養殖魚の栄養性ミオパチ-症候群に関する研究-5-変敗蚕蛹投与によるコイの背こけ症状

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A long-period administration of rancid pupae of the silk-worm caused the carp (Cyprinus carpio) sekokeosis (sekoke means in Japanese extensive atrophy of the back). The carp displayed extensive thinness of the back after feeding for a seven month period and underwent a moribund condition accompanying the thin body after twelve months. Diseased fish histopathologically exhibited myopathy of the systemic skeletal musculature, ceroid and hemosiderin deposition and chronic nephritis which was extensive especially in moribund cases The myopathy was characterized by various kinds of alterations of muscle fibers and in the moribund cases, most of the muscle fibers were lost, accompanying a compensative production of fibrous tissue. Ceroid and hemosiderin were deposited within macrophages accumulating in the altered musculature, the spleen, the renal hematopoietic tissue and around pancreatic acini.The deposition became more extensive in the moribund cases. Chronic nephritis was characterized by glomerulitis, nephroses and productions of connective and adipose tissues accompanying loss of the hematopoietic tissue. But extensive alterations were not observed in Langerhans' islets, the nervous system and blood vessels. Based on histopathological findings, the sekokeosis was represented by the systemic myopathy due to nutritional deficiency and toxicant affection.
三重大学水産学部の論文