اثر دوره‌های نوری مختلف بر زمان نشو و نمای مراحل نابالغ و روند تخم ریزی شب‌پره‌ی مدیترانه‌ای آرد Anagasta kuehniella (Lep.: Pyralidae)

نوع مقاله : مقاله پژوهشی

نویسندگان

گروه گیاه پزشکی، دانشگاه زنجان، زنجان

چکیده

شب‌پره‌ی مدیترانه‌ای آرد Anagasta kuehniella به عنوان میزبان جایگزین در پرورش و تولید انبوه عوامل کنترل بیولوژیک استفاده می­شود. در این پژوهش، اثر دوره­های نوری مختلف روی زمان نشو و نمای مراحل نابالغ و روند تخم­ریزی این شب­پره بررسی شد. آزمایش­ها در شرایط دمایی 2±25 درجه­ی سلسیوس و رطوبت نسبی 5±65 درصد و دوره­های نوری تاریکی کامل، 16 ساعت روشنایی و 8 ساعت تاریکی، 14 ساعت روشنایی و 10 ساعت تاریکی، 24 ساعت روشنایی و 24 ساعت تاریکی برای مراحل نابالغ و تاریکی کامل، 24 ساعت روشنایی: 24 ساعت تاریکی، 24 ساعت اول روشنایی و در ادامه تاریکی، 14 ساعت روشنایی: 10 ساعت تاریکی، 12 ساعت روشنایی: 12 ساعت تاریکی و 12 ساعت اول روشنایی و در ادامه تاریکی برای روند تخم‌ریزی حشرت ماده به عنوان تیمار استفاده شد. نتایج نشان داد طول دوره­ی جنینی در شرایط تاریکی کامل 01/0±01/5 روز و در تناوب 24 ساعت روشنایی و 24 ساعت تاریکی 02/0±00/5 روز بود که اختلاف معنی­داری با هم نداشتند. زمان کل دوره­ی مراحل نابالغ در شرایط تاریکی کامل (46/0±42/43 روز) نسبت به بقیه تیمارهای نوری به­طور معنی­داری کوتاه­تر بود. میانگین تخم‌ریزی نیز در شرایط تاریکی نسبت به سایر تناوب­های نوری بیشتر بود. میانگین روزانه تخم­ریزی روزانه (22/3±13/52 تخم) و کل باروری (±60/323 99/10 تخم) نیز در تیمار تاریکی بیشتر از سایر دوره­های نوری بود. با توجه به نتایج به­دست آمده تاریکی کامل بهترین تیمار برای پرورش، نسبت به سایر تیمارها با توجه به شرایط این پژوهش معرفی می­شود.

کلیدواژه‌ها


عنوان مقاله [English]

The effect of different photoperiods on immature developmental time and ovipositon trend of Mediterranean flour moth, Anagasta kuehniella (Lep.: Pyralidae)

نویسندگان [English]

  • N. Ghezelbash
  • H. R. S. Moayeri
  • A. Kavousi
  • A. Davoudi
Department of Plant Protection, University of Zanjan, Zanjan
چکیده [English]

The Mediterranean flour moth Anagasta kuehniella (Zeller) is used as a factitious host in mass rearing of biological control agents. In current study, the effect of different photoperiods on developmental time of immature stages and oviposition trends of A. kuehniella wereinvestigated. The experiments were carried out at 25±2oC ,65±5% RH and differents photoperiods including complete darkness, 16L:8D, 14L:10D, 24L:24D for immature stages and complete darkness, 24L:24D, 24L: rest in darkness, 14L:10D, 12L:12D and 12L: rest in darkness for female adult fecundity experiments. Results demonstrate that higher developmental time of embryonic developmental time achieve in full darkness (5.01±0.01 day) and in 24L:24D (5.00±0.02 day) which there was not significant different with others. Also, immature developmental time of A. kuehniella in darkness was significantly shorter (43.42± 0.64) than other treatments. Mean daily oviposition (52.13±3.22 eggs) and the total fecundity (323.60±10.99 eggs) were obtained in full darkness treatment. In according to this research condition, the darkness treatment, comparison with other treatments, is introduced as a best photoperiod for mass rearing of A. kuehniella.          

کلیدواژه‌ها [English]

  • factitious host
  • photoperiod
  • immature stages
  • fecundity
  • development time
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