Insights Into the Natural History of the Little Known Maned Rat Lophiomys imhausi through Examination of Owl Pellets and Prey Remains

D. Ogada
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Abstract

ABSTRACT Maned rat Lophiomys imhausi is a highly unusual, but very little known rodent that is endemic to East Africa. A population from the highlands of central Kenya was studied through analysis of owl pellets and prey remains, including one incidental observation. Over 28 months, 40 individual rats were documented, of which two were juveniles. The mean length of time between discovery of rat remains in any one owl territory was once every 5.3 months, and the maximum number of rats found in any single owl territory over one year was five. Maned rat density was low and was estimated at 1 rat/km2. Their lower altitudinal limit in Kenya is c. 1900 m, and eagle owls and humans are important predators. Maned rats are not uncommon in highly altered habitats and they may require poisonous plants in addition to Acokanthera spp. for anti-predator defense.
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通过对猫头鹰颗粒和猎物残骸的研究,深入了解鲜为人知的鬃鼠Lophiomys imhausi的自然史
毛鼠(Lophiomys imhausi)是一种非常罕见但鲜为人知的东非特有啮齿动物。通过分析猫头鹰的颗粒和猎物遗骸,包括一次偶然的观察,研究了肯尼亚中部高地的一个种群。在28个月的时间里,记录了40只老鼠,其中两只是幼鼠。在任何一个猫头鹰领地发现老鼠遗骸的平均时间间隔是每5.3个月一次,在任何一个猫头鹰领地发现的老鼠的最多数量是一年5只。毛鼠密度低,估计为1只/km2。它们在肯尼亚的海拔下限约为1900米,鹰、猫头鹰和人类是重要的捕食者。鬃鼠在高度改变的栖息地并不罕见,它们可能需要有毒的植物来抵御捕食者。
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