Effects of breeding host plants on the biocontrol potential of Encarsia sophia against whitefly pests
To assess the biocontrol potential of parasitoid wasp Encarsia sophia reared on yacon(Small-anthus sonchifolius)as a host plant,the size measurements,mortality rate,offspring development time,and offspring emergence rate of E.sophia reared on yacon against Bemisia tabaci(Mediterranean popu-lations)and Trialeurodes vaporariorum were evaluated.The results showed that the head width,body length,and hind tibia length of E.sophia females and males reared on yacon were significantly larger than those reared on tomato.Additionally,the number of B.tabaci and T.vaporariorum killed by E.so-phia reared on yacon(24.7 and 25.0 nymphs,respectively)was significantly higher than those reared on tomato(21.4 and 21.0 nymphs).The developmental time of E.sophia reared on yacon and parasitizing B.tabaci and T.vaporariorum nymphs was significantly shorter(13.2 and 12.5 days,respectively)com-pared to those reared on tomato.Moreover,the emergence rate of E.sophia reared on yacon and parasit-izing B.tabaci and T vaporariorum nymphs was significantly higher(84.1％and 86.9％,respectively)than those reared on tomato.It indicated that compared to E.sophia reared on tomato,E.sophia reared on yacon exhibits significantly enhanced biocontrol potential against B.tabaci and T.vaporariorum,re-spectively.
万方数据
维普
