Med norsk forord og sammendrag.In laboratory experiments cod was presented a choice situation
between different concentrations of petroleum hydrocarbons, appearing
as "water soluble fraction" and emulsified droplets derived
from Fuel Oil No. 2. In most experiments, the fishes seemed to
avoid water containing hydrocarbons, though some fishes for periods
was indifferent also to considerable contaminated water. The
over all results indicates that a majority of the fishes avoided
water containing total hydrocarbons down to 50-100 ug/l sea water.
At still lower concentrations, the behavioural response most often
seemed indifferent
