Preference of Batocera horsfieldifor adults to feeding plants
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Key Words：Batocera horsfieldi, host selection, volatile, behavioral selectivity
Abstract：The preference of Batocera horsfieldi Hope adults to various feeding plants was investigated in both field and laboratory. The highest selection rate on Viburnum awabuki and Betula luminifera by B. horsfieldi adults in field was 100% and 92.4%, respectively. Y-tube olfactometer was used to test the role of volatiles from V. awabuki, B.luminifera, Jugians regia L., and Populus tomentosa in host preference of the adults. The results from Y-tube experiment were consistent with the observation in the field. The volatiles from V. awabuki and B.luminifera had strong attractive effect on adults, and the volatiles from their branches had stronger attractant effect than those from leaf. The dichloromethne crude extraction of branches and leaves of V.awabuki by distillation, and aether crude extraction of branches and leaves of both V. awabuki and B.luminifera by soaking were all effective attractrants to the adults.