نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانش‌آموخته کارشناسی ارشد، گروه زیست شناسی، دانشکده علوم، دانشگاه رازی، کرمانشاه، ایران.

2 . دانشیار، گروه زیست شناسی، دانشکده علوم، دانشگاه رازی، کرمانشاه، ایران.

چکیده

مقدمه: در بسیاری از گونه‌های حشرات، همنوع خواری بعنوان یک رفتار طبیعی گزارش شده است و در این رفتار حشرات کامل و لاروها، در نبود غذا از تخم و شفیره تغذیه می کنند. مواد و روش ها: در پژوهش حاضر هفت گروه غذایی که هرکدام حاوی مخلوطی از سبوس‌ گندم با جو، ذرت و نخود است به عنوان محیط پرورش سوسک فراهم شد. اثر گروه های فوق در حضور میوه هویج (دوره سیری) و عدم حضور میوه (دوره گرسنگی) بر رفتار همنوع‌خواری انتخابی حشره کامل و لارو از تخم و سوسک زرد آرد مورد بررسی قرارگرفت. نتایج و بحث: نتایج آنالیز رفتار انتخابی سوسک ها نشان داد که آنها ابتدا تخم‌ها و سپس شفیره ها را ترجیح می‌دهند که احتمالا به علت رفتار جستجوگرانه آنها در بستر محیط پرورش حاوی تخم و همچنین ناتوانی تخم ها در اجتناب از شکار است. در رفتار انتخابی لاروها مشاهده شد که آنها ابتدا به شفیره ها و سپس به حشرات کامل حمله می کنند، که احتمالا به دلیل ناتوانی شفیره در اجتناب از شکار و داشتن بدن نرم و مرطوب می باشد. همچنین نتایج نشان داد که فاکتور تغذیه و کیفیت رژیم غذایی تاثیر معنی داری بر همنوع خواری دارند. در بررسی اثر دوره های گرسنگی (12، 24، 36، 48) بر میزان همنوع‌خواری حشره کامل، ملاحظه شد که حشرات با بیش از 12 ساعت گرسنگی، بیشترین میزان همنوع‌خواری را نشان می‌دهند.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Cannibalistic behavior of the yellow mealworm,( Tenebrio molitor Linnaeus, 1758 ) under laboratory condition

نویسندگان [English]

  • Raziye Rashidi Ilzoleh 1
  • Vahid Akmali 2

1 MSc Graduate, Department of Biology, Faculty of Science, Razi University, Kermanshah, Iran

2 2. Associate Professor, Department of Biology, Faculty of Science, Razi University, Kermanshah, Iran. *Corresponding

چکیده [English]

Introduction: In many insect species, cannibalism has been reported as a natural behavior, and in this behavior, complete insects and larvae feed on eggs and pupae in the absence of food. Materials and methods: In the present study, seven diet groups, each of which contains a mixture of wheat bran with barley, corn, and beetle, were provided as beetle breeding environments. The effect of the above diets groups in the presence of carrot (saturation period) and the absence of fruit (hungry period) on the selective cannibalism behavior of whole insects and larvae from eggs and yellow flour beetle was investigated. Results and discussion: The results of the selective behavior analysis of beetle showed that they prefer eggs first and then pupae, which is probably due to their searching behavior in the bed of the breeding environment containing eggs, as well as the eggs' inability to avoid hunting. In the selective behavior of the larvae, it was observed that they attack the pupae first rather than the complete insects, which is probably due to the inability of the pupae to avoid prey and also having a soft and moist body. Also, the results of this research showed that the nutrition factor and diet quality have a significant effect on cannibalism. In the study of the effect of periods of starvation (12, 24, 36, 48) on the rate of cannibalism of the whole insect, it was observed that insects with more than 12 hours of starvation show the highest rate of cannibalism.

کلیدواژه‌ها [English]

  • starvation period
  • pupa
  • mealworm
  • selective behavior
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