Population Fluctuation and Spatial Distribution Pattern of Sesamia cretica Led. (Lepidoptera: Noctuidae) in Southeastern Tehran, Iran
Publish Year: 1399
نوع سند: مقاله ژورنالی
زبان: English
View: 62
This Paper With 15 Page And PDF Format Ready To Download
- Certificate
- من نویسنده این مقاله هستم
استخراج به نرم افزارهای پژوهشی:
شناسه ملی سند علمی:
JR_JASTMO-23-2_011
تاریخ نمایه سازی: 23 آبان 1402
Abstract:
Population density and dispersion pattern of Sesamia cretica Led. was determined in maize fields in Varamin (Ahmadabad and Khaveh) and Rey (Aminabad and Talebabad) areas (Tehran, Iran) during two agricultural seasons, ۲۰۱۷ and ۲۰۱۸. A whole plant of maize was selected as a sampling unit to estimate the number of S. cretica larvae. The highest population density of S. cretica larvae per plant was recorded on the ۴th and ۸th October in Aminabad, ۱۷th and ۲۰th September in Talebabad, ۶th and ۱۷th September in Ahmadabad and Khaveh, in ۲۰۱۷ and ۲۰۱۸, respectively. Mean densities of the larvae per plant were ۵۲.۶۲±۱۲.۵۳, ۱۰.۵۰±۲.۸۵, ۱۷.۴۵±۳.۴۸, ۷.۵۷±۱.۵۵ in ۲۰۱۷ and ۱۲.۰۰±۵.۲۹, ۱.۰۰±۰.۳۰, ۱۱.۰۵±۲.۳۶, ۱۲.۰۰±۳.۴۱ in ۲۰۱۸ in Aminabad, Talebabad, Ahmadabad, and Khaveh, respectively. The population of captured male adults in all fields in the second year was less than the first one. Peak numbers of male moths had a difference of ۱۰-۲۲ days between the two studied years. Based on the index of dispersion, the spatial distribution of S. cretica larvae in all fields in both areas was aggregated during the two years of study, except for Aminabad in ۲۰۱۸. According to Taylor’s power law, S. cretica in Ahmadabad and Aminabad in ۲۰۱۷ had a random pattern, while in all fields of the other regions it had an aggregated spatial distribution during ۲۰۱۷ and ۲۰۱۸. In Iwao's model, the regression between the mean crowding and the density was not significant in Aminabad and Khaveh in ۲۰۱۷ and Talebabad in ۲۰۱۸, while in the other fields indicated the aggregated spatial distribution. The lowest estimate of the sample size was computed by using Taylor’s power law. The results revealed that population fluctuation of S. cretica was affected by the region, but in spatial distribution pattern, the oviposition behavior of the pest was a much more determining factor than the region. The coefficients of the spatial pattern can be used for improving the sampling program to calculate the population density of S. cretica precisely.
Keywords:
Authors
R. Arbabtafti
Department of Entomology, Faculty of Agriculture, Tarbiat Modares University, P. O. Box: ۱۴۱۱۵-۳۳۶, Tehran, Islamic Republic of Iran.
Y. Fathipour
Department of Entomology, Faculty of Agriculture, Tarbiat Modares University, P. O. Box: ۱۴۱۱۵-۳۳۶, Tehran, Islamic Republic of Iran.
H. Ranjbar Aghdam
Iranian Research Institute of Plant Protection, Agricultural Research, Education and Extension Organization (AREEO), Tehran, Iran.
مراجع و منابع این Paper:
لیست زیر مراجع و منابع استفاده شده در این Paper را نمایش می دهد. این مراجع به صورت کاملا ماشینی و بر اساس هوش مصنوعی استخراج شده اند و لذا ممکن است دارای اشکالاتی باشند که به مرور زمان دقت استخراج این محتوا افزایش می یابد. مراجعی که مقالات مربوط به آنها در سیویلیکا نمایه شده و پیدا شده اند، به خود Paper لینک شده اند :