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Providing evidence to improve practice

Action: Ban exports of hunting trophies Terrestrial Mammal Conservation

Key messages

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  • One study evaluated the effects of banning exports of hunting trophies on wild mammals. This study was in Cameroon.



  • Abundance (1 study): A before-and-after study in Cameroon found similar hippopotamus abundances before and after a ban on exporting hippopotamus hunting trophies.


Supporting evidence from individual studies


A before-and-after study in 2000–2014 along a river within and around Faro National Park, Cameroon (Scholte et al. 2017) found similar numbers of hippopotamuses Hippopotamus amphibious before and after a ban on exporting of hippopotamus hunting trophies. Results were not tested for statistical significance. Two years after a ban on exporting hippopotamus hunting trophies, 685 hippopotamuses were counted, compared with 647 hippopotamuses counted 12 years before the ban and 525 counted four years before the ban. CITES (Convention on International Trade in Endangered Species of Wild Fauna and Flora) suspended exports of hippopotamus trophies from Cameroon in 2012. In March 2014, hippopotamuses were counted over three days in the dry season, along 97 km of the Faro River. Animals were counted between 07:30 and 17:30 h, by two teams of 2–3 observers. Observers walked through the riverbed at a speed of 1–4 km/hour. Similar counting methods were used in 2000 and 2008 (twelve and four years before the ban respectively) but precise details are not given.

Referenced papers

Please cite as:

Littlewood, N.A., Rocha, R., Smith, R.K., Martin, P.A., Lockhart, S.L., Schoonover, R.F., Wilman, E., Bladon, A.J., Sainsbury, K.A., Pimm S. and Sutherland, W.J. (2020) Terrestrial Mammal Conservation: Global Evidence for the Effects of Interventions for terrestrial mammals excluding bats and primates. Synopses of Conservation Evidence Series. University of Cambridge, Cambridge, UK.