Life Span Differences between Haploid and Diploid Males of Habrobracon serinopae after Exposure as Adults to X Rays

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Abstract
Newly emerged males were obtained from two separate wild type cultures one containing haploid males, from unmated females; the other containing both haploid males and diploid males, from mated females. The irradiated groups were exposed to 60 kr, a dose that decreased adult life span. The adults were kept in plastic vials, five per vial, at 30[degree]C and fed daily with a honey-water mixture and the life span of the population was determined. Non-irradiated haploid and diploid males have essentially the same life span but irradiated diploid males live longer than comparable haploid males. This indicates the primary processes involved in normal aging are different from those involved in decreased life span from X-irradiation and that the decrease in life span following X-irradiation is due to injury to the nuclear material.