Sentences with phrase «ejaculate traits»
By measuring multiple ejaculate traits of each male, the study characterized complex patterns of multivariate selection on combinations of sperm size, speed, and swimming path straightness.
http://amnat.org/ Not exact matches
Almost nothing is known about what determines the sperm's fate in hybrid matings where there may be an evolutionary mismatch between ejaculate and female reproductive tract traits.
«In all likelihood it does not pay for a male to increase investment in both traits concurrently, perhaps because males with larger weaponry face reduced levels of sperm competition and thus have no need to boost the size of their ejaculates, which are energetically expensive to produce.»
Here, we exploit the experimental tractability of a broadcast spawning marine invertebrate to overcome these challenges and characterise multivariate sexual selection on sperm traits when multiple ejaculates compete.