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KMID : 0364219840270030165
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Korean Journal of Zoology
1984 Volume.27 No. 3 p.165 ~ p.176
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Electron Microscopic Study of the Cutaneous Erythrophore Differentiation in Bombina orientalis
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Moon Myung-Jin
Kim Woo-Kab
Kim Chang-Hwan
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Abstract
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The cutaneous erythrophore differentiation from larvae to adult in bombina orientalis-the Korean fire bellied toad-is discussed electron microscopically to reveal the structural changes of carotenoid vesicles and pterinosomes in the process of erythrophore differentiation. Typical structure of adult erythrophores distributed beneath the basement membrane is composed much carotenoid vesicles and a small quantity of pterinosomes. Marginal electron density of these carotenoid vesicles is higher than those of internal regions and pterinosomes have many concentric lamellae. The very first differentiated erythrophores are apeared before and after the foreleg developing stage of metamorphosis and red ventral color is just appeared about $1\\sim2$ weeks after metamorphosis. About 1 year after metamorphosis, external body color of the young toad is similar to adult but the morphology of pigment granules observed in these erythrophores differs from that of adult in structure and electron density. At this stage, the differentiated level of pterinosomes is not remarkable and the accumulation state of carotenoid pigments in erythrophores is also relatively low.
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