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Mating behavior and sex pheromone release rhythm of Holotrichia parallela(Coleoptera: Melolonthidae)

Oil Crop Science 2019年第1期4卷 10-16页

作者： Zhen Yang Dan Liang Qian Ju Quansen Chen Xiao Li Xiaojing Jiang Maohua Chen Weiqiang Yang Mingjing Qu Shandong Peanut Research Institute/Key Laboratory of Peanut Biology and Genetic Improvement Ministry of Agriculture Qingdao Institute of Measurement and Testing Key Laboratories of Plant Protection Resources and Pest Management of Ministry of Education

Mating behavior and sex pheromone release rhythm of Holotrichia parallela was studied in this research. The maximum mating times were 3 for female and 4 for male. Average mating times were 1.06 for female and 0.91 for male. L-isoleucine methyl ester(LIME), a major component of pheromone, increased gradually from 14:00 and peaked at 19:00, then dropped sharply at 20:00 and remained low at 24:00.(R)-(-)-linalool(referred as linalool below) maintained similar levels throughout the study period. Calling and mating activity significantly decreased LIME titer, but not linalool. Analyses of 11 samples collected during calling days(20 d-70 d) revealed that LIME production was affected by female age. LIME titers increased from 20 d to 45 d, and decreased from 45 d to 70 d. While linalool titers remained at similar levels at all sampling dates. The highest ratio between LIME and linalool was 12 and the lowest was 4. Field tests confirmed that the most attractive ratios of LIME: linalool in early season(June 1 to 20) and late season(August 1 to 20) were 6:1, while in the most serious injury stage(June 20 to August 1) was 12:1. This is the first report about circadian rhythmicity of sex pheromone in Holotrichia parallela, which provides a basis for controlling it in field.

关键词： pheromone release rhythm mating times pheromone lure, field test

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