was investigated. Two different experiments were designed for the detection of pesticide
residues and its withdrawal period. In the first experiment, the accumulation of malathion for
10 days was measured in the hybrid fish, Squalius orientalis x Alburnus derjugini sampled
from a dam lake. In the next experiment, withdrawal was measured for 15 days. The infected
and healthy fish in groups exposed malathion and not exposed malathion were sampled at …