Sentences with phrase «wild populations as»

He was present when the first wolves were released back into the wild in the late 1980s and helped support the wild population as it grew to its peak in the 2000s.

Not exact matches

«It is my desire and my purpose to further the education of the people of Texas and elsewhere in wildlife conservation, in the knowledge of the breeding and living habits of our wild creatures and in the relationship of wildlife to domesticated livestock on our ranches and farms; to afford students and others interested in wildlife betterment and propagation and in the raising of wildlife along with domesticated animals a place for research and an opportunity for the study thereof; and to develop scientifically methods of increasing the wildlife population of the state and nation for the benefit of future generations... who may not have the opportunity to know and appreciate our wildlife, as I have, unless methods of increasing and conserving our wildlife are scientifically developed.

That goes for both wild bees that forage on oilseed rape, and those that don't — though populations of known foragers were three times as likely to disappear.

In the next stage of the project we planned to broaden our interests and include markers that were able to distinguish whether a live animal had been taken from the wild or from a captive - bred population, so we were also looking for population, family, and paternity type markers as well.

Another option is to create what's called an immunizing reversal drive in a kind of offense - as - defense move that would overwrite the gene drive and also arm the wild population against it.

In other words, introducing it into a wild population of mosquitoes would achieve the same result as placing a group of brown - eyed humans into a blue - eyed population: gradually, fewer children would be born with the recessive, blue - eyed gene.

According to the team of University of Copenhagen archaeologists, who led the excavations, the discovery is further evidence that the region often seen as a «marginal zone» was capable of supporting a variety of resources, including a population of wild sheep, 14,500 years ago.

Gene drives spreading through wild populations would not respect international boundaries, so they might run afoul of international treaties, such as the Cartagena Protocol on Biosafety that governs cross-border movement of genetically engineered organisms.

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.

NCCs spread through the embryo as it develops, and directly or indirectly affect a range of other functions, from the adrenal gland, which controls the fear response, to pigmentation, which can differ between domesticated and wild populations.

In the field results of a study by Brianna Lam, a graduate student in the J.M.U. Department of Biology, published in the journal Biological Conservation in 2009 (as well results published by Vredenburg and Harris in 2008 in Abstracts of the General Meeting of the American Society for Microbiology), revealed that wild mountain yellow - legged frog populations in the Sierras differed greatly in their amount of cutaneous J. lividum.

As conservationists work to recover endangered species populations, taking individuals that are maintained and protected under human care and reintroducing them into the wild, it becomes apparent that there is a great deal to learn about the science of species recovery.

The individuals in the wild population today are, on average, as related as siblings, Fredrickson says.

It did not begin to seriously discuss the risks associated with using the approach to engineer genes that could quickly spread through wild populations — known as gene drives — until after experiments demonstrating the concept in fruit flies had been published in a peer - reviewed journal (V. M. Gantz & E. Bier Science 348,442 — 444; 2015).

Wild populations quickly declined as European settlers moved into the area.

In their paper, they highlighted the need for more monitoring and enforcement, as well as research to better understand the impact of trade on wild plant populations and the actors involved in illegal trade.

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.»

«Large - scale conservation strategies such as Panthera's Jaguar Corridor Initiative, which are instrumental to protect broadly distributed species such as jaguars, maintain their connectivity, and by doing so to ensure their long - term survival, need to incorporate genetic monitoring of wild populations to fully understand how these species respond to environmental changes and increasing levels of human impacts,» Wultsch said.

But others suggest that the health of some of the region's salmon populations — such as bountiful pink salmon off of Oregon and Washington and still thriving Alaskan runs — shows that with proper management we may be able to retain lively populations of both wild salmon and fishers.

As colony collapse disorder and other maladies continue to devastate honeybee populations, researchers are turning their attention to alternative pollinators — the thousands of native bee species throughout the country — and are looking for ways to make croplands more attractive to these wild bees.

Salmon farms were already known to weaken wild populations by exposing them to lice infestations, interbreeding with escaped farmed fish, and contaminants such as antibiotics, pesticides, and disinfectants.

But by the 1990s, white - tailed deer populations in parks had swelled to such size that many species of native wildflowers such as trillium and lilies largely disappeared, replaced by wild ginger and exotic species such as garlic mustard and Japanese stiltgrass, plants not favored by deer.

This approach is ill suited to horses as the only surviving population of wild horses has experienced a massive demographic decline in the 20th century.

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.

«This particular Wolbachia strain is not spreading into the wild mosquito population as we had hoped,» says lead researcher Scott O'Neill of Monash University in Clayton, Australia.

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.

Engineered gene drives, which have the potential to spread desirable genes throughout wild populations or to suppress harmful species, have received a lot of recent attention because of their potential to control organisms, such as mosquitoes that carry diseases such as Zika virus, malaria and dengue fever.

Mosquitoes that carry the dengue virus have been engineered to cause crashes in wild populations, and could soon be used in the US as well

If they can't, they won't be able to outcompete wild populations, and the insects wouldn't fly as a malaria control scheme.

In wild populations, TL correlates with life - history traits such as lifespan and survival [9,10].

