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Journal of Entomology and Zoology Studies
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ISSN Print: 2349-6800 | ISSN Online: 2320-7078

Journal of Entomology and Zoology Studies

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2017, Vol. 5, Issue 3
Copulation and sexual size dimorphism in worm-like millipedes

Mark Ian Cooper

The prediction that copulation duration is shorter when sexual size dimorphism increases was tested in juliform millipedes at the population-level and species-level by tabulating and correlating ratios for mean sexual size dimorphism ranging from 1.0-1.6 (n=310) with mean copulation duration ranging from 34-206 minutes (n=391) in 8 taxa: ord. Spirostreptida fam. Odontopygidae gen. Odontopyge (n=2spp.), Spinotarsus (n=1sp.) and fam. Spirostreptidae gen. Calostreptus (n=1sp.), Doratogonus (n=1sp.); and ord. Spirobolida fam. Trigoniulidae gen. Centrobolus (n=3spp.). Copulation duration and sexual size dimorphism were inversely correlated across populations (r=-0.5975, N=11, P=0.05) but not species. This study contributes to the allometry of copulation.
Pages : 1264-1266 | 1122 Views | 50 Downloads
How to cite this article:
Mark Ian Cooper. Copulation and sexual size dimorphism in worm-like millipedes. J Entomol Zool Stud 2017;5(3):1264-1266. DOI: 10.22271/j.ento.2017.v5.i3r.03
Journal of Entomology and Zoology Studies
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