Quantitative genetic correlation between trait and preference supports a sexually selected sperm process
Leigh, W., Simmons, Kotiaho, Janne Sakari. (2007). Quantitative genetic correlation between trait and preference supports a sexually selected sperm process. Proceedings of the National Academy of Sciences of the United States of America, 104(42), 16604-16608. https://doi.org/10.1073/pnas.0704871104
Päivämäärä
2007Oppiaine
Ekologia ja evoluutiobiologiaEvoluutiotutkimus (huippuyksikkö)Ecology and Evolutionary BiologyCentre of Excellence in Evolutionary ResearchTekijänoikeudet
© 2007 by The National Academy of Sciences of the USA
Sperm show patterns of rapid and divergent evolution that are
characteristic of sexual selection. Sperm competition has been
proposed as an important selective agent in the evolution of sperm
morphology. However, several comparative analyses have revealed evolutionary associations between sperm length and female reproductive tract morphology that suggest patterns of
male–female coevolution. In the dung beetle Onthophagus taurus,
males with short sperm have a fertilization advantage that depends on the size of the female’s sperm storage organ, the
spermatheca; large spermathecae select for short sperm. Sperm
length is heritable and is genetically correlated with male condition. Here we report significant additive genetic variation and
heritability for spermatheca size and genetic covariance between
spermatheca size and sperm length predicted by both the ‘‘goodsperm’’ and ‘‘sexy-sperm’’ models of postcopulatory female preference. Our data thus provide quantitative genetic support for the
role of a sexually selected sperm process in the evolutionary
divergence of sperm morphology, in much the same manner as
precopulatory female preferences drive the evolutionary divergence of male secondary sexual traits.
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http://www.pnas.org/cgi/doi/10.1073/pnas.0704871104Julkaisu tutkimustietojärjestelmässä
https://converis.jyu.fi/converis/portal/detail/Publication/17057027
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