Effect of sugarcane and corn odors on adult oviposition and larval feeding behavior in the Asian corn borer (Ostrinia furnacalis)
Author of the article:JIANG Xing-Chuan** XIE Xing-Wei** LI Xiang DONG Wen-Xia XIAO ChunCHEN Bin YAN Nai-Sheng LI Zhe
Author's Workplace：College of Plant Protection, Yunnan Agricultural University, Agro-Biodiversity and Pest Management of Education Ministry of China, Yunnan Key Laboratory Agro-Biodiversity and Conservation, Kunming 650201, China
Key Words： sugarcane (Saccharum officinarum), corn (Zea mays), Asian corn borer (Ostrinia furnacalis), odor, oviposition, feeding
Abstract： [Objectives] How plant odors affect the behavior of the Asian corn borer (Ostrinia furnacalis) in a sugarcane and corn intercropping system was studied in order to provide information to help control this pest. [Methods] The effect of sugarcane (Saccharum officinarum) and corn (Zea mays), and a dichloromethane rinse of extracts of these plants, on adult oviposition and the larval feeding behavior in the Asian corn borer was investigated. [Results] There was no difference in the number of eggs (egg number and egg mass) laid on corn leaves and on sugarcane leaves, but significantly less larvae fed on sugarcane leaves than on corn leaves. Both sugarcane and corn extracts elicited EAG responses from adults, but these did not differ when the extracts were at the same concentration. There was no significant difference in the number of eggs (egg number and egg mass) laid by female moths exposed to leaf extract of sugarcane and corn at a concentration of 0.1 gE/mL. The relative feeding rates of larvae were less than 65.00% when fed on an artificial diet treated with sugarcane extract, significantly less than when the same diet was treated with corn extracts. [Conclusion] There was no difference in the oviposition behavior of the Asian corn borer in response to sugarcane and corn odors but first instar larvae showed aversion responses to sugarcane odor.