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Overcoming cytoplasmic incompatibility in Drosophila
1University of Chicago, Department of Organismal Biology and Anatomy, IL 60637, USA.
Proceedings. Biological Sciences
|April 2, 1998
Summary
Repeated mating by infected males reduces reproductive incompatibility caused by Wolbachia bacteria in Drosophila. This finding has implications for understanding Wolbachia transmission and biological pest control strategies.
Area of Science:
- Microbiology
- Genetics
- Evolutionary Biology
Background:
- Wolbachia pipientis is an endocellular microbe infecting many invertebrates.
- Wolbachia presence is linked to cytoplasmic incompatibility (CI), a reproductive failure.
- CI affects infected males' ability to sire offspring with uninfected females.
Purpose of the Study:
- To investigate mechanisms that abate CI.
- To determine the effect of repeated copulation on CI in Wolbachia-infected males.
Main Methods:
- Studied Drosophila simulans infected with Wolbachia.
- Observed the impact of repeated copulation by infected males on CI.
Main Results:
- Repeated copulation significantly diminishes CI in Wolbachia-infected Drosophila simulans males.
- Wolbachia still populated developing spermatids after repeated copulation.
- Reduced CI may be due to decreased expression time during spermatogenesis.
Conclusions:
- Repeated copulation restores fertility in premated infected males.
- Findings impact understanding of Wolbachia transmission and persistence.
- Results are relevant for biological pest control using Wolbachia.