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本文用电生理的方法,研究了三化螟成虫复眼在不同暗适应过程中感受器内部结构变化的情况,以及这些变化与光激反应所产生的网膜电位的相互关系。通过对复眼的切片观察,发现感受器在暗适应过程中主要变化是:在相同暗适应条件下,屏蔽色素向角膜方向的移动较为一致,随着不同暗适应期而表现为不同的位置。30′—40′时,色素上移至晶锥周围。感受器的电位变化,在30′—40′以前,是随着暗适应时间的延长而增加。40′以后随着暗适应时间的延长而逐渐下降。暗适应的时间达到30′—40′时,感受器电位最高。网膜电流图(ERG)在给光和撤光反应时出现两相波型。复眼完成暗适应的时间,雌蛾为30′—40′,雄蛾为40′—50′。充分完成暗适应后的复眼,在20W的黑光灯下50cm处进行光适应时,由夜眼转为日眼时所需要的时间为10分钟,但在40W的白光灯下的同样距离处则仅仅需要5分钟。本工作表明;羽化后两天内电位较高。雌雄个体之间,以及产卵前后在感受器电位值方面有明显差异。
In this paper, the electrophysiological method was used to study the changes of the internal structure of the sensilla in the eyes of adults of the rice borer, Parametria, in different dark adaptation, and the relationship between these changes and the potential of the omentum produced by the photostimulation. Through the observation of the slices of compound eyes, it was found that the main changes of the receptors in the process of dark adaptation are as follows: under the same dark adaptation conditions, the movement of the shielding pigment to the cornea is consistent, with different dark adaptation periods showing different positions. 30’-40 ’, the color moved to the crystal cone around. The change in sensory potentials, before 30’-40 ’, increased with dark adaptation time. After 40 ’dark adaptation with time and gradually decreased. Dark adaptation of the time reaches 30’-40 ’, the highest receptor potential. The omentum current pattern (ERG) appears as a two-phase pattern during light and light withdrawal. Compound eyes to complete the dark adaptation time, female moths 30’-40 ’, male moths 40’-50’. Fully completed the dark adaptation of the compound eye, 20W in the black light under 50cm light adaptation, the time required for the conversion from the night to the eye for 10 minutes, but the 40W white light at the same distance only Need 5 minutes. This work shows that the potential within two days after emergence is higher. Male and female individuals, as well as before and after spawning in the receptor potential values have significant differences.