Abstract
Specimens of the “ ginbuna ” Carassius auratus langsdorfi collected at various localities of Japan were analyzed by the myogen and erythrocytic size methods in which the electropherogram of muscle myogen and the average major axis of erythrocyte are used as a marker for determining of polyploidy of this fish. The results of simultaneous determination by both methods were tolerably coincident: Among 105 specimens examined, 25 and 80 were determined as diploids and polyploids, respectively, by the myogen method, while 32, 68 and 5 specimens were determined as diploids, triploids, and tetraploids, respectively, by the erythrocytic size method. The present results, together with other results so far obtained, strongly indicate that polyploid “ ginbuna ” is fairly widely distributed in Japan.
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