Genetic signatures of a demographic collapse in a large-bodied forest dwelling primate (Mandrillus leucophaeus)
Article first published online: 10 FEB 2012
© 2011 The Authors. MicrobiologyOpen published by Blackwell Publishing Ltd.
This is an open access article under the terms of the Creative Commons Attribution-NonCommercial License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.
Ecology and Evolution
Volume 2, Issue 3, pages 550–561, March 2012
How to Cite
Ting, N., Astaras, C., Hearn, G., Honarvar, S., Corush, J., Burrell, A. S., Phillips, N., Morgan, B. J., Gadsby, E. L., Raaum, R. and Roos, C. (2012), Genetic signatures of a demographic collapse in a large-bodied forest dwelling primate (Mandrillus leucophaeus). Ecology and Evolution, 2: 550–561. doi: 10.1002/ece3.98
- Issue published online: 12 MAR 2012
- Article first published online: 10 FEB 2012
- Received: 09 September 2011; Revised: 29 November 2011; Approved: 29 November 2011
- Bayesian Skyline Plot;
- climate change;
- Cross-Sanaga-Bioko forests;
It is difficult to predict how current climate change will affect wildlife species adapted to a tropical rainforest environment. Understanding how population dynamics fluctuated in such species throughout periods of past climatic change can provide insight into this issue. The drill (Mandrillus leucophaeus) is a large-bodied rainforest adapted mammal found in West Central Africa. In the middle of this endangered monkey's geographic range is Lake Barombi Mbo, which has a well-documented palynological record of environmental change that dates to the Late Pleistocene. We used a Bayesian coalescent-based framework to analyze 2,076 base pairs of mitochondrial DNA across wild drill populations to infer past changes in female effective population size since the Late Pleistocene. Our results suggest that the drill underwent a nearly 15-fold demographic collapse in female effective population size that was most prominent during the Mid Holocene (approximately 3-5 Ka). This time period coincides with a period of increased dryness and seasonality across Africa and a dramatic reduction in forest coverage at Lake Barombi Mbo. We believe that these changes in climate and forest coverage were the driving forces behind the drill population decline. Furthermore, the warm temperatures and increased aridity of the Mid Holocene are potentially analogous to current and future conditions faced by many tropical rainforest communities. In order to prevent future declines in population size in rainforest-adapted species such as the drill, large tracts of forest should be protected to both preserve habitat and prevent forest loss through aridification.