南北种群稻螟赤眼蜂的寄生力、飞行能力和耐药性评价  

Evaluation of Fecundity, Flight Ability and Insecticide Tolerance of Southern and Northern Trichogramma japonicum Populations

作　　者：田俊策[1] 王子辰[1] 王国荣[2] 郑许松[1] 臧连生[3] 吕仲贤[1] 

机构地区：[1]浙江省植物有害生物防控省部共建国家重点实验室培育基地/浙江省农业科学院植物保护与微生物研究所,杭州310021 [2]杭州市萧山区农业局,杭州211203 [3]吉林农业大学生物防治研究所,长春130118

出　　处：《中国生物防治学报》2017年第1期32-38,共7页Chinese Journal of Biological Control

基　　金：国家重点研发计划(2016YFD0200800);国家水稻产业技术体系(CARS-01-17);浙江省植物有害生物防控省部共建国家重点实验室培育基地自主设计项目(2010DS700124-ZZ1601);国家"973"计划(2013CB127600);浙江省重点研发计划(2015C02G4010053)

摘　　要：选择合适的赤眼蜂种群是其成功利用的基础。本研究评价稻螟赤眼蜂南北种群的寄生力(每头雌蜂寄生寄主的卵数)、飞行能力和对稻田非鳞翅目害虫靶标农药的耐药性。结果显示高温(32℃、36℃)下,南方种群的稻螟赤眼蜂对米蛾卵的寄生力为26.6粒和9.5粒,显著高于北方种群的11.7粒和4.0粒。而2个种群对稻纵卷叶螟卵的寄生无显著差异。稻螟赤眼蜂的起飞比例随着温度的升高而升高;但在高温(34℃)下,南方种群稻螟赤眼蜂的起飞比例为57.0%,显著高于北方种群的20.4%。2个种群的稻螟赤眼蜂对井冈霉素、三唑酮和吡蚜酮的耐药性无显著性差异,但毒死蜱对南方种群LC50为0.382 mg/L,显著高于北方种群的0.046 mg/L。因此,在南方稻区应选择南方种群用于稻田鳞翅目害虫的防治。Appropriate Trichogramma population is a key factor for successful Trichogramma release for control of Lepidopteran pests. In the present study, we evaluated fecundity, flight ability and insecticide tolerance of T. janponicum Ashemead. The results showed that under high temperatures （32 ℃ and 36 ℃）, fecundity of a southern population on Corcyra cephalonica eggs was 26.6 and 9.5, respectively, significantly higher than those of a northern population （11.7 and 4.0, respectively）. However, there was no significant difference in fecundity of T. japonicum on Cnaphalocrocis medinalis eggs between the two populations. As temperature increased, the proportion of flying wasps increased. At 34 ℃, the proportion of flying wasps in the southern population was 57.0%, which was significantly higher than that （20.4%） in the northern population. Tolerances of T. japonicum to validamycin, triadimefon and pymetrozine were not significantly different between the two populations. However, LC50 to chlorpyrifos in the southern population was 0.382 mg/L, which was significantly higher than that （0.046 mg/L） in the northern population. Therefore, the southern population of T. japonicum is a better choice for biological control Lepidopteran pests in southern China.

关 键 词：稻螟赤眼蜂 稻纵卷叶螟 生物防治 地理种群 

分 类 号：S476.3[农业科学—农业昆虫与害虫防治]