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      Uncovering the fruit bat bushmeat commodity chain and the true extent of fruit bat hunting in Ghana, West Africa

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          Highlights

          ► We study how fruit bats are hunted and sold as bushmeat in Ghana, West Africa. ► Globally, bats are under-represented in market reviews, and threatened by hunting. ► 128,000 Eidolon helvum are sold each year in southern Ghana. ► Fruit bats do not follow the normal commodity chain for bushmeat. ► E. helvum may be missed by market surveys and threatened by this level of hunting.

          Abstract

          Harvesting, consumption and trade of bushmeat are important causes of both biodiversity loss and potential zoonotic disease emergence. In order to identify possible ways to mitigate these threats, it is essential to improve our understanding of the mechanisms by which bushmeat gets from the site of capture to the consumer’s table. In this paper we highlight the previously unrecognized scale of hunting of the African straw-colored fruit bat, Eidolon helvum, a species which is important in both ecological and public health contexts, and describe the commodity chain in southern Ghana for its trade. Based on interviews with 551 Ghanaians, including bat hunters, vendors and consumers, we estimate that a minimum of 128,000 E. helvum bats are sold each year through a commodity chain stretching up to 400 km and involving multiple vendors. Unlike the general bushmeat trade in Ghana, where animals are sold in both specialized bushmeat markets and in restaurants, E. helvum is sold primarily in marketplaces; many bats are also kept by hunters for personal consumption. The offtake estimated in this paper raises serious conservation concerns, while the commodity chain identified in this study may offer possible points for management intervention. The separation of the E. helvum commodity chain from that of other bushmeat highlights the need for species-specific research in this area, particularly for bats, whose status as bushmeat is largely unknown.

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          Most cited references52

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          Evidence of Henipavirus Infection in West African Fruit Bats

          Henipaviruses are emerging RNA viruses of fruit bat origin that can cause fatal encephalitis in man. Ghanaian fruit bats (megachiroptera) were tested for antibodies to henipaviruses. Using a Luminex multiplexed microsphere assay, antibodies were detected in sera of Eidolon helvum to both Nipah (39%, 95% confidence interval: 27–51%) and Hendra (22%, 95% CI: 11–33%) viruses. Virus neutralization tests further confirmed seropositivity for 30% (7/23) of Luminex positive serum samples. Our results indicate that henipavirus is present within West Africa.
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            Biodiversity studies: science and policy.

            Biodiversity studies comprise the systematic examination of the full array of different kinds of organisms together with the technology by which the diversity can be maintained and used for the benefit of humanity. Current basic research at the species level focuses on the process of species formation, the standing levels of species numbers in various higher taxonomic categories, and the phenomena of hyperdiversity and extinction proneness. The major practical concern is the massive extinction rate now caused by human activity, which threatens losses in the esthetic quality of the world, in economic opportunity, and in vital ecosystem services.
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              Flying foxes cease to function as seed dispersers long before they become rare.

              Rare species play limited ecological roles, but particular behavioral traits may predispose species to become functionally extinct before becoming rare. Flying foxes (Pteropodid fruit bats) are important dispersers of large seeds, but their effectiveness is hypothesized to depend on high population density that induces aggressive interactions. In a Pacific archipelago, we quantified the proportion of seeds that flying foxes dispersed beyond the fruiting canopy, across a range of sites that differed in flying fox abundance. We found the relationship between ecological function (seed dispersal) and flying fox abundance was nonlinear and consistent with the hypothesis. For most trees in sites below a threshold abundance of flying foxes, flying foxes dispersed < 1% of the seeds they handled. Above the threshold, dispersal away from trees increased to 58% as animal abundance approximately doubled. Hence, flying foxes may cease to be effective seed dispersers long before becoming rare. As many species' populations decline worldwide, identifying those with threshold relationships is an important precursor to preservation of ecologically effective densities.
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                Author and article information

                Journal
                Biol Conserv
                Biol. Conserv
                Biological Conservation
                Applied Science Publishers [etc.]
                0006-3207
                December 2011
                December 2011
                : 144
                : 12
                : 3000-3008
                Affiliations
                [a ]Cambridge Infectious Disease Consortium, Dept. of Veterinary Medicine, University of Cambridge, Madingley Road, Cambridge CB3 0ES, UK
                [b ]Institute of Zoology, Zoological Society of London, Regent’s Park, London NW1 4RY, UK
                [c ]Centre for African Wetlands, University of Ghana, P. O. Box LG 67, Legon, Accra, Ghana
                [d ]Wildlife Division of the Forestry Commission, Accra, Ghana
                Author notes
                [* ]Corresponding author at: Cambridge Infectious Disease Consortium, Dept. of Veterinary Medicine, University of Cambridge, Madingley Road, Cambridge CB3 0ES, UK. Tel.: +44 (0) 7771434980. aok23@ 123456cam.ac.uk
                Article
                BIOC4953
                10.1016/j.biocon.2011.09.003
                3323830
                22514356
                c509a86a-a5a0-48c8-b6d1-42c36fdb7d76
                © 2011 Elsevier Ltd.

                This document may be redistributed and reused, subject to certain conditions.

                History
                : 12 July 2011
                : 6 September 2011
                : 9 September 2011
                Categories
                Article

                Ecology
                commodity chain,bushmeat hunting,eidolon helvum,fruit bat hunting,ghana
                Ecology
                commodity chain, bushmeat hunting, eidolon helvum, fruit bat hunting, ghana

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