Full text is available at the source.
LIFE HISTORY VARIATION IN AN ARTIFICIALLY SELECTED POPULATION OF DROSOPHILA MELANOGASTER: PLEIOTROPY, SUPERFLIES, AND AGE-SPECIFIC ADAPTATION
Life history differences in fruit flies bred for specific traits: multiple effects, exceptional individuals, and age-related adaptation
AI simplified
Abstract
Age at peak oviposition in Drosophila melanogaster has a heritability of 0.55.
- Three categories of peak oviposition were identified: early, midlife, and bimodal.
- Genetic correlations between lifespan and early fecundity are not significantly different from zero.
- Positive and statistically significant correlations exist between lifespan and midlife fecundity.
- Long-lived genotypes show a peak in fecundity during midlife.
- No evidence was found for a shift in reproductive effort from early to later stages.
- The presence of recombinant phenotypes suggests that life history evolution in Drosophila may not primarily be influenced by negative pleiotropy.
AI simplified