filmed successful attacks of the beetles on toads and frogs brought new insights on the amphibian-insect interactions, and...

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2011-05-17 10:48:21

Team from MBL, West Point uses new imaging technology to 'see' camouflaged marine animals in the eyes of their predators How could a colorblind animal know how to change its skin color to blend into its surroundings? And what will the animal's predator "see," looking at its prey before and after it hides? These provocative questions are addressed in article published today by a collaborative team from the Marine Biological Laboratory (MBL) in Woods Hole, Mass., and the U.S. Military Academy...

2011-05-16 16:17:01

An ecosystem is like a great organism in that the species in it behave in a manner similar to the manner in which cells behave within the human body: the group forms a permanent entity, although the entities that form it are constantly being substituted. This is the conclusion that can be drawn from a theoretical study carried out by researchers at the Universidad Carlos III de Madrid (UC3M "“ Carlos III University of Madrid). These scientists have developed a mathematical model that...


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
bibliopole
  • A bookseller; now, especially, a dealer in rare and curious books.
This word comes from a Greek phrase meaning 'book seller.'
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