| Autor: |
D T, Smith, D J, Hosken, W G, Rostant, M, Yeo, R M, Griffin, A, Bretman, T A R, Price, R H, Ffrench-Constant, N, Wedell |
| Rok vydání: |
2011 |
| Předmět: |
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| Zdroj: |
Journal of evolutionary biology. 24(6) |
| ISSN: |
1420-9101 |
| Popis: |
In Drosophila melanogaster, the DDT resistance allele (DDT-R) is beneficial in the presence of DDT. Interestingly, DDT-R also elevates female fitness in the absence of DDT and existed in populations before DDT use. However, DDT-R did not spread regardless of DDT-independent selective advantages in females. We ask whether sexual antagonism could explain why DDT-R did not spread before pesticide use. We tested pre- and post-copulatory male fitness correlates in two genetic backgrounds into which we backcrossed the DDT-R allele. We found costs to DDT-R that depended on the genetic background in which DDT-R was found and documented strong epistasis between genetic background and DDT-R that influenced male size. Although it remains unclear whether DDT-R is generally sexually antagonistic, or whether the fitness costs noted would be sufficient to retard the spread of DDT-R in the absence of DDT, general fitness advantages to DDT-R in the absence of DDT may be unlikely. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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