1365-294X/asset/MEC_centre.gif?v=1&s=a3addb330bee9658564df3325c89548d75a4238d)
Estimating population sizes for elusive animals: the forest elephants of Kakum National Park, Ghana
Article first published online: 7 MAY 2003
DOI: 10.1046/j.1365-294X.2003.01822.x
Additional Information
How to Cite
Eggert, L. S., Eggert, J. A. and Woodruff, D. S. (2003), Estimating population sizes for elusive animals: the forest elephants of Kakum National Park, Ghana. Molecular Ecology, 12: 1389–1402. doi: 10.1046/j.1365-294X.2003.01822.x
Publication History
- Issue published online: 7 MAY 2003
- Article first published online: 7 MAY 2003
- Received 9 July 2002; revision received 5 January 2003; accepted 24 January 2003
- Abstract
- Article
- References
- Cited By
Keywords:
- dung counts;
- genetic tagging;
- genetic censusing;
- microsatellites;
- molecular scatology;
- noninvasive sampling
Abstract
African forest elephants are difficult to observe in the dense vegetation, and previous studies have relied upon indirect methods to estimate population sizes. Using multilocus genotyping of noninvasively collected samples, we performed a genetic survey of the forest elephant population at Kakum National Park, Ghana. We estimated population size, sex ratio and genetic variability from our data, then combined this information with field observations to divide the population into age groups. Our population size estimate was very close to that obtained using dung counts, the most commonly used indirect method of estimating the population sizes of forest elephant populations. As their habitat is fragmented by expanding human populations, management will be increasingly important to the persistence of forest elephant populations. The data that can be obtained from noninvasively collected samples will help managers plan for the conservation of this keystone species.