期刊
TRANSBOUNDARY AND EMERGING DISEASES
卷 68, 期 4, 页码 2503-2513出版社
WILEY
DOI: 10.1111/tbed.13918
关键词
arbovirus; biodiversity; mosquito‐ borne disease; vector; vectorial capacity
资金
- United States National Science Foundation (NSF) CAREER Award [IOS-1101836]
- University of Georgia
- NSF Long-Term Research in Environmental Biology [12-56004, 19-31224]
- UK's Foreign, Commonwealth & Development Office (FCDO)
- Swedish International Development Cooperation Agency (Sida)
- Swiss Agency for Development and Cooperation (SDC)
- Federal Democratic Republic of Ethiopia
- Government of the Republic of Kenya
Loss of biodiversity can affect the transmission of infectious diseases by altering host and vector abundance or by influencing host and vector behavior. Research showed that large herbivore loss can impact mosquito vector abundance and feeding behavior, leading to counterintuitive outcomes for human disease risk, such as the potential for disease transmission doubling in the presence of large herbivores.
Loss of biodiversity can affect transmission of infectious diseases in at least two ways: by altering host and vector abundance or by influencing host and vector behaviour. We used a large herbivore exclusion experiment to investigate the effects of wildlife loss on the abundance and feeding behaviour of mosquito vectors and to explore consequences for vector-borne disease transmission. Large herbivore loss affected both mosquito abundance and blood-feeding behaviour. For Aedes mcintoshi, the dominant mosquito species in our study and a primary vector of Rift Valley fever virus (RVFV), abundance decreased with large herbivore loss, while blood feeding on humans increased. Despite an elevated human biting rate in the absence of large herbivores, we estimated that the potential for RVFV transmission to humans doubles in the presence of large herbivores. These results demonstrate that multiple effects of biodiversity loss on vectors can lead to counterintuitive outcomes for human disease risk.
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