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Journal of Entomology and Zoology Studies
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P-ISSN: 2349-6800, E-ISSN: 2320-7078

Journal of Entomology and Zoology Studies

2018, Vol. 6, Issue 3
Trigoniulid size dimorphism breaks Rensch

Mark Ian Cooper

This present research aims to clarify the relative sexual size dimorphism of Centrobolus (Cook) in 18 congenerics. Millipedes illustrated reversed sexual size dimorphism (SSD) where females were larger than males; and break Rensch’s rule as this dimorphism increased with body size. SSD was calculated in 18 species of the genus Centrobolus and illustrated was illustrated in 2 regressions: (1) male versus female SSD and (2) SSD and body size. The allometric equation for Centrobolus was (1) Å·=0.00051X0.01071. SSD ranged from 0.63–2.89 (1.55±0.63; n≥18) and was not negatively correlated (R=0.70485; P=0.00109; n=18 spp.) with a volumetric index of body size ranging from 284–2683 mm3 (1097.89±638.06; 18). The rejection of the rule appears consistent in some animals.
Pages : 1232-1234 | 1173 Views | 325 Downloads


Journal of Entomology and Zoology Studies Journal of Entomology and Zoology Studies
How to cite this article:
Mark Ian Cooper. Trigoniulid size dimorphism breaks Rensch. J Entomol Zool Stud 2018;6(3):1232-1234. DOI: 10.22271/j.ento.2018.v6.i3.9.09

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