半导体激光对果蝇的控制效果

Control Effects of Semiconductor Laser on Drosophila Melanogaster

为研究半导体激光对水果的主要虫害———果蝇(drosophila melanogaster)的控制效果,采用响应曲面法设计,实验研究了激光功率和照射时间对果蝇的生物学效应。结果表明,用波长为650 nm的半导体激光照射果蝇幼虫,在功率60 mW,照射1282 s条件下,果蝇幼虫的致死率可达到99%以上,且体重降低、羽化延续时间缩短,激光对果蝇幼虫具有较强生物学致死效应。但当功率低于40 mW时,激光对果蝇产生激励作用,促使果蝇的生长发育。继续用原剂量照射第三代果蝇的幼虫,对比发现在连续多代照射后,果蝇后代并没有产生对激光的抗逆性。为半导体激光在水果病虫害控制中的应用提供了实验依据。

The control effects of the main insect of fruits-drosophila melanogaster were studied with the semiconductor laser in this paper. The experiment was designed with response surface method to investigate the biological effects on drosophila melanogaster with different laser power and irradiation time. The results showed that the death rate was above 99% to the larva of drosophila melanogaster under the conditions of laser power of 60 mW and irradiation time of 1282 s, with semiconductor laser at wavelength of 650 nm. At the same time, the weight of drosophila melanogaster was reduced, and the required eclosion time was decreased. Therefore, the semiconductor laser has strong biological effects to larva of drosophila melanogaster. However, when the power was below 40 mW, the laser light has the effect of promoting the growth of drosophila melanogaster. The experiment demonstrated that drosophila melanogaster did not show anti-laser effects in the third generation under the same experimental conditions compared with the control groups, it is suggesting the possibility of the semiconductor laser application on pest control of fruits.