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Citation	Alipaz, J.A., Wu, C.I., Karr, T.L. (2001). Gametic incompatibilities between races of Drosophila melanogaster. Proc. Biol. Sci. 268(1469): 789--795. (Export to RIS)
FlyBase ID	FBrf0135936
Publication Type	Research paper
PubMed ID	11345322
PubMed Abstract	Reproductive-isolating mechanisms between nascent species may involve sperm-egg recognition and have been best described in externally fertilizing organisms where such recognition is essential in preventing undesirable fertilizations. However, reproductive barriers in internally fertilizing species differ in significant ways, and a direct role for sperm-egg interactions has yet to be demonstrated. Females of many strains of Drosophila melanogaster from Zimbabwe, Africa, do not mate readily with cosmopolitan males. This polymorphism in mate choice is postulated to represent incipient speciation. We now report that, in one direction, crosses between the above populations produce far fewer offspring than reciprocal crosses due to a lower rate of egg hatch. We established that egg inviability in these crosses was due to defects in fertilization. Thus, even in taxa with internal fertilization, gametic incompatibility may be a mechanism relevant to reproductive isolation during incipient speciation.
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Language of Publication	English
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Publication Type	Journal
Abbreviation	Proc. Biol. Sci.
Title	Proceedings. Biological sciences / The Royal Society.
Publication Year	1990-
ISBN/ISSN	0962-8452 1471-2954
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