نوع مقاله : مقاله پژوهشی

نویسنده

دانشیار جانورشناسی - دانشگاه تهران

چکیده

کنه ی شکارگر  (Ambiyseius swirskii (Acari: Phytoseiidae   و قارچ بیمارگر Beauveria bassiana از دشمنان طبیعی مهم سفید بالک گلخانه Trialeurodes vaporariorum (Westwood) (Homoptera: Aleyrodidae) هستند. در این پژوهش، اثر سفید بالک گلخانه تیمار شده با غلظت 105 کنیدی در میلی‌لیتر از جدایه DEBI008 قارچ در بازه‌های زمانی مختلف (0، 24، 48 و 72 ساعت) روی نمو و تخم‌ ریزی کنه شکارگر بررسی شد. نتایج بررسی تیمار‌ها بر طول دوره نمو از تخم تا کنه کامل نشان داد که طول دورة نموی کنه شکارگر با تغذیه از سفید بالک گلخانه سالم (شاهد) و سفید بالک گلخانه تیمار شده با قارچ (بازة زمانی صفر) نسبت به سایر بازه‌های زمانی آلودگی کمتر بود؛ همچنین تجزیه آماری نشان داد که در تعداد تخم گذاشته شده توسط کنه‌ها در تیمار‌های مختلف تفاوت معنی داری (F-356/11:<0/001) مشاهده می شود که نشان‌دهندة تاثیر نامطلوب قارچ با افزایش طول زمان آلودگی است. بنابراین توصیه می‌شود این دو عامل به صورت همزمان مورد استفاده قرار گیرند.

کلیدواژه‌ها

عنوان مقاله [English]

The effect of Beauveria bassiana-treated Trialeurodes vaporariorum on the development, longevity and oviposition rate of the predatory mite, Amblyseius swirskii

نویسنده [English]

  • Marjan Seiedy

Associate Professor of Zoology - University of Tehran

چکیده [English]

The predatory mite, Amblyseius swirskii Athias-Henriot (Acari: Phytoseiidae) is an effective predator feeding on different insect and mite pests such as whiteflies, thrips and two-spotted spider mites. This predator and entomopathogenic fungus, Beauveria bassiana are important natural enemies of Trialeurodes vaporariorum (Westwood) (Homoptera: Aleyrodidae). In this study, the effect of fungus-infected T. vaporariorum (105 conidia ml-1) on the development, longevity and oviposition rate of the predatory mite in different time intervals (0, 24, 48 and 72 hours) at 25±1°C, 60–70٪RH and a photoperiod of 16:8 h (L: D) under laboratory condition was investigated. The results indicated that developmental period of the predatory mite fed on tween 80-treated T. vaporariorum (Control) and fungus-treated T. vaporariorum (time interval 0) was shorter than other time intervals of infection. The results showed that there were significant differences between the treatments in oviposition rate. It shows unfavorable effect of entomopathogenic fungus by increasing of infection longevity. So, it is better to use A. swirskii and B. bassiana simultaneously.

کلیدواژه‌ها [English]

  • Compatibility
  • greenhouse whitefly
  • entomopathogenic fungi
  • Phytoseiidae
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