Journal
JOURNAL OF FISH DISEASES
Volume 43, Issue 10, Pages 1201-1211Publisher
WILEY
DOI: 10.1111/jfd.13221
Keywords
Alsatian charr; brook trout; genetic lineage; rainbow trout; Tetracapsuloides bryosalmonae
Funding
- University of Veterinary and Pharmaceutical Sciences in Brno [219/2017/FVHE]
- European Regional Development Fund [CZ.02.1.01/0.0/0.0/16_019/0000869]
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Tetracapsuloides bryosalmonae(Myxozoa: Malacosporea) is the causative agent of proliferative kidney disease (PKD), which affects both wild and farmed salmonid fish. The objective of this study was to outline differences in susceptibility to PKD in different salmonid species, hybrids and breeding lineages. Susceptibility toT. bryosalmonaeinfection was established based on cumulative mortality, pathological findings and detection ofT. bryosalmonaein the kidney using immunohistochemistry and molecular methods. Determination of pure and hybrid individuals of different species in the genusSalvelinus, and dissimilarity of rainbow trout lineages, was performed using traditional polymerase chain reaction (PCR) and microsatellite analyses. Rainbow trout displayed higher disease severity compared with brook trout and Alsatian charr. Moreover, the results indicated differences in infection susceptibility, not only among different salmonid species but also among different lineages of charr and rainbow trout. Our study indicated that some salmonid species and even different lineages of the same species are more suitable for farming under PKD pressure.
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