Correlation Analysis of Sitophilus oryzae (Linnaeus) Real-Time Monitoring and Insect Population Density and Its Distribution Pattern in Wheat Grain Piles

Zeyu Zhang, Guoxin Zhou, Cui Miao, Xin Du () and Zhongming Wang ()
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Zeyu Zhang: College of Advanced Agricultural Sciences, Zhejiang Agricultural and Forestry University, Donghu Campus, Hangzhou 310007, China
Guoxin Zhou: College of Advanced Agricultural Sciences, Zhejiang Agricultural and Forestry University, Donghu Campus, Hangzhou 310007, China
Cui Miao: Scientific Research Institute of the National Food and Material Reserves Bureau, Beijing 100037, China
Xin Du: Harry Butler Institute, Murdoch University, 90 South Street, Murdoch 6150, Australia
Zhongming Wang: Scientific Research Institute of the National Food and Material Reserves Bureau, Beijing 100037, China

Agriculture, 2024, vol. 14, issue 8, 1-11

Abstract: The traditional manual sampling method for detecting stored grain insect pests is labor-intensive and time-consuming, often yielding non-representative samples. However, to achieve more accurate monitoring, it is necessary to understand the distribution patterns of different insect pests within grain silo and their correlation with monitoring and sampling data. This study aimed to assess the population density and distribution of Sitophilus oryzae (rice weevil) in bulk wheat grain to predict insect dynamics effectively. Utilizing a probe trap in a wheat silo, adult insects were tracked across different population densities. The traps recorded captured pests, alongside temperature and humidity data. The correlation analysis revealed that rice weevils were active throughout the silo but less prevalent at the bottom, with the highest distribution near the upper surface. Temperature and humidity significantly influenced their activity, particularly within the 22 °C to 32 °C range. Higher population densities correlated with increased relative humidity, impacting weevil activity. Trapping data aligned with overall population density changes in the silo. This study will provide an accurate assessment of the population density of adult rice weevils in grain silos based on temperature changes in the upper part of the grain silo.

Keywords: new pest-trapping device; rice weevil; monitoring; distribution pattern; influencing factors (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2024
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