棉铃虫成虫期的呼吸代谢及其能量消耗

RESPIRATORY METABOLISM OF THE ADULTS OF THE COTTON BOLLWORM,HELIOTHIS ARMIGERA,AND ITS ENERGY EXPENDITURE

在25℃下,用Gilson示差呼吸计测定了棉铃虫成虫期静止时的呼吸代谢。雌、雄蛾在整个生活期间的代谢速率(微升O_2/毫克鲜重/小时)都呈“U”型曲线变化,并有明显的昼夜节律。同时还测定棉铃虫成虫在不同温度下、在取食后、在黑暗条件下、在饥饿和飞翔期同的耗氧量。根据测定资料估测,在25℃下,棉铃虫雌雄成虫一生在静止时平均消耗氧气分别约为66.0毫升和72.5毫升。由于棉铃虫蛾期的平均呼吸商是0.94,所以成虫一生通过呼吸消耗的能量约在1,400焦耳或330卡(雌蛾)和1500焦耳或360卡(雄蛾)左右,还不到它们一生在活动和静止时通过呼吸消耗的总能量的1/4。

Respiratory metabolism of resting moths of the cotton bollworm (H. armigera) was determined at 25℃ with a Gilson Differential Respirater. Metabolic rates (μlO2/mg wet weight/h) of both females and males throughout their lives exhibited U-shaped curves and showed marked circadian rhythms. Oxygen consumption of these moths was also measured at different temperatures, after feeding, in the dark, during hungry and flying periods. It was estimated that the resting female and male adults consumed, on the average, about 66.0 ml and 72.5 ml O2 respectively in their whole life spans at 25℃. Since they had a mean respiratory quotient of 0.94 the energy lost through respiration was about 1400 Joules (J) or 330 Calories(Cal) for female and 1500 J or 360 Cal for male, which were less than 1/4 of their total respiration expenditure when they were active and at rest.