Effects of Low Temperature on Growth,Development and Fecundity of Apolygus lucorum(Hemiptera:Miridae)
To investigate the effect of low temperature on the growth,development and reproduction of Apolygus lucorum,we measured the nymph development,adult lifespan and fecundity in the labo-ratory under low temperature stress(0,5,10 and 15 ℃).The results showed that the eclosion rate of nymph decreased significantly with decreasing temperature.Most nymph died before eclosion at 0 ℃ and 5 ℃,and the eclosion rate at 10 ℃ and 15 ℃ was 19.10％and 75.71％of that at 26 ℃,respective-ly.The duration of nymph at low temperature was significantly prolonged.The duration of nymph at low temperature of 10 ℃ and 15 ℃ was 1.80 and 1.33 times that of control at 26 ℃,respectively.From 0 ℃ to 26 ℃,the longevity of male and females first increased and then decreased with increas-ing temperature,reaching the highest value at 10 ℃,which were 31.75 days and 30.61 days,respec-tively.The number of eggs laid by female and the rate of egg hatching decreased significantly with de-creasing temperature.The oviposition of A.lucorum at 5 ℃,10 ℃ and 15 ℃ was 3.92％,34.53％and 51.56％of the control at 26 ℃,respectively.No eggs hatched at 5 ℃,and the hatching rate at 10 ℃ and 15 ℃ was 8.12％and 21.36％of that at 26 ℃,respectively.All the results showed that low tem-perature inhibited the eclosion of A.lucorum nymph,and the degree of inhibition increased with the decrease in treatment temperature.At the same time,low temperature also suppressed adult reproduc-tion,and the degree of inhibition increased with decreasing temperature.
Apolygus lucorumLow temperatureGrowth and developmentReproductive parameter
万方数据
维普
