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Selection for increased abdominal bristle number in Drosophila melanogaster with concurrent irradiation

II. Populations derived from an outbred cage population

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Summary

Replicate lines, each initially with one hundred pairs of parents selected at 50% intensity, were derived from the Canberra strain. In later generations population size was reduced and selection intensity increased. Three lines were selected without irradiation and five with 1000 r X-rays per generation for thirty generations. Selection was continued until generation 66. Long-term responses were similar in unirradiated and irradiated lines, and there was evidence that genes with large effects influenced response patterns in both groups of lines.

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Author notes

  1. B. Hollingdale

    Present address: Agricultural Research Institute, 2650, Wagga, Wagga, Australia

Authors and Affiliations

  1. Department of Animal Husbandry, University of Sydney, Sydney, Australia

    B. Hollingdale & J. S. F. Barker

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Additional information

Communicated by J. S. F. Barker

This work was carried out while B.H. was on leave from the New South Wales Department of Agriculture, and held a Commonwealth Research Studentship. Robin Hall and Tricia Brown provided much appreciated technical assistance, and we are indebted to the Radio-Therapy Unit, Royal Prince Alfred Hospital, for the use of their equipment.

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Hollingdale, B., Barker, J.S.F. Selection for increased abdominal bristle number in Drosophila melanogaster with concurrent irradiation. Theoret. Appl. Genetics 41, 263–274 (1971). https://doi.org/10.1007/BF00277796

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