Acoustic stimulation as a tool in African wild dog conservation

摘要

A 9-year study of the African wild dog, Lycaon pictus, was conducted in Hwange National Park, Zimbabwe, primarily in Colophospermum mopane woodland and Combretum thicket. A protocol using both playbacks and human simulations of long distance calls was developed to facilitate radio-collaring operations and data collection. Wild dogs were known to be in the area prior to each trial (n = 32). Dogs approached calling stations in 84% of trials from distances up to 2-km. When dogs hooed (n = 18; eight packs and one group), they approached the stimulus in all but one trial. Mean time to approach was ca. 13.9 +/- 2.6 min. (n = 11 trials, range 1-56 min). Findings demonstrate that playbacks are an effective conservation tool particularly where road networks are limited and/or thick habitat restrict off-road driving. Potential application lies in park boundary areas where snaring occurs and in translocations from areas of high wild dog/human conflict to refuges. In dense habitat or less traveled areas, this technique, in conjunction with other methods, may prove useful in population surveys.