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Mosquito population dynamics during the construction of Three Gorges Dam in Yangtze River, China

Mosquito population dynamics during the construction of Three Gorges Dam in Yangtze River, China
Mosquito population dynamics during the construction of Three Gorges Dam in Yangtze River, China

Background: Mosquitoes are responsible for spreading many diseases and their populations are susceptible to environmental changes. The ecosystems in the Three Gorges Region were probably altered because of changes to the environment during the construction of the Three Gorges Dam (TGD), the world's largest hydroelectric dam by generating capacity. Methods: We selected three sites at which to monitor the mosquitoes from 1997 to 2009. We captured adult mosquitoes with battery-powered aspirators fortnightly between May and September of each year in dwellings and sheds. We identified the mosquito species, and examined changes in the species density during the TGD construction. We monitored changes in the species and density of mosquitoes in this area for 13 years during the TGD construction and collected information that could be used to support the control and prevention of mosquito-borne infections. Results: We found that the mosquito species composition around the residential areas remained the same, and the density changed gradually during the TGD construction. The changes in the populations tended to be consistent over the years, and the densities were highest in July, and were between 3 and 5 times greater in the sheds than in the dwellings. Conclusions: The mosquito species and populations remained stable during the construction of the TGD. The mosquito density may have increased as the reservoir filled, and may have decreased during the clean-up work. Clean-up work may be an effective way to control mosquitoes and prevent mosquito-borne diseases.

Clean-up work, Mosquito surveillance, Reservoir water work, Three Gorges Dam
0001-706X
251-256
Guo, Yuhong
b07c5ccc-a15d-454d-bf97-eb65771f58aa
Lai, Sheng Jie
b57a5fe8-cfb6-4fa7-b414-a98bb891b001
Zhang, Jing
cf5f9707-edf5-4ec0-8d2b-73e8c273eaad
Liu, Qiyong
81cc75e6-95dd-49eb-b4e4-9ef5ab9104e7
Zhang, Huaiqing
41748b18-f575-421e-940d-038028b09f23
Ren, Zhoupeng
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Mao, Deqiang
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Luo, Chao
a4f621a4-1dfc-4aeb-ba21-6f5f0348a5ae
He, Yuanyuan
ac49773e-9d72-433f-a21d-93e0b6ab7ed5
Wu, Haixia
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Li, Guichang
8921a191-a986-4f78-a31e-5404e67282bf
Ren, Dongsheng
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Liu, Xiaobo
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Chang, Zhaorui
c75ddb91-c5b5-4e93-a9d4-8e708a35b07a
Guo, Yuhong
b07c5ccc-a15d-454d-bf97-eb65771f58aa
Lai, Sheng Jie
b57a5fe8-cfb6-4fa7-b414-a98bb891b001
Zhang, Jing
cf5f9707-edf5-4ec0-8d2b-73e8c273eaad
Liu, Qiyong
81cc75e6-95dd-49eb-b4e4-9ef5ab9104e7
Zhang, Huaiqing
41748b18-f575-421e-940d-038028b09f23
Ren, Zhoupeng
6a7276d2-8e4d-4189-9e84-59168c1ee7b4
Mao, Deqiang
9172e9c4-5ce0-45ba-af2e-c19ddde47f9a
Luo, Chao
a4f621a4-1dfc-4aeb-ba21-6f5f0348a5ae
He, Yuanyuan
ac49773e-9d72-433f-a21d-93e0b6ab7ed5
Wu, Haixia
60e2fe29-7abe-4629-ab9f-94bd634850ec
Li, Guichang
8921a191-a986-4f78-a31e-5404e67282bf
Ren, Dongsheng
0ab2bdb7-7d91-44bd-8ea4-ce0b92bd4568
Liu, Xiaobo
ee7121f7-7534-4d2f-836f-ee237066e535
Chang, Zhaorui
c75ddb91-c5b5-4e93-a9d4-8e708a35b07a

Guo, Yuhong, Lai, Sheng Jie, Zhang, Jing, Liu, Qiyong, Zhang, Huaiqing, Ren, Zhoupeng, Mao, Deqiang, Luo, Chao, He, Yuanyuan, Wu, Haixia, Li, Guichang, Ren, Dongsheng, Liu, Xiaobo and Chang, Zhaorui (2018) Mosquito population dynamics during the construction of Three Gorges Dam in Yangtze River, China. Acta Tropica, 182, 251-256. (doi:10.1016/j.actatropica.2018.03.008).

Record type: Article

Abstract

Background: Mosquitoes are responsible for spreading many diseases and their populations are susceptible to environmental changes. The ecosystems in the Three Gorges Region were probably altered because of changes to the environment during the construction of the Three Gorges Dam (TGD), the world's largest hydroelectric dam by generating capacity. Methods: We selected three sites at which to monitor the mosquitoes from 1997 to 2009. We captured adult mosquitoes with battery-powered aspirators fortnightly between May and September of each year in dwellings and sheds. We identified the mosquito species, and examined changes in the species density during the TGD construction. We monitored changes in the species and density of mosquitoes in this area for 13 years during the TGD construction and collected information that could be used to support the control and prevention of mosquito-borne infections. Results: We found that the mosquito species composition around the residential areas remained the same, and the density changed gradually during the TGD construction. The changes in the populations tended to be consistent over the years, and the densities were highest in July, and were between 3 and 5 times greater in the sheds than in the dwellings. Conclusions: The mosquito species and populations remained stable during the construction of the TGD. The mosquito density may have increased as the reservoir filled, and may have decreased during the clean-up work. Clean-up work may be an effective way to control mosquitoes and prevent mosquito-borne diseases.

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Accepted/In Press date: 10 March 2018
e-pub ahead of print date: 12 March 2018
Published date: 1 June 2018
Keywords: Clean-up work, Mosquito surveillance, Reservoir water work, Three Gorges Dam

Identifiers

Local EPrints ID: 420060
URI: https://eprints.soton.ac.uk/id/eprint/420060
ISSN: 0001-706X
PURE UUID: 30d65fcf-0518-494c-952e-614159cb9b3b
ORCID for Sheng Jie Lai: ORCID iD orcid.org/0000-0001-9781-8148

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Date deposited: 25 Apr 2018 16:31
Last modified: 20 Jul 2019 04:23

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Contributors

Author: Yuhong Guo
Author: Sheng Jie Lai ORCID iD
Author: Jing Zhang
Author: Qiyong Liu
Author: Huaiqing Zhang
Author: Zhoupeng Ren
Author: Deqiang Mao
Author: Chao Luo
Author: Yuanyuan He
Author: Haixia Wu
Author: Guichang Li
Author: Dongsheng Ren
Author: Xiaobo Liu
Author: Zhaorui Chang

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