Bester - fish hybrid origin.To obtain it using eggs and milt beluga starlet.The name formed by the first letters of "parents", and if you translate from English ("best"), you get the "best".It is exclusively a Russian work begun by Professor NINikolyukin and later extended by his students under the guidance of IABurtsev.
Today Bester - fish that are grown on a commercial scale, not only in Russia but also in the United States, the Baltic States, France, Belarus, Italy.Perhaps it will take years, and the first man-animal species will launch a whole group of domesticated fish.
Bester - fish, obtained after many failed experiments as Nikolyukin held various crossing sturgeon and beluga sturgeon to even think does not connect.Not only that, they are not comparable weight (beluga grows up to a ton, and sturgeon - up to 2 kg), spawn at different times and in different places, so they also belong to different genera sturgeon.And when intergeneric crosses are known sterile offspring is obtained.The study of genetics of these species revealed that they have the same number of chromosomes, ie the "marriage" between them is possible.
zeal of our scientists have proved themselves.Sturgeon for which any change in the familiar environment proved disastrous, it was possible to grow in ponds as carp.It turned out that hybrids need deeper reservoirs.And it may live in sea water and fresh water.Growing Bester began to carry out in cages, that is enclosed sea areas or reservoirs with a "roof" and "bottom" to keep the fish swam away.
took of the "parents" best fish Bester.Photos confirms this.From beluga got intensive growth and predatory way of power, but from the starlet - excellent taste meat and precocity.In addition, this hybrid rather prolific.The female can buttonhole up to 150,000 eggs (more than a starlet, but smaller than Beluga).
in nutrition also found advantages.Bester - fish lazy, he did not have enough food, like salmon or trout, for example, and takes as if reluctantly.It can not be overfed.By the way, trout from overeating even killed.Without food hybrid can spend a couple of months.
Bester - not schooling fish.Each individual is unique, moves in the pool (SADC) alone or standing still, ignoring the others.Reflexes are developed well.For example, a boat, which made feeding, well learn to swim it.Hybrids are little affected by diseases that can not be said about other fish, are grown in large quantities.They are hardy, balanced and calm.
Given that most of the eggs used in food may be uncertain, and there will be enough belugas and sterlet in nature to obtain sufficient quantities of Bester.Undoubtedly, because each kilogram of fertilized eggs can get a ton of fish.
Since receiving the third-generation hybrids began to show abnormalities in the form of immature eyes fused scutes and others.Progeny Bester very variable along the length of the snout, the rate of growth, the shape of the mouth.Breeders have yet to stabilize and improve the system of hereditary viability of offspring.Science does not stand still, and it is hoped that scientists will be able to solve the tasks.
