Another set of responses and correlated responses to selection on age at reproduction in Drosophila melanogaster.

摘要: Ageing is the decline in survival probability and fertility later adult life. It can evolve through mutation accumulation pleiotropy. Artificial selection by age at reproduction a useful method for detecting effects of pleiotropy, producing lines that differ their rate ageing further analysis. However, approach has encountered difficulties from gene-environment interaction inadvertent selection. We have produced new set Drosophila melanogaster, breeding either 'young' or 'old' adults, avoiding some present previous studies. Breeding older adults resulted an evolutionary increase but, contrary to all studies using this method, no late-life fertility. The was accompanied early life, confirming importance pleiotropy evolution ageing. Contrary studies, there were correlated responses pre-adult period; development time, larval competitive ability size achieved did not between two regimes.