乙酯类挥发物及诱剂对沙棘绕实蝇的引诱效果

【目的】沙棘绕实蝇Rhagoletis batava Hering是近年来在新疆阿勒泰地区新发现的沙棘果实重要害虫,研究沙棘绕实蝇监测和绿色防控的新途径。【方法】在田间悬挂黄板组合不同乙酯类挥发物及诱剂对沙棘绕实蝇进行诱捕试验。以黄板、三角形诱捕器、实蝇专用蘑菇形诱捕器、白色粘虫板作为载体测试其对沙棘绕实蝇的引诱剂效果。【结果】经单因素方差分析,黄板作为载体,与其他处理相比诱捕量具有极显著差异(P ＜ 0.01),平均诱捕量为18.33头/张;悬挂密度以每667 m²悬挂40张诱捕效果最佳,蛀果率为8.27%。沙棘绕实蝇引诱剂诱集数量主要集中在前4 d。不同乙酯类挥发物及诱剂对沙棘绕实蝇成虫诱捕效果为顺序为沙棘绕实蝇引诱剂＞RDKS＞月桂酸乙酯=十四酸乙酯=棕榈酸乙酯=桔小实蝇引诱剂。【结论】沙棘绕实蝇引诱剂组合黄板对沙棘绕实蝇成虫具有极好的引诱效果,并筛选出一种挥发物RDKS对沙棘绕实蝇两性成虫均有较好的引诱效果,可作为沙棘绕实蝇引诱剂的成分之一,这两种引诱剂结合黄板可作为沙棘绕实蝇监测和防治的有效手段之一。

Study on the Seductive Effects of Ethyl Ester Volatiles and Attractants on Rhagoletis batava Hering

【Objective】 The seductive effects of volatiles and attractants from six different ethyl ester sources on Rhagoletis batava Hering were studied in order to provide scientific basis for dynamic monitoring of Rhagoletis batava Hering populations and pollution-free control. 【Method】Volatiles from different ethyl ester and attractants of Rhagoletis batava Hering were used for trapping experiments by hanging a yellow armyworm board in the field. 【Result】Single factor analysis of variance showed that the seductive effects of volatiles and attractants from six different ethyl ester on the adults of Rhagoletis batava Hering were different in the field. The attractants with yellow sticky insect board had the best effect, with an average trapping capacity of 18.33 sticky insect boards per sheet, which was significantly different from other carriers (P < 0.01); The yellow armyworm plate combining attractants had the longer retention time and the average trapping numbers in each period compared with the yellow armyworm plate used alone, the number of trapping was mainly concentrated in the first 4 days; the suspension density was the best with 40 traps per 667 m² . The effects of different ethyl ester volatiles and inducers on the insect trap of Rhagoletis batava Hering was the sequence as follows: Rhagoletis batava Hering inducer＞RDKS＞Ethyl laurate = Ethyl myristate = Ethyl palmitate = Attractant BDH.【Conclusion】A botanical volatile, RDKS, was screened,which had a strong seductive effect on both sexes adults of Rhagoletis batava Hering, the attractants combined with the yellow armyworm plate had good effects and can be used as a dynamic monitoring and non-chemical control method for Rhagoletis batava Hering.