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Copulation in spiders: experimental evidence for fatigue effects and bilateral control of palpal insertions.
Authors:J S Rovner  E E Wright
Abstract:Male lycosid spiders were prevented from using one palp during the first third of copulation by a sling that we then cut to free the palp. Initial insertion durations of the treated palp were significantly shorter than those shown concurrently by the much-used normal palp; they showed temporal patterning unaffected by use of the normal palp. Data indicate that there are relatively independent control mechanisms for each palp and support the hypothesis that fatigue causes the increased duration of successive palpal insertions. Our data also suggest that normal matings terminate due to maximal use of either palp by the male.
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