Regional assemblages of species of poisonous snakes in different geographical areas may vary depending on your location. In each location the major efforts must be made to be aware of the presence of toxic species, as they are not the dominant species and represent a danger to humans. In addition, they are much better known under local names or simplified compared to the more common and comparatively less dangerous individuals. In Panama, the special distribution received three main families of poisonous snakes, namely: alkoholowe vipers, coral snakes and sea snakes.
Only in the Western hemisphere of the Earth all the vipers are so-called pits, which represent a deepening from the outer side of the upper jaw, between the nose hole and eye, which indicates zoologist Harold Trapido, is sensitive to changes in the ambient temperature of the body. Thanks to its incredible sensitivity, this hole helps to locate and attack warm-blooded animals (of course, when the predator is close enough to potenitally victims). It is considered, among other things, that such amharinya bodies along the lower jaw perform the same functions and have common Boas (or devouring snakes). Even assuming that such a snake is removed and the language she blinded with blackened collodion, it will still be able to produce its fatal bite, aiming for an electric bulb, covered with Continue reading
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
Below is a series of images showing how to make the safe transport of snakes in hot weather and in cold weather.
The first shows the main elements that you need to make your own a safe transport box for snakes. You’ll need a sturdy cardboard box, one sheet teploizoljatsionnogo of polystyrene of a thickness of 2.5 cm(this is a special type of foam that is sold in DIY markets. It is much denser than normal foam and has a hard plastic coating that stays sticky tape) and a sharp knife. The second picture shows the best packing tape is one of those that you can buy. It is very comfortable and durable packing tape. When transporting animals to save on strength it is impossible.
Here the image is collected, but not fully stocked box for transport. Make sure you stick the tape on all internal seams of the box before you put it in the foam.
The partition separates a small chamber with cold or hot packs. Dividing the foam must have a small hole size of 1 5 cm. It will allow cold or warm air slowly to cool or heat the compartment with the animal. Don’t forget to glue all joints on both sides.
Once you do, you can lay down and on the sides of the compartment bags (chilled Continue reading