南方水稻黑条矮缩病对非介体褐飞虱生长发育和繁殖的影响

摘要

Southern rice black streaked dwarf virus (SRBSDV) is a novel rice dwarf disease occurred in recent years, and SRBSDV is transmitted by white-backed planthopper ( WBPH ) , Sogatella furcifera ( Horvath) . The brown planthopper ( BPH) , Nilaparvata lugens ( Stal) , a non-vector of SRBSDV, often occurs after the WBPH, in paddy ecosystem. The effects of SRBSDV-infected rice plants on the development and reproduction of BPH were investigated in laboratory herein. The results showed that the nymph development duration, premature period survival rate, premature period, pre-ovipositing period, ovipositing period, hatchability of BPH fed on SRBSDV-infected rice plants did not significantly differ from those on healthy plants, whereas the adult longevity and fecundity obviously decreased. Also, the net reproductive rate (Ro) and the intrinsic rate of increase (Tm) decreased. Therefore, the SRBSDV-infected rice plants may inhibit the development and reproduction of BPH.%由白背飞虱传播的南方水稻黑条矮缩病SRBSDV对水稻的生产造成了严重的威胁.在稻田生态系统中,褐飞虱发生于白背飞虱之后.为了探明SRBSDV对非介体稻褐飞虱的影响,我们在室内进行了感染南方水稻黑条矮缩病毒的水稻对非介体褐飞虱生长发育、成虫寿命及生殖力等影响的研究.结果表明:非介体褐飞虱在感染南方水稻黑条矮缩病毒的水稻上取食后,若虫发育历期、成虫前期存活率、成虫前期、成虫产卵前期、产卵期和卵孵化率无显著差异,但成虫寿命与产卵量显著减少,净生殖率和内禀增长率减小,说明感染南方水稻黑条矮缩病毒的水稻对褐飞虱生长发育和繁殖有一定的抑制作用.