Ecological correlates of risk and incidence of West Nile virus in the United States

被引：152

作者：

Allan, Brian F. ^{[1
]}

Langerhans, R. Brian ^{[2
]}

Ryberg, Wade A. ^{[1
]}

Landesman, William J. ^{[3
]}

Griffin, Nicholas W. ^{[1
]}

Katz, Rachael S. ^{[4
]}

Oberle, Brad J. ^{[1
]}

Schutzenhofer, Michele R. ^{[5
]}

Smyth, Kristina N. ^{[6
]}

de St. Maurice, Annabelle ^{[7
]}

Clark, Larry ^{[8
]}

Crooks, Kevin R. ^{[9
]}

Hernandez, Daniel E. ^{[10
]}

McLean, Robert G. ^{[8
]}

Ostfeld, Richard S. ^{[11
]}

Chase, Jonathan M. ^{[1
]}

机构：

[1] Washington Univ, Dept Biol, St Louis, MO 63130 USA

[2] Harvard Univ, Dept Organism & Evolutionary Biol, Museum Comparat Zool, Cambridge, MA 02138 USA

[3] Rutgers State Univ, Dept Ecol Evolut & Nat Resources, New Brunswick, NJ 08901 USA

[4] N Carolina State Univ, Dept Entomol, Raleigh, NC 27607 USA

[5] McKendree Univ, Div Sci & Math, Lebanon, IL 62254 USA

[6] St Louis Univ, Dept Biol, St Louis, MO 63103 USA

[7] Univ Rochester, Sch Med & Dent, Rochester, NY 14642 USA

[8] USDA, Natl Wildlife Res Ctr, Ft Collins, CO 80521 USA

[9] Colorado State Univ, Dept Fishery & Wildlife Biol, Ft Collins, CO 80523 USA

[10] Richard Stockton Coll New Jersey, Div Nat Sci & Math, Pomona, NJ 08240 USA

[11] Cary Inst Ecosyst Studies, Millbrook, NY 12545 USA

来源：

OECOLOGIA | 2009年 / 158卷 / 04期

关键词：

Dilution effect; Disease ecology; Emerging infectious diseases; Ecosystem service; INFECTIOUS-DISEASE; VECTOR COMPETENCE; SPECIES-DIVERSITY; LAND-USE; BIODIVERSITY; MOSQUITOS; CULEX; HOST; CULICIDAE; DIPTERA;

D O I：

10.1007/s00442-008-1169-9

中图分类号：

Q14 [生态学（生物生态学）];

学科分类号：

071012 ; 0713 ;

摘要：

West Nile virus, which was recently introduced to North America, is a mosquito-borne pathogen that infects a wide range of vertebrate hosts, including humans. Several species of birds appear to be the primary reservoir hosts, whereas other bird species, as well as other vertebrate species, can be infected but are less competent reservoirs. One hypothesis regarding the transmission dynamics of West Nile virus suggests that high bird diversity reduces West Nile virus transmission because mosquito blood-meals are distributed across a wide range of bird species, many of which have low reservoir competence. One mechanism by which this hypothesis can operate is that high-diversity bird communities might have lower community-competence, defined as the sum of the product of each species' abundance and its reservoir competence index value. Additional hypotheses posit that West Nile virus transmission will be reduced when either: (1) abundance of mosquito vectors is low; or (2) human population density is low. We assessed these hypotheses at two spatial scales: a regional scale near Saint Louis, MO, and a national scale (continental USA). We found that prevalence of West Nile virus infection in mosquito vectors and in humans increased with decreasing bird diversity and with increasing reservoir competence of the bird community. Our results suggest that conservation of avian diversity might help ameliorate the current West Nile virus epidemic in the USA

引用

页码：699 / 708

页数：10

共 65 条

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