华山松大小蠹对LED灯的趋光行为
Phototaxis of Dendroctonus armandi adults to LED lights
查玉平；张子一 ；陈京元； 洪承昊；程 宇；华 祥；易家喜
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DOI：10.7679/j.issn.2095-1353.2019.152
作者单位：湖北省林业科学研究院，武汉 430075； 湖北生态工程职业技术学院，武汉 430200；神农架林区林业有害 生物防治检疫站，神农架 442400；神农架林业有害生物天敌繁育场，神农架 442400
中文关键词：华山松大小蠹；光谱；趋光；避光；LED
英文关键词：Dendroctonus armandi; spectra; phototaxis; photophobism; LED
中文摘要：【目的】 研究不同波长的LED光源对华山松大小蠹Dendroctonus armandi Tsai et Li成虫趋光行为的影响，为研发华山松大小蠹专用LED诱虫灯提供科学依据。【方法】 通过室内行为学试验分析不同波长和强度的LED灯光对华山松大小蠹的引诱效果，以及雌、雄虫趋光行为的差异。【结果】 华山松大小蠹雌雄虫对365-665 nm范围内的6种LED光（光强为1 000 lx）都具有趋性。雌成虫对紫外光（365- 370
nm）最为敏感，趋光率为60%；雄虫则对绿光（515-535 nm）最敏感，趋光率为52.5%。雌、雄虫均不存在避光行为反应，避光率为0。在红光区（655-665 nm），华山松大小蠹的趋光行为存在性别差异（P<0.01）；但其他光波范围内，其趋光行为不存在性别差异（P>0.05）。在一定光波范围内，光强对于华山松大小蠹成虫的趋光行为也有较大的影响。紫外光区（365-370 nm）内，雌、雄虫在不同光强下的趋光行为都存在显著差异，并且在1 000 lx光强下的趋光率最高。【结论】 华山松大小蠹成虫的感光系统存在一定的性别差异，而且雄虫对光强变化更为敏感。研究结果为研发华山松大小蠹专用诱虫灯提供参考。
英文摘要：[Objectives] To develop a specialized light trap for Dendroctonus armandi Tsai et Li. [Methods] The phototactic response of adult D. armandi beetles to LED lights of
different wavelengths was studied in a laboratory and the relative
attractiveness of different wavelengths to both male and female adults
analyzed. [Results] All light wavelengths tested（365-665 nm, 1 000 lx）elicited phototactic
behavioral responses. Female adults were most sensitive to ultraviolet light (365-370
nm) with a 60% phototaxis rate, whereas males were most sensitive to green light (515-535 nm)
with a 52.5% phototaxis rate. Neither sex was photophobic to any wavelength.
The sexes differed significantly (P<0.01) in their response to red
light (655-665 nm) but not to any other wavelength (P>0.05).
Light intensity had a significant effect on phototaxis in the ultraviolet
region (365-370 nm); both sexes were most attracted to a light intensity of 1
000 lx. [Conclusion] Males are more sensitive to light
intensity, which suggests that there could be sexual differences in the
photoreceptor system of adult D. armandi. These results provide a
scientific basis for research and development of a light trap for adult D. armandi.