title: Aeromonas dhakensis pneumonia and sepsis in a neonate Risso's dolphin Grampus griseus from the Mediterranean Sea.
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.
authors.affiliation: 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.
authors.forename: Lola
authors.initials: L
authors.lastname: Pérez
authors.forename: M Lourdes
authors.initials: ML
authors.lastname: Abarca
authors.forename: Fadua
authors.initials: F
authors.lastname: Latif-Eugenín
authors.forename: Roxana
authors.initials: R
authors.lastname: Beaz-Hidalgo
authors.forename: M José
authors.initials: MJ
authors.lastname: Figueras
authors.forename: Mariano
authors.initials: M
authors.lastname: Domingo
mesh_terms: D000333:Aeromonas / Q000145:classification / Q000235:genetics / Q000302:isolation & purification* / Q000472:pathogenicity; D000818:Animals; D000831:Animals, Newborn; D004289:Dolphins; D016905:Gram-Negative Bacterial Infections / Q000382:microbiology / Q000662:veterinary*; D008297:Male; D010802:Phylogeny; D018410:Pneumonia, Bacterial / Q000382:microbiology / Q000662:veterinary*; D018805:Sepsis / Q000382:microbiology / Q000662:veterinary*; D014774:Virulence