Sunday 27 February 2022

Why Sexual Size Dimorphism Increases with Longitude, Precipitation and Temperature and Decreases with Latitude in Forest Millipedes Centrobolus Cook, 1897| Chapter 9 | New Visions in Biological Science Vol.9

 The goal of this research was to see what happened when Bergmann's Rule collided with Rensch's Rule Sexual Size Dimorphism (SSD) and body size varied as a result of eco-geographical factors. In the woodland millipede genus Centrobolus, body size and SSD were associated with latitude, longitude, precipitation, and temperature. SSD and longitude (r=0.37, Z score=1.71, n=22, p=0.04), precipitation (r=0.29, Z score=1.28, n=22, p0.010), and temperature (r=0.34, Z score=1.49, n=22, p0.07) all had significant positive relationships. SSD and latitude had a significant relationship (r=-0.44, Z score=2.05, n=22, p=0.02). Larger females and greater SSD exist in warmer, wetter north-eastern settings, indicating eco-geographical variation in polygynandrous reproductive systems.

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/5875

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