The great capacity of the Sarda Shark
Introduction
The strangest thing is this. Sarda sharks have the capacity (which do not have other sharks) to live both in salt water and in fresh water, this is due to a “special gland” located in its kidney that allows it to store salt water in your body and expelfresh water. And it is that fresh water can cause the death of the rest of the sharks, since it makes their cells collapse. This is another example, how fascinating nature can be. This significant ability of this species is what can be located in rivers, seas and lakes. The problem is that it also facilitates that the Sarda Shark.
Developing
You can get closer to people, which has caused attacks. His routine is fascinating: they live at a depth that is between 30 and 50 meters and occasionally they venture beyond the 100 meters down. Incredible! During the night they swim at less depth than during the day. In general, this species shows lonely and non -migratory behavior. For example, when subtropical waters begin to decrease their temperature, some South American specimens migrate from the Amazon River to the Atlantic Ocean. The truth is that these species choose the coastal areas surrounding the mouths of important rivers.
From the Río de la Plata to the tributaries of Potomac on the American Eastern Coast, look for all the big estuaries in all the places that inhabits: both coasts in America, Africa and India and the entire region from Southeast Asia to the north coastfrom Australia. And in all these places it represents an important danger to people. An analysis of the population of SARDA shark that was carried out in Lake Nicaragua, showed that these animals have preference to reproduce in fresh water and begin to migrate to the oceans as they age and increase their resistance to salt water.
That eats? As for its diet, its omnivorous diet is very rich and provides all the nutrients that such a strong animal needs, it can be based on fish and other sharks, but it also enjoys eating turtle birds, dolphins, crustaceans, dwarfeven the terrestrial mammals that can capture. It is quiet appearance, but it is only like a frame, since it can suddenly become aggressive if you feel threatened. Curiosities His ability is such that he chooses to hunt in murky waters so that the vision of his potential prey is difficult.
To eat, first hits and then bites strongly until the dam is unable to breathe. Remember that your bite has a force of up to 600 kilograms. Your reproductive capacity is complex. This kind of shark is life and reaches sexual maturity between 8 and 10 years of age. As experts have not managed to observe the courtship ritual, it is speculated that the male bites the female in the tail so that it turns and so, can copulate with it. A curious fact in this regard is that sometimes the stage prior to copulation can be aggressive and the female results with multiple damage to her body.
conclusion
Approximately 1 year after this dramatic encounter, around 13 young are born that measure about 70 centimeters in length, after 10 years they will be reaching maturity. At present, the SARDA shark is classified by the International Union of Nature Conservation (IUCN, by its name in English), as a "almost threatened" species being the cause of this fact, the practice of fishing for consumption. This is an aspect that should call reflection.
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