Effect of Fast Neutrons on Different Stages of Spermiogenesis in Drosophila melanogaster

FROM X-ray studies, it is known that the rates of chromosome aberrations vary with the age of the males 1 and the time from irradiation to insemination 2 . Lüning 3 showed that these variations were due to differences in the rates of chromosome breaks in different stages of Spermiogenesis and that i...

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Bibliographic Details
Published in:Nature (London) 1956-11, Vol.178 (4542), p.1123-1124
Main Authors: LÜNING, K. G, JONSSON, STEN
Format: Article
Language:English
Subjects:
Animals
Drosophila melanogaster
Fast Neutrons
Humanities and Social Sciences
letter
Male
multidisciplinary
Neutrons
Old Medline
Science
Science (multidisciplinary)
Spermatogenesis
Spermatozoa - radiation effects
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Summary:FROM X-ray studies, it is known that the rates of chromosome aberrations vary with the age of the males 1 and the time from irradiation to insemination 2 . Lüning 3 showed that these variations were due to differences in the rates of chromosome breaks in different stages of Spermiogenesis and that in spermatids there was a higher rate than in mature spermatozoa. After Baker and Von Halle's 4 observation that there was a difference in the rate of dominant lethals in sperm between the first and second day, this was further studied by Lüning 5 on other types of aberrations. He proposed that this difference was due to a difference in the rate of breaks in ‘mature’ (the first-day) and ‘near mature’ (the second-day) sperm. This conclusion ought, however, to be revised as some yet unpublished experiments have shown.
ISSN:0028-0836
1476-4687
DOI:10.1038/1781123b0