オオナガレトビケラ(トビケラ目 ; ナガレトビケラ科)幼虫の呼吸量に及ぼす流速と温度の影響  [in Japanese] Influence of water flow and water temperature on the respiratory rate of larval Himalopsyche japonica (MORTON) (Trichoptera : Rhyacophilidae)  [in Japanese]

Respiration rates of larvae of the caddis fly Himalopsyche japonica (MORTON) were measured at constant water temperatures (5℃, 10℃ or 15℃) in flowing or standing water. The respiration rates in flowing water were correlated with the water temperature, whereas in standing water the rates were lower and were not correlated with temperature. It was suggested that the oxygen consumption of H.japonica larvae was higher than that of other aquatic insect larvae. Moreover, H.japonica larvae did not show any ventilatory behaviour such as abdominal undulation in standing water and were damaged physiologically. These results suggest that the larvae cannot survive in standing water or low flow conditions.