柑桔品种对柑桔潜叶蛾实验种群的影响

Effects of citrus varieties on the experimental population of citrus leaf-miner Phyllocnistis citrella Staiton (Lepidoptera: Phyllocnistidae)

研究了 4个柑桔品种对柑桔潜叶蛾 (Phyllocnistis citrella Staiton)实验种群的影响 .结果表明 ,在各柑桔品种上柑桔潜叶蛾从卵到蛹的发育历期、存活率 ,雌成虫产卵量、产卵动态、寿命和种群生命表参数都存在明显差异 ;供试品种对潜叶蛾抗性的强弱顺序为 :福桔 >蕉柑 >雪柑 >芦柑 .福桔上潜叶蛾存活率为 2 2 .97%、产卵量 2 0 .91粒·雌 -1,均比其它 3个品种上的低 ;发育历期为 19.5 8d,比其它品种上的长 ;种群生命表参数中 ,内禀增长率为 0 .0 72 1、周限增长率为 1.0 75 d-1,均比其它品种上的低 ,世代平均历期为 2 1.5 d,比其它品种上的长 。

The effects of citrus varieties on the population of citrus leaf miner (CLM) Phyllocnistis citrella Staiton (Lepidoptera: Phyllocnistidae) were studied based on the indoors experiments. The results showed that there were significant differences in developmental duration of immature stage from eggs to pupae, survival of larvae, emergency ratio of pupae, fertility and longevity of female adults and life table parameters among the tested varieties. For the CLM on Citrus tangerina Hort.ex Tannaka, compared with that on the other 3 tested varieties ( C.s sinesis Osbeck, C.tangerina Blanco and C.tankan Hayata), the developmental duration (19.58 d) was the longest; the fertility (20.91 individuals per female) was the lowest; longevity of female adult (6.96 d) was the shortest. The intrinsic rate for population increase ( r m =0.0721) and infinite rate of increase (λ=1.075 d -1 )were the least, the mean length of generation (T=21.5 d) was the longest. Consequently, C.tangerina Hort.ex Tannaka is obviously resistant and C.s sinesis Osbeck, and C.tangerina Blanco are rather susceptible to citrus leaf miner.