نوع مقاله : مقاله پژوهشی


عضو هیات علمی دانشگاه سیستان و بلوچستان


این مطالعه اثر طول دوره رشدی پیش از بلوغ بر طول عمر حشره کامل و رفتارهای جفت گیری سوسک چهار نقطه ای حبوبات، (Coleoptera: Bruchidae) Callosobruchus maculatus را بررسی می‌کند. در آزمایش حاضر، از تخم‌های هم‌سن و حشرات کامل باکره یک روزه استفاده شد. طول عمر حشرات کامل مرتبط با هر دوره رشدی، تعداد تخم و درصد تفریخ و پارامترهای مرتبط با جفت گیری شامل درصد موفقیت جفت گیری، درصد عدم پذیرش نرها، درصد نرهای بی رغبت به جفت گیری، زمان تأخیر جفت گیری، زمان شروع و طول مدت لگد زدن توسط ماده و طول مدت جفت گیری ثبت شد. نتایج نشان داد طول دوره رشدی تاثیر معنا داری بر طول عمر حشرات ماده نداشت ولی بر طول عمر حشرات نر اثر معنی دار داشت. به طوری که حشرات نری که طول دوره رشدی بسیار کم یا بسیار زیاد داشتند، طول عمر کمتری نسبت به حشرات نر ظاهر شده در میانه دوره (با طول دوره رشدی متوسط) داشتند. حشرات نر با طول دوره رشدی زیاد، قابلیت کمتری در موفقیت در برابر مقاومت حشره ماده و نهایتا موفقیت در جفت گیری داشتند. همچنین مدت زمان جفت گیری از طول دوره رشدی حشره تاثیر پذیرفت. به طور کلی، طول دوره رشدی سوسک چهار نقطه ای حبوبات تاثیر مستقیمی در طول عمر حشرات کامل و رفتارهای جفت گیری آن دارد و توجه به این موضوع در انتخاب حشرات برای آزمایشهای مختلف اهمیت داشته و میتواند در کاهش خطاهای آزمایش نقش بسزائی داشته باشد.


عنوان مقاله [English]

Effect of developmental time on the cowpea weevil Callosobruchus maculatus adult longevity and mating behaviors

نویسنده [English]

  • Azam Amiri

چکیده [English]

This study investigated the effect of pre-maturity developmental time on adult longevity and mating behaviors of the cowpea weevil, Callosobruchus maculatus (Coleoptera: Bruchidae). Eggs of the same age and one-day-old virgin adult insects were used for the experiments. Longevity of adult insects associated with each developmental time, the number of eggs and hatching percentage, besides mating-related parameters, including mating success rate, males rejection rate, mating reluctance males, mating latency, onset time, and duration of kicking by the females and mating duration were recorded. The results showed that the length of the developmental time did not significantly affect the longevity of the female insects but showed a significant effect on the longevity of the male individuals. Male insects with a very short or very long developmental time had a shorter lifespan compared to the male insects that appeared in the middle of the period (with a medium developmental time). Male insects with longer developmental time had less ability to succeed against female insect resistance and eventually mating success. Copulation duration was also affected by the insect's developmental time length. In general, the cowpea weevil's developmental time directly impacts the longevity of adult insects, and their mating behaviors. In addition, attention to this issue is important in selecting insects for different experiments. It can play a significant role in reducing experimental errors.

کلیدواژه‌ها [English]

  • Developmental time
  • Mating
  • Cowpea weevil
  • Longevity
  • Callosobruchus maculatus
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