Gonen, M., Ministry of Agriculture, Plant Protection Department, Stored Products Research Laboratory, Jaffa, Israel
Calderon, M., Ministry of Agriculture, Plant Protection Department, Stored Products Research Laboratory, Jaffa, Israel
Experiments were carried out to investigate the influence of gamma irradiation at doses of 20, 35 and 40 krad from a Co60 source on the progeny of adult males of Ephestia cautella (Wlk.). The findings showed a high mortality (90%) of immature stages of the F1 at all doses used, and an increase in the proportion of males among adults of the F1 with increasing radiation dose. A negative effect on the mating ability of offspring of irradiated males, which increased with rising doses to the male parents, was shown, but the frequency of mating of male offspring whose mating ability was not affected, rose. For male progeny of males irradiated at 35 krad a high frequency of transfer of empty spermatophores was noted (60 per cent of all cases) even though sperm was present in their testes. A detrimental effect was noted on the oviposition resulting from the mating of both sexes of the F1 with normal adults. This effect increased with increased doses. Irradiation of male parents at 35 krad induced complete sterility (apart from individual exceptions) of the progeny, whereas for males irradiated at 20 krad, the offspring could be grouped into different sterility levels ranging from complete sterility to normal fertility. © 1971.
פותח על ידי קלירמאש פתרונות בע"מ -
הספר "אוצר וולקני"
אודות
תנאי שימוש
Effects of gamma radiation on Ephestia cautella (Wlk.) (Lepidoptera, phycitidae) - II. Effects on the progeny of irradiated males
7
Gonen, M., Ministry of Agriculture, Plant Protection Department, Stored Products Research Laboratory, Jaffa, Israel
Calderon, M., Ministry of Agriculture, Plant Protection Department, Stored Products Research Laboratory, Jaffa, Israel
Effects of gamma radiation on Ephestia cautella (Wlk.) (Lepidoptera, phycitidae) - II. Effects on the progeny of irradiated males
Experiments were carried out to investigate the influence of gamma irradiation at doses of 20, 35 and 40 krad from a Co60 source on the progeny of adult males of Ephestia cautella (Wlk.). The findings showed a high mortality (90%) of immature stages of the F1 at all doses used, and an increase in the proportion of males among adults of the F1 with increasing radiation dose. A negative effect on the mating ability of offspring of irradiated males, which increased with rising doses to the male parents, was shown, but the frequency of mating of male offspring whose mating ability was not affected, rose. For male progeny of males irradiated at 35 krad a high frequency of transfer of empty spermatophores was noted (60 per cent of all cases) even though sperm was present in their testes. A detrimental effect was noted on the oviposition resulting from the mating of both sexes of the F1 with normal adults. This effect increased with increased doses. Irradiation of male parents at 35 krad induced complete sterility (apart from individual exceptions) of the progeny, whereas for males irradiated at 20 krad, the offspring could be grouped into different sterility levels ranging from complete sterility to normal fertility. © 1971.
Scientific Publication