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An evolutionary game theoretic model of rhino horn devaluation

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  • Glynatsi, Nikoleta E.
  • Knight, Vincent
  • Lee, Tamsin E.

Abstract

Rhino populations are at a critical level due to the demand for rhino horn and the subsequent poaching. Wildlife managers attempt to secure rhinos with approaches to devalue the horn, the most common of which is dehorning. Game theory has been used to examine the interaction of poachers and wildlife managers where a manager can either ‘dehorn’ their rhinos or leave the horn attached and poachers may behave ‘selectively’ or ‘indiscriminately’. The approach described in this paper builds on this previous work and investigates the interactions between the poachers. We build an evolutionary game theoretic model and determine which strategy is preferred by a poacher in various different populations of poachers. The purpose of this work is to discover whether conditions which encourage the poachers to behave selectively exist, that is, they only kill those rhinos with full horns.

Suggested Citation

  • Glynatsi, Nikoleta E. & Knight, Vincent & Lee, Tamsin E., 2018. "An evolutionary game theoretic model of rhino horn devaluation," Ecological Modelling, Elsevier, vol. 389(C), pages 33-40.
    • Handle: RePEc:eee:ecomod:v:389:y:2018:i:c:p:33-40
    DOI: 10.1016/j.ecolmodel.2018.10.003
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    References listed on IDEAS

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    1. Erwin H. Bulte & G. Cornelis van Kooten, 1999. "Economics of Antipoaching Enforcement and the Ivory Trade Ban," American Journal of Agricultural Economics, Agricultural and Applied Economics Association, vol. 81(2), pages 453-466.
    2. Douglas J. Crookes & James N. Blignaut, 2015. "A categorisation and evaluation of rhino management policies," Working Papers 506, Economic Research Southern Africa.
    3. Douglas J. Crookes & James N. Blignaut, 2016. "A categorisation and evaluation of rhino management policies," Development Southern Africa, Taylor & Francis Journals, vol. 33(4), pages 459-469, July.
    4. Lee, Tamsin E. & Roberts, David L., 2016. "Devaluing rhino horns as a theoretical game," Ecological Modelling, Elsevier, vol. 337(C), pages 73-78.
    5. Harvey, Ross & Alden, Chris & Wu, Yu-Shan, 2017. "Speculating a Fire Sale: Options for Chinese Authorities in Implementing a Domestic Ivory Trade Ban," Ecological Economics, Elsevier, vol. 141(C), pages 22-31.
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    Cited by:

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    2. Pan, Feng & Diao, Zexin & Wang, Lin, 2023. "The impact analysis of media attention on local environmental governance based on four-party evolutionary game," Ecological Modelling, Elsevier, vol. 478(C).

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