|
Jackson's mongoose (''Bdeogale jacksoni'') is a species of mongoose belonging to the genus ''Bdeogale''. Discovered in 1889 by Frederick John Jackson, Oldfield Thomas in 1894 described it as ''Galeriscus jacksoni''. It is most closely related to the black-footed mongoose of the same subgenus ''Galeriscus'' and both are sometimes united in a single species. With a head and body length of more than and a body weight of , it is a large mongoose. Its long and dense fur is grizzled black and white, the cheeks, the throat and the sides of the neck are very yellowish, the legs are dark brown or black, and the bushy tail is white. Jackson's mongoose feeds on rodents and insects, especially on army ants, and is mainly nocturnal and crepuscular and possibly solitary. Its distributional range in Kenya, Uganda and Tanzania is limited to some arboreous mountain regions. It appears to be rare, and in 2008, the IUCN classified it as Near Threatened. == Body features == Jackson's mongoose is a large mongoose with a bushy tail. Its head and body length is , its tail length is 28.3 to 32.4 centimeters, its hind foot length is 8.6 to 10.8 cm, its ear length is 2.3 to 3.5 cm and its body weight is 2–3 kg.〔 Young but already breeding animals may be markedly smaller than adults. From the black-footed mongoose, it is distinguishable by its much longer fur, especially on the tail, and yellowish tints on the neck and the throat.〔 The long and dense dorsal fur is grizzled black and white. The dorsal hairs are long with black and white rings. The muzzle and the chin are brownish white and the cheeks, the throat and the sides of the neck are very yellowish. The legs are dark brown or black and the tail is white. The ventral side is light gray and the underfur is dense and woolly. The pinnae are round and broad and the muzzle is blunt. The rhinarium is large, and the hairless extension of the median groove divides the upper lip. The fore and hind feet have only four digits. A hallux and pollex are absent as is common with ''Bdeogale''. The soles are naked, and the claws are thick and strong.〔 The dentition of Jackson's mongoose is typical for mongooses. Three incisors, one canine, four premolars and two molars are on either side of each jaw. The total number of teeth is 40 and the dental formula is .〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Jackson's mongoose」の詳細全文を読む スポンサード リンク
|