宙吊り飛しょう法によるウンカ類飛しょうの実験的研究 : 第1報 トビイロウンカの飛しょうの特徴およびそれらに与える物理的環境条件の影響
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概要
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To elucidate the characters of flight and the effect of physical factors on them, adults of the brown planthopper were tethered for flight by attaching a fine glass pin to the dorsum of the thorax coloured with a water-colour paint. The flight can be classified from the viewpoint of its duration to the following 3 types : (1) continuous flight for several hr, (2) repeated flight of short period and (3) no flight. Most individuals belonged to the 1st type, suggesting that this planthopper had the ability of long-range migration. Live-weight of body decreased greatly during several hours from the beginning of flight and then the rate of decrease diminished. Rearing temperature in teneral period affected its duration. The higher the temperature, the shorter was the duration of the teneral period. Its duration in the fernale was about a day at 27.5℃ and several hours shorter in the male. Threshold temperature for flight was about 16.5℃ in average. Above this threshold, there was little variation in the duration of flight. The stronger the wind velocity, the shorter was the flight duration. Flight was stopped at over about 5.5m/sec of wind. The higher the relative humidity, the longer was the flight duration. Particularly at 85% RH, many individuals flew for more than 10hr. Average flight duration under the conditions of 27.5℃, 60% RH and the wind velocity of 3m/sec, was about 4hr, although individual variation was great. It is probable that such variations resulted from internal factors such as the quantity of energy source for flight, rather than from external structural differences. These results suggest that this species can migrate long distance during the rainy season in Japan, Tsuyu, when the temeprature is relatively low and the humidity is high.
- 日本応用動物昆虫学会の論文
- 1973-03-25
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関連論文
- 宙吊り飛しょう法によるウンカ類飛しょうの実験的研究 : 第1報 トビイロウンカの飛しょうの特徴およびそれらに与える物理的環境条件の影響
- トビイロウンカ第4,5回成虫期の飛しょう行動の日周期性
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