[Problems of the genetics of stress. III. The differential effect of stress on the fertility of mice of differing genotypes].
Pre- and post-implantation embryonic mortality and the litter size in intact females and in females stressed during pregnancy were studied. These mice were the progeny of full diallele cross of 4 inbred strains (BALB/c, C3H/He, C57BL/6 and AKR/J). No genetic effects of pre-implantation losses were observed in the control group, but in the stressed group significant genetic effects (both additive and non-additive) on this character were found. Females originating from the most emotionally reactive strain (BALB/c) had a greater value of pre-implantation losses than the other animals, while the progeny of the least emotionally reactive strain (C57BL/6) had a smaller one. The litter size in the latter females was larger than in the former, in spite of the fact that the number of ovulation in RALB/c progeny was higher than that in C57BL/6 progeny. Thus, differential effect of stress on fitness was demonstrated in these experiments.
D000818:Animals; D001724:Birth Weight; D002908:Chronic Disease; D003433:Crosses, Genetic; D020964:Embryo Loss; D047108:Embryonic Development; D005260:Female; D005298:Fertility; D005838:Genotype; D051379:Mice; D008806:Mice, Inbred AKR; D008807:Mice, Inbred BALB C; D008809:Mice, Inbred C3H; D008810:Mice, Inbred C57BL; D008815:Mice, Inbred Strains / Q000235:genetics*; D011247:Pregnancy; D013312:Stress, Physiological / Q000235:genetics*
Problemy genetiki stressa. Soobshchenie III. Differentsial'noe vliianie stressa na plodovitost' mysheĭ raznykh genotipov.