[en] In Gabon, like elsewhere in Africa, crops are often sources of conflict between humans and wildlife. Wildlife damage to crops can drastically reduce income, amplifying poverty and creating a negative perception of wild animal conservation among rural people. In this context, crop-raiding animals like elephants quickly become “problem animals”. To deter elephants from raiding crops beehives have been successfully employed in East Africa; however, this method has not yet been tested in Central Africa. We experimentally examined whether the presence of Apis mellifera adansonii, the African honey bee species present in Central Africa, deters forest elephants (Loxodonta Africana cyclotis) from feeding on fruit trees. We show for the first time that the effectiveness of beehives as deterrents of elephants is related to bee activity. Empty hives and those housing colonies of low bee activity do not deter elephants all the time; but beehives with high bee activity do. Although elephant disturbance of hives does not impede honey production, there is a tradeoff between deterrence and the quantity of honey produced. To best achieve the dual goals of deterring elephants and producing honey colonies must maintain an optimum activity level of 40 to 60 bee movements per minute. Thus, beehives colonized by Apis mellifera adansonii bees can be effective elephant deterrents, but people must actively manage hives to maintain bee colonies at the optimum activity level.
Graham MD. Coexistence in a Land Use Mosaic? Land Use, Risk and Elephant Ecology in Laikipia District, Kenya [PhD Thesis]. University of Cambridge, UK; 2006. Available: http://savetheelephants.org/wp-content/uploads/2014/03/2006Landuserisk.pdf
Treves A, Wallace RB, Naughton-Treves L, Morales A. Co-Managing Human - Wildlife Conflicts: A Review. Hum Dimens Wildl. 2006; 11(6):383-96.
Walker KL. Moving away from prescriptive pachyderm palliatives: toward an integrated assessment of farmer-elephant conflict in Gabon [PhD Thesis]. University of Michigan, USA; 2010. Available: http://deepblue.lib.umich.edu/handle/2027.42/75922
Graham MD, Ochieng T. Uptake and performance of farm-based measures for reducing crop raiding by elephants Loxodonta africana among smallholder farms in Laikipia District, Kenya. Oryx. 2008; 42(01):76-82.
Hoare R. Determinants of human-elephant conflict in a land-use mosaic. J Appl Ecol. 1999; 36:689-700.
Soulemane O. Déterminisme des migrations des éléphants de la Forêt classée du Haut-Sassandra, Côte d'Ivoire. Pachyderm. 2003; 35:60-70.
Barnes RFW, Dubiure UF, Danquah E, Boafo Y, Nandjui A, Hema EM, et al. Crop-raiding elephants and the moon. Afr J Ecol. 2007; 45(1):112-5.
Blake S. The ecology of forest elephant distribution and its implications for conservation [PhD Thesis]. University of Edinburgh, UK; 2002. Available: http://www.researchgate.net/profile/Stephen-Blake2/publication/265032366-The-Ecology-of-Forest-Elephant-Distribution-and-its-Implications-for-Conservation/links/54ad7c6b0cf24aca1c6f5d95.pdf
Santiapillai C, Prithiviraj F, Manori G. A strategy for the conservation of the Asian elephant in Sri Lanka. Gajah. 2006; 25:91-102.
Clark CJ, Poulsen JR, Malonga R, Elkan PW Jr. Logging Concessions Can Extend the Conservation Estate for Central African Tropical Forests. Conserv Biol. 2009; 23(5):1281-93. doi: 10.1111/j.1523-1739.2009.01243.x PMID: 19453655
Fitzherbert E, Struebig M, Morel A, Danielsen F, Bruhl C, Donald P, et al. How will oil palm expansion affect biodiversity? Trends Ecol Evol. 2008; 23(10):538-45. doi: 10.1016/j.tree.2008.06.012 PMID: 18775582
Nasi R. Biodiversity Planning Support Programme Integration of Biodiversity into National Forest Planning Programmes: The Case of Gabon. Bogor, Indonesia: CIFOR; 2001. Available: http://www.oceandocs.org/handle/1834/321
Maisels F, Strindberg S, Blake S, Wittemyer G, Hart J, Williamson EA, et al. Devastating Decline of Forest Elephants in Central Africa. PLoS ONE. 2013; 8(3):e59469. doi: 10.1371/journal.pone.0059469 PMID: 23469289
King LE, Douglas-Hamilton I, Vollrath F. Beehive fences as effective deterrents for crop-raiding elephants: field trials in northern Kenya. Afr J Ecol. 2011; 49(4):431-9.
