Effects of gamma-irradiation on the infective larvae of Bunostomum trigonocephalum (Rud., 1808) in lambs.

Infective larvae of Bunostomum trigonocephalum exposed to gamma-irradiation at 60 kr failed to develop in the lamb. At levels of 20 and 40 kr, the infectivity of the larvae was reduced and fewer worms developed with a predominating female population. The worms developing from the irradiated larvae were smaller and the sex organs were ill developed. The females developing from larvae irradiated at 40 kr were functionally sterile with atrophied uterus devoid of eggs.