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مطالعه واکنش تابعی کفشدوزک Cryptolaemus montrouzieri (Col.: Coccinellidae) روی شپشک آردآلود مو Planococcus ficus (Hem.: Pseudococcidae) | ||
| مهار زیستی در گیاه‌پزشکی | ||
| دوره 7، شماره 2 - شماره پیاپی 14، اسفند 1398، صفحه 127-137 اصل مقاله (206.72 K) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22092/bcpp.2020.122641 | ||
| نویسندگان | ||
| طیبه اکبری* 1؛ حسنعلی واحدی1؛ محمد حیدری2 | ||
| 1گروه گیاه‌پزشکی، پردیس کشاورزی و منابع طبیعی، دانشگاه رازی، کرمانشاه | ||
| 2گروه علوم بیولوژی، وای کالج، دانشگاه لندن، انگلستان | ||
| چکیده | ||
| یکی از معیارهای مهم ارزیابی دشمن طبیعی در مهار زیستی، تعیین واکنش تابعی آن نسبت به تغییرات تراکم میزبان میباشد. شپشک آردآلود مو،Planococcus ficus (Signoret) ، یکی از آفات مهم تاکستانها در جهان است. کفشدوزک شکارگر CryptolaemusmontrouzieriMulsant شناخته شده‌ترین دشمن طبیعی شپشکهای آردآلود است. پژوهش حاضر برای تعیین نوع واکنش تابعی و قدرت جستجوی کفشدوزک یاد شده نسبت به شپشک آردآلود مو انجام شد. در این پژوهش واکنش تابعی لاروهای سن سوم و حشرات بالغ نر و ماده کفشدوزک یاد شده نسبت به تراکمهای 3، 5، 7، 9 عددی حشرات کامل ماده شپشک بهعنوان طعمه، در 10 تکرار و در دمای 1±26 درجه سلسیوس، رطوبت نسبی 5 ±70 درصد و دوره نوری 12:12 (روشنایی: تاریکی) داخل ظروف پتری پلاستیکی به قطر5/7 و عمق یک سانتیمتر و با درپوش منفذدار بررسی شد. تعداد شپشکهای تغذیه شده در هر ظرف ثبت گردید. تجزیه و تحلیل دادههای واکنش تابعی با استفاده از نرم‌افزار SAS و به روش دو مرحلهای جولیانو انجام شد. در این بررسی منفی بودن شیب قسمت خطی منحنی درجه دو رگرسیون لجستیک در حشرات بالغ نر و ماده و در لارو سن سوم کفشدوزک، نشان دهنده واکنش تابعی از نوع دوم است. میزان قدرت جستجو (a) و زمان دستیابی (Th) برای لاروهای سن سوم و حشرات بالغ نر و ماده کفشدوزک بهترتیب (6922/0 بر ساعت و 9549/0ساعت)، (4901/0 بر ساعت و 3542/1 ساعت) و (5977/0 بر ساعت و 0996/1 ساعت) بود. لارو سن سوم دارای قدرت جستجوی بیشتر و زمان دستیابی کمتری نسبت به حشرات بالغ نر و ماده بود. | ||
| کلیدواژه‌ها | ||
| زمان دستیابی؛ شپشک آردآلود مو؛ قدرت جستجو؛ مهار زیستی؛ واکنش تابعی | ||
| عنوان مقاله [English] | ||
| Functional response of mealybug ladybird, Cryptolaemus montrouzieri (Col.: Coccinellidae) on Planococcus ficus (Hem.: Pseudococcidae) | ||
| نویسندگان [English] | ||
| Tayebeh Akbari1؛ Hassanali Vahedi1؛ Mohammad Heidari2 | ||
| 1Department of Plant Protection, Campus of Agriculture and Natural Resources, Razi University, Kermanshah, Iran | ||
| 2Department of Biological Science, Wye College, University of London, England | ||
| چکیده [English] | ||
| One of the parameters used in natural enemies evaluation is functional response studies to predict the efficacy of the predator in biological control programs. The vine mealybug, Planococcusficus (Signoret) is an important vineyard pests in all parts of the world. Cryptolaemusmontrouzieri Mulsant, is a well–known natural enemy of mealybugs. The experiment was conducted under laboratory condition with 26±1°C with 70±5 % RH and 12:12 D:L photoperiod with four densities of adult females of vine mealybug, P. ficus, as host insect. Adult female and male and 3rd instar larval stage of C. montrouzieri and four densities (3, 5, 7 and 9, each with 10 replicates). The number of host killed after 24 hours were recorded. Determination type of functional response model and estimation of related parameters were carried out based on two–stage analysis method by using SAS software. A type 2 functional response was concluded under this experimental condition for all stages of predator using logistic regression with parameters estimated through nonlinear regression. The results for searching efficiency and handling time for 3rd instar larval, adult male and adult female of the predator were (0.6922 and 0.9549 hours), (0.4901 and 1.3542 hours) and (0.5977 and 1.0996 hours), respectively. Results showed that 3rd instar larvae of predator showed a better searching efficiency and lowest handling time rather than adults which is a fine character for a predator. | ||
| کلیدواژه‌ها [English] | ||
| biological control, functional response, handling time, searching efficiency, vine mealybug | ||
| مراجع | ||
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