اثرات تیمارهای مختلف غذایی روی فراسنجه‌های زیستی زنبور Bracon hebetor

نوع مقاله : گزارش کوتاه-فارسی

نویسندگان

1 دانش‌آموخته کارشناسی ارشد، گروه گیاه پزشکی، واحد تبریز، دانشگاه آزاد اسلامی، تبریز، ایران.

2 استادیار، گروه گیاه‌پزشکی ، واحد تبریز، دانشگاه آزاداسلامی ، تبریز، ایران

چکیده

حشرات کامل بسیاری از پارازیتوئیدها از کربوهیدرات‌ها برای تأمین منابع انرژی خود استفاده می­‌کنند. تغذیه از کربوهیدرات‌ها سبب افزایش کارایی و سایر ویژگی­‌ها­ی زیستی پارازیتوئید­ها می‌شود. در این مطالعه اثر تغذیه از غلظت ­10 درصد تیمار­ها­ی قندی فروکتوز، گلوکز، عسل و غلظت ترکیبی (1، 1، 1) از سه ماده قندی یاد شده روی فراسنجه‌های زیستی زنبورBracon hebetor Say (Hym: Braconidae)  بررسی شد. همچنین از تیمار آب مقطر به عنوان شاهد استفاده شد. زنبور پارازیتوئید روی لارو­ سن آخر شب­‌پره مدیترانه­‌ای آرد(Lep: Pyralidae)  Ephestia kuehniella Zeller در دمای 1±26 درجه سلسیوس، رطوبت نسبی 5±60 درصد و دوره­‌ی نوری 16 ساعت روشنایی و 8 ساعت تاریکی پرورش داده شد نتایج نشان داد تیمار­ها­ی غذایی نسبت به آب مقطر فراسنجه‌های رشد جمعیت پایدار را به صورت معنی‌­داری تحت تأثیر قرار دادند. امید به زندگی و طول عمر زنبور در تیمار فروکتوز بالاترین مقدار بود. مقادیر نرخ ذاتی افزایش جمعیت برای  آب مقطر، فروکتوز، گلوکز، عسل و غلظت ترکیبی آن‌ها به ترتیب 0.257، 0.272، 0.267، 0.264 و 0.291 (فرد/ماده/روز) بدست آمد که نشان دهنده اثر مثبت تیمارهای غذایی روی زنبور بود. بیشترین مقدار نرخ ذاتی افزایش جمعیت در تیمار مخلوط سه ماده قند­ی بدست آمد که نشان دهنده اهمیت کیفیت مکمل‌های غذایی مورد استفاده در پرورش انبوه دشمنان طبیعی از جمله زنبور B. hebetor بود.

کلیدواژه‌ها

عنوان مقاله [English]

Effects of different food treatments on biological parameters of Bracon hebetor

نویسندگان [English]

  • V. Alivand 1
  • M. jamshidi 2
1 M.Sc. Graduate, Department of Plant Protection, Tabriz Branch, Islamic Azad University, Tabriz, Iran
2 Assistant Professor, Department of Plant Protection, Tabriz Branch, Islamic Azad University, Tabriz, Iran
چکیده [English]

Background and Objectives
Adult insects of many parasitoids use carbohydrates to supply their energy. A high-carbohydrate diet increases the efficiency and other biological properties of parasitoids. Bracon hebetor Say (Hym: Braconidae) is one of the most important biological control factors on farms, orchards, and forests of the country, widely perceived to be found in nature, and can be effective in controlling larvae of leprose winged pests at an acceptable economic cost.
Materials and Methods1
 In this study, the effect of four sugar treatments [10% concentration of fructose, glucose, honey, and a mixture of fructose, glucose, and honey (1:1:1)] and distilled water (as a control for sugar treatments) was examined on the biological properties of B. hebetor male and female adults. B. hebetor was reared on fifth instars of Ephestia kuehniella Zeller (Lep: Pyralidae) in a growth chamber at 26±2 ºC‚ 60±5 %RH‚ and photoperiod of 16:8 (L: D) h. Daily observations and records were made for the development period and survival rate. The data were analyzed based on two-sex life table analysis using TWO SEX-MS Chart.
Results
The present study showed a significant improvement in the biological reproductive and stable population parameters in sugar treatment groups compared with the distilled water treatment. The highest value of adult longevity and life expectancy (ex) of the B. hebetor occurred in fructose treatment. Moreover, the highest net reproduction rate(R0), finite rate of increase(λ), and lowest doubling time (DT) were observed in the mixed sugar treatment. On the other hand, the highest gross reproduction rate (GRR) and mean generation time (T) were found in glucose and fructose treatments. The results of study revealed that intrinsic rate of increase (rm) values for distilled water, fructose, glucose, honey, and mixed sugar were 0.257 ± 0.001, 0.272 ± .0011, 0.267 ± 0.033, 0.264 ± 0.007, and 0.291 ± 0.004 (day-1), respectively.
Discussion
According to the results of the present study, B. hebetor was positively affected by the sugar treatments, and the suitability of sugar diets was ordered as mixed sugar > fructose > glucose and honey. In conclusion, sugar feeding is recommended for the mass rearing program of B. hebetor because suing them could increase the ability of this parasitoid in pest control. The highest rm value for the mixture of the three sugars indicated the importance of sugar-feeding quality in the mass-rearing program of natural enemies.

کلیدواژه‌ها [English]

  • Diets
  • Life table
  • Mass rearing
  • Parasitoid

مراجع

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 © 2022 by the authors. Licensee SCU, Ahvaz, Iran. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0 license) (http://creativecommons.org/licenses/by-nc/4.0/
گیاه پزشکی
دوره 45، شماره 3
مهر 1401
صفحه 105-111

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