Individual and group selection for productivity in Tribolium castaneum.
The usefulness of a non-random group selection method in the improvement of a character influenced by interactions among individuals has been experimentally tested in a population of Tribolium castaneum. The selected trait -number of adults produced in a fixed period of time -showed a clear increase after 11 generations of selection. This increase is related to a reduction in developmental time, and it was specific for the population structure in which selection was applied, vanishing when this structure was altered.
Departamento de Xenética, Facultade de Bioloxia, Universidade de Santiago de Compostela, La Coruña, Spain.
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Garcia
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Toro