Recovery of Hafnia alvei from diseased brown trout, Salmo trutta L., and healthy noble crayfish, Astacus astacus (L.), in Bulgaria

Citation

Orozova P, Sirakov I, Chikova V, Popova R, Al-Harbi AH, Crumlish M & Austin B (2014) Recovery of Hafnia alvei from diseased brown trout, Salmo trutta L., and healthy noble crayfish, Astacus astacus (L.), in Bulgaria. Journal of Fish Diseases, 37 (10), pp. 891-898. https://doi.org/10.1111/jfd.12212

Abstract
Hafnia alvei was isolated in Bulgaria from healthy noble crayfish, Astacus astacus (L.), and then from farmed diseased brown trout, Salmo trutta L., with signs of haemorrhagic septicaemia. The isolates were identified initially with conventional phenotyping and commercial Merlin Micronaut and API 20E rapid identification systems, followed by sequencing of the 16S rRNA gene. Hafnia alvei Bt1, Bt2 and Aa4 were of low virulence to rainbow trout and brown trout, although cytotoxicity was demonstrated by Bt1 and Bt2, but not by Aa4.

Keywords
brown trout Salmo trutta L.;fish disease;Hafnia alvei ;virulence

Journal
Journal of Fish Diseases: Volume 37, Issue 10