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در واکنش تابعی زمان محدودکننده است یا حد سیری؟ بررسی موردی: واکنش تابعی چند لکهای سن شکارگر Nesidiocoris tenuis روی تخم بید گوجهفرنگی Tuta absoluta | ||
| آفات و بیماری های گیاهی | ||
| دوره 88، شماره 2 - شماره پیاپی 111، اسفند 1399، صفحه 213-226 اصل مقاله (648.39 K) | ||
| نوع مقاله: حشره شناسی کشاورزی | ||
| شناسه دیجیتال (DOI): 10.22092/jaep.2020.127840.1305 | ||
| نویسندگان | ||
| فاطمه شهریاری نسب* 1؛ شهزاد ایرانی پور1؛ شهریار عسگری2 | ||
| 1گروه گیاهپزشکی، دانشکده کشاورزی، دانشگاه تبریز، تبریز، ایران | ||
| 2مرکز تحقیقات کشاورزی و منابع طبیعی ورامین، ورامین، ایران | ||
| چکیده | ||
| یکی از روشهای بررسی کارایی شکارگر بهعنوان عامل کنترل بیولژیک ، مطالعهی واکنش تابعی میباشد. در واکنش تابعی کلاسیک دو فرض وجود دارد: 1- شکار پراکنش مکانی تصادفی دارد 2-نرخ شکارگری با زمان محدود میگردد. در این مطالعه عامل محدود کنندهی نرخ شکارگری پورهی سن اول و پنجم و مادهی بالغ Nesidiocoris tenuis روی تخم بید گوجهفرنگی، در قالب واکنش تابعی چندلکهای بررسی شد. دو مجموعه تراکم طعمه در اختیار شکارگر قرار گرفت بهطوریکه بیشترین تراکم یا مجموع تراکم طعمه در همه لکهها برابر با حد سیری شکارگر باشد. زمان آزمایش برای حشرات کامل ماده و پورهی سن پنجم 1، 2 و 3 ساعت و برای پوره سن اول 1، 5/1 و 2 ساعت بود. نتایج نشان داد کهشکارگرقبل از آنکه با زمان محدود شود با گنجایش معدهی خود محدود شده است. واکنش تابعی هر سه مرحلهی زیستی شکارگر از نوع دوم بود و فراسنجه های Th و a' برای پوره سن اول و پنجم و مادهی بالغ،،بهترتیب، 033/4 دقیقه و 0385/0 بر دقیقه، 517/3 دقیقه و 0305/0 بر دقیقه و 512/2 دقیقه و 0278/0 بردقیقه برآورد شد. براین اساس، N. tenuis میتواند بهعنوان یک عامل کنترل بیولژیک کارآمد برای بید گوجهفرنگی در نظر گرفته شود. | ||
| کلیدواژهها | ||
| زمان لکه؛ کنترل بیولژیک؛ نرخ شکارگری | ||
| عنوان مقاله [English] | ||
| Is functional response a time-limited response or rather limited by satiation? Case study: Multi patch functional response of predatory bug, Nesidiocoris tenuis Reuter (Hem.: Miridae) on eggs of Tuta absoluta Meyrick (Lep.: Gelechiidae) | ||
| نویسندگان [English] | ||
| Fatemeh Shahriari nasab1؛ Shahzad Iranipour1؛ Shahriar Asgari2 | ||
| 1Department of Plant Protection, Faculty of Agriculture, University of Tabriz, Tabriz, Iran | ||
| 2Agriculture and Natural Resources Research Center of Tehran, Varamin, Iran | ||
| چکیده [English] | ||
| Functional response is one of the standard criterions to detect the efficiency of a predator as a biocontrol agent. Classic functional response experiments include two fundamental assumptions: 1) the prey is evenly distributed in space; 2) predation rate is often time-limited. In this article, the limiting factor of Nesidiocoris tenuis (Hem.: Miridae) was investigated on tomato leafminer eggs. Multi-patch functional response experiments were carried out using first and fifth instar nymphs and females of the predator. Two set of prey densities exposed to the predator included the upper density or the total number of prey available in all patches equated satiation level. Experiments were conducted by three available times; 1, 2 and 3h for fifth instar nymphs and females, and 1, 1.5 and 2h for the first instar nymphs. The results showed that the predator is limited by volume of its gut rather than by time. The functional response of all stages was from type II. The values of Th and a' were estimated as 4.033 min and 0.0385 min-1 for first instar nymph, 3.517 min and 0.0305 min-1 for fifth instar nymph and 2.512 min and 0.0278 min-1 for female. According to this study, N. tenuis could be considered as an efficient biocontrol agent of tomato leafminer. | ||
| کلیدواژهها [English] | ||
| Biocontrol, patch-time, sreaching rate | ||
| مراجع | ||
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