Evaluation of various diets and oviposition substrates for rearing Orius albidipennis Reuter

نویسندگان

1 اهواز، ملاثانی، دانشگاه کشاورزی و منابع طبیعی رامین خوزستان، دانشکده کشاورزی، گروه گیاه‌پزشکی.

2 اهواز، دانشگاه شهید چمران اهواز، دانشکده کشاورزی، گروه گیاه‌پزشکی.

چکیده

یک جیره غذایی و بستر تخم­ریزی مناسب دو نیاز اساسی برای پرورش انبوه موفق گونه­های جنس Orius spp. می­باشد که می­تواند هزینه‌های تولید آنها را کاهش دهد. تأثیر جیره­های غذایی مختلف حاوی تخم­های بید آرد و بید غلات به­صورت مخلوط با گرده­های گیاهی مختلف روی پارامترهای زیستی O. albidipennis در آزمایشگاه مورد مطالعه قرار گرفت. هم­چنین، نرخ بقاء، نرخ تفریخ و زادآوری این شکارگران روی بسترهای طبیعی مختلف تخم­ریزی مقایسه شد. طول دوره رشد پوره­های این سن روی جیره غذایی شامل تخم بید آرد و تخم بید غلات به­ترتیب از 13 تا 2/14 و 14 تا 3/15 روز متغییر بود. نرخ بقای پوره­ها و بالغین و نرخ مصرف غذایی آنها به­صورت معنی­داری تحت تأثیر تیمار غذایی قرار نگرفت. به­دلیل نرخ رشد بالاتر این سن در جیره­های غذایی حاوی تخم بید آرد، این نوع جیره­های غذایی بهترین جیره غذایی برای پرورش دوره پورگی سن O. albidipennisبود. قابل ذکر است که تخم­های بید غلات حدود شش برابر ارزان­تر از تخم‌های بید آرد هستند. بنابراین شاید تخم­های بید آرد علی‌رغم سرعت رشد کم­تر پوره­های تغذیه­کننده از آنها، از نظر اقتصادی برای پرورش سن­های O. albidipennisمقرون به صرفه­تر باشند. هم­چنین ترکیب تخم بید غلات و گرده ذرت به­دلیل زادآوری بالاتر و طول عمر بیش­تر و هم­چنین قیمت ارزان­تر، مناسب­ترین جیره غذایی برای پرورش بالغین O. albidipennisبود.طول عمر ماده­های بالغ، تعداد کل تخم‌گذاری و نرخ تفریخ سن­هایی که روی گیاه نازگوشتی فعالیت کرده بودند به­صورت معنی­داری بیش­تر از سایر بسترهای تخم­ریزی مورد مطالعه بود. نتایج این تحقیق می­تواند دارای کاربردی عملی برای پرورش انبوه O. albidipennis به­عنوان بخشی از برنامه کنترل بیولوژیک توسط این شکارگر باشد.

کلیدواژه‌ها


عنوان مقاله [English]

Evaluation of various diets and oviposition substrates for rearing Orius albidipennis Reuter

نویسندگان [English]

  • N. Safaei 1
  • A. Rajabpour 1
  • A. A. Seraj 2
1 Department of plant protection, Faculty of agriculture, Ramine agriculture and natural resources university of Khouzestan, Mollasani, Ahwaz, Iran.
2 Department of Plant Protection, Faculty of Agriculture, Shahid Chamran University, Ahwaz, Iran.
چکیده [English]

A suitable diet and oviposition substrate are two basic needs for successful mass rearing of Orius spp. and this may reduce their production costs. The effect of various foods containing eggs of Ephestia kuehniella and Sitotroga cerealella with various pollens were investigated on the biological parameters of O. albidipennis in the laboratory. Moreover, survival, hatching rate and fecundity of the predatory bug on various natural substrates were compared. Nymphal developmental time of the bug on diets including E. kuehniella and S. cerealella varied from 13 to 14.2 and 14 to 15.3 days, respectively. The nymph and adult survival and consumption rate were not significantly affected by the dietary treatments. Because of a more rapid development with food containing eggs of E. kuehniella, they are the best nymphal diets for mass rearing of O. albidipennis. It must be noted that S. cerealella eggs are six times cheaper than E. kuehniella eggs. Therefore, the foods containing eggs of S. cerealella may be more economic for mass rearing of the bug despite a slower development of nymphs that fed on them. Also, composition of S. cerealella and date palm pollen is the most suitable diet for mass rearing of O. albidipennis adults due to a higher fecundity and longevity of the adults and lower costs of the diet. Female longevity, total eggs and hatching percentage of the predatory bug on Sedum ternatum were significantly higher than other natural substrates. These results may have practical implications for mass rearing of O. albidipennis as part of a biological control program.

کلیدواژه‌ها [English]

  • minute pirate bug
  • Diet
  • oviposition substrate
  • mass rearing
  • biological control

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