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- W4313236522 abstract "Divergence in sperm phenotype and female reproductive environment may be a common source of postmating prezygotic (PMPZ) isolation between species. However, compared to other reproductive barriers it has received much less attention. In this study, we examined sperm morphology and velocity in two hybridizing passerine species, the common nightingale (Luscinia megarhynchos) and thrush nightingale (L. luscinia). In addition, we for the first time characterized a passerine female reproductive tract fluid proteome. We demonstrate that spermatozoa of the common nightingale have significantly longer and wider midpiece (proximal part of the flagellum containing mitochondria) and longer tail compared to spermatozoa of thrush nightingale. On the other hand, they have significantly shorter and narrower acrosome. Importantly, these differences did not have any effect on sperm velocity. Furthermore, the fluid from the reproductive tract of common nightingale females did not differentially affect velocity of conspecific and heterospecific sperm. Our results indicate that the observed changes in the flagellum and acrosome size are unlikely to contribute to PMPZ isolation through differential sperm velocity of conspecific and heterospecific sperm in the female reproductive tract. However, they could affect other postcopulatory processes, which might be involved in PMPZ isolation, such as sperm storage, longevity or sperm-egg interaction." @default.
- W4313236522 created "2023-01-06" @default.
- W4313236522 creator A5005330931 @default.
- W4313236522 creator A5009591184 @default.
- W4313236522 creator A5013972640 @default.
- W4313236522 creator A5020866088 @default.
- W4313236522 creator A5030717018 @default.
- W4313236522 creator A5045949979 @default.
- W4313236522 creator A5049965196 @default.
- W4313236522 creator A5059970674 @default.
- W4313236522 creator A5062531433 @default.
- W4313236522 creator A5074390198 @default.
- W4313236522 creator A5081383225 @default.
- W4313236522 creator A5084971054 @default.
- W4313236522 creator A5088669926 @default.
- W4313236522 date "2022-12-24" @default.
- W4313236522 modified "2023-10-09" @default.
- W4313236522 title "Sperm morphology and performance in relation to postmating prezygotic isolation in two recently diverged passerine species" @default.
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