リュウキュウジャコウネズミ(Suncus mirinus var riukiuanus)の生息状況と行動

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Authors have obtained some findings on the behavior characteristics of the Ryukyu musk shrew (Suncus murinus var riukiuanus) from which Suncus has been domesticated as a laboratory animal. Shrews were captured on Tarama Island in the South-West Islands of Japan, in June and October of 1980, and in April 1981. Judging from the catch, seemed to shrews settle in the Fukugi woods running round the village and locomote mainly at night to seek for food (insects) . Number of captured shrews was smaller in April than in June and October. We have drawn an inference that their locomoting distance reduces in spring for the abundance of food. Transportation of the captured shrews has become highly successful mainly as the result of improvement with food and sheltering. We examined behaviors of the shrews in captivity. Their activity rhythm was basicly nocturnal, but they showed brief activity for eating and drinking at 2-3 hr. intervals even in the light period (daytime) . They tended to show the more distinct inhibition of activity during daytime in comparison with the domesticated shrews. They seemed to be less neophobic than the wild animals of rodent. In the outdoor enclosure, one pair of shrews survived after fierce aggression. The survivors showed scent-marking on the rocks within their home-range. Although the shrews do not build the resting nest in usual, they showed nest-building when the temperature fell below 10°C. They passed the winter alive in the ball-like nest of 10 cm in diameter.
日本哺乳類学会の論文

リュウキュウジャコウネズミ(Suncus mirinus var riukiuanus)の生息状況と行動

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