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Arthropods, 2020, 9(1): 15-20
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Article

Year-round correlation between mass and copulation duration in forest millipedes

Mark Cooper
School of Animal, Plant and Environmental Sciences, University of the Witwatersrand, Johannesburg 2050, South Africa

Received 14 August 2019;Accepted 20 September 2019;Published 1 March 2020
IAEES

Abstract
Correlates of diplopod size include diet, copulation duration, energy expense of copulation, oxygen consumption, precipitation, sex and temperature. Sexual Size Dimorphism (SSD) in the diplopod genus Centrobolus has a positive correlation with body size and copulation duration. Intraspecific variation in mass was calculated in forest millipedes and correlated with copulation duration (R²=0.68, d.f.=7, p=0.01). Interspecific variation in mass was calculated in forest millipede species and correlated with copulation duration (R=0.6711, R²=0.4504, p=0.144473, n= 3, 3).

Keywords copulation;Diplopoda;horizontal;lighter;mass.

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