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2011-04-18 11:49:56

Fiddler crabs would all end up as dinner for seagulls were it not for their sophisticated threat detection system, vision scientists have found. Researchers in The Vision Centre have announced an important advance in understanding how simple animals distinguish between threats and non-threats by looking for a combination of visual cues. "These crabs can't distinguish shapes and must constantly compete with birds that are bigger and have sharper sight," says Dr Jan Hemmi from the ARC Centre of...

2011-04-09 04:19:29

For those old enough to remember Mutual of Omaha's "Wild Kingdom" television series, the dynamics of predator-prey relationships seemed clear enough: predators thinned out prey populations, which enabled a smaller, but stronger, population to survive and reproduce. However, a new paper by University of Notre Dame biologist Gary Belovsky appearing in the prestigious journal Ecology Letters suggests that predator-prey relationships are much more complex than originally thought. The paper arose...

cb017ad3697b95318061b7af688b637a
2011-04-04 21:23:12

Caterpillars that masquerade as twigs to avoid becoming a bird's dinner are actually using clever behavioral strategies to outwit their predators, according to a new study.Researchers at the universities of Exeter, Liverpool, Liverpool Hope and Glasgow have shown that when it comes to the art of camouflage, things are never quite the way they seem.The study, published online today in the journal PNAS, reveals that twig-mimicking caterpillars choose their location to maximize their chances of...

2011-03-10 23:28:16

A new study by scientists from Maryland and Colorado using American kestrels, a surrogate test species for raptorial birds, suggests that they are at greater risk from poisoning from the rodenticide diphacinone than previous believed. The research, published in Environmental Toxicology and Chemistry, considers the threat posed by diphacinone as its usage increases following restrictions on the use of similar pesticides. "Recent restrictions on the use of some rodenticides may result in...

2011-03-03 23:25:47

U of C research shows that human activity displaces predators more than prey A new paper by University of Calgary researchers, published today in PLoS ONE, demonstrates the edge given to prey in the "space race" by human activity. The research was conducted by two University of Calgary students, a University of Calgary Post-Doctoral Fellow and two University of Calgary professors from the Faculty of Environmental Design, Department of Geomatics in the Schulich School of Engineering and the...

2011-03-02 20:53:53

Fire, cattle and even prairie dogs all could play a role in sustaining the biodiversity of the western Great Plains, according to a U.S. Department of Agriculture (USDA) researcher. As large grazers, cattle now perform the historical role of buffalo on the Great Plains. Ecologist David Augustine and his colleagues-in collaboration with state, federal, and university researchers-have results from several studies over the past 13 years showing that fire, cattle and prairie dogs together...

2011-02-08 23:11:36

University of British Columbia researchers have uncovered the unique survival mechanisms of a marine organism that may be tiny, but in some ways has surpassed sharks in its predatory efficiency. Published today in the journal Nature Communications, the research team's portrait of the microscopic dinoflagellate Oxyrrhis marina reveals a predator so efficient that it has even acquired a gene from its prey. NB: A microscopic photo of Oxyrrhis marina is available at...

2011-01-31 09:00:00

HAMDEN, Conn., Jan. 31, 2011 /PRNewswire/ -- During the long and harsh winter months, it's not unusual to see deer and other hungry animals come out of the woods and into the yards of suburban homeowners. According to Shake-Away, Inc., makers of the only EPA-registered line of all-natural predator-scent animal repellents, winter is prime time for deer and other animals to feast on trees, bushes and other valuable plantings. Deer specifically damage trees by eating the bark, especially...

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2011-01-31 09:38:31

Research by the University of Exeter has revealed that ants have a big impact on their local environment as a result of their activity as 'ecosystem engineers' and predators. The study, published in the Journal of Animal Ecology, found that ants have two distinct effects on their local environment. Firstly, through moving of soil by nest building activity and by collecting food they affect the level of nutrients in the soil. This can indirectly impact the local populations of many animal...

eadd705247397ed22b065fbb573128fe1
2010-11-25 08:24:11

Large predators are much more vulnerable than smaller species to environmental changes, such as over-hunting and habitat change, because they have to work so hard to find their next meal, according to a new study. Scientists matched studies of predator populations to the abundance of their prey and found that the largest species, such as lions, tigers or polar bears, had much greater declines in population due to diminishing food supplies than smaller species, such as weasels or badgers. 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
omphalos
  • The navel or umbilicus.
  • In Greek archaeology: A central boss, as on a shield, a bowl, etc.
  • A sacred stone in the temple of Apollo at Delphi, believed by the Greeks to mark the 'navel' or exact center-point of the earth.
'Omphalos' comes from the ancient Greek.
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