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Updated: Oct 1, 2025

Cytological Analysis of Spermatogenesis: Live and Fixed Preparations of Drosophila Testes
Published on: January 20, 2014
The life history of Drosophila sperm involves molecular continuity between male and female reproductive tracts
Erin L McCullough1, Emma Whittington1, Akanksha Singh2
1Department of Biology, Center for Reproductive Evolution, Syracuse University, Syracuse, NY 13244.
Abstract:
SignificanceIn species with internal fertilization, sperm spend an important part of their lives within the female. To examine the life history of the sperm during this time, we used semiquantitative proteomics and sex-specific isotopic labeling in fruit flies to determine the extent of molecular continuity between male and female reproductive tracts and provide a global catalog of sperm-associated proteins. Multiple seminal fluid proteins and female proteins associate with sperm immediately after mating. Few seminal fluid proteins remain after long-term sperm storage, whereas female-derived proteins constitute one-fifth of the postmating sperm proteome by then. Our data reveal a molecular "hand-off" from males to females, which we postulate to be an important component of sperm-female interactions.
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