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Issue:ISSN 2095-1353
           CN 11-6020/Q
Director:Chinese Academy of Sciences
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Your Position :Home->Past Journals Catalog->2019年56 No.3

Modelling the relationship between adult Bactrocera minax numbers and ratio of oviposition scars during the peak foraging period
Author of the article:MA Hai-Quan** LIANG Ling-Yun** CHENG Xiao-Qin WANG Shan- Shan ZHANG Hong-Yu***
Author's Workplace:(Institute of Urban and Horticultural Pests, China-Australia Joint Centre for Horticultural and Urban Pests, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China)
Key Words:Bactrocera minax; adult occurrence amount; the ratio of oviposition scars; prediction and forecast
Abstract:

[Objectives]  To provide a theoretical basis for predicting the ratio of oviposition scars, and identify adult control indicators, from adult numbers during the peak B. minax foraging period, thereby improving the ability to predict outbreaks of, and control, this pest. [Methods]  Adult numbers and oviposition scars in fields, citrus orchards, hybrid forests, junction zones and the center of citrus orchards, were measured and a regression model of the relationship between adult numbers and oviposition scars in different habitats developed. [Results]  With the exception of hybrid forest around citrus orchards where the relationship between adult numbers and oviposition scars was low (R2 < 0.800 0), linear, and non-linear, regression models were able to predict the ratio of oviposition scars of B. dorsalis during the peak foraging period. However, the coefficient of determination for the ratio of oviposition scars was higher in the center of citrus orchards (R2=0.957 5, RMSE=1.623) than in fields (R2=0.945 4, RMSE=1.859), the junction zone between citrus orchards (R2=0.898 2, RMSE=2.535) or hybrid forests (R2=0.851 5, RSME=3.038). [Conclusion]  The ratio of oviposition scars can be predicted from adult abundance with linear regression. Considering the need for control, a trapping point can be established in the center of citrus orchards and the ratio of oviposition scars (y) can be predicted from adult numbers during the peak foraging period using the following equation: (x), y=0.031 3 x3-1.306 5x2+17.206 0x-17.036 .

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