Studies on the Characters of Staphylococcus epidermidis Isolated from Diseased Fishes-I

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  • 各種病魚から分離されたＳｔａｐｈｙｌｏｃｏｃｃｕｓ　ｅｐｉｄｅｒｍｉｄｉｓの性状に関する研究　Ｉ　　分離菌の形態学的，生物学的ならびに生化学的性状について
  • カクシュ ビョウギョ カラ ブンリサレタ Staphylococcus epi
  • 分離菌の形態学的,生物学的ならびに生化学的性状について

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Description

During the period from July 1976 through September 1977, epizootics occurred among cultured yellowtail, Seriola quinqueradiata, and red sea bream, Chrysophrys major, in Kochi and Kagawa Prefecture. The typical symptoms of this disease were exophthalmos and occasionally congestion and swallen lesion on the caudal peduncle. Organisms could be isolated from diseased fishes.<BR>In the present paper, morphological, biological and biochemical characteristics of six organisms isolated from diseased yellowtail and red sea bream were examined and these organisms were classified by BAIRD-PARKER'S biochemical subgrouping scheme. The organisms were gram-positive, non-motile, spherical cells of about 0.6-1.8 μm in diameter occurring singly, in pairs and irregular clusters. Catalase production and glucose fermentation were positive, oxidase and coagulase production were negative, and all organisms except one showed negative reactions in mannitol fermentation.<BR>On the basis of these characters, the organisms were identified as Staphylococcus epidermidis; moreover, three organisms isolated from yellowtail were classified as BAIRD-PARKER'S (B-P) Staphylococcus subgroup II, V and VI, and three others from red sea bream were classified as B-P Staphylococcus subgroup II.

Journal

  • Fish Pathology

    Fish Pathology 16 (1), 15-24, 1981

    The Japanese Society of Fish Pathology

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