Pathogenicity of Vibrio splendidus biovar II, the causative bacterium of bacillary necrosis of Japanese oyster larvae
魚病研究 33 巻 2 号
79-84 頁
1998-06 発行
アクセス数 : 813 件
ダウンロード数 : 189 件
今月のアクセス数 : 1 件
今月のダウンロード数 : 1 件
この文献の参照には次のURLをご利用ください : https://ir.lib.hiroshima-u.ac.jp/00025895
ファイル情報(添付) | |
タイトル ( eng ) |
Pathogenicity of Vibrio splendidus biovar II, the causative bacterium of bacillary necrosis of Japanese oyster larvae
|
作成者 |
Sugumart Gopalrajan
Hirata Yasushi
Matsubara Danji
Muroga Kiyokuni
|
収録物名 |
魚病研究
Fish Pathology
|
巻 | 33 |
号 | 2 |
開始ページ | 79 |
終了ページ | 84 |
抄録 |
The potential pathogenicity of strains of Vibrio splendidus biovar II, which were isolated from bacillary necrosis of triploid larvae of Pacific oyster Crassostrea gigas in a hatchery in western Japan, was investigated. The course of experimental infection with virulent strains of V. splendidus biovar II was very rapid in 5-day-old veliger larvae with disease signs apparent within 6 to 12 h after exposure of larvae at doses of 10^4 to 10^6 CFU/ml, and mortalities up to 100% were recorded in 24 h at 10^5 and 10^6 CFU/ml. Although all the tested stages of larvae were experimentally infected by virulent strains of V. splendidus biovar II, a later stage (17 days post-hatching) was less susceptible than the earlier stages of development. Diploid and triploid larvae were almost equally susceptible to this pathogen. Extracellular products and intracellular components of the strains were lethal to larvae, but their lethality did not correlate with the virulence of live cultures. These results suggest that the ability to elaborate toxins is not the only virulence factor in the pathogenicity of V. splendidus biovar II. The ability of this pathogen to bring about significant mortalities in oyster larvae at densities of 10^4 CFU/ml and its long survival in seawater make this pathogen a potential threat to larval oyster productions in hatchery systems.
|
著者キーワード |
bacillary necrosis
vibriosis
Crassostrea gigas
veliger
Vibrio splendidus
pathogenicity
toxicity
|
NDC分類 |
水産業 [ 660 ]
|
言語 |
英語
|
資源タイプ | 学術雑誌論文 |
出版者 |
日本魚病学会
|
発行日 | 1998-06 |
出版タイプ | Version of Record(出版社版。早期公開を含む) |
アクセス権 | オープンアクセス |
収録物識別子 |
[ISSN] 0388-788X
[NCID] AN00063165
|