温度对黑肩绿盲蝽生长发育和繁殖的持续影响

Successive impacts of different temperatures on the growth,development and reproduction of Cyrtorhinus lividipennis over three generations

黑肩绿盲蝽(Cyrtorhinus lividipennis Reuter)是稻田重要害虫褐飞虱的主要天敌,人工饲养和大田释放黑肩绿盲蝽,能有效控制褐飞虱。在实验室研究了不同温度(19,23,27和31℃)对黑肩绿盲蝽生长发育和繁殖的连续3个世代的持续影响。结果表明,19℃条件下随着世代发展,雌若虫历期缩短,子代数量降低;31℃条件下随着世代发展,雌成虫寿命缩短,子代数量降低;其他温度对若虫存活率、雄若虫历期、雌虫体重、成虫寿命和子代数量持续影响不显著。试验结果说明在相对低温19℃和相对高温31℃下,黑肩绿盲蝽的生长发育和繁殖受到抑制。

Cyrtorhinus lividipennis is a key predator of the major rice pest the brown planthopper （ BPH） , Nilaparva-ta lugens.Biological control of BPH by C.lividipennis could be much more effective and feasible by improving the techniques of artificial breeding and field-releasing.In this study, the successive effects of different temperatures （19℃, 23℃, 27℃and 31℃） on the growth, development and reproduction of C.lividipennis were determined over three generations in the laboratory .The results showed that the female nymph duration was significantly shortened and the number of offspring decreased as generations developed at 19℃, the female adult longevity was shortened and the number of offspring reduced at 31℃;However , no obvious change on nymphal survival rate , female nymphal du-ration, female fresh weight, adult longevity and fecundity was found at other tested temperatures .Our results indica-ted the development and reproduction of C.lividipennis could be suppressed at 19℃and 31℃,which could provide a theoretical basis for artificial breeding and field-releasing of C.lividipennis.