As of 2005, a cooperative venture between the Zoological Society of London and Mongolian Scientists has resulted in a free - ranging population of 248 animals in the wild.

As global populations of domestic bee pollinators decline, it is of utmost importance for us to understand what factors attract wild pollinators such as hoverflies to flowers, and how these preferences differ in the face of environmental changAs global populations of domestic bee pollinators decline, it is of utmost importance for us to understand what factors attract wild pollinators such as hoverflies to flowers, and how these preferences differ in the face of environmental changas hoverflies to flowers, and how these preferences differ in the face of environmental change.

It suggests that the early hunter - gatherer settlements transformed ecological interactions and food webs, allowing house mice that benefited from human settlements to out - compete wild mice and establish themselves as the dominant population.

As their intake of displaced orang - utans increases, and as suitable habitat for reintroductions declines, there have been suggestions that they hybridize Bornean orang - utan subspecies — either in isolated, «mixed» populations, or within existing wild populationAs their intake of displaced orang - utans increases, and as suitable habitat for reintroductions declines, there have been suggestions that they hybridize Bornean orang - utan subspecies — either in isolated, «mixed» populations, or within existing wild populationas suitable habitat for reintroductions declines, there have been suggestions that they hybridize Bornean orang - utan subspecies — either in isolated, «mixed» populations, or within existing wild populations.

Unsustainable hunting for consumption and trade of wild meat (also known as bushmeat) by humans represents a significant extinction threat to wild terrestrial mammal populations, perhaps most notably in parts of Asia, Africa and South America [4 — 6].

As global populations of domestic bee pollinators decline, it is of utmost importance for us to understand the factors that attract wild pollinators such as hoverflies to flowers, and how these preferences differ in the face of environmental changAs global populations of domestic bee pollinators decline, it is of utmost importance for us to understand the factors that attract wild pollinators such as hoverflies to flowers, and how these preferences differ in the face of environmental changas hoverflies to flowers, and how these preferences differ in the face of environmental change.

The present findings are derived from studies using CD4KO mice and thus, raise the question as to whether the CD4 + T cell - independent immune mechanisms in CD4 KO mice differ from those involved in corneal allograft rejection in wild - type mice whose CD4 + T cells population have been depleted with monoclonal antibodies.

They provide control on populations of small mammals and birds, such as beaver, geese and wild turkeys, and can help to provide stability in the composition and numbers of general wildlife populations (Voigt and Berg 1999, Gompper 2002).

The hope is that the method could be used to engineer populations of insects in the wild, with the goal of reducing mosquito - borne diseases such as malaria or dengue fever, or controlling agricultural pests, such as those that transmit citrus greening disease.

The new technology, known as a gene drive, is genetic engineering on an entirely new scale: It makes it possible not just to modify organisms in the laboratory, but to edit the genes of entire populations in the wild.

As a result, understanding changes in population size for social species — several of which, such as African wild dogs and southern resident killer whales, are endangered — requires understanding of what goes on within groups and how individuals fare when they strike out on their owAs a result, understanding changes in population size for social species — several of which, such as African wild dogs and southern resident killer whales, are endangered — requires understanding of what goes on within groups and how individuals fare when they strike out on their owas African wild dogs and southern resident killer whales, are endangered — requires understanding of what goes on within groups and how individuals fare when they strike out on their own.

Because gene drives could rapidly propagate novel DNA through an entire population in the wild, they could be used, proponents say, to eradicate marauders such as the cane toads overrunning Australia.

Arizona authorities have long opposed the release of captive wolf families into the wild, even though that is the most reliable means of bringing in more genetically diverse animals to ensure the survival of the wild population; currently, nearly all the wolves are related to each other as if they were siblings.

The complex viromes of different human as well as wild and domesticated animal populations are also characterized to allow future changes associated with disease outbreak to be rapidly identified.

One involves engineering reproductive isolation (speciation) between populations that can otherwise interbreed, so as to limit gene flow; a second involves creating genetic methods that can, reversibly, drive populations of invasive species and / or vectors of disease to local extinction; a third involves creating genetic methods that can drive — in ways that are easily reversible — the spread of beneficial genes into wild insect populations so as to prevent the spread of vector - borne disease.

In the 19th Century, as American's urban population grew and the demand for wild meat increased, thousands of men became full - time pigeon hunters.

Many remnant populations of animals in the wild and in captive breeding programs are facing what is called an «extinction vortex,» as inbreeding forces them into an accelerating loss - of - fitness spiral.

«Mental illness is still extremely stigmatized,» he says, «thanks in part to television shows that portray this population as dangerous, in need of supervision, and / or wild and irresponsible.

The conservation status of sockeye populations in Canada is under review by Fisheries and Oceans Canada as part of its Wild Salmon Policy strategy to standardize monitoring of wild salmon staWild Salmon Policy strategy to standardize monitoring of wild salmon stawild salmon status.

Although Ōkunoshima has a dark history of being Japan's secret chemical weapons production site during World War II, it has been reborn as a tourist attraction thanks to its huge population of wild rabbits.