Journal of Northern Agriculture ›› 2024, Vol. 52 ›› Issue (4): 94-102.doi: 10.12190/j.issn.2096-1197.2024.04.10

• Plant protection·Horticulture • Previous Articles     Next Articles

Study on the predatory function of lambda-cyhalothrin resistance and sensitive strains of Neoseiulus barkeri to Tetranychus urticae

LI Xia1, Wuen2, ZHAO Wenjun3, LI Zhiping2, LI Guiying4, GUO Xiaoqing2, ZHANG Xiaohong5, CHANG Jing1   

  1. 1. College of Horticulture and Plant Protection, Inner Mongolia Agricultural University, Hohhot 010018, China;
    2. Inner Mongolia Agriculture and Animal Husbandry Technology Promotion Center, Hohhot 010020, China;
    3. The School Affiliated to Inner Mongolia Agricultural University, Hohhot 010018, China;
    4. Hohhot Agriculture and Animal Husbandry Technology Promotion Center, Hohhot 010010, China;
    5. Bayannur Modern Agriculture and Animal Husbandry Development Center, Bayannur 015001, China
  • Received:2024-05-10 Online:2024-08-20 Published:2024-11-22

Abstract: 【Objectives】To clarify the predatory function of Neoseiulus barkeri lambda-cyhalothrin resistant and susceptible strains on Tetranychus urticae and explore its potential for prevention and control.【Methods】The predatory function and searching efficiency of lambda-cyhalothrin resistance and sensitive strains of Neoseiulus barkeri female adult mite against Tetranychus urticae eggs,nymphs and adult mites were determined by observation units methods under laboratory conditions.【Results】The predatory function types of the lambda-cyhalothrin resistance and sensitive strains of Neoseiulus barkeri against Tetranychus urticae were all Holling-II,and the predation amount of eggs,nymphs and adult mites of Tetranychus urticae had the same change trend,which increased with the increase of prey density,and the predation amount reached the maximum and then tended to be balanced. The handling time of the resistant strain to Tetranychus urticae eggs and adult mites was 0.017 7 d and 0.026 9 d respectively,which were shorter than the sensitive strain(0.018 8 d and 0.029 5 d);and the attack rates were 2.253 6 and 1.158 6,respectively,which were faster than the sensitive strain(2.302 9 and 1.629 2). The predation ability(a/Th) and searching efficiency of the resistance strain to Tetranychus urticae eggs and adult mites were better than the sensitive strain.【Conclusion】The lambda-cyhalothrin resistant strain of Neoseiulus barkeri has very good predation ability to Tetranychus urticae eggs and adult mites,and can be used together with reducing chemicals to control Tetranychus urticae in the field.

Key words: Neoseiulus barkeri, Resistance strain, Sensitive strain, Tetranychus urticae, Predatory function, Searching efficiency

CLC Number: 

  • S481.1