Crop Damages Caused by Spatial Movements of Japanese Macaques in the Kameyama Hills of Mie Prefecture, Japan

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  • 三重県亀山丘陵におけるニホンザルの行動特性と猿害
  • ミエケン カメヤマ キュウリョウ ニ オケル ニホンザル ノ コウドウ トクセイ ト エンガイ

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This paper examines the relationships between the movements of Japanese macaques and crop damage. The study area was the Kameyama Hills in the southern Suzuka Mountains located in the northwestern part of Mie prefecture. One group of macaques was followed using radio-tracking for 25 days in August 2005, which was the crop harvest season. Based on maps of the daily movement routes, the damaged crops were recorded. In addition, data were gathered through interviews of farmers whose crops were damaged.<br>It was found that the macaques moved along the forest extending into the rice paddies or dry fields near their dwelling places. Therefore the damaged areas were located near the forest edge, and the damage was less with increasing distance from the forest. When there were persimmon and chestnut trees near the forest, the monkeys tended to visit often and eat the crops around the trees.<br>On the other hand, where defense nets were set up with fireworks to scare the macaques, there was little crop damage.<br>It is suggested that the macaque routes are considered when deciding which areas should remain forested to reduce the crop damage caused by them.

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