Etiological Studies on Bacterial Pseudotuberculosis in Cultured Yellowtail with Pasteurella piscicida as the Causative Agent—II

1 January 1978

journal article
Published by The Japanese Society of Fish Pathology in Fish Pathology

Vol. 13 (2) , 79-83
https://doi.org/10.3147/jsfp.13.79

Abstract

The serological relationship between of causative organism of bacterial pseudotuberculosis in yellowtail, Seriola quinqueradiata, and Pasteurella piscicida J_ANSSEN and S_URGALLA (1968) was investigated by Ouchterlony method and immunoelectrophoresis. Since the organisms isolated from cultured yellowtail in various places in Japan showed the similar immunodiffusion pattern, they were concluded to be the same serotype. The organism posesses one heat stable and four heat labile antigens in whole packed cells and three heat labile extracellular antigens. The immunodiffusion pattern of the organisms coincided with that of P. piscicida. Therefore it will support authors' previous result that the organism was identified as P. piscicida with the biological and biochemical characteristics. There was no taxonomical analogue strain investigated that cross-reacted with the causative organism except the strain Pasteurella plecoglosacida strain TA-IIK. TA-IIK isolated from ayu, Plecoglossus altivelis, produced one common precipitin line and spur.

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