Sentences with phrase «spotted hyenas»

About Blog Michigan State University students in the Holekamp Lab blog about their experiences in Kenya, research on spotted hyenas and adventures in the field.

Related stories on TreeHugger: • Tree - dwelling gray foxes decorate with skeletons • Spotted hyenas are smart, social and ruled by females • These wondrous sea wolves swim for miles and live off the watery wilds

Effects of trophy hunting leftovers on the ranging behaviour of large carnivores: A case study on spotted hyenas.

They found that cohesive clustering of the kind where an individual bonds with friends of friends, something scientists call «triadic closure,» was the most consistent factor influencing the long - term dynamics of the social structure of spotted hyenas.

Science: Hyena society is founded on friendship Headline News Global News: Hyenas prefer to buddy up with «friends of friends» Sci-News.com: Scientists puzzled by «social network» of spotted hyenas

Researchers collected more than 55,000 observations of social interactions of spotted hyenas over a 20 year period in Kenya, making this one of the largest to date of social network dynamics in any non-human species.

It's not yet clear whether symbiotic microbes led to the split between striped and spotted hyenas, but Theis said scientists now better understand the broad influence that microbes can have.

In 2016, scientists published the results of a study that simulated how zebras appear to lions and spotted hyenas in different lighting conditions and from different distances.

First, the specific 1993/94 strain that was so lethal to lions and spotted hyenas apparently died out, as it was not found in the ecosystem after 1999.

The laboratory experiments also showed that the amino acid combination in the CDV - H protein typically found in domestic dog strains (519R / 549Y) was particularly good at invading cells with domestic dog receptors but far less efficient at entering cells with non-canid receptors, effectively making domestic dog strains less able to infect lions and spotted hyenas if they are exposed to them.

In 1993/1994, an unexpectedly fatal and widespread CDV epidemic spread through lions and spotted hyenas in the Serengeti National Park (NP) in northwestern Tanzania.

The long - running debate about why just one of several canine distemper virus (CDV) outbreaks in the Serengeti in Tanzania during the past 25 years was fatal for lions and spotted hyenas has been resolved.

In the two decades following the epidemic, wild canids died following CDV infection but fatal CDV was not observed in lions or spotted hyenas anymore, even though high prevalence of serum antibodies against CDV in some years indicated outbreaks of asymptomatic exposure to the virus in lions and hyenas.

Nearly 90 per cent of male spotted hyenas (Crocuta crocuta) leave their birth clan and disperse to pastures new, but until now it has never been clear what drives them away.

Chimpanzees travel together, capuchins cooperate in fights, and spotted hyenas cooperate in hunting, but the common ways that leaders promote those collective actions has remained mysterious, Smith and her colleagues say.

Indeed, after the rook paper appeared, Christine Drea of Duke University in Durham, North Carolina, published a study showing that spotted hyenas can cooperate on a similar task (Animal Behaviour, DOI: 10.1016 / j.anbehav.2009.06.030).

As many as 47,000 spotted hyenas live in sub-Saharan Africa.

Additional findings from Monell revealed that other exclusively carnivorous mammals, including sea lions and spotted hyenas, also have lost the ability to detect sweet taste.

Spotted hyenas are high on the list of suspects as the final link in the chain because they mix with lions at a kill.

Although genital mimicry is rare in the animal world, female spotted hyenas have sham scrotums and pseudo penises so convincing that even experts have a hard time distinguishing males from females.

SPOTTED hyenas can drastically alter the sex ratio of their young from one litter to the next, say two American biologists.

To their suprise, whereas rabies proved virulent to bat - eared foxes and white - tailed mongooses, for example, spotted hyenas in many cases eliminated the virus from their bodies or else apparently carried low viral loads and experienced no ill effects.

Holekamp and Smale say that the ability of spotted hyenas to manipulate the sex ratio of their offspring makes evolutionary sense.

The spotted hyenas (Crocuta crocuta) have hierarchical societies similar to those of primates; lions (Panthera leo) live in egalitarian prides with as many as 21 members; whereas tigers (P. tigris) and leopards (P. pardus) lead more solitary lives, except when females have young or when males and females meet to mate.

So Dinets and Eligulashvili were surprised when they observed striped hyenas — the little known, mostly solitary relatives of the better - known spotted hyenas of Africa — in the middle of grey wolf packs, moving together through a maze of canyons in the southern part of the Negev desert.

According to a report in the current issue of the Proceedings of the National Academy of Sciences, the spotted hyena can carry the virus without developing symptoms.

The spotted hyena is doing well enough to be considered of «Least Concern» by IUCN, but its population is also declining, primarily due to habitat loss.

Carnivores in the Serengeti infected with CDV.Top left: bat - eared fox; Top right: African wild dog; Bottom left: spotted hyena; Bottom right: African lion.

It reduced the lion population by approximately 30 % and killed many spotted hyena juveniles.

I joined Dr. Kay Holekamp's lab, which focuses on the ontogenetic development, physiological substrates, and evolution of mammalian behavior, using the free - living spotted hyena as a model species.

The spotted hyena (Crocuta crocuta) as a model system for study of the evolution of intelligence.

Spotted hyena cubs of high - ranking mothers have a lower probability of infection with and are less likely to die from canine distemper virus (CDV) than cubs of low - ranking mothers.

And the arrival of the African spotted hyena into Eurasia matches the extinction of the giant short - facet hyena about 800,000 years ago.

Similar protective associations have also been documented in moose in living in Yellowstone, that give birth near roads to keep predatory traffic - averse brown bears away from their offspring, and mountain nyala in Ethiopia that use human shields against their spotted hyena predators.

One example is the spotted hyena, which is living in Africa today, but which appeared also in Europe during the glacial period.

The spotted hyena and the striped hyena live side by side on the African savanna.

Biologists assume, for example, that the spotted hyena is now found in savannas and arid regions of Africa and the Middle East because it is perfectly adapted to their specific conditions, such as high temperatures and aridity.

The researchers used a new, more comprehensive method than those used in earlier studies, a type of mathematical modeling typically found in sociology, to arrive at their findings about the social world of the spotted hyena.

But a certain four - legged predator, the spotted hyena, seems to know the benefits of this type of social bonding instinctively, according to a new study from the National Institute for Mathematical and Biological Synthesis (NIMBioS) that considers the structural factors affecting the social network of these animals.

Just like a spotted hyena would be.

And indeed, we find a spotted hyena with three pups, one of which is very small and completely black, the other two are bigger, already have their spots and are very cheeky.

The Big 5 Madikwe Game Reserve, consisting of reclaimed farm land, is famous for the ambitious re-stocking program «Operation Phoenix» and is now home to the big five and is famous for its wild dog and spotted hyena.

Cheetah, Hippo, Crocodile, spotted Hyena, Giraffe, Wildebeest, Zebra and numerous species of antelope are also resident in the reserve.

Not exact matches

Another great place is Hyena Cart Spots Corner.