Comparative development, reproduction and life table parameters of three populations of Thrips tabaci (Thysanoptera: Thripidae) on onion and tobacco
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Abstract:
طول دوره‌ی رشد، تولید مثل و پارامترهای جدول زندگی سه جمعیت تریپس پیاز، Thrips tabaci Lindeman، شامل خراسان رضوی و گلستان روی پیاز و مازندران روی توتون در شرایط آزمایشگاهی (دمای ٢5 درجه‌ی سانتیگراد، رطوبت نسبی 5٠ درصد و طول دوره‌ی روشنایی به تاریکی ١٦ به ۸ ساعت) مطالعه شد. طول دوره‌ی زندگی از تخم تا مرحله‌ی بلوغ در جمعیتهای خراسان رضوی، گلستان و مازندران به ترتیب برابر با ٢٢/١5، ٦٦/١4 و ۸٢/١٧ روز بود. مرگومیر پیش از بلوغ در این سه جمعیت به ترتیب برابر با ٣٠، ٣۸ و 5۸ درصد بود. افراد ماده‌ی جمعیتهای خراسان رضوی، گلستان و مازندران به ترتیب میانگین تخمی برابر با 5/٢۹، ٧/٢٧ و ٣/٢٦ عدد تخم و میانگین طول عمری برابر با ٠/١۸، ٧۸/١٧ و ٠٧/١۹ روز داشتند. نرخ خالص تولیدمثل (R0) در جمعیتهای فوق به ترتیب ٧5/١۹، 4۸/١۸ و ۸4/١٠ و نرخ ذاتی رشد (rm) به ترتیب ١4٣/٠، ١4١/٠ و ٠۹٦/٠ بود. جمعیتهای خراسان رضوی و گلستان (هر دو روی پیاز) دوره‌ی رشدی، مرگومیر، و پارامترهای جدول زندگی مشابهی داشتند در حالیکه جمعیت مازندران (روی توتون) از نظر ویژگیهای فوق، اختلافات معنیداری با آن‌ها داشت. بر اساس اختلافات موجود بین طول دوره‌ی رشد پیش از بلوغ، باروری و پارامترهای جدول زندگی، ممکن است دو جمعیت مجزا از این آفت روی توتون و پیاز در ایران وجود داشته باشد.
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Journal title
volume 29 issue 1
pages 11- 23
publication date 2009-08-23
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