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13. FIRST ISOLATION OFTENACIBACULUM MARITIMUMIN A CAPTIVE SAND TIGER SHARK (CARCHARIAS TAURUS)

Author

Daniela Florio, Renato Giulio Zanoni, Marialetizia Fioravanti, Stefano Gridelli, Florio, Daniela, Gridelli, Stefano, Fioravanti, Maria Letizia, and Zanoni, Renato Giulio

Subjects
0301 basic medicine, Zoology, Public aquarium, Skin lesion, Fish Diseases, 03 medical and health sciences, Flavobacteriaceae Infections, Enrofloxacin, medicine, Animals, General Veterinary, biology, Medicine (all), 04 agricultural and veterinary sciences, General Medicine, Anatomy, Sand tiger shark, biology.organism_classification, Isolation (microbiology), Anti-Bacterial Agents, Dorsal fin, Carcharias, Tenacibaculum, 030104 developmental biology, Sharks, 040102 fisheries, Veterinary (all), 0401 agriculture, forestry, and fisheries, Tenacibaculum maritimum, Animals, Zoo, Female, Animal Science and Zoology, Carcharias tauru, Fluoroquinolones, medicine.drug
Abstract

This report describes a case of the first isolation of Tenacibaculum maritimum from a captive-bred adult female sand tiger shark (Carcharias taurus) housed at the Cattolica Aquarium (Italy). The animal showed, between the second dorsal fin and the precaudal pit, skin lesions characterized by the presence of abundant whitish necrotic tissue. Through routine bacteriological examination, a bacterium was isolated from a skin lesion and subsequently identified as T. maritimum by phenotypic characters and species-specific polymerase chain reaction. The antimicrobial sensitivity of the isolated strain was evaluated for 11 antimicrobial agents by disk diffusion method. Antibiotic therapy was conducted with enrofloxacin at 10 mg kg(-1) i.m. on alternate days for 10 days. One month after the end of treatment skin lesions showed complete resolution and the shark recovered completely. The case presented here represents the first report of infection by T. maritimum in a sand tiger shark and highlights the potential pathogenic role of this microorganism in elasmobranchs kept in an aquarium.

Published
2016

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