اثر چهار ترکیب حشره کش روی مراحل نابالغ (Westwood)(Hymenoptera:Trichogrammatidae) Trichogramma evanescens پارازیتوئید تخم مینوز گوجه فرنگی Tuta absoluta (Meyrick) (Lep.: Gelechiidae)

نوع مقاله : مقاله پژوهشی

نویسندگان

1 بخش تحقیقات گیاهپزشکی، مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی استان مرکزی، سازمان تحقیقات، آموزش و ترویج کشاورزی، اراک، ایران.

2 دانشیار گروه گیاهپزشکی، پردیس کشاورزی و منابع طبیعی دانشگاه تهران، کرج، ایران.

3 استاد، گروه گیاهپزشکی، پردیس کشاورزی و منابع طبیعی دانشگاه تهران، کرج، ایران.

چکیده

چکیده
     اثرات دوز توصیه ­شده­ی مزرعه‌ای و نصف دوز توصیه ­شده‌ی مزرعه­ای چهار حشره کش آبامکتین، امامکتین­بنزوات، استامی پرید و فلوبندیامید روی مراحل نابالغ زنبورTrichogramma evanescens (Hym.: Trichogrammatidae) پارازیتویید مینوز گوجه­فرنگیTuta absoluta (Meyrick) (Lep.: Gelechiidae)  مطالعه شد. تخم­های پارازیته­ شده بید غلات Sitotroga cerealella (Lepidoptera: Gelechiidae) در مراحل لاروی، پیش­شفیرگی و شفیرگی پارازیتویید به روش غوطه­وری تیمار شدند. کارت­های حاوی 140 عدد تخم پارازیته شده­ی بید غلات به مدت 10 ثانیه در محلول­های حشره­کش­ها که با غلظت توصیه شده­ی مزرعه­ای و نصف آن تهیه شده بودند، غوطه­ور شدند. زیست سنجی فقط برای مراحل نابالغ نسل F0 انجام شد.  میزان ظهور، پارازیتیسم و طول عمر در نسلF0  و نیز کاهش در میزان ظهور و نسبت جنسی در نسل F1  در تیمارهای مختلف تعیین شد. استامی پرید در مرحله­ی شفیرگی در گروه بی­زیان قرار گرفت. در میزان ظهور نسل F1 آبامکتین، امامکتین و استامی پرید کم زیان وفلوبندیامید بی­زیان دسته بندی شد. از نظر نسبت جنسی فلوبندیامید تنها حشره­کشی بود که با شاهد اختلاف معنی­داری نداشت. درمورد میزان پارازیتیسم و ظهور در نسلF0  آبامکتین و امامکتین بنزوات در همه­ی مراحل رشدی و دو غلظت به کار­رفته در گروه کم­زیان دسته بندی شدند. فلوبندیامید در همه­ی مراحل و هر دو غلظت در گروه بی­زیان گروه­بندی شد. به طور کلی آبامکتین و فلوبندیامید در هر دو نسل به ترتیب در گروه کم زیان و بی زیان قرار گرفتند.
 

کلیدواژه‌ها


عنوان مقاله [English]

Effects of Four Insecicides on Immature Stages of Trichogramma evanescens Westwood (Hymenoptera: Trichogrammatidae) Egg Parasitoid of Tuta absoluta (Meyrick) (Lep.: Gelechiidae)

نویسندگان [English]

  • Sedigheh Ashtari 1
  • Ghodratallah Sabhi 2
  • Khalil Talebi Jahromi 3
1 1Plant Protection Research Department, Markazi Agricultural and Natural Resources Research and Education Center, Agricultural Research, Education and Extension Organization, AREEO, Arak, Iran.
2 Associate Professor, Department of Plant Protection, College of Agriculture and Natural Resources, University of Tehran, Karaj, Iran.
3 Professor, Department of Plant Protection, College of Agriculture and Natural Resources, University of Tehran, Karaj, Iran.
چکیده [English]

Abstract
The effects of the recommended dose (RD) and half of recommended dose (HRD) of four insecticides, abamectin, emamectin benzoate, acetamiprid and flubendiamide, were studied on different immature stages of Trichogramma evanescens, egg parasitoids of tomato leaf miner Tuta absoluta (Lepidoptera: Gelechiidae). Parasitized eggs of the Angoumois grain moth, Sitotroga cereallela (Lepidoptera: Gelechiidae), were treated by the dipping method at the larval, prepupal, or pupal stages of the parasitoid. Cards containing 140 parasitized eggs of Sitotroga cerealella (Lepidoptera: Gelechiidae) were dipped into RD and HRD solutions of the insecticides for 10 seconds at each developmental stage of the parasitoid. Bioassay was performed only for immature stages of F0 generation. Reduction in emergence rate, parasitism rate and longevity of F0 generation as well as reduction in emergence rate and sex ratio of F1 generation were determined. Acetamiprid and flubendiamide were harmless at pupal stage, abamectin, emamectin benzoate and acetamiprid were slightly harmful but flubendiamide was harmless in regards of the emergence rate of the generation F1. Flubendiamide was the only insecticide with no significant difference on sex ratio compared to control. Both concentrations of abamectin and emamectin benzoate were slightly harmful and flubendiamide was harmless in terms of the rate of emergence and parasitism at the generation F0 in all developmental stages. In general, abamactin and flubendiamide in both generations were in slightly harmful and harmless groups, respectively.
 

کلیدواژه‌ها [English]

  • Keyword: Non lethal effects
  • Parasitism
  • Longevity
  • Sex ratio
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