Biologist Marshall Mackey (Marshall McCue ) from University of Arkansas (University of Arkansas ) undertook a study of the biological mechanism that enables some snakes to starve for up to two years.
For that, he spent 168 days observed 62 individuals of three snake species (distant relatives): Royal Python, white snake and Texas gramatnica.
Macku followed physiological, compositional and morphological changes of the snakes and found that snakes can reduce their metabolic rate by 72%! For this they use a special survival strategy in the absence of food, is not peculiar to any of vertebrates.
The rate at 72% is shocking, as “snakes and so consume little energy, and we still didn’t know how they manage to reduce energy consumption to such a low level”, ” says Marshall.
What’s even more amazing is the fact (also found by Makku) that snakes on loss from 9.3% to 24.4% of initial body weight continued to grow in length (especially increased size of the head – just like those snakes).
Day 168 to study rattlesnakes showed a record decline in the intensity of metabolism. He was only 28 per cent. Snakes reduced the metabolism to the bar in 55%. At the same time, the pythons, the maximum decrease in the intensity Continue reading
Selection of beautiful pictures of snakes — and not so poisonous — from all continents.
Keeled grass too. The snake is non-venomous, and the snake yawns after a hearty lunch, to reinstall the jaw and catch my breath.
Mamba Jameson . graceful green snake of the length two meters, the venom of which has a nerve effect. Deny the muscles of the respiratory system and the victim is slowly but surely suffocating. Then the serpent eating it. It lives in Africa. There is still the black Mamba, its length 4 meters, which is as poisonous as the green, but I am afraid of it anymore. There is a belief that if a black Mamba crossed the path, wait for death. Or she will crawl and bite, or just die from an accident. It is believed that the bite of a deadly Mambo, but it is not. If within one hour after the bite to take the serum, then survival is guaranteed. To escape from the snake is almost impossible, Mamba moves at a speed of 11 km/hour.
Rainbow boa constrictor, inhabits South America, especially a lot of snakes in the Amazon. It feeds on small animals, most large animal who can strangle him, – it’s a big rat. If you feel the danger, and can bite, but they are not poisonous.
Mexican non-venomous king snake of the family geobrush. Lives in Mexico, Continue reading
Almost all snakes reproduce sexually, with the participation of female and male. Only certain species are capable of parthenogenesis, i.e. the reproduction is not transmitted sexually, and from unfertilized eggs without the participation of a male. There among the snakes, as a rare exception, and true hermaphrodites, i.e. individuals who are simultaneously female and male. Such exceptional case was recorded on the small island of Queimada-Grande, South America. There were found the snake, dubbed the island bothrops, among which, in addition to ordinary females and males, meet bisexual individuals who make up the majority of the population. These individuals are females, while the ovaries are the male copulatory organs and Mature testes. Such individuals may in some cases play the role of females and to breed, and the males are fertilizing other females (ordinary or hermaphrodite). The existence in the population of the island bothrops such unusual females is so efficient, the need for normal males has dropped, and their share in recent years has declined.
The female from the male in the overwhelming majority of snake species difficult to distinguish. The serpent the visible Continue reading