Table 2 Analyses of the effect of different variables on S. parasitica load.
From: Tracing the oomycete pathogen Saprolegnia parasitica in aquaculture and the environment
eDNA sample type for which the S. parasitica load was determined | Variable | Number of analysed samples per variable | Statistical analysis | |
|---|---|---|---|---|
Microbial community from water | Physico-chemical properties of water samples | Values for the following parameters: pH, EC, NH4+, NO3−, SO42−, F−, Cl−, Na+, K+, Mg2+, Ca2+, TOC, TP and COD | 21 sites | Partial least squares regression (PLS-R) |
Biofilm of trout eggs | Health status | S. parasitica infected or healthy | 15 in total 5 laboratory infected 5 healthy infection trial neg. controls 5 healthy from the hatchery | Mann–Whitney U test |
Biofilm of adult trout skin collected at the fish farms | Health status | Injured or healthy | 30 in total 17 injured 13 healthy | Mann–Whitney U test |
