تأثیر جدایه‌های قارچ بیمارگر حشرات ‏Beauveria bassiana (Bals. Criv.) Vuill‎‏ روی بقا و فراسنجه‌های ‏رشد جمعیت شته ‏Myzocallis coryli Goetze

نوع مقاله : علمی - پژوهشی

نویسندگان

1 دکتری حشره شناسی، گروه گیاه‎‌‎پزشکی، دانشکده‎‌‎‏ کشاورزی، دانشگاه ارومیه، ارومیه، ایران

2 دانشیار گروه گیاه‎‌‎پزشکی، دانشکده‎‌‎کشاورزی، دانشگاه ارومیه، ارومیه، ایران

چکیده

این بررسی برای تعیین تأثیر دو­جدایه از قارچ Beauveria bassiana (Bals. Criv.) Vuill روی زنده­مانی و فراسنجه­های رشد جمعیت شتة فندق (Myzocallis coryli Goetze) از مهم­ترین آفات فندق انجام شد. اثر غلظت کم­کشنده LC30 روی رشد، تولید­مثل و شاخص­های جدول زیستی باروری شته مومی فندق، در شرایط آزمایشگاهی بررسی شد. مقدار کشندگی جدایه­ها IRAN429 و Z-1 با LC50 برابر با 104×86/9 و 106×03/1 کنیدی­در­میلی­لیتر به­دست آمد. تیمارهای قارچ در مقایسه با شاهد موجب کاهش معنی­دار طول دوره پورگی، طول عمر و باروری شته بالغ شد (05/0 P<). نرخ ذاتی افزایش جمعیت (rm) شته فندق در غلظت کم کشنده جدایه­های IRAN429 و Z-1 به­ترتیب معادل 15/0 و 16/0 ماده/ماده/روز به­دست آمد که در مقایسه با شاهد (18/0 ماده/ماده/روز) به­طور معنی­داری کاهش نشان داد. طول عمر در تیمار IRAN429 (75/31 روز) و Z-1 (45/39 روز) نسبت به شاهد (50/43 روز) تفاوت معنی­دار نشان داد. پوره­زایی (Fecundity) شته فندق در IRAN429­، Z-1 و شاهد به­ترتیب برابر با 75/31، 45/39 و 41/78 (پوره/ماده) است که اختلاف معنی­داری با هم­دیگر دارند. نرخ متناهی جمعیت (λ) در دو جدایه IRAN429 و Z-1 به­ترتیب برابر با 17/1 و 17/1 ماده/روز نسبت به شاهد 19/1 ماده/روز کاهش نشان دادند. نتایج این بررسی نشان داد با توجه به تأثیر قابل توجه قارچ­های بیمارگر در غلظت کم­کشنده روی شاخص­های بقاء و تولید­مثل شته، می­توان در تدوین برنامه­های مدیریت تلفیقی و بیولوژیک آفات هدف مورد استفاده قرار داد.

کلیدواژه‌ها

عنوان مقاله [English]

Effects of the entomopathogenic fungus, Beauveria bassiana (Bals. Criv.) Vuill on ‎survival and population growth parameters of Myzocallis coryli Goetze

نویسندگان [English]

  • samaneh akbari 1
  • Shahram Aramideh 2
1 PhD of Entomology, Department of Plant Protection, Faculty of Agriculture, Urmia University, Urmia, I. R. Iran
2 Associate Professor, Department of Plant Protection, Faculty of Agriculture, Urmia University, Urmia, I. R. Iran
چکیده [English]

This study was carried out to determine the effects of the entomopathogenic fungus, Beauveria bassiana (Bals. Criv.) Vuill, on survival and population growth parameters of the Myzocallis coryli Goetze one of important pest of hazelnut. Effect of LC30 on development, reproduction and life table parameters of the Filbert aphid were studied under laboratory conditions. The LC50 values of IRAN429 and Z-1 isolates were 9.86×104 and 1.03×106 conidia ml-1. The fungal treatment significantly (P<0.005) reduced nymphal period, life span and fecundity of the aphid in comparison with control. The rm values of IRAN429 and Z-1 in LC30 were 0.15 and 0.16 female/female/day respectively which was significantly reduced in comparison with control aphid (0.18 female/female/day). The lifelong of IRAN429 (31.75 day) and Z-1 (39.45 day) treatments were had significant difference with control (43.50 day). The fecundity value of IRAN429, Z-1 and control were 31.75, 39.45 and 78.41 (nymph/ female) that have significant difference with each other. Finite rate of increase (λ) was significantly reduced in treated aphids (IRAN429= 1.17 and Z-1=1.17 female/female/day) compared to control (1.19 female/female/day) treatment. The results of the present study showed that due to the significant effect of pathogenic fungi in sub-lethal concentration on the survival and reproduction indicators of aphids, it can be used in the integrated and biological management program of target pests.

کلیدواژه‌ها [English]

  • Sub-lethal effect
  • Life table
  • Population growth
  • Biocontrol

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پژوهش و توسعه جنگل
دوره 9، شماره 1
خرداد 1402
صفحه 129-144

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