種々の魚の白色筋と血合筋の組織学的研究〔英文〕

概要

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A histological study was made on dark and white muscles of four freshwater fishes and foursaltwater fishes. In myofibrils, difference of cross sectional patterns was found between dark and white muscles of 8 fish species. Mitochondria in dazk muscles were observed not only around myofibrils but also in myofibrils, whereas they were located around myofibrils in white muscles. All the species studied here, with the exception of white muscle in blackthroat seaperch, were found to have I-bands which are narrower than in mammalian muscles. On the contrary, the I-bands of white muscles in blackthroat seaperch were almost similar to the skeletal muscles of rabbit. In dark muscle of Japanese char, rainbow trout, horse mackerel and mackerel, lipid droplets were found in the interspaces of myofibrils and there were many mitochondria surrounding the droplets. The dazk muscles of Japanese char, rainbow trout and blackthroat seaperch appeared struc-totally very similar to one another. These dark muscles were much smaller in size and less darker in color as compared with the dark muscles of other fishes studied here.
日本水産學會の論文