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KMID : 0364219850280020085
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Korean Journal of Zoology
1985 Volume.28 No. 2 p.85 ~ p.98
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Electron Microscopic Study on the Tritocerebrum of Butterfly (Pieris rapae Linne)
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Choi Wol-Bong
Jung Jin-Woong
Ahn E-Tay
Lee Bong-Hee
Seo Ji-Eun
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Abstract
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The present study was carried out light and electron microscopic analysis of the structures of the tritocerebral neurons in butterfly (Pieris rapae Linne) from Insecta. We have summarized our morphological analyses as follows: In insecta, tritocerebrum of butterfly shows tentatively classified 6 neuronal types without any arrangement of cell layers. Type I cells with long oval or spindle shape are the largest out of 6 kinds. The nucleus contains a small amount of chromatin. In the large volume of cytoplasm there contained rich cell organelles except granular endoplasmic reticulum. Type II cells are smaller than type I neurons, but their ultrastructural features are similar to type I neuron. They have well-developed granular endoplasmic reticulum. Type III cells are spherical or triangular and smaller than type I neuron with spherical nuclei. Cell organelles are mostly prominent, esp., mitochondria, ribosomes and fine fibrils which are arranged in periphery of the cytoplasm.
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