Blanc J, Barnes R, Craig G, Dublin H, Thouless C, Douglas-Hamilton I, et al. African elephant status report 2007: an update from the African Elephant Database. 2007. Available: https://portals.iucn.org/library/efiles/documents/SSC-OP-033.pdf
Munshi-South J, Tchignoumba L, Brown J, Abbondanza N, Maldonado JE, Henderson A, et al. Physiological indicators of stress in African forest elephants (Loxodonta africana cyclotis) in relation to petroleum operations in Gabon, Central Africa. Divers Distrib. 2008; 14(6):995-1003.
Walker KL. Labor costs and crop protection from wildlife predation: the case of elephants in Gabon. Agric Econ. 2012; 43(1):61-73.
Fairet EMM. Vulnerability to crop raiding an interdisciplinary investigation in Loango National Park, Gabon. [PhD Thesis]. Durham University, UK; 2012. Available: http://etheses.dur.ac.uk/6399/1/EmilieFairet-Thesis-Finaldraft-08022013.pdf
Lahm SA. A nationwide survey of crop-raiding by elephants and other species in Gabon. Pachyderm. 1996; 21:69-77.
Tutin A, White L, Makanga-Missandzou A. The use by rain forest mammals of natural forest fragments in an equatorial African savanna. 1997; 11(5):1190-203.
Lahm SA. Ecology and Economics of Human/ Wildlife Interaction in Northeastern Gabon [PhD Thesis]. New York University, USA; 1993.
Angoué CA. Les changements sociaux dans la réserve de faune de la Lopé [Thèse de Doctorat]. Université Libre de Bruxelles, Belgique; 1999.
King LE, Soltis J, Douglas-Hamilton I, Savage A, Vollrath F, McComb K. Bee threat elicits alarm call in African elephants. PLoS One. 2010; 5(4):e10346. doi: 10.1371/journal.pone.0010346 PMID: 20436682
King LE, Lawrence A, Douglas-Hamilton I, Vollrath F. Beehive fence deters crop-raiding elephants. Afr J Ecol. 2009; 47(2):131-7.
Vollrath F, Douglas-Hamilton I. African bees to control African elephants. Naturwissenschaften. 2002; 89(11):508-11. PMID: 12451453
King LE. The interaction between the African elephant (Loxodonta africana africana) and the African honey bee (Apis mellifera scutellata) and its potential application as an elephant deterrent. [PhD Thesis]. University of Oxford, UK; 2010. Available: http://link.springer.com/article/10.1007/s00114-002-0375-2
Lee ME, Alonso A, Dallmeier F, Campbell P, Pauwels OS. The Gamba complex of protected areas: an illustration of Gabon's biodiversity. Bull Biol Soc Wash. 2006; 12:229-41.
Morgan BJ. Sacoglottis gabonensis - a keystone fruit for forest elephants in the Réserve de Faune du Petit Loango, Gabon. Afr J Ecol. 2009; 47(2):154-63.
White LJ. Vegetatin history and logging disturbance: Effects on rain forest mammals in the Lope reserve, Gabon (with special emphasis on elephants and apes) [PhD Thesis]. University of Edinburgh, UK; 1992.
Fabre Anguilet E, Nguyen BK, Bengone Ndong T, Haubruge E, Francis F. Meliponini and Apini in Africa (Apidae: Apinae): a review on the challenges and stakes bound to their diversity and their distribution. Biotechnol Agron Société Environ. 2015; 19(4):1-10.
Van Westendorp P. Beehive construction. Ministry of agriculture and land, British Colombia; 2006 p. 15. Available: http://www.agf.gov.bc.ca/apiculture/construction.pdf
Burton AC, Neilson E, Moreira D, Ladle A, Steenweg R, Fisher JT, et al. Wildlife camera trapping: a review and recommendations for linking surveys to ecological processes. J Appl Ecol. 2015; 52(3):675-85.
O'Connell AF, Nichols JD, Karanth KU. Camera Traps in Animal Ecology. Tokyo: Springer Japan; 2011. Available: http://link.springer.com/10.1007/978-4-431-99495-4
Woyke J. Diurnal and seasonal variation in defensive behavior of African bees Apis mellifera adansonii in Ghana. Apidologie. 1992; 23(4):311-22.
