Copulation duration variance in forest millipedes was examined as one of the deciding elements of copulation duration across arthropods. The goal was to figure out how much variance there was in copulation time. The null hypothesis was that mean copulation duration and variance were unaffected by body mass. In the literature, copulation duration and standard deviation squared for four millipede populations were found. Copulation duration and variance were associated (r=0.95, r2=0.90, n=5, p=0.01). C. anulatus had the shortest duration (34.9 minutes) and C. inscriptus had the longest (303 minutes) The variance in copulation length was linked with female mass (r=0.95, z-score=1.86, n=4, p=0.03). Millipedes, like several arachnids, had a correlation between copulation duration and variance in copulation duration and intra-specific size variation. Female mass and copulation time were associated (r=0.99, z-score=2.71, n=4, p0.01). Male mass was associated to sexual size dimorphism (r=-0.97, z-score=-2.17, n=4, p=0.01). Longer copulation duration was thought to be connected to sperm competition intensity and female control of copulation duration. Females regulate the length of copulation dependent on their bulk.
Author(s) Details:
Mark Cooper,
School of Animal, Plant & Environmental Sciences University of the
Witwatersrand, Johannesburg 2050, South Africa.
Please see the link here: https://stm.bookpi.org/NVBS-V9/article/view/5866
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