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Rhodesian giraffe : ウィキペディア英語版 | Rhodesian giraffe
The Rhodesian giraffe (''Giraffa camelopardalis thornicrofti'') is one of nine subspecies of giraffe. It is also known as Thornicroft’s giraffe 〔Fennessy, J. & Brown, D. 2010. Giraffa camelopardalis. In: IUCN 2013. IUCN Red List of Threatened Species. Version 2013.2. www.iucnredlist.org. Downloaded on 2 May 2014.〕 and Luangwa giraffe.〔Wilson, and Reeder. "Giraffa camelopardalis thornicrofti." Mammal Species of the World. Bucknell University, n.d. Web. 2 May 2014. 〕 It is considered to be geographically isolated, occurring only in Zambia’s South Luangwa Valley.〔Fennessy, Julian, et al. "Mitochondrial DNA analyses show that Zambia's South Luangwa Valley giraffe (Giraffa camelopardalis thornicrofti) are genetically isolated." African Journal of Ecology 51.4 (2013): 635-640.〕 An estimated 1,500 live in the wild, with no captive populations.〔"Giraffe – The Facts”. Giraffe Conservation Foundation. Retrieved 2010-12-21.〕 The lifespan of the Rhodesian giraffe is 22 years for males and 28 years for females.〔Berry, P. S. M., and F. B. Bercovitch. "Darkening coat colour reveals life history and life expectancy of male Thornicroft's giraffes." Journal of Zoology 287.3 (2012): 157-160.〕 The species was originally named after Harry Scott Thornicroft, a commissioner in what was then North-Western Rhodesia and later Northern Rhodesia. ==Description== Rhodesian giraffes are tall with very long necks. They have long, dark-colored tongues and skin-colored horns.〔Hassanin, Alexandre, et al. "Mitochondrial DNA variability in'' Giraffa camelopardalis'': consequences for taxonomy, phylogeography and conservation of giraffes in West and central Africa." Comptes rendus biologies330.3 (2007): 265-274.〕 Giraffes have a typical coat pattern, with regional differences among subspecies. The pattern consists of large, irregular shaped brown to black patches separated by white to yellow bands.〔 Male giraffes' coats darken with age, particularly the patches. The darkening of the coat has not been studied extensively enough to indicate absolute age, however it can estimate relative age of male Rhodesian giraffes.〔
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