Sperm in competition: not playing by the numbers.
- R. Snook
- BiologyTrends in Ecology & Evolution
What do we need to know about speciation?
Offsetting effects of Wolbachia infection and heat shock on sperm production in Drosophila simulans: analyses of fecundity, fertility and accessory gland proteins.
It is found that heat shock, which is known to decrease CI expression, increases sperm production to a greater extent in infected compared to uninfected males, suggesting a possible link between sperm production and heat shock.
Male attractiveness, fertility and susceptibility to oxidative stress are influenced by inbreeding in Drosophila simulans
- K. Okada, J. D. Blount, M. Sharma, R. Snook, D. Hosken
- BiologyJournal of Evolutionary Biology
- 1 February 2011
It is found that male fertility and attractiveness were especially susceptible to inbreeding depression and levels of testicular oxidative stress were significantly elevated in inbred males, although sperm viability did not differ between inbred and outbred males.
The evolutionary origin and maintenance of sperm: selection for a small, motile gamete mating type
Functional nonequivalence of sperm in Drosophila pseudoobscura.
It is found that two size classes of sperm are produced and transferred to females in approximately equal numbers by the male; only long sperm persist in significant numbers in female sperm storage organs, falsifying those hypotheses in which all sperm types are assumed to be functionally equivalent (fertilize eggs).
A Sterile Sperm Caste Protects Brother Fertile Sperm from Female-Mediated Death in Drosophila pseudoobscura
The Impact of Climate Change on Fertility.
Evolutionary Ecology of the Prezygotic Stage
There are striking parallels in the role of prezygotic competition for sexual selection on males, cryptic female choice, sexual conflict, and against selfish genetic elements and genetic incompatibility in sexually reproducing animals and flowering plants.