Bactrian camel
| Bactrian Camel | |
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| Species: | C. bactrianus
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| Camelus bactrianus | |
| File:Leefgebied kameel.jpg | |
| Bactrian Camel range | |
The Bactrian Camel (Camelus bactrianus) is a large even-toed ungulate native to the steppes of eastern Asia. The Bactrian camel has two humps on its back, in contrast to the Dromedary, also known as the Arabian Camel, which has one. For a memory aid the B of bactrian can be imagined as a graphic of two humps and the D of Dromedary can be imagined as a graphic of one hump.
Nearly all of the estimated 1.4 million Bactrian Camels alive today are domesticated, but in October 2002 the estimated 950 remaining in the wild in northwest China and Mongolia were placed on the critically endangered species list.[1]
Physical characteristics and habitat
Bactrian Camels are over 2 meters (7 feet) tall at the hump and weigh in excess of 725 kg (1,600 lb). They are herbivores, eating grass, leaves, and grains, capable of drinking up to 120 litres (32 US gallons) of water at a time. In the wilds of Mongolia, this is usually in the form of ice or snow eaten in small but frequent amounts [2]. Their mouths are extremely tough, allowing them to eat thorny desert plants.
They are supremely adapted to protect themselves against the desert heat and sand, with wide, padded feet and thick leathery pads on the knees and chest, nostrils that can open and close, ears lined with protective hairs, and bushy eyebrows with two rows of long eyelashes. Thick fur and underwool keep the animal warm during cold desert nights and also insulate against daytime heat.
The Dromedary (Camelus dromedarius) is the only other surviving camel, native to the Sahara desert, but today is extinct in the wild. By comparison, the Bactrian Camel is a stockier, hardier animal able to survive the scorching desert heat of northern Iran to the frozen winters in Tibet [3]. The Dromedary is taller and faster, and with a rider it can maintain 8–9 mph for hours at a time. A loaded Bactrian Camel moves at about 2.5 mph [4]. Bactrain camels are also found in Hunder Sand Dunes in Nubra Valley, Ladakh. There are approx 2000 camels in Nubra.
History
It is thought that the Bactrian Camel was domesticated (independently from the Dromedary) sometime before 2500 BC[5], probably in northern Iran, Northeast Afghanistan[5] and Northern Pakistan or southwestern Turkestan[citation needed]. The Dromedary is believed to have been domesticated between 4000 BCE and 2000 BCE[6] in Arabia. The wild population of Bactrian Camels was first described by Nikolai Przhevalsky in the late 19th century.
Subspecies
There is some evidence that the Bactrian Camel can be divided up into different subspecies. In particular, it has been discovered that a population of wild Bactrian Camel lives within a part of the Gashun Gobi region of the Gobi Desert. This population is distinct from domesticated herds both in genetic makeup and in behavior. However, the significance of those differences has not yet been demonstrated.
There are possibly as many as three regions in the genetic makeup that are distinctly different from domesticated camels and there is up to a 3% difference in the base genetic code. However, with so few wild camels, it is unclear what the natural genetic diversity within a population would have been.
Canadian Researcher William Sommers found that these wild camels had the ability to drink saltwater slush, although it is not yet certain the camel can extract useful water from it. Domesticated camels do not attempt to drink salt water, though the reason is unknown.
Gallery
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Paignton Zoo -
Belgian Zoo
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A Bactrian camel “smiles” -
Two Bactrian camels -
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Gurvansaikhan NP, Mongolia -
A Bactrian camel in the snow
References
- ^ Template:IUCN2006 Database entry includes justification for why this species is critically endangered
- ^ "Planet Earth Deserts". Retrieved April 29.
{{cite web}}: Check date values in:|accessdate=(help); Unknown parameter|accessyear=ignored (|access-date=suggested) (help) - ^ "Creature Features - Pet Facts: Camels". Retrieved December 5.
{{cite web}}: Check date values in:|accessdate=(help); Unknown parameter|accessyear=ignored (|access-date=suggested) (help) - ^ "Camel". Retrieved December 5.
{{cite web}}: Check date values in:|accessdate=(help); Unknown parameter|accessyear=ignored (|access-date=suggested) (help) - ^ a b "camel." Encyclopædia Britannica. 2007. Encyclopædia Britannica Online. 11 Feb. 2007 <[1]>.
- ^ Al-Swailem et al. 2007. Classification of Saudi Arabian camel (Camelus dromedarius) subtypes based on RAPD technique.Journal of Food, Agriculture & Environment Vol.5 (1) : 143-148. Online pdf
External links
- EDGE of Existence Programme
- EDGE Species
- EDGE of Existence (Camelus bactrianus) - Saving the World's most Evolutionarily Distinct and Globally Endangered (EDGE) species
- National Geographic - Wild Bactrian Camels Critically Endangered
- Wild Camel Protection Foundation
- BBC - Discovery of camels in the Gashun Gobi region