Archive image from page 162 of Current herpetology (2000). Current herpetology currenthe222420032004niho Year: 2000 ( SHIROMA—EFFECT OF MOUSE URINE ON HABU 45 Fig. 4. Map of the outdoor pen at the habu study section, Okinawa Prefectural Institute of Health and Environment. The squares on the map indicate the position of the traps. The squares with a circle represent the traps baited with mouse urine. Circle-less squares are blank traps. Arrows indicate the movements of habus at night on 11 August 1994. captured by both mouse urine and control traps. On 11 August 1994, six habus were observ
Archive image from page 162 of Current herpetology (2000). Current herpetology currenthe222420032004niho Year: 2000 ( SHIROMA—EFFECT OF MOUSE URINE ON HABU 45 Fig. 4. Map of the outdoor pen at the habu study section, Okinawa Prefectural Institute of Health and Environment. The squares on the map indicate the position of the traps. The squares with a circle represent the traps baited with mouse urine. Circle-less squares are blank traps. Arrows indicate the movements of habus at night on 11 August 1994. captured by both mouse urine and control traps. On 11 August 1994, six habus were observed in the outdoor pen between sunset and midnight (Fig. 4). Three of the six habus approached the traps baited with mouse urine directly from a distance of 2-3 m distance. They all stopped crawling in front of the traps, and stuck their head into the traps. But, soon after that, they pulled out their head from the traps and crawled away. The next morning, no habus were found in the traps baited with mouse urine. During the same night, another habu approached a blank trap and climbed onto the trap, then crawled away without paying apparent attention to the trap. The next morning, no habus were found in the blank traps. On 20 August, three habus were observed between sunset and midnight. Two of them approached, directly from a distance of 2-3 m, a trap baited with a live mouse and immediately entered the trap. The next morn- ing, two habus were found in this trap. No habus were captured by the blank traps. Goris and Terashima (1973) demonstrated that the habu uses its pit organs (infrared receptors) to a high degree to detect and capture prey. Hattori et al. (1999) studied the foraging behavior of habus by counting tongue flicks and stated that odor cues alone are sufficient to release prey-searching behavior in habus. Nevertheless, habus were not captured by traps baited with only odor cues extracted from rats (Hattori et al., 1999) or by traps baited with only odor of mouse u
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