光谱光照调控组合性光源激发蝗虫趋光效果试验

Effect of Locust’s Phototactic Response to Regulatory Illuminance of LED Light Source

摘要:

针对蝗虫趋光选择性、蝗虫趋光辨识敏感性、频闪交变光照对蝗虫趋光增益特点，利用所研制的阵列条纹调控光照光源，对比优选了蝗虫趋光良好的光谱光照调控组合模式，进行了蝗虫趋光诱导试验，探讨了蝗虫趋光效应激发的机理。结果表明：阵列条纹光谱光照调控组合具有强化蝗虫趋光视觉增益、调控蝗虫趋光视动增效、激发蝗虫趋光聚集效应、削弱蝗虫趋光惰性的功效；蝗虫趋光响应激发效果由阵列条纹光谱光照能量及其调控光照组合方式决定；蝗虫对发光间隔为30ms的阵列频闪紫光与发光周期为640ms的竖条纹交变绿紫蓝光组合光照的趋光响应相对最优。调控光照光源激发饲养棚内蝗虫趋光效果结果表明:20：00~23：00，其调控激发蝗虫趋光效果良好, 光照至24：00，蝗虫趋光总响应率及聚集率分布达到了80%±5%和50%±5%，然而，蝗虫的生物习性及智慧性、蝗虫夜间活力降低的趋光惰性、环境因素、LED光源调控性光照强度增强的限制等制约蝗虫的趋光效应。

Abstract:

According to the phototactic choice, sensitive recognition and phototactic gain stimulated by flashing and alternating light of locust, the regulatory illumination of array stripe light source was used to conduct regulatory illuminance experiment. The different spectral illumination combinations were compared. The mechanism of locust’s phototactic effect was discussed. The results suggested that combined mode of spectral illumination of array stripe and regulatory illumination could enhance locust’s phototactic visual gain, regulate locust’s phototactic optokinetic effect, stimulate locust’s phototactic aggregation effect, and increase locust’s phototactic activity. Locust’s phototactic effect was decided by spectral illumination energy and regulatory illuminance mode of array stripe. The optimum stimulation mode was consisted of 30ms luminous interval of frequency violet light array and 640ms luminous cycle of alternating green-violet-blue vertical stripe light array. The results of locusts stimulated by regulatory illumination of light source in the breeding shed showed that locusts’ phototactic effect was better at 20：00~23：00. When it continue to 24：00, the total response and aggregation rate were 80%±5% and 50%±5%, respectively. The locust’s biological habits and alertness, locust’s phototactic inertia, environmental factors and LED restriction restricted locust’s phototactic effect.