Study About Size Dimorphism and Directional Selection in Forest Millipedes | Chapter 2 | New Visions in Biological Science Vol.9

 In the diplopod genus Centrobolus, sexual size dimorphism (SSD) has a positive connection with body size. Spirobolida diplopod species can be identified using size criteria. The key components of interspecific variation in diplopod species are length, width, and rings. In six species, interspecific size variation was estimated, and data sets were checked for normality. All of the data that was observed and tested was normal. The goal was to use MEDCALC® to measure and compare intersexual variation (coefficients of variation) in length and width in nine species. There was a considerable directional selection for slender males in C. digrammus, C. inscriptus, and C. silvanus.

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/5863

Study on Year-round Correlation between Mass and Copulation Duration in Forest Millipedes | Chapter 9 | New Visions in Biological Science Vol. 8

 Diet, copulation time, copulation energy expenditure, oxygen intake, precipitation, sex, and temperature are all factors that influence diplopod size. In the diplopod genus Centrobolus, sexual size dimorphism (SSD) has a positive connection with body size and copulation duration. The goal of this study was to see if body mass was connected to copulation duration over the course of a year. In forest millipedes, intraspecific variation in mass was assessed and linked with copulation duration (R2=0.68, d.f.=7, p=0.01). In forest millipede species, interspecific variation in mass was assessed and linked with copulation duration (R=0.6711, R2=0.4504, p=0.144473, n= 3, 3).

Author(S) Details

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

View Book:- https://stm.bookpi.org/NVBS-V8/article/view/5383