نیاز دمایی مراحل مختلف رشدی سن گندم Eurygaster integriceps Puton (Hemiptera: Scutelleridae)

نوع مقاله : مقاله کامل، انگلیسی

نویسندگان

1 بخش تحقیقات سن، موسسه تحقیقات گیاه پزشکی کشور، تهران، ایران

2 آزمایشگاه تحقیقات حشره‌شناسی، دانشگاه ورمونت، ورمونت، ایالات متحده آمریکا

10.61186/jesi.45.2.1

چکیده

سن گندم، Eurygaster integriceps مهمترین آفت گندم و جو در سراسر آسیای غربی و مرکزی است. در این مطالعه اثرات دما بر رشد و بقای مراحل مختلف سن گندم بررسی شد. نیاز دمایی برای هر مرحله به طور جداگانه تعیین شد تا مبنای یک مدل فنولوژی برای بهبود کنترل شیمیایی فراهم شود. روش رگرسیون خطی استاندارد و روش ایکموتو و تاکای برای مدل‌سازی رشد مراحل مختلف رشدی سن گندم در دماهای ثابت برای تعیین آستانه پایین دما (T0) و نیازهای دمایی (درجه روز ،DD) مقایسه شدند. روش ایکموتو و تاکای برازش بهتر و کمترین خطای استاندارد را برای پارامترهای مورد نظر داشتند. بنابراین، مدل ایکموتو و تاکای برای برآورد پارامترهای بحرانی، آستانه دمای پایین (T0) و نیاز دمایی برای مراحل مختلف رشدی سن گندم انتخاب شد. دمای آستانه پایین تخمین زده شده با روش ایکموتو و تاکای برای تخم ، پوره سن 1، 2، 3، 4 و 5 به ترتیب 226/16، 761/14، 645/16، 675/20، 489/21 و 229/19 درجه سلسیوس بود. نیاز دمایی به ترتیب 224/51، 279/34، 017/61، 365/33، 477/34 و 981/69 روز-درجه بود. نتایج این مطالعه ممکن است برای پیش‌بینی پویایی جمعیت سن گندم مفید بوده و اطلاعاتی در مورد این آفت مهم ارائه می‌کند که ممکن است برای مدیریت آن مفید باشد.

چکیده تصویری

نیاز دمایی مراحل مختلف رشدی سن گندم Eurygaster integriceps Puton (Hemiptera: Scutelleridae)

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Temperature requirements for immature stages of Sunn Pest, Eurygaster integriceps Puton (Hemiptera: Scutelleridae)

نویسندگان [English]

  • Masoud Amir Maafi 1
  • Bruce L. Parker 2
1 Iranian Research Institute of Plant Protection, Tehran, Iran
2 Entomology Research Laboratory, University of Vermont, 661 Spear Street, Burlington, VT 05405-0105, USA
چکیده [English]

Sunn Pest, Eurygaster integriceps is a serious insect pest of wheat and barley throughout West and Central Asia. Effects of temperature on the development and survival of different stages of E. integriceps were studied. The thermal requirements for each stage were determined separately to provide the basis of a phenology model designed to improve chemical control. The standard linear regression method and the Ikemoto and Takai method of insect development were compared for the goodness of fit to the different stage development of Sunn Pest at constant temperatures to determine a developmental lower threshold (T0) and degree day (DD) requirements for each stage separately. Of the two methods, the Ikemoto and Takai method had the better fit and lowest standard error for the parameters of interest. Thus, the Ikemoto and Takai model was chosen to estimate the critical parameters, lower temperature threshold (T0), and thermal constant for different stages of development of Sunn pest. The estimated low-threshold temperature by Ikemoto and Takai method for egg, NI, NII, NIII, NIV, and NV were 16.226, 14.761, 16.645, 20.675, 21.489 and 19.229 °C respectively. The thermal constants were 51.224, 34.279, 61.017, 33.365, 34.477 and 69.981 DD (Degree-day), respectively). Results are useful for predicting the population dynamics of E. integriceps and thus provide information on this important insect pest that may assist in its management.

کلیدواژه‌ها [English]

  • Population dynamics
  • degree-day
  • lower temperature threshold
  • thermal constant

© 2025 by Author(s), Published by the Entomological Society of Iran

This Work is Licensed under Creative Commons Attribution-Non-Commercial 4.0 International Public License.

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