RT Journal Article
T1 Nocardiosis in Free-Ranging Cetaceans from the Central-Eastern Atlantic Ocean and Contiguous Mediterranean Sea
A1 Díaz Santana, Pablo
A1 Fernández, Antonio
A1 Díaz Delgado, Josue
A1 Vela Alonso, Ana Isabel
A1 Suárez Santana, Cristian
A1 Puig Lozano, Raquel
A1 Fernández Maldonado, Carolina
A1 Sierra, Eva
A1 Arbelo, Manuel
A1 Domínguez Rodríguez, Lucas José
AB We report the pathologic features of nocardiosis in five free-ranging delphinids from the Canary Islands and Andalusia, namely four striped dolphins (Stenella coerulealba) and one bottlenose dolphin (Tursiops truncatus). All animals had a multiorgan (disseminated) pattern of infection involving suppurative to pyogranulomatous and thromboembolic lesions in two or more organs. Most affected organs were (by decreasing order) lung, pulmonary lymph nodes, liver, kidney, adrenal glands, and central nervous system. Typical intralesional and intravascular branched and filamentous bacteria were highlighted by Grocott’s methenamine silver and Gram stains. Bacterial analysis including 16S rRNA gene sequencing identified Nocardia farcinica in two striped dolphins and Nocardia otitidiscaviarum in one striped dolphin and the bottlenose dolphin. All dolphins tested (n = 4) for cetacean morbillivirus were negative; one dolphin had concurrent cutaneous herpesvirosis. These results provide the first record of N. otitidiscaviarum in cetaceans, the first account of N. farcinica in free-ranging dolphins, and confirmation of nocardiosis in central eastern Atlantic Ocean. These results expand the known geographic range of nocardiosis in cetaceans.
PB MPDI
SN 2076-2615
YR 2022
FD 2022-02-11
LK https://hdl.handle.net/20.500.14352/73225
UL https://hdl.handle.net/20.500.14352/73225
LA eng
NO University of Las Palmas de Gran Canaria
NO National Project
DS Docta Complutense
RD 7 abr 2025