Sperm competition in 13 lined ground squirrels
Here's number seven in my series. It's about sperm competition and male mate choice in 13 lined ground squirrels.
Sperm competition may have led to divergence in testes size among species of Primates.
sperm competition A situation in which one male's sperm fertilize a disproportionate number of eggs when a female copulates with more than one male.
This less appreciated mechanism is the basis for differential fertilization which includes sperm selection as opposed to pollen selection in plants. This should not be confused with sperm competition / pollen tube competition (link to a ...
 See also: Sperm, Human, Evolution, Long, Origin
  
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