Sunday, July 29, 2012
Bull sharks, Carcharhinus leucas, known by the name, including the Shark River, Estuary Whaler, Freshwater Whaler, Swan River Whaler, Ground shark, Slipway Grey, Zambezi and Shovelnose. There are only six known species of sharks in the world could live in both salt and fresh water: Borneo river shark (sp Glyphis B.), the Irrawaddy river shark (Glyphis siamensis), New Guinea river shark (C. sp Glyphis), shark Ganga (Glyphis gangeticus), shark Speartooth (Glyphis glyphis) and Bull sharks (Carcharhinus leucas). Bull sharks are the most common of the six species and is found in various parts of the world.
In the West Atlantic, you can find Bull sharks off the coast of Massachusetts, United States and south to Brazil. In the East side of the Atlantic Bull shark off the coast live Morocco and from Senegal to Angola. Bull sharks are also found in the Indo-West Pacific region where it occupied the territory of Kenya and South Africa to India, and farther to the waters around Australia and Vietnam. At the West side of South America-North and Bull shark life from southern Baja California in Mexico and Ecuador. Bull shark may also have been seen off the coast of Peru, but this is still not confirmed.
Bull shark hunt alone and feed primarily on bony fishes and other sharks. Sandbar sharks are very popular small, but the Bull sharks are opportunistic and will eat various foods, including rays, sea turtles, carcasses of mammals, mantis shrimp, squid, crab, sea urchin, sea snails and even garbage.
A Bull shark will reach sexual maturity when it is between 8 and 10 years. Bull shark reproduction method is vivipar. Fertilized eggs in females and developing Banteng shark in itself, receive nutrients from the yolk-sac placenta. After a pregnancy of around 10 or 11 months she gave birth to live puppies. During courtship, the male embracing the female and female sharks Banteng because it will always have scars on their bodies courtship. Male bull sharks are almost always without fighting scars. One litter usually consists of 1-13 small fish and young Bull shark is usually about 60 cm at birth. Delivery time depends on the habitat female Bull shark. For example,female Bull sharks live from Nicaragua can give birth year rotation, with the number of births peaked in spring and early summer. Bookmark and women who live sharks off the coast of South Africa on the other side will only give birth in late spring or early summer. The same is true for women Bull sharks living in the western North Atlantic off Florida or the Gulf of Mexico. The minimum population doubling time for Bull sharks more than 14 years.