Outbreaks of severe myositis in cultured white sturgeon (Acipenser transmontanus L.) associated with Streptococcus iniae

Outbreaks of severe myositis in cultured white sturgeon (Acipenser transmontanus L.) associated with Streptococcus iniae

© 2020 John Wiley & Sons Ltd.

Détails bibliographiques
Publié dans:Journal of fish diseases. - 1998. - 43(2020), 4 vom: 01. Apr., Seite 485-490
Auteur principal: Pierezan, Felipe (Auteur)
Autres auteurs: Shahin, Khalid, Heckman, Taylor I, Ang, June, Byrne, Barbara A, Soto, Esteban
Format: Article en ligne
Langue:English
Publié: 2020
Accès à la collection:Journal of fish diseases
Sujets:Journal Article Streptococcus iniae bacteraemia myositis white sturgeon
Description
Résumé:© 2020 John Wiley & Sons Ltd.
Outbreaks of an infectious disease affecting cultured white sturgeon (Acipenser transmontanus) were investigated. Clinical signs included erratic swimming, arching of the back and mortality. Necropsy findings included poorly demarcated yellow to dark-red and friable lesions in the epaxial muscle, ulcerative skin lesions and haemorrhages in the swim bladder and coelomic wall. Histological evaluation revealed areas of necrotizing and heterophilic myositis with aggregates of bacterial cocci. The lumen of blood vessels in the dermis, under ulcerated areas, and in the posterior kidney, was occluded by fibrin thrombi. Aggregates of Gram-positive cocci were observed in the muscle lesions and within the fibrin thrombi in the dermis and kidney. Genetically homogeneous Streptococcus iniae strains were recovered from affected fish from different outbreaks. The isolates shared high degree of similarity at gene locus (gyrB) with previously characterized S. iniae from cultured fish in California, confirming the emergence of this particular strain of S. iniae in US aquaculture
Description:Date Completed 11.09.2020
Date Revised 30.09.2020
published: Print-Electronic
GENBANK: MN194170, MN194176, MN178309, MN178315, KY321300.1, KY321296.1, KY321297.1, KY321299.1, KY321294.1, KY321295.1, KY321292.1, KY321293.1, KY321298.1, KY321301.1, KY321302.1, KY321303.1, CP024843.1, CP022392.1, CP003810.1, (AP018726.1)
Citation Status MEDLINE
ISSN:1365-2761
DOI:10.1111/jfd.13145