UNIDIRECTIONAL INCOMPATIBILITY BETWEEN POPULATIONS OF DROSOPHILA SIMULANS
- 1 July 1986
- Vol. 40 (4) , 692-701
- https://doi.org/10.1111/j.1558-5646.1986.tb00531.x
Abstract
Drosophila simulans females from a strain collected at Watsonville, CA produce very few offspring when mated with males from a strain collected at Riverside 510 km away. This incompatibility does not exist in the reciprocal cross. In the incompatible cross, mating and oviposition are normal, but eggs fail to hatch. A survey of other California populations indicates that unidirectional incompatibility is widespread. The incompatibility is maternally inherited over one generation. Using older Riverside males or rearing the strains at 28°C suppresses incompatibility. Culturing the strains on medium with tetracycline restores compatibility, suggesting the involvement of a microorganism.Keywords
Funding Information
- National Institutes of Health (GM22221)
- National Science Foundation (BSR 84‐15857)
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