Wednesday, November 02, 2011

KOMODO : The Last Living Dinosaur On Earth


About Komodo

It has been suggested that Komodo Dragons may have been originally discovered by Chinese traders as early as the 2nd century AD. The evidence of this discovery comes from a single note on a map stating “Here be dragons” around Komodo Island.

Komodo Island is located at 8° 33′ 0″ S, 119° 27′ 0″ E and has a surface area of 390 km² and over 2000 inhabitants. This island is part of Indonesia's 17,508 archipelago, and the inhabitants are descendants of former convicts who were exiled to the island and who have mixed themselves with the Bugis from Sulawesi.

This Island is the home of Komodo Dragon (Varanus Komodoensis),which is the largest living species of lizard, growing to an average length of 2 to 3 metres (6.6 to 9.8 ft) and weighing around 70 kilograms (150 lb).
Behavior

The Komodo Dragon was formally discovered by in 1910 by a Lieutenant van Steyn van Hensbrock, a Dutchman stationed on the island during WWI. Once discovered, the dragons became an instant fascination and took on an almost mythical aura. Ultimately the Komodo Dragon received its taxonomic name, Varanus komodoensis (V. Komodoensis).

Physical Characteristics

The “Dragon” is actually a giant monitor lizard. While not a mythical creature, the Komodo Dragon is an amazing animal in its own right. Males can grow up to 10 feet and weigh up to 200 lbs. while their female counterparts can grow up to eight feet and weigh up to 150 lbs.

They are the world’s largest living lizard. Their ancestry can be traced back to 100 million years when other giants roamed the world. They have been ecologically isolated on a small group of islands and have remained on top of the food chain in their world.

They boast short, muscular legs, clay-colored scales for skins and a long, muscular tail. They use their powerful claws to fight off other dragons during the mating season. They have sixty sharp, serrated teeth that are replaced on a frequent basis.

They are fast, agile, and great swimmers. They have been known to swim from one island to another in their quest for food and mates. As juveniles they are able to climb and live in trees.

Komodos can see up to .3 miles although its hearing is very limited. Its strongest sense is smelling. It is able to smell carrion for up to five miles. It also uses chemical and scent communication with other Komodos by marking its territory.

Geographic Range and Habitat

Komodo Dragons are found in the Lesser Sunda Islands that include Rinca, Komodo, Flores, Gili, Montang, and Padar. Their total range is less than 1,000 square km. Komodo National Park makes up all islands except Flores.

Their natural habitat consists of arid volcanic islands and a barren landscape. They endure a short monsoon season that produces floods. The average temperature on Komodo Island is around 80 degrees and even early mornings are hot and dry. Dragons mostly live in the lower arid forest and savanna ecosystems.

The locals on the island call the dragon Ora and display a great respect for the giant, predatory lizard. A full grown Komodo Dragon has no qualms about attacking and eating people.

Dragons are mostly solitary animals except during breeding season. Males are territorial and will defend their territories during mating season. However, they are not territorial when it comes to food. Their territories tend to overlap when hunting and they amicably share their ranges. The only time they might come together is to share the meal of a large carcass.

They sleep in burrows at night and roam about during the day. They enjoy a simple life of sunning, roaming, eating, napping, and sleeping.

Diet

Komodo Dragons are carnivores and cannibals. They roam about searching for carrion (carcasses) or take to ambushing and hunting prey. Komodos will eat just about any type of meat they can get including wild pigs, deer, water buffalo, snakes, fish, and even their own kind. They are on the top of their food chain and have no natural predators of their own.

Their serrated edge teeth are deadly and their mouths are filled with upward of fifty different bacterial species. Once they’ve bitten their prey the fight is over. Even if the prey isn’t killed during the attack it will ultimately die from infection. The dragon will simply follow its wounded prey until it succumbs to the infection.

Reproduction and Growth

Mating season for Komodo Dragons runs from July to August. The females use the brush nest of another species to lay her eggs. She will normally lay up to 30 eggs in September. She will sit on the nest during the incubation period, but does not display any parenting behavior once the eggs hatch. The eggs hatch the following spring around April. Baby Komodo Dragons are generally around 15 inches long and weigh about 3.5 ounces.

Hatchlings live a precarious life and they tend to have a fairly high mortality rate. They are prey to other animals and even their own kind. Komodo Dragons are notorious for eating their own young. In response, hatchlings scramble to the nearest tree and remain in the trees until they’re large enough to be able to fend for themselves. Juvenile Komodo Dragons will eat insects, small lizards, eggs, birds, and whatever prey it can find in the trees.

Status

Komodo Dragons are considered an endangered species. They’re populations are diminishing due to volcanic activity of their habitat and loss of its base prey. Poaching of prey species and tourism are having an impact on their environment. There are only 3,000 to 5,000 Komodo Dragons living in the wild.

Source: http://www.thenew7wondersoftheworld.com/

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