The effect of light regimen on settlement patterns of sea lice, Lepeophtheirus salmonis, on Atlantic salmon, Salmo salar, post-smolts while taking into account fish size and fin erosion in a static tank system

There is a need to assess light effect on lice settlement in controlled conditions due to conflicting results. We analyzed lice settlement while taking into account preexisting fin erosion and fish size. Findings confirm that light is not a requirement for lice infestation. Fin erosion influenced the number of lice on paired fins suggesting the importance of considering fin erosion as a potential biophysical parameter.