Hostname: page-component-7479d7b7d-fwgfc Total loading time: 0 Render date: 2024-07-09T13:00:46.130Z Has data issue: false hasContentIssue false

Optimum selection strategies: studies with Drosophila melanogaster

Published online by Cambridge University Press:  14 April 2009

Aurora García-Dorado
Affiliation:
Departamento de Genética, Facultad de Biologia, Universidad Complutense, 28040 Madrid, Spain
Carlos López-Fanjul
Affiliation:
Departamento de Genética, Facultad de Biologia, Universidad Complutense, 28040 Madrid, Spain

Summary

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

An experimental evaluation of Jódar & López-Fanjul's (1977) theoretical treatment of the optimum proportions to select when the numbers of males and females scored are unequal has been carried out for sternopleural bristle number in Drosophila melanogaster. Three different values of the sex-ratio (c) were considered (c = 1, 4 and 10) for the same total number of individuals scored per generation. For each c value two types of line were selected with proportions theoretically maximizing the response to be attained after 10 or 20 generations, respectively. Thus, there were six types of lines and each type was replicated sixfold. A good qualitative agreement was found between the observed and the expected rankings of the different types of selected lines at the designated generations.

Type
Short Paper
Copyright
Copyright © Cambridge University Press 1985

References

REFERENCES

Becker, W. A. (1975). Manual of Procedures in Quantitative Genetics, 3rd ed.Pullman: Washington State University Press.Google Scholar
Cockerham, C. C. & Burrows, P. M. (1980). Selection limits and strategies. Proceedings of the National Academy of Science, U.S.A. 77, 546549.CrossRefGoogle ScholarPubMed
Frankham, R. (1977). Optimum selection intensities in artificial selection programmes: an experimental evaluation. Genetical Research 30, 115119.CrossRefGoogle Scholar
Jódar, B. & López-Fanjul, C. (1977). Optimum proportions selected with unequal sex numbers. Theoretical and Applied Genetics 50, 5761.CrossRefGoogle ScholarPubMed
Jonckheere, A. R. (1954). A distribution-free k-sample test against ordered alternatives. Biometrika 41, 133145.CrossRefGoogle Scholar
Robertson, A. (1961). Inbreeding in artificial selection programmes. Genetical Research 2, 189194.CrossRefGoogle Scholar
Robertson, A. (1970). Some optimum problems in individual selection. Theoretical Population Biology 1, 120127.CrossRefGoogle ScholarPubMed
Ruano, R. G., Orozco, F. & López-Fanjul, C. (1975). The effect of different selection intensities on selection response in egg-laying of Tribolium castaneum. Genetical Research, 25, 1727.CrossRefGoogle Scholar