Dahlgaard, J. and Hoffmann, A.A. (2000) Stress Resistance and Environmental Dependency of Inbreeding Depression in Drosophila melanogaster. Conservation Biology, 14 (4). pp. 1187-1192.
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Abstract
Both inbreeding and environmental stress can have adverse effects on fitness that affect the conservation of endangered species. Two important issues are whether stress and inbreeding effects are independent as opposed to synergistic, and whether inbreeding effects are general across stresses as opposed to stress-specific. We found that inbreeding reduced resistance to acetone and desiccation in adult Drosophila melanogaster, whereas resistance to knockdown heat stress was not affected. Inbred flies, however, experienced a greater proportional decrease in productivity than outbreds following heat stress. Correlations using line means indicated that all resistance traits were uncorrelated in the inbred as well as in the outbred flies. Recessive, deleterious alleles therefore did not appear to have any general deleterious effects on stress resistance. Inbreeding within a specific environment and selection for resistant genotypes may therefore purge a population of deleterious genes specific to only one environmental stress
| Item Type: | Article |
|---|---|
| Author Affiliation: | Department of Genetics and Evolution, La Trobe University, Bundoora 3083, Australia |
| Subjects: | Environmental Science |
| Divisions: | Other Crops |
| Depositing User: | Syamala |
| Date Deposited: | 07 Oct 2011 10:41 |
| Last Modified: | 07 Oct 2011 10:41 |
| Official URL: | http://onlinelibrary.wiley.com/doi/10.1046/j.1523-... |
| URI: | http://eprints.icrisat.ac.in/id/eprint/2715 |
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