Neoseiulus californicus preying on Tenuipalpus heveae

ABSTRACT The spread of Tenuipalpus heveae Baker (Acari: Tenuipalpidae) can be controlled by managing predatory species such as Neoseiulus californicus (McGregor) (Acari: Phytoseiidae). This study aimed to evaluate the predation of N. californicus at different biological phases on T. heveae at different development stages. The experiments were carried out under laboratory-controlled conditions, counting the number of predated individuals by development stage after 24, 48 and 72 h. N. californicus, in all phases, consumed T. heveae, with a higher consumption of nymphs and larvae by adult predators. Both sexes of adult predators exhibited predation efficiency, but females showed a greater acceptance of adult preys than males. The daily rate of adult predation decreased over time; however, the highest consumption took place in the first 24 h.

摘要：橡胶短须螨（Tenuipalpus heveae Baker，蜱螨亚纲：短须螨科（Tenuipalpidae））的种群扩散可通过管控智利小植绥螨（Neoseiulus californicus (McGregor)，蜱螨亚纲：植绥螨科（Phytoseiidae））等捕食性物种进行防控。本研究旨在评估不同发育阶段的智利小植绥螨对不同发育阶段橡胶短须螨的捕食效能。实验于实验室可控条件下开展，分别统计24 h、48 h及72 h后对应各发育阶段猎物的被捕食个体数量。各发育阶段的智利小植绥螨均可取食橡胶短须螨，其中成年捕食者对若螨与幼螨的捕食量更高。成年捕食者的雌雄两性均表现出捕食效能，但雌性相较于雄性对成年猎物的接受度更高。成年捕食者的日捕食量随时间推移逐渐降低，但最高捕食量出现在最初的24小时内。