著者

三谷 奈保 山田 千紘 小松 孝明

出版者

森林野生動物研究会

雑誌

森林野生動物研究会誌 (ISSN:09168265)

巻号頁・発行日

vol.40, pp.7-13, 2015-03-30 (Released:2018-04-01)

参考文献数

21

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市販の小型GPSロガー(GT-120)の精度と有用性について検証した.ハリネズミ4頭にGT-120および特定小電力無線を利用した発信器を装着し,そのうち3頭をラジオ・トラッキングにより再捕獲した.1分間隔でおよそ2日分以上の測位地点が得られた.また,巣の位置や休息時間を特定することが可能であった.GT-120を用いて,ラジオ・トラッキングに比較して著しく多い測位地点を省力的に得ることができた.ただし,留意すべきこととして,測位誤差が平均33.2±41.9m(SE)であった.

著者

三谷 奈保 諸澤 崇裕 山下 亮 喜岡 正吏 後藤 義仁 橋本 琢磨 北浦 賢次 山田 文雄 阿部 愼太郎 石川 拓哉

出版者

「野生生物と社会」学会

雑誌

野生生物と社会 (ISSN:24240877)

巻号頁・発行日

vol.2, no.1, pp.11-22, 2014-12-01 (Released:2017-06-16)

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The density of invasive alien mongooses on Amami-oshima Island has recently been controlled to a low level by trapping. Aiming for eradication, three dogs were specially trained to detect the location of the animals to improve the efficiency of trapping. The detection efficiency of the dogs was higher than the efficiency of sensor cameras and pipe-type kill traps in each area, which had different mongoose densities. It was also significantly higher in high density areas (p<0.05) and higher than those methods plus hair traps in lower density areas. Dogs could also contribute to capture by handlers. The capture rates of the dog handlers were lower than those of the pipe traps in higher densities areas. However, a mongoose was caught by a dog handler in an area where none had been caught in the past five years. It was revealed that detection dogs are a sensitive means that have the potential for capture by the handler. While it takes a few years to train a detection dog. The area that one pair of a detection dog and a handler could scan thoroughly in a year was estimated at 16-28 km^2. The utilization of detection dogs preferentially in extremely low density areas is considered to be efficient.