offspring

“Types of snakes”

In the legends of ancient China tells the story of that dragon once there was a huge sea snake or a giant boa constrictor, swollen from the sea water in the Yangtze river.

Live large Boas and Kharkov zoo. Although to see their usual Kharkiv is unlikely. For the past four years as the entrance to the terrarium of the zoo is closed — emergency building on the brink of destruction. The roof of the cage, consisting of concrete slabs started to crumble. And simple repair in this case is not enough.

Once there was an aquarium for fish the local waters, says head of the Department of amphibians and reptiles of the zoo Olga Kalinovskaya, and when in 1995 marking the centenary of the zoo, was transformed into the current terrarium. Now the zoo management plans to restore the aquarium, and over it to build the pavilion-a terrarium. It remains only to find the money to build.

Thus it happened that now to exhibit a collection of snakes for the zoo anywhere. New housing received only crocodiles, lizards and small amphibians in the premises of the recently renovated monkey house. The rest live in various closed the eyes of the visitors spaces.

In Kharkov zoo today is home to 20 snake species, only about 200 individuals creeping. All of them are tropical snakes that were bred in captivity.

Creeping the oldest inhabitant of the zoo — a female Continue reading

“Types of snakes”

Found a gene that determines, will become a gamete sperm or egg

Japanese genetics found in the DNA of fish unusual gene that determines it, will the sex cell sperm or egg, and changed his work so that in the ovaries of female fish began to form spermatozoa and in the testes of males of the egg, according to a paper published in the journal Science .

“We knew that gametes can turn into sperm and ovum, but no one has suggested that these cells in the vertebrate animals have a special gene”switch” that determines their fate – to become a sperm or egg. Our results indicate that the cell is able to go all the way. This is a very important and unexpected discovery” – quoted by RIA “Novosti” scientist Minoru Tanaka from the Institute of General biology of Japan in the city of Okazaki.

Tanaka and his colleagues made this unusual discovery, watching the development of germ cells in testes and ovaries rice fish-oriii (Oryzias latipes). During maturation of sperm and egg cells, researchers monitored changes in the level of activity of different genes, trying to find the differences between future male and female reproductive cells.

The attention of scientists was attracted to gene foxl3 – “archival copy” of the gene foxl2, which is responsible for growth of eggs and maintaining Continue reading

Poisonous snakes without poison, legends and facts

Very often my posts under slip phrases on the removal of the fangs of Viper and snakes of the elapid snakes of different other ways to achieve safe work with dangerous types is also sounded. I have to say, I’m against working with defective snakes. Will tell more to further the conversation with the observers was much more productive.

Venevitinov, poisonous snakes, which after surgery can not enter the poison. They come with remote stings, or with the cut paths from the gland to the tooth. Such aspidova and vipers and pit vipers (Cobra, krait, Mamba, Tapani, etc.) necessary for the collections of zoos, in places where there are laws about poisonous animals for public educational demonstrations, such as walking kindergartens with typename (as does R. Hosser). Again, for the simple terrariumistov, if the snake was purchased from the source of the first two examples. Also, removed the poisonous teeth of the two methods, but it is extremely inefficient, direct removal of poisonous fangs leads to regeneration of functional parts, subsaline all scaly on top, often remove maxillary bone, which are poisonous fangs, this leads to impending doom the serpent. Exotic show of venomoids often use, but often replacing cobras on ugowych harmless snakes, many of which are also able to show the hood.

Snake-venomoid Continue reading

Jamaican boa
A snake of medium size, relatively slender; Maximum length is 2.2 m. Females usually larger than males, both in length and in proportion. Have a number of 33-41 dorsal scales…

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Poisonous snakes you can find in almost any place while traveling
How much do we know about Sea serpents? And that not having very many species and subspecies.They live in the tropics and subtropics,two oceans, the Indian Pacific,from Japan to the…

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Jamaican boa
A snake of medium size, relatively slender; Maximum length is 2.2 m. Females usually larger than males, both in length and in proportion. Have a number of 33-41 dorsal scales…

Continue reading →