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journal1 ›› 2019, Vol. 35 ›› Issue (3): 364-373.DOI: 10.16409/j.cnki.2095-039x.2019.03.002

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Population Growth Development, Fecundity and Predation Rate of Neoseiulus californicus (McGregor) (Acari: Phytoseiidae) Sichuan Strain Fed on Tetranychus cinnabarinus Boisduval (Acari: Tetranychidae) Based on Two-sex Life Table

JIANG Chunxian1, SHUI Ling1, PU Po2, LI Qing1   

  1. 1. College of Agronomy, Sichuan Agricultural University, Chengdu 611130, China;
    2. Plant Protection State, Department of Agricultural Sichuan Province, Chengdu 610041, China
  • Received:2019-01-10 Online:2019-06-08 Published:2019-06-17

Abstract: In order to comprehensively understand the population characteristics of Neoseiulus californicus (McGregor) Sichuan strain, the population growth development, fecundity and predation rate of N. californicus fed on Tetranychus cinnabarinus Boisduval were studied, based on two-sex life table. The results indicated that the different development stages of N. californicus overlapped. Before the end of oviposition stage, the age-stage specific survival rate (Sxj) of female adult was significantly higher than male adult. The maximum age-stage specific fecundity (fx5) and age-specific population fecundity (mx) were 1.74 and 1.12 eggs/female, total fecundity was 49.28 eggs/female. The results showed that the intrinsic rate of increase, finite rate of increase, net reproduction rate and mean generation time of N. californicus was 0.27/d, 1.31/d, 26.61 eggs/female and 12.34 d, respectively. The age-stage specific predation rate (Cxj) in each immature stage varied with double peak curve. The female and male adult Cxj fluctuated obviously with time. The transformation rate, stable predation rate and finite predation rate were 4.55, 0.54 and 1.72 mites/predator, respectively. N. californicus Sichuan strain had good characteristics of individual development, population growth and predation when fed on T. cinnabarinus. It can be used as the natural resources to control T. cinnabarus and is worthy of further research and utilization. T. cinnabarinus could be selected as one of the preys for the mass-rearing of N. californicus.

Key words: Neoseiulus californicus, Tetranychus cinnabarinus, two-sex life table, predation rate

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