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Fig. 5. spe-38 sperm accelerate ovulation rates and participate in sperm
competition. (A) The level of ovulation in unmated spe-38 and
wild-type (N2) hermaphrodites is significantly higher than in unmated
fem-1 controls (*P<0.001, when compared
fem-1 at 25°C, Student's t-test). (B) Quantitative
analysis of fertilized and unfertilized oocytes laid by unmated fem-1
females, as well as fem-1 females crossed to either wild-type
him-5 males or mutant spe-38; him-5 males. Sperm from
wild-type and spe-38 males induce comparable ovulation rates, which
are significantly higher than those of the unmated fem-1 controls
(*P<0.001, Student's t-test). (C)
Hermaphrodite sperm from morphologically marked (dpy-5), but
otherwise wild-type, hermaphrodites are out-competed by male sperm from either
wild-type him-5 or mutant spe-38(eb44); him-5 males. In both
cases, the self-fertility of mated dpy-5 hermaphrodites was
significantly depressed when compared with unmated controls
(*P<0.001, Student's t-test). All counts for
the indicated genotypes were performed on a minimum of eight individuals or
crosses. Error bars indicate s.d.
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