Tuesday, January 1, 2013

Bengal Tiger a Endangared Animal Species


Bengal tiger (Panthera tigris tigris) is a subspecies of tiger which most. Population has been estimated from 1.706 to 1.909 in India, 440 in Bangladesh, 124-229 in Nepal and 67-81 in Bhutan. Since 2010, has been classified as an endangered species by the IUCN. Total population is estimated at less than 2,500 individuals with a decreasing trend, and there is no Tiger Conservation Landscape in Bengal tiger range is large enough to support the effective population size of 250 adult individuals.

A Bengal tiger in Bannerghatta National Park, India
Bengal is traditionally fixed as the typical region for the binomial Panthera tigris, which the British taxonomy Pocock subordinated the Bengal tiger in 1929 Panthera tigris tigris under trinomial option.

Bengal tiger mantle yellow to light orange, with lines ranging from dark brown to black, belly and the interior portion of the body is white, and orange tail with black rings.
Male Bengal tigers have an average total length 270-310 cm (110 to 120), including the tail, while female size 240-265 cm (94-104 in) on average. The tail is usually 85-110 cm (33 to 43) in length, and the average, 90 to 110 tigers cm (35 to 43) in height at the shoulder. The average weight of males is 221.2 kg (488 lb), while females is 139.7 kg (308 lb). Weight of the smallest recorded for Bengal tigers from the Sundarbans of Bangladesh, where the adult female 75-80 kg (170-180 lb).

A white Bengal tiger at Cougar Mountain Zoo
White tiger is a recessive mutant of the Bengal tiger, reported in the wild from time to time in Assam, Bengal, Bihar and especially from former National Rewa. However, do not be confused as the occurrence of albinism. In fact, there is only one fully authenticated case of a true albino tiger, and no black tigers, with the possible exception of a dead specimen
examined in Chittagong in 1846.

In 1982, a middle Falang exact sub-fossil discovered in prehistoric Midden near Kuruwita in Sri Lanka, which is dated around 16,500 YBP and tentatively considered tiger. Tiger seems to have arrived in Sri Lanka for a period of pluvial where surface waters suffer from depression, it is clear before the latest glacial maximum about 20,000 years ago. In 1929, the British taxonomy Pocock assumed that tigers arrived in India too late to colonize southern Sri Lanka, which had previously been connected to India by a land bridge.

In the Indian subcontinent, tigers inhabit moist tropical pine forest, tropical dry forest, tropical forest and subtropical moist deciduous, mangrove forest, subtropical plateau and are being, and alluvial grasslands. The last tiger habitats ever cover a large swath meadows and streams and moist semi-leaf forests along the major river systems Ganges and Brahmaputra plains, but now mostly been converted into agricultural land or severely damaged. Currently, the best example of the type of habitat limitated for several blocks at the base of the foothills of the outer Himalayas including the Tiger Conservation Unit (TCU) Rajaji-Corbett, Bardia, Banke, and the transboundary TCU Chitwan-Parsa-Valmiki, Dudhwa-Kailali and sukla Phanta-Kishanpur. Tiger densities in these blocks high, partly a response to the extraordinary biomass ungulata victims.



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