Such conclusion has been made by specialists of the Vavilov Institute of General Genetics, Russian Academy of Sciences, who worked at the deer-raising farms in the Todzhinski Region, Tuva. Control over genetic markers and well thought-out breeding system will help to protect the most southern domestic reindeer population from degeneration. The researchers assessed genetic diversity by comparing sequences of animals’ mitochondrial DNA. Material for investigation was received from pieces of dried unprocessed hides of recently slaughtered reindeer.
Mountain taiga of Southern Siberia is a small deer-raising islet distant from the main natural habitat. The major part of domestic reindeer inhibits Russian tundra from Kola Peninsula through Chukotka, in Siberia, reindeer lives even in mountain taiga. The taiga deer-raising zone occupies the territory through to 60° north latitude. One of the most southern domestic reindeer populations inhabits Republic of Tyva (Tuva). Main herds of the Tuva population are concentrated in the north-east of the Republic, in the Todzhinsky Region. Small ethnic groups – the Tofa in the Irkutsk Region, the Soyots in Buryatia, and the Mongolian Duha – living in the neighborhood also breed deer. In contrast to reindeer-breeders of Southern Siberia and Europe, who pasture huge reindeer herds in tundra and mainly use them for meat-preparing, people of Southern Siberia and Northern Mongolia breed small herds in taiga and alpine tundra. They need reindeer predominantly as pack and saddle animals, and as milch animals.
The Golden Age of the Tuva deer-raising fell on the late 30-s of the 20th century when reindeer quantity was equal to 19 thousand head, thus approaching the maximum. However, since 1980 through 2000, the quantity of reindeer dropped abruptly. There remained about a thousand head of reindeer, and that means that in case of any epidemic the Tuva domestic reindeer population may simply vanish from the face of the earth. Degeneration is the second threat to a scanty population, as small livestock is often entailed by genetic uniformity. The Moscow geneticists came to Tuva particularly to assess genetic diversity.
The researchers managed to single out mitochondrial DNA from 29 hides, among which they discovered sufficient genetic diversity, although more than half of slaughtered animals had descended from the same female. Analysis of mitochondrial genome allows to evaluate only maternal diversity. As only one sire ususally falls on a herd of 5 to 20 females in the Todzhinsky Region, genetic diversity in terms of chromosomal DNA may be lower than that in terms of mitochondrial one. This is still to be verified. In the researchers’ opinion, the Tuva reindeer population needs continuous control over genetic diversity. In this case, there remains hope for saving the most southern reindeer from degeneration.
Sergey Komarov | alfa
Raiding the rape field
23.05.2018 | Julius-Maximilians-Universität Würzburg
New technique reveals details of forest fire recovery
17.05.2018 | DOE/Brookhaven National Laboratory
At the LASYS 2018, from June 5th to 7th, the Laser Zentrum Hannover e.V. (LZH) will be showcasing processes for the laser material processing of tomorrow in hall 4 at stand 4E75. With blown bomb shells the LZH will present first results of a research project on civil security.
At this year's LASYS, the LZH will exhibit light-based processes such as cutting, welding, ablation and structuring as well as additive manufacturing for...
There are videos on the internet that can make one marvel at technology. For example, a smartphone is casually bent around the arm or a thin-film display is rolled in all directions and with almost every diameter. From the user's point of view, this looks fantastic. From a professional point of view, however, the question arises: Is that already possible?
At Display Week 2018, scientists from the Fraunhofer Institute for Applied Polymer Research IAP will be demonstrating today’s technological possibilities and...
So-called quantum many-body scars allow quantum systems to stay out of equilibrium much longer, explaining experiment | Study published in Nature Physics
Recently, researchers from Harvard and MIT succeeded in trapping a record 53 atoms and individually controlling their quantum state, realizing what is called a...
The historic first detection of gravitational waves from colliding black holes far outside our galaxy opened a new window to understanding the universe. A...
A team led by Austrian experimental physicist Rainer Blatt has succeeded in characterizing the quantum entanglement of two spatially separated atoms by observing their light emission. This fundamental demonstration could lead to the development of highly sensitive optical gradiometers for the precise measurement of the gravitational field or the earth's magnetic field.
The age of quantum technology has long been heralded. Decades of research into the quantum world have led to the development of methods that make it possible...
02.05.2018 | Event News
13.04.2018 | Event News
12.04.2018 | Event News
23.05.2018 | Life Sciences
23.05.2018 | Physics and Astronomy
23.05.2018 | Life Sciences