两种光源对金龟子的诱捕效果

Trapped effects of two lights on the scarab (Coleoptera: Scarabaeidae)

为了解探照灯和测报灯两种光源对金龟子的诱捕效果,2015-2018年,在漯河市农业科学院五里岗试验基地设置探照灯和测报灯,对金龟子种群进行了诱捕监测。结果表明:暗黑鳃金龟和铜绿丽金龟是漯河地区上灯金龟子的优势种。探照灯监测到的暗黑鳃金龟年度首现日比测报灯早7±7.80 d,年均诱捕数量比测报灯多出24137.75±12724.78头,占金龟子总量的百分比增加20.8±4.4(SE);探照灯监测到的铜绿丽金龟年度首现日比测报灯晚5±3.60 d,年均诱捕数量比测报灯减少1793.75±504.02头,占金龟子总量的百分比减少12.4±1.6;全光谱(380~680 nm)的探照灯对暗黑鳃金龟的诱捕作用显著高于紫外光(主波长365 nm)的测报灯,而对铜绿丽金龟诱捕作用显著低于测报灯。这一结果暗示着可见光具有对暗黑鳃金龟相对专性的诱捕潜能。

Scarabs(Coleoptera:Scarabaeidae)have strongly phototaxis in the evening and night.We trapped and monitored them with two lights,the searchlight(SL,wavelength 380 nm^680 nm)and monitoring light(ML,main wavelength 365 nm)in the experimental based of Luohe Institute of Agri Sci.There were two dominant scarabs,Holotrichia parallela Motschulsky and Anomala corpulenta Motschulsky,during 2015 and 2018 in this area.The first emergence date of H.parallela under SL advanced 7±7.80 days/year earlier than ML.The number and percentage of total individual of trapped H.parallela with SL 24137.75±12724.78/year and 20.8±4.4%/year more than ML respectively.On the contrary,The first emergence date of A.corpulenta under SL delayed 5±3.60 days/year later than ML.The number and percentage of total individual of trapped A.corpulenta with SL were 1793.75±504.02/year and 12.4±1.6%/year less than ML respectively.The results indicated that SL had a stranger trapped effect on H.parallela than ML,but opposite on A.corpulenta.The effect implied that visible light eliminated ultraviolet has a special phototaxis on H.parallela in this family.