Yellow ground squirrel or gopher-sandstone — citellus fulvus lichtenstein. Sex and age composition of the population

It is first necessary to dwell on the sex ratio at birth, which we determined from the last stage of embryo development. Scan results 1633 embryos showed that among females predominate (53%). Predominance of females was also observed in the period of life strive to animals, but the sex ratio at older ages vary from year to year, depending on the habitat. In the end, young to hibernation, ie, obtained at the age of three months, the previous sex ratio - females predominate over males. At this time the animals lead an independent life. If a high percentage of deaths of male embryos can explain Read more [...]
Tags: , , , , , , |Comments (0)

Site "Survival in the wild nature", glad to see you. If you come to us, it means you want to get complete information about survival in a variety of extreme conditions, in emergency situations. Man, throughout the development, sought to preserve and protect themselves from the various negative factors surrounding it - cold, heat, hunger, dangerous animals and insects.

Site structure "Survival in the wild nature" is simple and logical, selecting a specific section, you will find information. You will find on our website recommendations and practical advice on survival, unique descriptions and pictures of animals and plants, turn-based scheme to trap wild animals, tests and reviews of travel gear, rare books on survival and wildlife. The site also has a large section devoted to video on survival survivalist-known professionals around the world.

The main theme of the site, "Survival in the wild nature" - is to be ready to be in the wild, and the ability to survive in extreme conditions.

The Survival in the wild nature - how correctly to behave, it having appeared in an emergency situation. Ability to find a way out from any situation: to kindle a fire, to put traps, to prepare food, to arrange dwelling and a lodging for the night; to learn to knit knots, to clear water, to be guided by districts, correctly to choose equipment, a knife. Also you can download directories to tourists, encyclopedias survivals, video Bear Grills to Survive at any cost (Man vs. Wild).