Projects per year
Abstract / Description of output
Malaria transmission is achieved by sexual stages, called gametocytes, and the proportion of gametocytes that are male versus female (sex ratio) influences transmission success. In malaria model systems, variation in gametocyte sex ratios can be explained by the predictions of evolutionary sex allocation theory. We test these predictions using natural Plasmodium falciparum infections. The predicted negative correlation between sex ratio and gametocyte density holds: sex ratio increases when gametocyte densities decrease, and this is most apparent in single genotype infections and in the dry season. We do not observe higher gametocyte sex ratios in mixed compared to single genotype infections.
Keywords / Materials (for Non-textual outputs)
- Fertility insurance
- local mate competition
- sex allocation
- gametocyte density
- seasonal malaria transmission
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- 5 Finished
1/11/16 → 30/09/23
30/04/13 → 29/10/17
1/01/13 → 13/03/19
Data from: Evolutionary sex allocation theory explains sex ratios in natural Plasmodium falciparum infections.