权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

Study in the life history, impact and control of introduced small Asian mongoose on Okinawa island, Ryukyu archipelago, thouthern part of Japan

日本北部琉球群岛冲绳岛引进亚洲小猫鼬的生活史、影响和控制研究

基本信息

批准号：
14580595
负责人：
OGURA Go
金额：
$ 2.11万
依托单位：
University of the Ryukyus
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2002
资助国家：
日本
起止时间：
2002 至 2004
项目状态：
已结题

项目摘要

We tried in confirming the results of the mongoose luring effect of scent to facilitate the development of effective trapping methods for mongoose populations with low population densities. The scents we used contained volatile fatty acids and gland lures, with the mongoose displaying most interest in the gland lures. We positioned exclusion fences for mongooses at the southern limit of the Yanbaru region and conducted the mongoose escape test accordingly. A metal fence with a height of 1200 mm and a smooth metal plate could block almost every mongoose. This fence was then selected as the most applicable among all the tested metal fences ; this is because outriggers are not attached on this fence and the fence dose not affects human activities. We have been investigating the preying effects of the mongoose on the native species by analyzing the contents in the digestive tract of mongooses caught in the northern part of Okinawa island. Lizards and other reptiles are abundantly preyed upon by the mongooses. Moreover, almost all reptiles are hunted to near extinction in forests in which mongooses have inhabited for more than 10 years. Apart from the reptiles, the mongoose extends its preys to include other species such as aves, mammals, amphibians and anthropoda. In fact, the mongoose feeds on all species of small-sized animals. Furthermore, it has become evident that relict species face the risk of extinction, such as Watase's shrew, Ryukyu robin, Okinawan tree lizard and Anderson's crocodile newt are being preyed upon by the mongoose as well. In addition, the mongoose is a host for zoonosis and is known to serve as an agent for the transmissions of leptospirosis. The high incidence rate of Okinawan mongoose serving as a host for leptospirosis has been confirmed.

本研究试图验证猫鼬气味诱集效果之结果，以促进猫鼬低密度族群之有效诱集方法之发展。我们使用的气味含有挥发性脂肪酸和腺诱饵，与猫鼬显示最感兴趣的腺诱饵。我们在Yanbaru地区的南部边界设置了猫鼬的隔离围栏，并相应地进行了猫鼬逃脱测试。1200毫米高的金属栅栏，加上光滑的金属板，几乎可以挡住每一只猫鼬。然后，在所有测试的金属围栏中选择该围栏作为最适用的围栏;这是因为该围栏上没有连接外伸支架，并且围栏不影响人类活动。通过分析在冲绳北方捕获的猫鼬消化道中的内容物，我们一直在调查猫鼬对当地物种的捕食作用。猫鼬大量捕食蜥蜴和其他爬行动物。此外，在猫鼬居住了10多年的森林中，几乎所有的爬行动物都被猎杀到濒临灭绝。除了爬行动物，猫鼬还将其猎物扩展到其他物种，如鸟类，哺乳动物，两栖动物和两栖动物。事实上，猫鼬以各种小型动物为食。此外，很明显，残存物种面临灭绝的危险，如渡濑的鼩鼱，琉球知更鸟，冲绳树蜥蜴和安德森的鳄鱼蝾螈也被猫鼬捕食。此外，猫鼬是人畜共患病的宿主，已知可作为传播钩端螺旋体病的媒介。冲绳猫鼬作为钩端螺旋体病宿主的高发病率已得到证实。