Delaplane KS, van der Steen J, Guzman-Novoa E. Standard methods for estimating strength parameters of Apis mellifera colonies. J Apic Res. 2013; 52(1):1-12.
Pearce AN, Huang ZY, Breed MD. Juvenile hormone and aggression in honey bees. J Insect Physiol. 2001; 47(11):1243-7. PMID: 12770175
Sagili R, Burgett D. Evaluating Honey Bee Colonies for Pollination: A Guide for Commercial Growers and Beekeepers. Oregon State University; 2011 p. 8. Report No.: 623. Available: http://www.sciencedirect.com/science/article/pii/0032395087903741
Hunt GJ. Flight and fight: A comparative view of the neurophysiology and genetics of honey bee defensive behavior. J Insect Physiol. 2007; 53(5):399-410. PMID: 17379239
Cosoroaba I, Chitimia L, Ilie M. The small hive beetle: A pest of honey bee colonies. Lucr Ştiinłifice Med Vet. 2008; XLI:437-42.
Seeley TD, Seeley RH, Akratanakul P. Colony Defense Strategies of the Honeybees in Thailand. Ecol Monogr. 1982; 52(1):43-63.
Chanialidis C. Bayesian mixture models for count data [PhD Thesis]. University of Glasgow; 2015. Available: http://theses.gla.ac.uk/id/eprint/6371
Zeileis A, Kleiber C, Jackman S. Regression models for count data in R. J Stat Softw. 2008; 27(8):1-25.
Bolker BM, Brooks ME, Clark CJ, Geange SW, Poulsen JR, Stevens MHH, et al. Generalized linear mixed models: a practical guide for ecology and evolution. Trends Ecol Evol. 2009 Mar; 24(3):127-35. doi: 10.1016/j.tree.2008.10.008 PMID: 19185386
Karidozo M, Osborn FV. Can bees deter elephants from raiding crops? An experiment in the communal lands of Zimbabwe. Pachyderm. 2005; 39:26-32.
Soltis J, King LE, Douglas-Hamilton I, Vollrath F, Savage A. African Elephant Alarm Calls Distinguish between Threats from Humans and Bees. PLoS ONE. 2014; 9(2):e89403. doi: 10.1371/journal.pone.0089403 PMID: 24586753
King LE, Douglas-Hamilton I, Vollrath F. African elephants run from the sound of disturbed bees. Curr Biol. 2007; 17(19):R832-3. PMID: 17925207
Hoare R. Lessons from 15 years of human - elephant conflict mitigation: Management considerations involving biological, physical and governance issues in Africa. Pachyderm. 2012; 51:60-74.
Smith ML, Ostwald MM, Seeley TD. Adaptive tuning of an extended phenotype: honeybees seasonally shift their honey storage to optimize male production. Anim Behav. 2015; 103:29-33.
Madden F. Creating Coexistence between Humans and Wildlife: Global Perspectives on Local Efforts to Address Human - Wildlife Conflict. Hum Dimens Wildl. 2004; 9(4):247-57.
Ngama S. Analyse quantitative de la consommation en viande de brousse en vue d'une gestion durable de la faune sauvage au Gabon. Tropicultura. 2015; NS:12-23.
Cariveau DP, Winfree R. Causes of variation in wild bee responses to anthropogenic drivers. Curr Opin Insect Sci. 2015; 10:104-9.
Ollerton J, Winfree R, Tarrant S. How many flowering plants are pollinated by animals? Oikos. 2011; 120(3):321-6.
Esper H, London T, Kanchwala Y. Diversified Farm Income, Market Facilitation, and their Impact on Children: An Exploration of Honey Care Africa. Impact Case Study No. 3. Ann Arbor: The William Davidson Institute; 2013. Available: http://64.9.215.13:8080/wdi/research/bop/projects/field-based-projects/Child%20Impact%20Case%20Study%203%20-%20Diversified%20Farm%20Income%20-%20Honey%20Care%20Africa.pdf
Pecault F. L'envenimation par les hyménoptères [Thèse de Docteur vétérinaire]. Université Paul-Sabatier de TOULOUSE, France; 2002. Available: http://oatao.univ-toulouse.fr/818/
Hodgson EW, Stanley CA, Roe AH, Downey D. Africanized honey bees. Pests fact sheet. Utah State University; 2010. Available: http://extension.usu.edu/files/publications/factsheet/africanized-bees.pdf