Tag: "lions" at biology news
Gray wolves maintain the food chain in winter
...d carrion shortages on scavengers. Unlike mountain lions
and grizzly bears, wolves abandon their prey (usually elk or moose) once sated, leaving much-coveted leftovers for ravens, eagles, coyotes, bears, and other scavengers. Altogether, their modeling studies show that shorter winters without wolves will ...
Elephant seal pups suffer from ocean warming
... year cycles such as those caused by El Nio. Sea lions
and fur seals that feed near their rookeries at the surface of the ocean are known to be very sensitive to water temperature changes, as an increase in water temperature usually causes their prey to migrate to cooler areas, depleting local food resou...
Scientists journey to southern Africa to unravel the secret world of elephant communication
...le--a freshwater spring where elephants, giraffes, lions
and many other species gather day and night to dri... but young elephants are susceptible to attacks by lions
and hyenas. When a predator appears, older members of the herd emit intense warning calls that promp...
Vietnam war technology could aid elephant conservation
...hants and other large mammals, including giraffes, lions
and humans, using a geophone buried near a path leading to a watering hole in Namibia's Etosha National Park. Because of the differences in the size and frequency of animals' footfalls, the researchers could tell with 82% accuracy when elephants were...
Is that lizard a basilisk? How Harry Potter sparks interest in the reptile house
... the Paignton zebra enclosure 'ought to have a few lions
or cheetahs in it'. Others wondered whether what they saw were 'pretend animals' when they failed to move. Dr Lindahl-Elliot said: "Zoos could help visitors to become more critical media users by inviting them to consider film or TV representations ...
Researchers propose measures to curb lion attacks in Tanzania
MINNEAPOLIS / ST. PAUL-- Since 1990 lions
have killed more than 563 Tanzanians, including nu...om their beds. Consequently, increasing numbers of lions
are being killed by local people. In an effort to find a way to protect both people and lions, Unive...
Proposal would allow wild animals to roam North America
...) and African ( Loxodonta africana ) elephants and lions
( Panthera leo ). "Obviously, gaining public acceptance is going to be a huge issue, especially when you talk about reintroducing predators," said the paper's lead author, Josh Donlan, a graduate student in Cornell's Department of Ecology and Evoluti...
Seal rookeries could provide a reliable food source for endangered California condors, study finds
...accumulate in its body. For example, seals and sea lions
are more enriched in heavy nitrogen-15 and carbon-...-century mule deer, feral pigs, whales, seals, sea lions
and domesticated cattle. "The California Department of Transportation even agreed to go around and s...
Getting an evolutionary handle on life after reproduction
...randmother effect." Though many mammals, including lions
and baboons, rear dependent young and operate within complex social groups, studies have found no evidence of a granny effect, and females mostly live just long enough to care for their last born. For nonsocial animals that spawn independent young, e...
Report lists top 20 most-vulnerable African carnivores
...e report say that while such well-known species as lions
enjoy a relative wealth of conservation and resear...d famous for its variety of carnivore species from lions
to hyenas," said Dr. Luke Hunter a co-author, who also runs WCS's Global Carnivore Program. "These ...
High-tech tags on marine animals yield valuable data for biologists and oceanographers
...eater seals in the Southern Ocean. California sea lions
are proving to be an excellent platform for monito...awater and how that changes with depth. As the sea lions
travel along the coast diving for food, their tags transmit data back to the researchers via satelli...
The rising tide of ocean plagues: How humans are changing the dynamics of disease
...ts to Sea Lions & Humans Scientists studying sea lions
in California are seeing an increase in the number...aw domoic acid poisoning in 1998, when over 70 sea lions
died in one weekend. "We thought at the time that it was linked to the fact that it was an El Nino ...
Marine mammals are on the frontline of failing ocean health
...In the past 15 years, 17% of dead and stranded sea lions
in California have been diagnosed with a urogenita...sing the cancer. "We see the herpes virus in sea lions
without cancer, so the virus alone isn't enough to cause cancer in sea lions, which is why we think ...
...ens all the time in the animal kingdom. A pride of lions
cooperates to hunt down a gazelle. A herd of elephants band together to protect themselves from predators. But there may not be much thinking going on behind this kind of cooperation. It could be that by each animal wanting the same thing and working...
Lion mane linked to climate
...your new warmer climate! It's long been known that lions
with long, full manes get the girls. Now, an innov... retard heat loss as would a scarf or fur hat. Zoo lions
in hot climates adapt with smaller, thinner manes. Those in northern zoos never overheat so no reduc...
Republic of Congo announces two massive protected areas
...rge mammals. Until recently the region contained lions
unusual to the Congo Basin though poaching may have wiped out the population. The Savanna landscape still supports such rare species as Grimm's duiker (a small antelope species), side-striped jackal, and rare birds including Denham's bustard. Ins...
Groundbreaking study by Field Museum scientists explains mane variation in lions
...cording to the overall findings of the study, wild lions
generally develop manes in accordance with local c...t Africa, climate is determined by elevation. Thus lions
with the most profuse manes occur at the upper limit of their altitudinal range, while similar aged ...
A plan for reintroducing megafauna to North America
...iant tortoises and wild horses, then moving toward lions
and elephants, the authors provide a number of case studies for "Pleistocene Rewilding" and argue such introductions would contribute biological, economic, and cultural benefits to North America. The authors acknowledge that there are substantial ris...
Pendulums, predators and prey: The ecology of coupled oscillations
...ogy. "We know that any predator-prey system, say lions
and zebras for example, shows oscillations," said ...gy and Evolutionary Biology. "If there are lots of lions
preying on zebras, numbers of zebras decline; then because zebras are scarce, lions
starve and their...
Extreme life, marine style highlights 2006 ocean census
...n 20 tagged species - from sharks and squid to sea lions
and albatross. "Each Census expedition reveals new marvels of the ocean and with the return of each vessel it is increasingly clear that many more discoveries await marine explorers for years to come," says Fred Grassle, Chair of the Census Scien...