| 花椒窄吉丁成虫趋光行为的影响因子及其复眼结构 |
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| 引用本文：刘欣玉,姜娜,戚煜,赵盈盈,白妍妍,王永平,谢寿安.花椒窄吉丁成虫趋光行为的影响因子及其复眼结构.植物保护学报,2025,52(2):418-427 |
| DOI：10.13802/j.cnki.zwbhxb.2025.2024086 |
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| 中文摘要:为揭示花椒窄吉丁Agrilus zanthoxylumi趋光机制和光视觉生理机制，利用光行为学方法测试光源、光照强度、虫口密度和饥饿处理等因子对其趋光行为的影响，通过扫描电镜观察花椒窄吉丁成虫复眼外部形态结构，并测量其复眼的外部形态参数。结果表明：在395~630 nm波谱范围内光源显著影响花椒窄吉丁雌雄成虫混合种群（雌雄成虫比为1 ∶1）的趋光性，其对红光的趋光反应率最高，为79.47%。花椒窄吉丁雌成虫对红光最敏感，雄成虫则对绿光最敏感。除黄光外，蓝光、绿光、橙光和红光刺激后，花椒窄吉丁成虫的趋光反应率随光照强度增加而减小。饥饿处理后，花椒窄吉丁成虫在绿光、黄光、橙光和红光下的趋光反应率均显著低于对照。在绿光和红光刺激下，花椒窄吉丁成虫的趋光反应率随虫口密度增加呈增加的趋势；在蓝光、黄光、橙光和紫外光刺激下，花椒窄吉丁的趋光反应率随虫口密度增加呈先升高后降低的趋势。花椒窄吉丁成虫复眼呈肾形，雌雄成虫复眼外观无差异；其小眼面光滑且较平坦，小眼边缘未见感器，中部小眼为等边六边形，边缘小眼则呈不规则形状；雌成虫小眼数（2 013.00个）显著多于雄成虫（1 973.00个）。表明花椒窄吉丁趋光行为受光源、光照强度、性别、饥饿及虫口密度等因素影响，从复眼结构来看雌成虫的复眼分辨能力强于雄成虫。 |
| 中文关键词:花椒窄吉丁 趋光行为 影响因子 复眼结构 扫描电镜 |
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| Influencing factors of the phototactic behavior of pepper buprestid beetle Agrilus zanthoxylumi and the structure of compound eyes |
| Author Name | Affiliation | E-mail | | Liu Xinyu | College of Forestry, Northwest A&F University, Yangling 712100, Shaanxi Province, China | | | Jiang Na | College of Forestry, Northwest A&F University, Yangling 712100, Shaanxi Province, China | | | Qi Yu | College of Forestry, Northwest A&F University, Yangling 712100, Shaanxi Province, China | | | Zhao Yingying | College of Forestry, Northwest A&F University, Yangling 712100, Shaanxi Province, China | | | Bai Yanyan | College of Forestry, Northwest A&F University, Yangling 712100, Shaanxi Province, China | | | Wang Yongping | Shaanxi Academy of Forestry, Xi' an 710003, Shaanxi Province, China | | | Xie Shou'an | College of Forestry, Northwest A&F University, Yangling 712100, Shaanxi Province, China | shouanxie@163.com |
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| Abstract:In order to reveal the phototaxis mechanism and visual physiological mechanisms of pepper buprestid beetle Agrilus zanthoxylumi, a light behavior-based approach was used to assess the effects of various factors on phototactic behavior, including light source, light intensity, insect density, and starvation treatment. The external morphological structure of compound eyes for A. zanthoxylumi adults was observed by scanning electron microscope, and external morphological parameters were measured. The results indicated that within the wavelength range of 395 to 630 nm, the light source significantly influenced the phototactic responses of both male and female adults of A. zanthoxylumi (with a female-tomale ratio of 1 ∶1). Notably, the phototactic response rate to red light peaked at 79.47%. Female adults demonstrated the highest sensitivity to red light, whereas male adults were most responsive to green light. With the exception of the yellow light, the phototactic response rate decreased as light intensity increased following stimulation by blue, green, orange, and red lights. After starvation treatment, the phototactic response rates of A. zanthoxylumi to green, yellow, orange, and red lights were significantly lower than those in the control group. Under green and red light stimulation, increased insect density correlated positively with higher phototactic response rates in adult A. zanthoxylumi. Conversely, for blue, yellow, orange, and ultraviolet lights, the phototactic response rate first increased and then decreased with rising insect density. The compound eyes of A. zanthoxylumi adults were kidney-shaped, with no discernible differences in external appearance between males and females. The surfaces of the ommatidia were smooth and relatively flat, with no sensilla observed at the edges. The central ommatidia were characterized as equilateral hexagons, while the marginal ommatidia exhibited irregular shapes. The number of ommatidia in females (2 013.00) was significantly higher than in males (1 973.00). These findings demonstrate that the phototaxis of A. zanthoxylumi is influenced by wavelength, light intensity, gender, starvation and population density. Moreover, the sensitive wavelengths differ between female and male adults, with females exhibiting stronger visual resolution in their compound eyes compared to males. |
| keywords:Agrilus zanthoxylumi phototactic behavior influencing factor compound eye structure scanning electron microscope |
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