期刊
AMERICAN NATURALIST
卷 196, 期 3, 页码 E61-E70出版社
UNIV CHICAGO PRESS
DOI: 10.1086/710005
关键词
malaria; vector management; community ecology; biodiversity-ecosystem function; dilution effect; amplification effect
资金
- Natural Sciences and Engineering Research Council of Canada
Recent years have seen significant progress in understanding the impact of host community assemblage on disease risk, yet diversity in disease vectors has rarely been investigated. Using published malaria and mosquito surveys from Kenya, we analyzed the relationship between malaria prevalence and multiple axes of mosquito diversity: abundance, species richness, and composition. We found a net amplification of malaria prevalence by vector species richness, a result of a strong direct positive association between richness and prevalence alongside a weak indirect negative association between the two, mediated through mosquito community composition. One plausible explanation of these patterns is species niche complementarity, whereby less competent vector species contribute to disease transmission by filling spatial or temporal gaps in transmission left by dominant vectors. A greater understanding of vector community assemblage and function, as well as any interactions between host and vector biodiversity, could offer insights to both fundamental and applied ecology.
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