Females of the American mink Mustela vison Schreber, 1777 were fed on
various fractions of commercial PCB. Developmental stability of their
progeny was studied. Developmental stability was measured by the value
of fluctuating asymmetry, and the frequency of phenodeviants of osteo
logical and dermatoglyphic characters. All these measures proved to be
significantly higher in the experimental intoxicated groups than in t
he control group, thus indicating deterioration of developmental stabi
lity from PCB.