Animals Directory

Archive for the ‘Sexual selection’ Category

Is a mammal Perissodactyla Family Equipage, herbivorous, quadruped and long, arched neck. A female horse is called and the juvenile filly foals. The breeding and use of the horse by the man known as horse breeding and horses.

The name of “horse” comes from the Latin cabals which gave its name to ‘gelding’, the feminine Latin equal led to “horse” and young animals in general were known pulls, literally ‘chicken’, hence a word Vulgar Latin * politer, puller derived “Pony” or “colt.”

Reproduction:

It reaches sexual maturity at 4 years. Gestation lasts about 11 months and the female gives birth to one calf (the birth of twins is rare as the births of 3 or more foals, and is more common in older mares). Domestic horses have difficulties in sexual coupling, so that sometimes it is necessary that a man directs the member of the horse at the time of fertilizing the female, these men are called mamporreros.

Life:

Have an average life of 25/40 years in captivity and free living in around 25 years. The inclination of the incisor teeth increases with time and serves to determine the age of the horse. It is normal that any more live cases. Do not reach maturity until 4 years when they stop being foals (fillies in the event that they are females), at this age are beginning to tame and ride. It is from 6 years when horses are considered adults, and tend to calm down. A healthy horse can be ridden well into their 20 years.

The giant panda is a large animal like a bear, with long white hair, thick and woolly appearance and the feet, shoulders, ears and eye area black. The tail is broad and short. The giant panda lives in the bamboo forests of central China, at altitudes ranging between 1,500 and 3,000 m.

The giant panda:
1.-LIVES: cold and wet in the bamboo forests of eastern Tibet and southwestern China.El giant panda living in remote mountainous regions of central China’s Southwest, and feeds on bamboo forests. Middle inhabited (aquatic or terrestrial): Terrestrial

2.-TYPE OF FOOD: (Herbivore, carnivore, omnivore etc.) Omnivore is believed to live exclusively on bamboo shoots, it was later revealed that during the 10 or 12 hours that used to eat, they eat other plants such as herbs, gentian, lily, saffron, and also rodents and birds and fish.

3.-HOW IS YOUR PLAY: Viviparous. Mating takes place in spring and the young are born in late winter. The female gives birth to between one or two cubs, which reach sexual maturity between four and ten years.

Brief description of their behavior: The pandas are solitary animals except during mating season, spend their lives mostly in the ground, but climb trees when pursued by dogs. Are active all year, knowing little more about this quiet animal that lives in inaccessible regions, when they first were caught alive destined for zoos.

It is a species (rare, threatened, endangered, extinct, subject to special protection, etc.): A species that is specially protected and endangered extinction. Destruction of their habitat. Even if the species has been protected in the past was hunted, by China’s population.

POPULATION: There are only 1,000 copies released in special reserves, protected by the Chinese government and another 100 in zoos.

It is well known the so-called false thumb of the panda, which is actually a highly developed radial sesame bone and forming a sixth finger oppositional to the other five, thanks to this modification, the giant panda can handle and grasp with some skill objects as small as bamboo stalks, which form the bulk of their diet. Besides bamboo, also eat bulbs, roots, eggs and small mammals.

It is a solitary creature of habit, except in the mating season, when both sexes together, then, can be heard grunting males competing to mate with a receptive female. Tienelugar mating in spring and the young are born in late delineation. Lahembrapareentreunoo two cubs, which reach sexual maturity between four and ten years.

Protect your body with a shell formed usually by bony and horny plates, made of calcium from the bone itself. The shell will go ahead, head and forelegs, tail and hind legs from behind. The spine is soldered to the back of the shell, this is one of the most important features of its skeleton. Breathing is through the action of the limbs as the nature of his ribcage is unable to breathe.

Turtles have no teeth, but his strong jaw sharp peak shape allow them to eat their food. One of the characteristics of turtles, which varies according to the species they belong to, is their longevity, and can reach up to 150 years.

There are land turtles habitat, aquatic, marine and freshwater. There are also lots of species with semi-aquatic habitats as part of the time spend on land and part in fresh water. The terrestrial habitat have separate fingers, while the aquatic habitats have fins transformed into limbs or fingers webbed.

Sea turtles can live 30 to 40 years after its kind. Sea turtles can achieve high-speed swimming in the sea. Sea turtles have a collar made of 8 vertebrae, so have limited mobility but they can retract the head.

The lungs of turtles are very similar to those of humans, can hold their breath for ten minutes. They have no external ears, but will have a very efficient procedure, the sense of hearing is very keen on them. The sense of smell is weak, the view is better on sea turtles, but have a highly developed sense of direction. Sexual maturity occurs between 6 and 8 years old, usually male to female waiting off shore to breed.

The comical sea lion, sea lion hair, southern sea lion or sea lion South American sea lion is a species of mammal pinniped family of sea lions.

• Description

They are dark brown and black as adults when young. Adult males usually weigh about 300 kg, double that of females, and have a layer of reddish brown hair on the neck. This “hair” is the reason they are called “sea lions.” They live in colonies of about 15 individuals, formed by the male, his harem and a few young. During the summer, December and January, giving birth to move to protected sites where thousands of animals congregate. Gestation lasts about a year and each time a single calf is born. During the breeding season, males go into battle for control of their territory and females, and is usually not fed during this period. They live about 25 to 50 years.

• Habitat

Inhabits the South American coast, in the Atlantic and the Pacífico.Se is on the coast of South America, Ecuador, Peru, Chile, Argentina and Uruguay. It is found from southern Brazil to Tierra del Fuego in Argentina and from Bay Zorritos, Peru, to the southern tip of Chile respectively.

• Food

Their food is fish, octopus, squid, penguins and other seabirds, they eat between 15 and 25 kg of food per day and, in turn, are prey for orcas.

• Endangered

The human being the hunted for meat and oil, but the main reason to pursue was that the skin of newborn pups, called “poposa (English puppy) is used in fur.

• Customs

For most of the year, spend most of their time at sea have been found to sometimes sleep under the waves. When you come ashore, looking for rocks or islets alone and know to climb the highest points, rising to do so on the hind feet and rising with the help of the above to move from rock to rock. Usually when they want to return to the water, do not fall again, but into the sea at once, as they are excellent swimmers. When they walk on land, they do with the body raised on four limbs, clumsy movements, but fast enough. Their food consists entirely of fish, they know apprehend with rare skill. Normally eat between 15 and 25 kg. Of fish per day.

Mating systems can be considered as the expression of an animal’s reproductive behavior, and how through such an individual may optimize their reproductive success (having the maximum number of offspring possible).

The theory about how they are structured mating systems has greatly enriched in the last two decades of research in animal behavior. An interesting approach to understand these systems in pinnipeds (sea lions, seals and walruses) is to examine the relationship between sexual selection (see sidebar, “sexual selection” and ecological factors involved in determining these systems (topography, climate , oceanographic variables, availability of food, etc..).