Contact Information:

Media Contact

Amy Blakely
ablakely@utk.edu
865-974-5034

Twitter: UTKnoxville

http://www.tennessee.edu




Kredyty mieszkaniowe Kredyty mieszkaniowe

Sprawdź aktualny ranking najlepszych kredytów mieszkaniowych w Polsce - atrakcyjne kredytowanie nieruchomości.

PRESS-NEWS.org - Press Release Distribution
FREE PRESS RELEASES DISTRIBUTION
RSS - Press News Release
Add Press Release

Ancient hybridization key to domestic dog's origin, wolf conservation efforts


2015-09-01
(Press-News.org) KNOXVILLE--The ancestry of man's best friend may be more complicated than its furry coat and soulful eyes betray. Understanding the evolutionary history of the domesticated dog may ultimately help protect endangered wolves, according to a study from the University of Tennessee, Knoxville.

Vladimir Dinets, research assistant professor of psychology, has published an overview examining the confusing and often misunderstood system used to classify dogs and related animals such as wolves and jackals. He has proposed a logical and scientifically sound classification scheme to help make sense of all the contradictory claims. The study appears in the Vavilov Journal of Genetics and Breeding. Dinets compiled his overview by reviewing existing studies about dog classifications.

"The study shows how complex and surprising can be the evolutionary history of familiar animals we think we know perfectly well," he said.

The relationships between dogs, wolves and jackals are complicated and controversial, Dinets noted. Scientific studies and popular literature contain countless alternative ideas on their composition and the number of their species, both of which can be difficult to track.

Dinets' overview shows that domestic dogs are descendants of two interbred species: a small extinct wild dog of Asia and the grey wolf. Different breeds have different proportions of wolf blood, and that can explain a lot about their personalities and behavior.

There are four to five wild species of Canis in North America, according to the overview. In addition to the well-known grey wolf and coyote, there is a secondary wild population of the domestic dog known as the Carolina dog, plus a few populations of hybrid origin with different proportions of wolf and coyote genes. Two of these hybrid populations, the red wolf of the eastern U.S. and the Algonquin wolf--also known as the Eastern or timber wolf--of southeastern Canada, have already evolved into full species. What is still unknown is whether they should be considered two different species or one species with two living subspecies.

"Both red wolf and Algonquin wolf are critically important components of North American ecosystems and must be protected and restored," Dinets said. "The Carolina dog, which is also critically endangered, also deserves protection in its small natural range; it is a descendant of the first dogs brought to North America by humans at the end of the last ice age."

The overview helps debunk claims that the red wolf is not a real species and thus not worthy of protection, he said, noting that there are persistent attempts to kill red wolf reintroduction programs.

Dinets added that the critically endangered Carolina dog currently has no legal protection and animal control services treat Carolina dogs as strays and kill them. Most zoologists have not heard of it.

"These species must be protected and reintroduced if we want our forests to function normally," he said.

INFORMATION:

To read Dinets' paper on dog classification, visit http://www.bionet.nsc.ru/vogis/download/19-3/006Dinets.pdf.

--

CONTACT:

Vladimir Dinets (865-974-3328, vdinets@utk.edu)

Amy Blakely (865-974-5034, ablakely@utk.edu)


ELSE PRESS RELEASES FROM THIS DATE:

New international standards needed to manage ocean noise

2015-09-01
DURHAM, N.C. -- As governments and industries expand their use of high-decibel seismic surveys to explore the ocean bottom for resources, experts from eight universities and environmental organizations are calling for new global standards and mitigation strategies. Their goal is to minimize the amount of sound the surveys produce and reduce risks the surveys and other underwater human noise pollution poses to vulnerable marine life. Firms and agencies conducting the surveys would benefit from these new measures, the experts assert, because instead of having to navigate ...

The more the merrier for animals that synchronize their behavior

2015-09-01
BUFFALO, N.Y. - Social interaction could be the mechanism that allows animals living in groups to synchronize their activities, whether it's huddling for warmth or offering protection from predators. This social presence affects the daily rhythm of activity and rest, and the larger the group, the greater the likelihood of synchronization, according to a study published recently in the journal Biology Letters. "At least in mice, and perhaps in other animals, this study shows quite dramatic synchrony amongst groups of animals that can only be explained by social interactions," ...

Economic security requires new measures of well-being

2015-09-01
BUFFALO, N.Y. - Economic well-being for low-income families in the U.S. is often determined by federal measures that establish basic requirements for essentials such as food, shelter and clothing, but a new study by a University at Buffalo research team suggests that such a definition is unrealistically narrow. To help families move out of poverty, the existing perspective of economic well-being and its short-term focus on basic needs should reflect possibilities for long-term stability, including a savings plan, rather than day-to-day survival, says Yunju Nam, an associate ...

Story tips from the Department of Energy's Oak Ridge National Laboratory, September 2015

2015-09-01
To arrange for an interview with a researcher, please contact the Communications staff member identified at the end of each tip. For more information on ORNL and its research and development activities, please refer to one of our media contacts. If you have a general media-related question or comment, you can send it to news@ornl.gov. MATERIALS - Solar bake test for NASA ... To test an instrument for a spacecraft that will fly closer to the sun than any before, engineers at Oak Ridge National Laboratory and the University of California-Berkeley used ORNL's powerful ...

