Proliferative kidney disease in brown trout Salmo trutta: further evidence of a myxosporean aetiology
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چکیده
Two groups of brown trout Salmo trutta L. were studied, one after natural exposure to PKD-infected waters, the other after laboratory challenge by intraperitoneal inoculation with PKDinfected kidney tissue from rainbow trout Salmo gairdneri Richardson. Subclinical PKD developed in both groups; renal intraluminal myxosporean organisms were observed in both groups. The implications of these findings are discussed in relation to the aetiology of PKD.
منابع مشابه
Differential modulation of host genes in the kidney of brown trout Salmo trutta during sporogenesis of Tetracapsuloides bryosalmonae (Myxozoa)
Tetracapsuloides bryosalmonae (Myxozoa) is the causative agent of proliferative kidney disease in various species of salmonids in Europe and North America. In Europe, spores of T. bryosalmonae develop in the kidney of infected brown trout Salmo trutta and are released via urine to infect the freshwater bryozoan Fredericella sultana. The transcriptomes of kidneys of infected and non-infected bro...
متن کاملProliferative kidney disease in brown trout: infection level, pathology and mortality under field conditions.
Proliferative kidney disease (PKD) is an emerging disease threatening wild salmonid populations. In temperature-controlled aquaria, PKD can cause mortality rates of up to 85% in rainbow trout. So far, no data about PKD-related mortality in wild brown trout Salmo trutta fario are available. The aim of this study was to investigate mortality rates and pathology in brown trout kept in a cage withi...
متن کاملMorphology and disease in trout exposed to pollution Morphological organ alterations and infectious diseases in brown trout Salmo trutta and rainbow trout Oncorhynchus mykiss exposed to polluted river water
Poor water quality is discussed as a major factor causing a decline of brown trout populations in Swiss rivers. For our study we have chosen a river in the Swiss midlands, where the brown trout population has decreased dramatically during the last 10 yr and where feral fish have shown distinctive pathological alterations. The objective of our study was to investigate whether river water may be ...
متن کاملGenetic variation in Scandinavian brown trout (Salmo trutta L.): evidence of distinct sympatric populations.
Genetic variation in Scandinavian brown trout (Salmo trutta L.): evidence of distinct sympatric populations" (1976). Biological Sciences Faculty Publications. 347.
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