مهدیه, بذرافشان and دكتر جبرائيل, رزمجو and دکتر محمدرضا, دماوندیان and دكتر علی اصغر, فتحی and مهندس نادر, قائمی (2009) Population dynamics of white peach scale, Pseudaulacaspis pentagona and its important enemies in Mazandaran province. Masters thesis, University of Mohaghegh Ardabili.
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Abstract
In this research, the biology of mulberry scale, Pseudaulacaspis pentagona Targioni, was studied on peach and kiwi plants in field conditions. The results showed that, P. pentagona has three generations per year and overwinters as fertile famales. Peak of the pest density on peach observed in the first generation in April and on kiwi in third generation. Also, the development time and fecundity of the pest were investigated on peach, kiwi and mulberry. The development time of female was generally longer on peach and shorter on kiwi. The development time of male had no significant differences among three hosts tested. Fecundity of mulberry scale had significant differences among kiwi, peach and mulberry hostes. Fecundity was higher on peach than on other hosts. Prospaltella berlesei and Chilocorus bipustulatus were the most common natural enemies of mulberry scale. When parasitism rate and population of predator increased, population of this pest would decreased. Also, the parasitism rate of mulberry scale by P. berlesei was higher in kiwi than peach garden. And the population of C. bipustulatus was higher in peach than kiwi garden.
Item Type: | Thesis (Masters) | ||||||
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Persian Title: | تغییرات جمعیت شپشک توت Pseudaulacaspis pentagona و دشمنان طبیعی مهم آن در استان مازندران | ||||||
Persian Abstract: | در اين تحقيق تغييرات جمعيت و زيست شناسي شپشك توت با نام علمي P. pentagona در شرايط مزرعه¬اي و روي دو ميزبان هلو و كيوي مورد بررسي قرار گرفت. طبق اين مطالعه، شپشك توت روي هر دو ميزبان داراي سه نسل بوده و زمستان را به صورت ماده¬ي بارور سپري مي¬كند. اوج تراكم آفت روي ميزبان هلو در نسل اول و اواخر ارديبهشت ماه و روي ميزبان كيوي در نسل سوم و اواسط شهريور ماه بود. همچنين طول دوره يك نسل حشره و باروري آن روي ميزبان¬هاي هلو، كيوي و توت سفيد تحقيق شد. حشره ماده طولاني¬ترين دوره نشو نما را روي ميزبان هلو و كوتاه¬ترين طول دوره نشو و نما را روي ميزبان كيوي داشته است. باروري شپشك روي ميزبان¬هاي مختلف داراي اختلاف معني-دار بود و بالاترين نرخ باروري را روي ميزبان هلو داشت. همچنين زنبور پارازيتوئيد Prospaltella berlesei و كفشدوزك Chilocorus bipustulatus به عنوان مهم¬ترين دشمنان طبيعي آفت در دو باغ هلو و كيوي شناسايي شدند. ميزان پارازيتيسم زنبور فوق در باغ كيوي و نيز جمعيت كفشدوزك در باغ هلو بيشتر از باغ ديگر بود و با افزايش درصد پارازيتيسم و همين¬طور جمعيت شكارگر، جمعيت آفت كاهش يافت. | ||||||
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Subjects: | Faculty of Agricultural Sciences & Natural Resources > Department of Plant Protection Divisions > Faculty of Agricultural Sciences & Natural Resources > Department of Plant Protection Faculty of Agricultural Sciences & Natural Resources > Department of Plant Protection |
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Divisions: | Subjects > Faculty of Agricultural Sciences & Natural Resources > Department of Plant Protection Faculty of Agricultural Sciences & Natural Resources > Department of Plant Protection Faculty of Agricultural Sciences & Natural Resources > Department of Plant Protection |
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Date Deposited: | 03 Jul 2019 07:09 | ||||||
Last Modified: | 03 Jul 2019 07:09 | ||||||
URI: | http://repository.uma.ac.ir/id/eprint/7255 |
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