The function of the insect ocellus.
The function of the insect ocellus.
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昆虫眼的功能。
DOI：
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发表时间：
1947
影响因子：
2.8
通讯作者：
D. Parry
中科院分区：
文献类型：
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作者：
D. Parry
许多昆虫具有两种类型的眼睛：复眼和单眼或背单眼。关于昆虫的视觉能力已经做了很多工作，人们知道，这些几乎完全是由于复眼的存在和形式。对形状和颜色的感知，以及对视野中运动的欣赏，是其公认的功能。目前还没有明确的功能被赋予背单眼。这个器官的光学系统是这样的，没有图像可以在视网膜上形成。它在纲内的发生极不稳定，与其发生的昆虫的生活方式或系统位置没有明显的关系。另一方面，失去单眼的昆虫表现出某些行为上的特殊性，这表明单眼在某种程度上与动物对光的反应有关。本研究的目的是获得更多的了解单眼的功能，主要是通过记录单眼刺激的神经反应。飞蝗（Locusta migratoria migratoroides）提供了一个足够大的制备物，可以将电极放置在单眼神经上，并放大和记录那里发生的电变化。它也被证明是可能的记录从环食管连合，从而调查，在一个点更接近运动系统，刺激单眼和切割单眼神经的影响。此外，还获得了有关单眼在昆虫中的分布、单眼的光学系统和单眼神经的组织学的信息。
INTRODUCTION Many insects possess two types of eye: a compound eye and a simple eye or dorsal ocellus. Much work has been done on the powers of vision in insects, and it is known that these are almost entirely due to the presence and form of the compound eye. The perception of form and colour, and the appreciation of movement in the visual field, are its recognized functions. No such clearly defined functions have yet been assigned to the dorsal ocellus. The optical system of this organ is such that no image can be formed on the retina. Its occurrence within the class is extremely erratic and bears no apparent relation to the mode of life or the systematic position of those insects in which it occurs. On the other hand, insects deprived of their ocelli show certain peculiarities of behaviour, which suggest that the ocellus is in some way concerned in the response of the animal to light. The object of the present research was to obtain more knowledge of the function of the ocellus, primarily by recording the nervous response to ocellar stimulation. The migratory locust (Locusta migratoria migratoroides) provides a preparation just large enough for electrodes to be placed on the ocellar nerve and electrical changes occurring there to be amplified and recorded. It has also proved possible to record from the circum-oesophageal commissure and thus to investigate, at a point nearer the motor system, the effects of stimulating the ocellus and cutting the ocellar nerves. Information has also been obtained on the distribution of the ocellus among insects, the optical system of the ocellus, and the histology of the ocellar nerve.