نرخ شکارگری کنه شکارگرAmblyseius swirskii (Acari: Phytoseiidae) روی تریپس غربی گل

نوع مقاله : مقاله پژوهشی

نویسندگان

1 گروه حشره‌شناسی کشاورزی، دانشگاه تربیت مدرس، تهران، ایران

2 گروه گیاه‌پزشکی، دانشکده کشاورزی، دانشگاه جیرفت، جیرفت، ایران

چکیده

کنه شکارگر Amblyseius swirskii Athias-Henriot یکی از مهمترین عوامل مهار زیستی مورد استفاده در برنامه کنترل بیولوژیک بسیاری از آفات می­باشد. به هر حال قبل از به کارگیری دشمنان طبیعی در برنامه­ کنترل بیولوژیک، دانستن چگونگی کارایی آن عوامل زیستی ضروری است. در این پژوهش نرخ شکارگری سن-مرحله رشدی دوجنسی کنه شکارگر A. swirskii روی تریپس غربی گل Frankliniella occidentalis (Pergande) در شرایط آزمایشگاهی با دمای 1± 25 درجه سلسیوس، رطوبت نسبی 5±60 درصد و دوره نوری16 ساعت روشنایی و 8 ساعت تاریکی تعیین شد. میانگین و خطای معیار پارامترهای شکارگری با استفاده از روش بوت استرپ تخمین زده شد. بر اساس نتایج به دست آمده، نرخ شکارگری سنی-مرحله رشدی (Cxj) ماده بالغ شکارگر بیشتر از سایر مراحل رشدی بود. برای مراحل غیر شکارگری (تخم و لارو)، نرخ شکارگری صفر بود. نرخ خالص شکارگری (C0)، میانگین تعداد شکار مصرف شده توسط هر فرد شکارگر در تمام طول عمر، روی تریپس گل 25/159 شکار/شکارگر بود. علاوه بر این، نرخ متناهی شکارگری (ω) و نرخ پایدار شکارگر (Ψ) به­ترتیب 635/2 شکار/شکارگر/ روز و 208/2 شکار/شکارگر/ روز بود. مقدار نرخ تبدیل (Qp)، میانگین تعداد شکار مورد نیاز برای تغذیه به منظور تولید یک نتاج، برابر با 39/8 شکار بود. نتایج به دست آمده در این پژوهش می­تواند اطلاعات مهمی در طراحی یک برنامه جامع برای کنترل تریپس غربی گل توسط کنه شکارگر  A. swirskii روی محصولات فراهم آورد.

کلیدواژه‌ها


عنوان مقاله [English]

Predation rate of Amblyseius swirskii (Acari: Phytoseiidae) on western flower thrips

نویسندگان [English]

  • S. Dalir 1
  • M. Khanamani 2
1 Department of Agricultural Entomology, Tarbiat Modares University, Tehran, Iran
2 Department of Plant Protection, Faculty of Agriculture, University of Jiroft, Jiroft, Iran
چکیده [English]

Amblyseius swirskii Athias-Henriot is one of the major biological control agents used in biological control programs for a variety of pests. However, before using a natural enemy in a biocontrol program, it is essential to know its effectiveness. In this study, the age-stage, two-sex predation rate of A. swirskii was determined on Frankliniella occidentalis (Pergande) under laboratory conditions at 25 ± 1 °C, relative humidity of 60 ± 5%, and a 16: 8 h (L: D) photoperiod. The means and standard errors of the predation parameters were estimated using the bootstrap resampling procedure. According to the obtained results, the age-stage specific predation rate (cxj) of female adulte of the predator was higher than the other stages. Their predation rates were zero for the non-predatory stages (e.g., egg and larva). The value of net predation rate (C0), the mean number of prey consumed by an average individual predator during its entire life span, on F. occidentalis was 159.25 preys/predator. In addition, the value of finite predation rate (ω) and stable predation rate (Ψ) were 2.635 preys/predator/day and 2.208 preys/predator, respectively. The value of transformation rate (Qp), the mean number of prey that a predator needs to consume to produce an offspring, was 8.39 prey. Consequently, the obtained results in this study could provide important information in the design of a comprehensive program for controlling F. occidentalis by predatory mite, A. swirskii on crops.

کلیدواژه‌ها [English]

  • Biological control
  • finite predation rate
  • Frankliniella occidentalis
  • Predation rate
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