تأثیر اندازه‎ی بدن، رژیم غذایی و جفت‎گیری روی طول عمر و برخی جنبه‌های تولیدمثلی شب‌پره‌ی‎ برگ‌خوار دو نواری (Streblote siva (Lefebvre

نوع مقاله : مقاله پژوهشی

نویسندگان

1 استادیار مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی استان بوشهر، سازمان تحقیقات، آموزش و ترویج کشاورزی

2 دانشیار، گروه گیاه‏پزشکی، پردیس کشاورزی و منابع طبیعی، دانشگاه رازی، کرمانشاه، ایران

3 دانشیار، گروه گیاه‏پزشکی، دانشکده کشاورزی، دانشگاه یاسوج، یاسوج، ایران

4 استادیار، گروه حشره‌شناسی و بیماری های گیاهی پردیس ابوریحان، دانشگاه تهران، تهران، ایران

چکیده

ارتباط بین اندازه‌ی بدن، رژیم غذایی، باروری و برخی جنبه‌های تولیدمثلی در شب‌پره‌ی برگ‌خوار دو نواریStreblote siva (Lefebvre) (Lep., Lasiocampidae) در آزمایشگاه ارزیابی شد. به‌منظور بررسی تأثیر کیفیت گیاه میزبان در افزایش وزن این حشره، میزان ازت خام برگ‌های گیاهان مورد آزمایش با استفاده از دستگاه کجلدال اندازه‌گیری شد. دامنه‌ی به نسبت زیاد در وزن لارو سن ششم، شفیره، حشره‌ی ماده بالغ باعث به وجود آمدن دامنه‌ی زیاد تخم‌ریزی شده که نتیجه‌ی تغذیه روی گونه‌های گیاهی متفاوت می‌باشد. نتایج نشان داد اختلاف معنی‌داری روی وزن، طول بال جلو و تعداد تخم حشرات ماده بالغ پرورش یافته روی میزبان‎های مختلف گیاهی، وجود دارد در حالی که از نظر اندازه‌ی تخم اختلاف معنی‌داری دیده نشد (P<0.05). وزن لارو سن ششم با وزن شفیره‎ی ماده، وزن حشره‌ی ماده بالغ و تعداد تخم ارتباط معنی‎داری داشت اما با اندازه‎ی تخم تفاوت معنی‎داری نشان نداد (P<0.05). برای میانگین RAF50 مقدار 01/0±23/0 به دست آمد که نشانگر بیشترین تخم‌ریزی حشرات ماده در اوایل دوره‌ی زندگی نسبت به بقیه‌ی طول عمر می‌باشد. حشرات ماده‌ی جفت‌گیری کرده به‌طور معنی‌داری دارای طول عمر بیشتر بودند (P<0.05). نسبت حشرات نر به ماده‌ی جمع‌آوری‌شده 1 به 1 به دست آمد (P=0.66). افزایش وزن لاروها روی دو تیمار غذایی کُنوکارپوس و کُنار اختلاف معنی‌داری نشان نداد در حالی که با آکاسیا اختلاف معنی‌داری داشتند (P<0.05).
 

کلیدواژه‌ها


عنوان مقاله [English]

Effects of body size, nutrition intake and mating on longevity and other reproduction aspects of Streblote siva (Lefebvre)

نویسندگان [English]

  • Nasser Farrar 1
  • A.A. Zamani 2
  • M. Haghani 3
  • A. Jamshidnia 4
1 Assistant Professor of Bushehr Agricultural and Natural Resources Research and Education Center (AREEO)
چکیده [English]

    The Streblote siva (Lefebvre) (Lepidoptera: Lasiocampidae) is an invasive defoliator of Conocarpus erectus, Ziziphus spina-christi and Acacia ampliceps in southern of Iran. The relationship between fecundity and body size, egg size, Mating as well as longevity in female insects was studied under laboratory conditions. Effect of host’s quality on growth and gain of S. siva was performed using hosts nitrogen content which was measured by the Kjeldahl technique. The strange data range of larva weight, pupae and adult female insects rose to crescendo of oviposition in order to using different nutrition on plant species. However, there were strange relationships among fecundity and pupal weight, adult weight, there was no significant difference in the egg size of the insect reared on different plants hosts (P<0.05). The weight of 6th instar larvae was significantly correlated with female pupa and female Adult weight as well as egg number (P<0.05). Compared with the rest of the life span of the insect, the mean of RAF50 (0.23 ± 0.01), indicated that the highest oviposition rate took place in the early life of it (P<0.05).Also, the results showed that non-mating insects had a longer life span than mating insects and the sex ratio was 1:1 (P=0.66). The weight gain of larvae was not significantly different between two treatments, C. erectus and Z. spina-christi but, there was a significant difference compared with the third treatment, A. ampliceps. Finally, the results showed that the factors affecting larval weight gain such as different plants hosts may influence on adult size and following fecundity (P<0.05).
 
 

کلیدواژه‌ها [English]

  • Reproduction
  • body size
  • pupal weight
  • fecundity
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