Geographic distribution of Tetracapsuloides bryosalmonae infected fish in Swiss rivers: an update

0301 basic medicine 0303 health sciences 03 medical and health sciences 14. Life underwater
DOI: 10.1007/s00027-006-0843-4 Publication Date: 2007-02-28T09:51:08Z
ABSTRACT
Proliferative kidney disease (PKD) has been recognized as a potential threat to brown trout (Salmo trutta) populations in Switzerland. A study performed in 2000/2001 on 139 sampling sites from 127 rivers in Switzerland revealed a wide distribution of fish infected by Tetracapsuloides bryosalmonae, the causative agent of PKD. The present study aimed to complement this dataset by studying a further 115 sample sites from 91 rivers and 4 fish farms. Mainly brown trout were investigated for the presence of T. bryosalmonae by a combination of macroscopical, histological and immunohistochemical examination. In approximately 56% of the examined sampling sites, T. bryosalmonae-infected fish were found. The prevalence of infected fish at individual sites ranged from 0% to 100%. Infection intensity, judged on the basis of histological and immunohistochemical evaluation for the degree of parasite infection, varied greatly between and within sites. PKD-positive sites were found in all areas of Switzerland. The wide distribution of the disease in Swiss rivers indicates that PKD may be a causative factor for the catch decline of brown trout, which was suggested over recent decades in Switzerland.
SUPPLEMENTAL MATERIAL
Coming soon ....
REFERENCES (0)
CITATIONS (48)
EXTERNAL LINKS
PlumX Metrics
RECOMMENDATIONS
FAIR ASSESSMENT
Coming soon ....
JUPYTER LAB
Coming soon ....