Hunting of flying foxes and perception of disease risk in Indonesian Borneo |
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Authors: | Mark E Harrison Susan M Cheyne Fiteria Darma Dwi Angan Ribowo Suwido H Limin Matthew J Struebig |
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Institution: | aWildlife Research Group, The Anatomy School, University of Cambridge, Downing Street, Cambridge CB2 3DY, UK;bOrangutan Tropical Peatland Project, Centre for the International Cooperation in Sustainable Management of Tropical Peatlands, Universitas Palangka Raya, Palangka Raya 73112, Central Kalimantan, Indonesia;cWildlife Conservation Research Unit (WildCRU), Department of Zoology, Oxford University, Tubney, Abingdon Road, OX13 5QL, UK;dCentre for the International Cooperation in Tropical Peatlands, Universitas Palangka Raya, Palangka Raya 73112, Central Kalimantan, Indonesia;eFaculty of Forestry, Universitas Mulawarman, Samarinda 75117, East Kalimantan, Indonesia;fDurrell Institute of Conservation and Ecology, School of Anthropology and Conservation, University of Kent, Canterbury CT2 7NR, UK;gSchool of Biological & Chemical Sciences, Queen Mary University of London, Mile End Road, London E1 4NS, UK |
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Abstract: | Widespread hunting of flying foxes has generated concern regarding population declines and the spread of emerging infectious diseases. To investigate the potential impacts of this trade, we conducted questionnaires in 45 settlements across 12 population centres within Central Kalimantan, Indonesia, a region previously identified as a hunting hotspot. By combining results from 63 hunter and 88 vendor interviews, we highlight two population centres (Palangka Raya and Buntok/Tamiang Layang) with higher hunting rates than other areas, which act as flying fox trading hubs. Flying fox populations were perceived to be declining province-wide: declines in captures and sales were reported by 81% of hunters and 60% of market vendors, who also reported availability as the key factor underlying temporal variations in trade. There was substantial risk of zoonotic disease transmission between bats, hunters and traders: the vast majority of respondents were unaware that flying foxes carry potentially fatal viruses, and so few people protected themselves from physical contact. Moreover, both hunters and vendors were frequently bitten and the majority of bites drew blood. Most hunters (58%) also reported unintentional by-catches that included keystone bird species and slow lorises. The scale of hunting over Central Kalimantan represents a serious threat to the long-term viability of flying fox populations (and potentially those of other species), and could have serious public health implications. Reducing or eliminating hunting and trade would mitigate the risk of disease transmission, while maintaining the economic and ecosystem benefits that flying foxes provide, in terms of pollination and seed dispersal. |
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Keywords: | Pteropus vampyrus Hunting Emerging infectious disease Wildlife trade Henipavirus Bat |
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