Large herbivore loss has complex effects on mosquito ecology and vector-borne disease risk

被引:12
作者
Tchouassi, David P. [1 ]
Torto, Baldwyn [1 ]
Sang, Rosemary [1 ]
Riginos, Corinna [2 ]
Ezenwa, Vanessa O. [3 ,4 ]
机构
[1] Int Ctr Insect Physiol & Ecol, POB 30772-00100, Nairobi, Kenya
[2] Nature Conservancy, Lander, WY USA
[3] Univ Georgia, Coll Vet Med, Odum Sch Ecol, Athens, GA 30602 USA
[4] Univ Georgia, Coll Vet Med, Dept Infect Dis, Athens, GA 30602 USA
基金
美国国家科学基金会;
关键词
arbovirus; biodiversity; mosquito‐ borne disease; vector; vectorial capacity; RIFT-VALLEY FEVER; WEST-NILE-VIRUS; BIODIVERSITY LOSS; AFRICAN BUFFALO; EGYPT; 1977-78; DIVERSITY; TRANSMISSION; MALARIA; CULICIDAE; INFECTION;
D O I
10.1111/tbed.13918
中图分类号
R51 [传染病];
学科分类号
100401 ;
摘要
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.
引用
收藏
页码:2503 / 2513
页数:11
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