Sentences with phrase «wild populations at»

The team also compared the response of flies in cages (which experienced the local temperature and humidity, but not interactions with other species) with the abundance of D. birchii in wild populations at the same sites along mountain gradients (where other species were also present), to test whether interactions among species affect responses to climate change.

After 18 weeks, this would have increased to around 100 %, and the infection would then spread to other wild populations at a rate of around 2 km per week.

Not exact matches

Researchers at the University of York mapped population data for 62 wild bee species sprinkled across the United Kingdom along with neonicotinoid treatment in local oilseed rape (Brassica napus) fields over 18 years.

But if you look at distemper — canine distemper and feline distemper had been decimating lion populations for years and years and years, and it's from domestic animals infecting wild populations.

A study by a team of archaeologists based at the University of Copenhagen published today in the Royal Society journal Open Science documents that the region now known as the Black Desert in eastern Jordan could sustain a population of wild sheep.

«Our recovery could be stalled, at best, by failing to be able to insert a more diverse gene pool into the existing wild population.»

There is a need to find the origin of the wild populations, so that the most effective preventive measures can be effectuated,» says Eli Rinde, senior research scientist at NIVA.

Over the past few decades, a small international clan of scientists, alarmed by the sudden decline of corals, have created underwater nurseries aimed at «replanting» corals to buttress wild populations.

Our work shows that farm fish are as potent at the gamete level as wild fish, and if farm escapes can revive their spawning behaviour by a period in the wild, clearly pose a significant threat of hybridisation with wild populations.»

The forum brought together many of the world's top disease ecologists, wildlife biologists, immunologists, virologists, vaccinologists, epidemiologists, wildlife veterinarians and pathologists, and policy experts to explore whether it would be appropriate and feasible to develop approaches to canine distemper vaccination to protect at - risk wild carnivore populations.

After years of political controversy, bureaucratic turmoil, and fluctuating populations, around eighty Mexican gray wolves roam the Southwest today, more than at any time since the government reintroduced them to the wild in 1998.

«Brownsea's wild red squirrel population has been living with leprosy for at least four decades,» says Angela Cott, National Trust general manager for Brownsea Island.

Trade in cactus species occurs at national and international levels and is often illegal, with 86 % of threatened cacti used in horticulture taken from wild populations.

A new study led by the Centre for GeoGenetics at the University of Copenhagen, in collaboration with scientists from 11 international universities, reports that a significant part of the genetic variation in modern domesticated horses could be attributed to interbreeding with the descendants of a now extinct population of wild horses.

They borrowed an analytical technique used in agricultural breeding (but never before applied to the study of wild populations) to determine that squirrel babies born earlier in the spring thrive and reproduce at a higher rate than squirrels born later.

The disease, which has killed at least a third of the wild population since the mid-1990s, had now infected devils across more than half the island.

Estimates put the wild turkey population before Columbus arrived at some 10 million, though no one was counting.

But Jonathan Pruitt, at the University of Pittsburgh, and Charles Goodnight, at the University of Vermont, have been studying generations of these Anelosimus spiders — and have gathered the first - ever experimental evidence that group selection can fundamentally shape collective traits in wild populations.

Hu argues that although the sturgeon's population can be sustained by captive breeding and restocking the Yangtze, banning TPT at this stage would do little to undo the damage in the wild.

Michaela Hau, an evolutionary physiologist at the Max Planck Institute for Ornithology in Germany, says that the new study is «immensely valuable» because it was carried out with a large number of baboons who lived in the wild rather than a captive population, which might be suffering from different kinds of stresses due to captivity, social isolation, or variable food quality.

«These associations support the hypothesis that Nosema escaped into wild populations from heavily infected commercial colonies, at least during the earlier years of bumble bee domestication in the U.S.,» she said.

A dip in the wild boar population at one point was traced to a disease outbreak unrelated to radiation exposure.

To try to tease out the relationship between social rank, stress, and health, Altmann teamed up with Elizabeth Archie, a behavioral ecologist at the University of Notre Dame in South Bend, Indiana, and Susan Alberts, a behavioral ecologist at Duke University in Durham, North Carolina, to analyze data collected from 1982 through 2009 in the Amboseli region of Kenya, home to a large population of wild baboons.

Teleki calculates that for every infant that survives a year at the final overseas destination, 10 chimpanzees die in transit or on arrival, or are killed in the wild by poachers — small wonder that conservationists are alarmed at the impact continued commercial exploitation will have on wild populations whose habitats are being progressively destroyed.

