ویژگی‌های زیستی پروانه دولکه بلوط( Dicycla oo L. (Lep., Noctuidae در جنگل‌های بلوط استان چهارمحال و بختیاری

نوع مقاله : مقاله کوتاه

نویسنده

عضو هیات علمی

چکیده

پروانه برگ‌خوار Dicycla ooدر جنگل‌های استان چهارمحال و بختیاری در سال های اخیرافزایش جمعیت داشته و سبب خسارت شده‌است. طی سال‌های 1391-1390 ویژگی‌های زیستی آفت در شرایط صحرائی و آزمایشگاهی بررسی شد. طی مراجعات مختلف در منطقه حضور آفت از ابتدای اسفند تا پایان خرداد ماه، بصورت هفتگی از 20 درخت بلوط نمونه‌برداری شد و در هر درخت 4 شاخه در چهار جهت جغرافیائی جهت مطالعه ویژگی‌های زیستی آفت انتخاب گردید. روند خروج حشرات کامل به وسیله تله نوری ثبت شد. در طی فصل زمستان بازدید‌هایی به منظور تعیین زمستان‌گذرانی آفت به عمل آمد. نتایج بدست آمده نشان داد لاروها‌ی سنین مختلف این آفت از جوانه‌ها و برگ‌های درختان بلوط تغذیه می‌کنند. مدت زمان سنین لاروی در شرایط آزمایشگاهی و صحرائی به ترتیب 26/ ± 22 و 14/ ± 29 روز بود. مدت زمان شفیرگی نیز در شرایط آزمایشگاهی و صحرائی3/ ±8 و 16/ ±11 روز و مدت زمان عمر حشرات کامل به ترتیب در شرایط صحرایی و آزمایشگاهی 2/ ±7 و±9 11/ روز بود. حشرات کامل ماده خارج شده پس از جفت گیری روی درختان بر روی سر شاخه‌ها به صورت دسته ای و در زیر پولک های ایجاد شده توسط حشره ماده تخم‌ریزی می‌کنند. این آفت در منطقه مورد مطالعه به صورت تخم تابستان و زمستان‌گذرانی می کند و در سال یک نسل دارد. پروانه مذکور توسط زنده یاد مرحوم دکتر عبائی مورد شناسائی قرار گرفت.

کلیدواژه‌ها


عنوان مقاله [English]

Biological aspects of Heart moth, Dicycla oo L. (Lep., Noctuidae ) in Chaharmahal and Bakhtiari Oak forests.

نویسنده [English]

  • Farshad Haghighian
Member of Scientific Board
چکیده [English]

The Heart moth had outbreaks in forest regions of Chaharmahal and Bakhtiari province in recent years. During, 2011-2012 biologicol aspects of this moth were studied in field and laboratory conditions. For this purpose from the first of February to end of June in this province twenty trees were selected and eggs, different larval stages and pupa on four twigs in four geographical directions were surveyed weekly. The adults emergence and flypeak were determined by light trap and adult fly peak were recorded. Surveys were conducted to pest owerwintering determination The results indicated that different larval stages feed on buds and leaf. The larval longevity were 22± .26 and 29± .14 days and pupal longevity were 8± .3 and 11± .16 days in laboratory and field condition respectively. The adult longevity were 7± .2 and 9±.11. Then the adults mated and females laid eggs in group on the end of top twigs under scales that caused by females. This pest have one generation per year and owerwintered as egg. The moth were idendified by Dr. abai in last years.

کلیدواژه‌ها [English]

  • biology
  • Heart moth
  • Oak
  • forest
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