Lethal dose and clinical signs of Aeromonas hydrophila in Arapaima gigas (Arapaimidae), the giant fish from Amazon
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- 作者：Marcia K.R. Diasa ; Luciana S. Sampaiob ; Aldo A. Proietti-Juniorb ; Eliane T.O. Yoshiokaa ; c ; Dá ; lia P. Rodriguesd ; Anselmo F.R. Rodrigueze ; Ricardo A. Ribeiroe ; Fernando S.E.D.V. Fariae ; Rodrigo O.A. Ozó ; riof ; g ; Marcos Tavares-Diasa ; c ; marcos.tavares@embrapa.br" class="auth_mail" title="E-mail the corresponding author
- 关键词：Aeromonas hydrophila ; Bacteria ; Infection ; Tolerance limit ; Pirarucu
- 刊名：Veterinary Microbiology
- 出版年：2016
- 出版时间：30 May 2016
- 年：2016
- 卷：188
- 期：Complete
- 页码：12-15
- 全文大小：757 K
文摘
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Tolerance limit (LD) of Aeromonas hydrophila for Arapaima gigas was determined.
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For A. gigas, the LD50-96h was of 1.8 × 108 CFU/mL.
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The intradermal inoculation of 1.8 × 108 CFU/mL A. hydrophila caused 91.6% of mortality in fish and several clinical signs.
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Fish had erratic movement, body abnormal coloration, hemorrhagic foci and abrasion of dorsal fin.
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Fish had depigmentation in the tegument, body lesions, loss of balance, reduction of respiratory movements, hemorrhagic foci and necrotic hemorrhages.