Abstract：
The goji berry psyllid, Bactericera gobica Logniova (Homoptera: Psyllidae), is one of the most important pests on goji berry plants (Lycium barbarum L.), whose fruits are widely used in traditional Chinese medicine and food. However, chemical control is still the predominant control strategy of this pest. Recently, two species of predatory mites, Neoseiulus setarius Ma, Meng & Fan and Neoseiulus barkeri Hughes were found to be associated with B. gobica in China. To assess their predation potential against B. gobica, the functional responses of these two phytoseiid species feeding on different densities (2, 4, 8, 12, 16, 24 and 32 individuals) of B. gobica eggs and 1st instar nymphs were compared at a temperature of 25ºC ± 1º C. Logistic regression analysis revealed that both predatory mite species exhibited type Holling-II functional responses on eggs and 1st instar nymphs of B. gobica, with the predation number increased for both predators as the density of prey increased. Overall, N. setarius consumed more prey compared to N. barkeri across all levels of prey densities. Meanwhile, the highest attack rate (α = 0.0283), the lowest handling time (Th = 1.1324 h prey- 1), and the highest estimated maximum predation rate (T/Th = 21.19 prey day- 1) were all observed for N. setarius fed with 1st instar nymphs of B. gobica. These findings suggest that it is worthy considering utilizing N. setarius and N. barkeri as candidate biocontrol agents of B. gobica, with N. setarius appearing to be a more effective predator than N. barkeri.
摘要：
枸杞木虱,gobicaLogniova细菌（同翅目：Psyllidae），是枸杞植物（枸杞）上最重要的害虫之一，其水果广泛用于中药和食品。然而,化学控制仍然是这种害虫的主要控制策略。最近,两种掠食性螨，马新毛，在中国发现Meng＆Fan和NeoseiiulusbackeriHughes与B.gobica有关。为了评估它们对B.gobica的捕食潜力，在25ºC±1ºC的温度下，比较了这两种以不同密度（2、4、8、12、16、24和32个个体）为食的植物性螨物种和1龄若虫的功能反应。Logistic回归分析显示，两种捕食性螨物种对高贝哥的卵和1龄若虫均表现出Holling-II型功能反应，随着猎物密度的增加，两个捕食者的捕食次数都增加。总的来说,在所有猎物密度水平上，与N.barkeri相比，N.setarius消耗更多的猎物。同时,攻击率最高(α=0.0283)，最低处理时间(Th=1.1324hprey-1)，和最高的估计最大捕食率（T/Th=21.19捕食天-1）都是用1龄若虫喂养的。这些发现表明，值得考虑使用N.setarius和N.barkeri作为B.gobica的候选生物防治剂，Setarius似乎是比N.Barkeri更有效的捕食者。