Without firm data on the scale of international trade in individual species, scientists can only guess at its impact on wild populations.

Back then, the West was still wild: The population of Taft, Montana, one of the three towns threatened by the Big Burn, consisted mostly of gamblers and prostitutes — «five for every man,» as one official noted at the time.

Wild barramundi populations are likely to be at risk under ocean acidification, a new University of Adelaide study has found.

Christopher Clark, a bioacoustician at Cornell University in Ithaca, New York, agrees: «This is some of the first information about how dolphins are communicating in natural, wild populations.»

Reasoning that previous studies may have missed infected bonobo populations, a team led by Beatrice Hahn, MD, a professor of Microbiology in the Perelman School of Medicine at the University of Pennsylvania, conducted a more extensive survey, increasing both the number and places they sampled wild bonobo populations.

While populations of wild animals have halved, only about 1 to 2 per cent of species have been lost so far — at least in well - studied groups such as mammals and birds.

Half of the U.S. population lives in areas that were under a heat wave warning or advisory at some point this summer, she said, adding that was just one example from a year of wild weather.

«The rate at which our water resources on the planet are increasing is zero,» he says, «while our population grows at a wild rate.»

Over 14 years, from 1971 to 1985, they released at least 90 orphaned and displaced apes into the surrounding wild population.

Led by Thomas Cucchi of National Center for Scientific Research in Paris, France, and Lior Weissbrod of the University of Haifa in Israel, the study set out to explain large swings in the ratio of house mice to wild mice populations found during excavations of different prehistoric periods at an ancient Natufian hunter - gatherer site in the Jordan Valley of Israel.

«A fully annotated salmon genome will provide important information about the impact of cultured fish escapees on wild populations, about preservation of populations that are at risk, about strategies for fighting pathogens, and about environmental sustainability issues,» says ICSASG chair Dr. Steinar Bergseth at the Research Council of Norway.

Even monarchs that survive to adulthood can still carry and spread infections, placing already reduced populations of wild monarchs at greater risk.»

At Chernobyl, populations of wild boar, elk, roe deer, and wolves increased significantly in the decade after the accident.

The threat this poses to monarch populations was underscored by Dr. Sonia Altizer, a professor at the University of Georgia and leading researcher on monarch diseases: «Disease can build up in farmed monarchs, which can then spread to wild butterflies.

The company says they can be effective at controlling pest populations: Altered male mosquitoes are released into the wild to mate with females.

The research presented in this video aims at understanding the cultures of wild chimpanzee populations in several African countries and how they differ from each other.

There are fewer than 250 California condors left in the wild, but species populations are increasing thanks in part to captive breeding programs at American zoos.

Biologists at the Ash Meadows Fish Conservation Facility, less than a mile from Devils Hole, have successfully established a reserve pupfish population that is now reproducing on its own in a 100,000 - gallon refuge tank designed to replicate the species» home in the wild, right down to its shape and temperature.

Drive homing occurred at high efficiency (> 90 %) in all four species, strongly suggesting that refined versions may be capable of altering entire wild populations.

The evidence against neonicotinoids now exists in key bee brain cells involved in learning and memory, in whole bees, entire colonies and now at the level of whole populations of wild bees.

He is Director of Genetics at the San Diego Zoo Institute for Conservation Research and oversees research efforts in cell culture and cryobanking, cytogenetics, population genetics, conservation breeding, evolution and systematics, and applications of genomics technologies to conservation efforts for managed and wild populations of threatened and endangered species.

Strigamia maritima adult centipede from a wild population collected from the shoreline at Brora, northern Scotland.

You can see koalas at Dreamworld on the Gold Coast, but the city council has won a planning battle to preserve their wild population too.

As the alleged evidence that feral cats are a major threat to wild bird populations evaporates, ailurophobes have amplified claims that free - roaming cats are to blame for outbreaks of the parasitic protozoan infection Toxoplasma gondii that were first found to afflict California sea otters in 2002,» causing about 17 % of identified deaths, and have killed at least eight Hawaiian monk seals in 2015 alone.

We acknowledge however, that rare and exceptional circumstances may arise where the overall health and welfare of a wild animal population are at risk (i.e. fatal infectious disease).

The colony population is barely holding at 3 adult unspayed females, 1 spayed, 7 currently unneutered males and 4 very wild babies.