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  • Acarological Studies
  • Volume:5 Issue:2
  • Development and life table parameters of the Phytoseius corniger Wainstein (Acari: Phytoseiidae) fee...

Development and life table parameters of the Phytoseius corniger Wainstein (Acari: Phytoseiidae) feeding on the two-spotted spider mite, Tetranychus urticae Koch (Acari: Tetranychidae) under laboratory conditions

Authors : Leili BAGHLANI, Hussein SADEGHİ NAMAGHİ, Lida FEKRAT
Pages : 52-57
Doi:10.47121/acarolstud.1234593
View : 77 | Download : 94
Publication Date : 2023-07-31
Article Type : Research Paper
Abstract :Phytoseiid mites are important for biological control of some pest species including phytophagous mites and small insects. The species, Phytoseius corniger Wainstein is one of the most abundant predatory mite in fruit orchards and urban green spaces in Razavi Khorasan province, Iran. Biological parameters of this predatory feeding on the two-spotted spider mite Tetranychus urticae Koch was studied for the first time under the laboratory conditions insert ignore into journalissuearticles values(25±2 ºC, 55±5 % RH and 16L: 8D photoperiod);. The results indicated that the mean developmental periods for egg, larva, protonymph and deutonymph were 1.12±0.09, 0.73±0.03, 1.01±0.03, and 3.05±0.09 days for females, and 0.95±0.37, 0.67±0.39, 1.05±0.88, and 3.05±0.85 days for males, respectively. The pre-oviposition, oviposition, post-oviposition periods and adult longevity for females were 4.63±0.11, 11.63±0.16, 7.93±0.13 and 24.18±0.21 days, respectively. The females laid an average of 0.48 eggs per day, and 5.60 eggs during their life span. In addition, larvae of P. corniger may molt to the protonymph stage without feeding. Consumption rate during nymphal stage was 1.95 prey per day. The highest rate of prey consumption was recorded during the oviposition period, with an average of 3.35 prey items prey per day. Regarding life-history traits, the intrinsic rates of increase insert ignore into journalissuearticles values(rm); of this predatory mite 0.064±0.02 insert ignore into journalissuearticles values(♀♀/♀/day); and its finite rate of increase insert ignore into journalissuearticles values(λ);, net reproduction rate insert ignore into journalissuearticles values(R0);, generation time insert ignore into journalissuearticles values(T);, and doubling time insert ignore into journalissuearticles values(DT); were 1.066±0.23 insert ignore into journalissuearticles values(day-1);, 3±0.07 insert ignore into journalissuearticles values(♀♀/♀/generation);, 17.14±0.11 insert ignore into journalissuearticles values(days);, and 10.83±0.65 insert ignore into journalissuearticles values(days);, respectively. Further laboratory and field studies regarding its diet preference and predation capacity are needed.
Keywords : Demographic parameters, predatory mite, Phytoseius corniger

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