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. 1999 Oct;153(2):837–844. doi: 10.1093/genetics/153.2.837

Male seminal fluid proteins are essential for sperm storage in Drosophila melanogaster.

U Tram 1, M F Wolfner 1
PMCID: PMC1460800  PMID: 10511561

Abstract

The seminal fluid that is transferred along with sperm during mating acts in many ways to maximize a male's reproductive success. Here, we use transgenic Drosophila melanogaster males deficient in the seminal fluid proteins derived from the accessory gland (Acps) to investigate the role of these proteins in the fate of sperm transferred to females during mating. Competitive PCR assays were used to show that while Acps contribute to the efficiency of sperm transfer, they are not essential for the transfer of sperm to the female. In contrast, we found that Acps are essential for storage of sperm by females. Direct counts of stored sperm showed that 10% of normal levels are stored by females whose mates transfer little or no Acps along with sperm.

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Selected References

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