To email or not to email? For those in love, it's better than leaving a voice message

2015-09-01
BLOOMINGTON, Ind. -- In her hit single, Carly Rae Jepsen may have sung, "Here's my number, so call me maybe." But according to a new research study from Indiana University, she might be more successful in finding love if she asked him to send her an email. The research, which has been accepted for publication in the journal Computers in Human Behavior, suggests that, in this digital age, an email can be more effective in expressing romantic feelings than leaving a voicemail message. Previous research and conventional wisdom suggested the opposite, that a voicemail message ...

How much liposuction is 'safe'? The answer varies by body weight

2015-09-01
September 1, 2015 - What's the "safe" amount of fat to remove in patients undergoing liposuction? Rather than a hard-and-fast rule, the answer depends on the patient's body mass index (BMI), according to a report in the September issue of Plastic and Reconstructive Surgery®, the official medical journal of the American Society of Plastic Surgeons (ASPS). "Our study shows that liposuction is associated with a very low complication rate, with major complications occurring in less than 1 in 1,000 patients," comments ASPS Member Surgeon John Y.S. Kim of Northwestern ...

Yeast study yields insights into cell-division cycle

2015-09-01
ANN ARBOR--Studies using yeast genetics have provided new, fundamental insights into the cell-division cycle, researchers at the University of Michigan Life Sciences Institute report. Findings published Aug. 31 in the journal eLife show that an organelle known as the vacuole, which performs a variety of cellular housekeeping functions, plays an essential role in the initiation of the cell-division cycle. The cell-division cycle, also known simply as the cell cycle, is the series of events inside a cell that leads to its division. "The yeast vacuole has a counterpart ...

Study in mice suggests how anesthesia may fight lung infections

2015-09-01
In use for more than a century, inhaled anesthetics like nitrous oxide and halothane have made modern surgery possible. Now, in experiments in mice, researchers at Johns Hopkins and elsewhere have added to evidence that certain so-called "volatile" anesthetics -- commonly used during surgeries -- may also possess powerful effects on the immune system that can combat viral and bacterial infections in the lung, including influenza and pneumonia. A report on the experiments is published in the September 1 issue of the journal Anesthesiology. The Johns Hopkins and University ...

NASA-NOAA's Suomi NPP satellite sees Tropical Depression 14E disorganized

NASA-NOAAs Suomi NPP satellite sees Tropical Depression 14E disorganized
2015-09-01
Tropical Depression 14E was born in the Eastern Pacific Ocean early on September 1 when NASA-NOAA's Suomi NPP satellite passed overhead and looked at it in infrared light. Infrared light shows temperature, which is helpful in determining cloud top temperatures of the thunderstorms that make up a tropical cyclone line Tropical Depression 14E (TD 14E). The colder the storm, the higher they stretch into the troposphere (lowest layer of the atmosphere) and the stronger the storms tend to be. On September 1 at 0900 UTC (5 a.m. EDT), NASA-NOAA's Suomi NPP satellite passed ...

NASA sees wind shear affecting Hurricane Ignacio

NASA sees wind shear affecting Hurricane Ignacio
2015-09-01
Hurricane Ignacio is staying far enough away from the Hawaiian Islands to not bring heavy rainfall or gusty winds, but is still causing rough surf. Infrared satellite data on September 1 shows that wind shear is adversely affecting the storm and weakening it. The Atmospheric Infrared Sounder or AIRS instrument that flies aboard NASA's Aqua satellite gathers infrared data that reveals temperatures. When NASA's Aqua satellite passed over Ignacio on September 1 at 11:41 UTC (7:41 a.m. EDT), the AIRS data and showed some high, cold, strong thunderstorms surrounded the center ...

LAST 30 PRESS RELEASES:

How your brain decides blame and punishment -- and how it can be changed

Uniquely human brain region enables punishment decisions

Pinpointing punishment

Chapman University publishes research on attractiveness and mating

E-cigarettes: Special issue from Nicotine & Tobacco Research

Placental problems in early pregnancy associated with 5-fold increased risk of OB & fetal disorders

UT study: Invasive brood parasites a threat to native bird species

Criminals acquire guns through social connections

Restoring ocean health

Report: Cancer remains leading cause of death in US Hispanics

Twin study suggests genetic factors contribute to insomnia in adults

To be fragrant or not: Why do some male hairstreak butterflies lack scent organs?

International team discovers natural defense against HIV

Bolivian biodiversity observatory takes its first steps

Choice of college major influences lifetime earnings more than simply getting a degree

Dominant strain of drug-resistant MRSA decreases in hospitals, but persists in community

Synthetic biology needs robust safety mechanisms before real world application

US defense agencies increase investment in federal synthetic biology research

Robots help to map England's only deep-water Marine Conservation Zone

Mayo researchers identify protein -- may predict who will respond to PD-1 immunotherapy for melanoma

How much water do US fracking operations really use?

New approach to mammograms could improve reliability

The influence of citizen science grows despite some resistance

Unlocking secrets of how fossils form

What happens on the molecular level when smog gets into the lungs?

Using ultrasound to clean medical instruments

Platinum and iron oxide working together get the job done

Tiny silica particles could be used to repair damaged teeth, research shows

A quantum lab for everyone

No way? Charity's logo may influence perception of food in package

[Press-News.org] Ancient hybridization key to domestic dog's origin, wolf conservation efforts
Press-News.org is a service of DragonFly Company. All Rights Reserved.
Issuers of news releases are solely responsible for the accuracy of their content.