温度对绿翅绢野螟4龄幼虫CO_2释放率的影响

Effects of temperature on the CO_2 release rate of the 4^(th) instar larvae of Diaphania angustalis

以广西大学东校园内糖胶树(Alstonia scholaris L.)上的绿翅绢野螟(Diaphania angustalis(Snellen))4龄幼虫为研究对象,就温度对绿翅绢野螟4龄幼虫呼吸代谢的影响进行了研究.结果表明:随着温度的变化,绿翅绢野螟4龄幼虫的CO_2释放速率变化明显,在15和35℃条件下幼虫CO_2释放率极差异显著(P<0.01);而在20~30℃之间变化幅度小,差异不显著(P>0.01).同时,确定了绿翅绢野螟4龄幼虫呼吸速率对温度的敏感性,发现在20~30℃条件下其温度系数Q_(10)值最小.由此说明20~30℃是绿翅绢野螟4龄幼虫生长发育最适宜的温度范围.

The effects of different temperature on the respiratory metabolism of the 4^th instar larvae of Diaphania angustalis were studied.The insects were collected from Alstonia scholaris L.on the east campus of Guangxi University.The results showed that the CO2 release rate of the 4^th instar larvae of Diaphania angustalis changed obviously in different temperatures.The release rate of CO2 at 15 ℃ and 35 ℃ were significantly different from that at the other temperatures（P〈0.01）.In the range of 20 ℃ to 30 ℃,however,the CO2 release rates of the 4^th instar larvae of Diaphania angustalis changed within a small range,which were not significant（P〈0.01）.The sensitivity of respiration rate of insects to temperature was also calculated.Within 20 ℃ to 30 ℃,the value of Q（10） was minimum.It was concluded that the temperature range between 20 ℃ to 30 ℃ was the optimal condition for the growth and development of the 4-（th） instar larvae of Diaphania angustalis.