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journal1 ›› 2019, Vol. 35 ›› Issue (3): 374-381.DOI: 10.16409/j.cnki.2095-039x.2019.03.009

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Prey Preference and Diffusion Behavior of Neoseiulus californicus (McGregor) (Acari: Phytoseiidae)

WU Jiawei, LI Qing   

  1. College of Agronomy, Sichuan Agricultural University, Chengdu 611130, China
  • Received:2018-08-24 Online:2019-06-08 Published:2019-06-17

Abstract: Preference of Neoseiulus californicus (McGregor) for different stages (larva, nymph, female adult) and web-nest of Panonychus citri (McGregor) and the factors affecting the predator diffusion were investigated. The results showed that N. californicus preferred the most for the intact web-nest of P. citri. The predators were significantly attracted to the prey web since 1 h after the starting of evaluation, with the highest rate 78.3% reaching at the 3 h time point over a 5-h observation. The female adult, nymph, and young P. citri mites attracted N. californicus at varying rates, the highest being 76.67%, 71.67%, and 68.33%, respectively. Diffusion behaviors of N. californicus were examined in association with P. citri density and with different feeding experience. Diffusion rate of N. californicus was positively correlated with the initial prey egg density. Starvation and high density of the predator enhanced diffusion. Diffusion rate also differed between stages, lower in the female nymphs than in the female adults.

Key words: Neoseiulus californicus, Panonychus citri, search function, dispersal

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