Pérez Lola, Abarca M Lourdes, Latif-Eugenín Fadua, Beaz-Hidalgo Roxana, Figueras M José, Domingo Mariano
Departament de Sanitat i Anatomia Animals, Veterinary Mycology Group, and Servei de Diagnòstic de Patologia Veterinària, Facultat de Veterinària, Universitat Autònoma de Barcelona, 08193 Bellaterra, Barcelona, Spain.
Dis Aquat Organ. 2015 Sep 17;116(1):69-74. doi: 10.3354/dao02899.
A neonate Risso's dolphin Grampus griseus was found stranded alive on a beach in Catalonia, Spain. Rehabilitation attempts were unsuccessful and it died 2 d later, showing pneumonia and sepsis. A pure bacterial culture was obtained from all tissues and blood and identified as Aeromonas hydrophila using the API 20NE. However, sequencing the rpoD gene showed that the strain in fact belongs to A. dhakensis, making this the first report of fatal haemorrhagic-necrotizing pneumonia and sepsis due to this species in a marine mammal. The A. dhakensis strain GMV-704 produced β-haemolysis, possessed several virulence genes and showed sensitivity to several antimicrobials. This study provides a new potential host for A. dhakensis, and its potential virulence in dolphins and its presence in the marine environment may warrant considering this species a potential threat to marine mammals.
一只新生里氏海豚（糙齿海豚）被发现搁浅在西班牙加泰罗尼亚的海滩上，当时它还活着。对其进行的康复尝试未成功，它在两天后死亡，出现了肺炎和败血症。从所有组织和血液中获得了纯细菌培养物，并使用API 20NE鉴定为嗜水气单胞菌。然而，对rpoD基因进行测序表明，该菌株实际上属于达卡气单胞菌，这使得这成为该物种在海洋哺乳动物中导致致命出血性坏死性肺炎和败血症的首例报告。达卡气单胞菌菌株GMV - 704产生β溶血，拥有多个毒力基因，并对几种抗菌药物敏感。本研究为达卡气单胞菌提供了一个新的潜在宿主，其在海豚中的潜在毒力及其在海洋环境中的存在可能值得将该物种视为对海洋哺乳动物的潜在威胁。
