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مطالعه تاثیر تراکم لوبیای آلوده در دوران لاروی بر پارامترهای زیستی و رفتارهای جفت‌گیری سوسک چهار نقطه‌ای حبوبات Callosobruchus maculatus

نوع مقاله : مقاله پژوهشی

نویسندگان

1 عضو هیات علمی دانشگاه سیستان و بلوچستان

2 2. عضو هیات علمی (استادیار) بخش گیاه‌پزشکی، دانشکده کشاورزی، دانشگاه شیراز، شیراز، ایران

چکیده

سوسک چهار نقطه‌ای حبوبات (Coleoptera: Chrysomelidae)(Fabricius, 1775) Callosobruchus maculatus به دلیل داشتن چرخه زندگی کوتاه و امکان پرورش آسان به عنوان حشره مدل برای مطالعه جنبه های مختلف زیست شناسی، رفتار شناسی و یا رقابت درون گونه‌ای استفاده می شود. در این مطالعه، با استفاده از لوبیاهای با یک تخم، تاثیر حضور لاروهای دیگر در لوبیاهای مجاور و نه در همان لوبیا در طول دوره رشدی، بر احساس رقابت احتمالی در حشره و رفتارهای جفت‌گیری در بزرگسالی و پارامترهای زیستی در نسل F0 و F1 بررسی شده است. طول دوره رشدی، تعداد تخم، درصد تفریخ، طول عمر حشره کامل، و نسبت جنسی نسل بعد ارزیابی شد. نتایج نشان داد لاروهای سوسک چهار نقطه‌ای حبوبات قادر بودند وجود لارو در لوبیاهایی که در تماس با لوبیاهای آنها بودند را تشخیص داده و تحت تاثیر آن در بزرگسالی تغییر رفتار نشان دهند. به طوری که این حشرات در بزرگسالی درصد جفت‌گیری موفق و مدت زمان جفت‌گیری کمتری نسبت به حشراتی که به تنهایی در یک ظرف پرورش یافته بودند را داشتند و وجود هیچ رقیبی را حس نکرده بودند. دیگر پارامترهای زیستی مطالعه شده (مانند تاخیر در جفت‌گیری و مدت زمان لگد زدن)، تحت تاثیر تیمارها تغییر معنی داری پیدا نکرد. بنابراین شرایط پرورش حشره (فقط وجود یک لوبیا با یک لارو در داخل آن در یک ظرف یا تراکمی از چند لوبیا به همراه تک لارو داخل هر کدام)، اثر معنی داری بر رفتارهای جفت‌گیری حشره در بزرگسالی میگذارد. این امر در طراحی آزمایشهای مختلف باید در نظر گرفته شود.

کلیدواژه‌ها


عنوان مقاله [English]

The study of effect of infected bean density in larval stage on biological parameters and mating behaviors of the cowpea weevil Callosobruchus maculatus

نویسندگان [English]

  • Azam Amiri 1
  • Faezeh Bagheri 2
1
2 Shiraz University2. Faculty member (Assistant Professor), Department of Plant Protection, School of Agriculture, Shiraz University, Shiraz, Iran
چکیده [English]

The cowpea weevil Callosobruchus maculatus (Fabricius, 1775) (Coleoptera: Chrysomelidae) is used as a model insect to study various aspects of biology, behavior, or intraspecific competition due to its short life cycle and ease of breeding. In this study, using beans with an egg, the effect of other larvae in adjacent beans and not in the same bean during the growth period has been investigated on the possible feeling of competition in the insect and mating behaviors in adulthood and biological parameters in the F0 and F1 generations. Developmental time, the number of eggs, hatching percentage, adult longevity, and the sex ratio of the next generation were assessed. The results showed that the larvae of the cowpea weevil were able to detect the presence of larvae in the beans that were in contact with their beans, and they changed their behavior in adulthood under its influence. In adulthood, these insects had a successful mating percentage, and a shorter copulation duration than insects raised alone in a container and did not feel the presence of any competitors. Other studied biological parameters (such as mating latency and kick duration) did not change significantly under the influence of treatments. Therefore, insect breeding conditions (the presence of only one bean with one larva inside it in a container or compaction of several beans with a single larva inside each) significantly affect insect mating behaviors in adulthood. This should be considered in the design of various experiments.

کلیدواژه‌ها [English]

  • Fecundity
  • Competition
  • Cowpea weevil
  • Longevity
  • Copulation
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