Sunday, July 29, 2012

Bronze Whaler Shark

Bronze Whaler shark is a large species and can reach a maximum size of at least 325 cm and weighing up to 250 kg. Bronze Whaler shark has a blunt nose and the area of ​​medium length with sharp round or pointed. There are narrow, the shark tooth cusp determined. Bronze Whaler shark does not have a ridge interdorsal. The upper part of the body showed gray and olive bronze, while the belly is white. Fins plain, but the black tip of pelvic fin and the end of the rear edge of the pectoral fin and a dark or black. Just like other shark species, Bronze Whaler shark has a frame made of cartilage, not bone. Cartilage is a flexible material and is found in the human body also, for example at the end of the nose and on the outer ear. Cartilage is very flexible when formed but the body use calcium to be stiff and strong enough to support the body's large sharks in the water. Shark family is very old and has been around for more than 350 million years. Along with the shoes and rays, shark species is the only non-endangered fish with cartilage instead of bone.

Bronze Whaler sharks inhabit most parts of the world and is found in the waters around all the continents except for the cold waters around Antarctica. In the occupied West Atlantic and Gulf of Mexico water from Brazil and Argentina. Bronze Whaler shark also lives off the coast of southern France and around the coast of Africa. It is generally found in the Mediterranean. In the Western Pacific Bronze Whaler sharks are found from Japan to New Zealand, and the Eastern Pacific is inhabited areas of southern California in the United States and all the way down to Peru, including Gulf of California.

The Bronze Whaler sharks that inhabit the planet north of the distance traveled each year and migrate south for the winter and return north for the summer.

Bronze Whaler shark like tropical and subtropical waters, and found from 45 ° to 52 ° S. LU This is related to the reef and are known to dive to at least 100 meters. In shallow areas can be found near the bottom. This is a species off the coast that is often used to go over the edge of the continental area. The Bronze Whaler shark will also sometimes great effort to bay beaches and coastal areas. It is generally found in marine waters, but also seen in brackish areas.

It eats fish, especially pelagic and bottom bony, particularly swordfish and shark swordfish. It is also known to take other sharks, fish, mullet, stingrays and squid. The annual sardine run off the coast of South Africa always attract plenty of Bronze Whaler shark.

Bronze Whaler shark popular among fishermen and fish are often caught rawai. It is one of the slowest shark species grow, which makes it very vulnerable to over-fishing. The minimum population doubling time for Bronze Whaler shark more than 14 years. Bronze Whaler shark was involved in shark attacks on people and should always be approached with caution. The best way to prevent attacks is to stay away from sharks and never even try to approach even if it is relaxed.

Over the last few years Bronze Whaler shark has been the focus of the research project utilize satellite technology to monitor the migration patterns. This has produced amazing results and today's scientists suspect that there are at least two different populations of Bronze Whaler sharks off the coast of southern Africa. The first eastern Western Cape life, while other residents were found in Walvis Bay in Namibia and Angola to the north off. The Bronze Whaler shark found off Namibia and Angola's the same people and travel between countries. Two sharks tagged in southern Angola in 2003, located in Swakopmund in Namibia, three months later, which is 715 km south from southern Angola.

Bronze Whaler shark is the bearer of the internal life and Bronze Whaler shark woman will give birth to live puppies. This forms the pair of species and the eggs are fertilized in the female and the male hug. Bronze Whaler shark breeding methods are vivipar and offspring receive nutrients from the yolk-sac placenta while they develop in their mother's body. One of the litter will consist of between 7 and 20 cats and newborn calves Bronze Whaler sharks are usually 59-70 cm. Bronze Whaler shark gives birth year rotation, but with a peak during the summer.

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