|Table of Contents|

The Effect of Vector Feeding Preference and Host Community Composition on the Risk of Vector-Borne Disease(PDF)

《南京师大学报（自然科学版）》[ISSN:1001-4616/CN:32-1239/N]

Issue:
2022年02期
Page:
72-80
Research Field:
·生态学·
Publishing date:

Info

Title:
The Effect of Vector Feeding Preference and Host Community Composition on the Risk of Vector-Borne Disease
Author(s):
Chen Lifan1; Chen Shiliang2; Wang Hongjie1; Song Ruyi1
(1.School of Arts and Sciences,Shanghai University of Medicine and Health Sciences,Shanghai 201318,China)(2.Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering,School of Life Sciences,Fudan University,Shanghai 200433
Keywords:
biodiversity; dilution effect; compartment model; basic reproduction number
PACS:
Q141
DOI:
10.3969/j.issn.1001-4616.2022.02.009
Abstract:
A two-host-vector-borne infectious disease model was constructed to explore how vector feeding preferences and changes in host community composition affect disease risk. The results showed that the changes of host community composition may lead to dilution effect,amplification effect or no effect on the disease risk,which mainly depend on the feeding preference and host competence(the ability to obtain and transmit disease). When the vector has no feeding preference and the two hosts have the same competence,R0 is a constant. When the vector has no feeding preference but the competence of the two hosts is different,or the preferred host is just the low competence one,R0 is monotonic. If the proportion of high competence host increases,amplification effect will occur,otherwise,dilution effect will occur. When there is no difference in the competence of the two hosts but the vector has feeding preference,or the preferred host is just the high competence one,R0 always increases first and then decreases with x,which can lead to both amplification effect and dilution effect.

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