DAO 116:69-74 (2015)  -  DOI: https://doi.org/10.3354/dao02899

Aeromonas dhakensis pneumonia and sepsis in a neonate Risso’s dolphin Grampus griseus from the Mediterranean Sea

Lola Pérez1, M. Lourdes Abarca1,2, Fadua Latif-Eugenín3, Roxana Beaz-Hidalgo3, M. José Figueras3,*, Mariano Domingo1,4,5 

1Departament de Sanitat i Anatomia Animals, 2Veterinary Mycology Group, and 4Servei de Diagnòstic de Patologia Veterinària, Facultat de Veterinària, Universitat Autònoma de Barcelona, 08193 Bellaterra, Barcelona, Spain
3Unitat de Microbiologia, Departament de Ciènces Médiques Bàsiques, Facultat de Medicina i Ciències de la Salut, IISPV, Universitat Rovira i Virgili, Reus, Spain
5Centre de Recerca en Sanitat Animal (CReSA), IRTA, Campus de la Universitat Autònoma de Barcelona, 08193 Bellaterra, Barcelona, Spain
*Corresponding author:

ABSTRACT: 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.


KEY WORDS: Aeromonas dhakensis · rpoD · Virulence · Pneumonia · Sepsis · Dolphin · Grampus griseus


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Cite this article as: Pérez L, Abarca ML, Latif-Eugenín F, Beaz-Hidalgo R, Figueras MJ, Domingo M (2015) Aeromonas dhakensis pneumonia and sepsis in a neonate Risso’s dolphin Grampus griseus from the Mediterranean Sea. Dis Aquat Org 116:69-74. https://doi.org/10.3354/dao02899

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