تأثیر دما بر پارامترهای جدول زندگی زنبور (Eretmocerus delhiensis (Hym.: Aphelinidae، پارازیتوئید (Neomaskellia andropogonis (Hem.: Aleyrodidae

نوع مقاله : علمی پژوهشی -انگلیسی

نویسندگان

1 دانش‌آموخته کارشناسی ارشد دانشگاه شهید چمران اهواز

2 استاد دانشگاه شهید چمران اهواز

چکیده

رشد، تولید مثل و پارامترهای جدول زندگی زنبور پارازیتوئید Eretmocerus delhiensis Mani  روی سفید بالک نیشکر، Neomaskellia andropogonis Corbett  در دماهای 20 ، 25، 30 و 32 درجه سلسیوس مطالعه شد. دورۀ رشد از تخم تا حشره کامل از 0/46±24/2 روز در 20 درجه به 0/33±10/7 روز در 32 درجه سلسیوس کاهش یافت. در دماهای بالاتر از آستانه پائین دمایی (11/25 درجه سلسیوس)، به طور میانگین به 250 روز- درجه برای کامل شدن دورۀ رشد نیاز بود. میزان بقاء مراحل نابالغ در چهار دمای 20، 25، 30 و 32 درجه سلسیوس به ترتیب 0/41±77/76، 0/38±37/33، 0/82±74/99 و 1/07±59/45 درصد بود. در دماهای مذکور پارازیتوئیدهای ماده E. delhiensis به طور میانگین 1/48±56/66، 3/24±82/80 ،93/60±18/0 و 0/490±8/46 تخم گذاشتند و میانگین عمر آنها به ترتیب 0/55±23/80، 0/54±17/33، 0/28±6/66 و 0/22±4/43 روز بود. نرخ ذاتی افزایش جمعیت دامنه‌ای از 0/01±0/156 تا 0/02±0/234 ماده/ ماده / روز داشت و بیشترین مقدار در 25 درجه سلسیوس ثبت شد. در بررسی‌های تکمیلی می‌توان از این اطلاعات برای تولید انبوه زنبور E. delhiensis و همچنین توسعه مدل‌های شبیه سازی با هدف افزایش کارایی در رهاسازی این پارازیتوئید استفاده نمود.

کلیدواژه‌ها

عنوان مقاله [English]

Effect of temperature on life table parameters of Eretmocerus delhiensis (Hym.: Aphelinidae), a parasitoid of Neomaskellia andropogonis (Hem.: Aleyrodidae)

نویسندگان [English]

  • A. Khadempour 1
  • P. Shishehbor 2
  • A. Rasekh 2
1 M.Sc. Graduate Student, Shahid Chamran University of Ahvaz
2 Professor, Shahid chamran university of ahvaz, ahvaz, Iran
چکیده [English]

Development, reproduction, and life table parameters of the parasitoid Eretmocerus delhiensis Mani (Hymenoptera: Aphelinidae)parasitizing sugarcane whitefly, Neomaskellia andropogonis Corbett (Hemiptera: Aleyrodidae)were studied at 20, 25, 30 and 32°C, 45±5% RH, and 12: 12 h (L: D). The developmental time of egg to adult stage, decreased from 24.2±0.46 days at 20°C to 10.7±0.33 days at 32°C. An average of 250 degree-days was required to complete development above the lower threshold temperature (11.25°C). Preimaginal survivorship was 77.76±0.41, 82.33±0.38, 74.99 ±0.37, and 59.45±1.07% at 20, 25, 30, and 32°C, respectively. The mean fecundity of E. delhiensis was 65.66±1.48, 82.80±3.24, 18.93±0.60, and 8.46±0.49 eggs at 20, 25, 30, and 32°C, respectively, and had a mean longevity of 23.80±0.55, 17.33±0.54, 6.66±0.28, and 4.43±0.22 days at the same four temperatures. The intrinsic rate of population increase (rm) ranged from 0.156±0.01 to 0.234±0.02, with the highest value recorded at 25°C. Our results revealed that 25°C is the optimum temperature for development and reproduction of E. delhiensis. These data can be used in supplementary studies to maximize the production of E. delhiensis from mass rearing facilities and to develop computer simulation models to predict E. delhiensis development plus population dynamics for release programs.

کلیدواژه‌ها [English]

  • Eretmocerus delhiensis
  • Neomaskellia andropogonis
  • Biology
  • Life table parameters
  • Sugarcane

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گیاه پزشکی
دوره 43، شماره 4
بهمن 1399
صفحه 35-44

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