Excretion system reproductive behavior of seals
Author: Rose F. Callaway
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..).
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