The Status of Susceptibility of Japanese Encephalitis Vectors to Insecticides in Endemic Areas of Northern Districts of West Bengal, India
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- Saha Pabitra
- Protozoology Unit, Department of Microbiology, Calcutta School of Tropical Medicine Department of Zoology, APC Roy Government College
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- Ballav Sudeep
- Protozoology Unit, Department of Microbiology, Calcutta School of Tropical Medicine
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- Chatterjee Moytrey
- Protozoology Unit, Department of Microbiology, Calcutta School of Tropical Medicine
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- Ganguly Swagata
- Department of Microbiology, NRS Medical College
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- Sarker Mayukh
- Department of Zoology, APC Roy Government College
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- Biswas Asit Kumar
- Department of Health & Family Welfare
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- Pramanik Tulsi
- Department of Health & Family Welfare
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- Basu Nandita
- Calcutta School of Tropical Medicine
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- Maji Ardhendu Kumar
- Protozoology Unit, Department of Microbiology, Calcutta School of Tropical Medicine
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抄録
<p>Emergence and spread of resistance among vectors toward different insecticides is a serious problem for the Japanese encephalitis (JE) control program. Regularly monitoring the status of susceptibility of vector species to insecticides is important for formulating proper vector control measures. In this study, we studied the susceptibility status of major JE vectors from northern West Bengal, toward 4% DDT, 0.05% deltamethrin, and 5% malathion. Two- to three-day-old unfed female mosquitoes were subjected to a susceptibility bioassay using a World Health Organization kit. Corrected mortality (CM) and knockdown times were estimated. Culex tritaeniorhynchus, Cx. vishnui, Cx. pseudovishnui, and Cx. gelidus were the major JE vectors present in the study areas. All 4 vector species were highly tolerant to DDT with CM < 90%. Cx. tritaeniorhynchus, Cx. vishnui, Cx. pseudovishnui, and Cx. gelidus were tolerant to deltamethrin with CM < 90%, except for Cx. gelidus of Darjeeling and Malbazar. At most of the study sites, malathion was effective against Cx. vishnui, Cx. pseudovishnui, and Cx. gelidus with CM ≥ 98%. In contrast, Cx. tritaeniorhynchus was tolerant to malathion in all study areas. Predominant JE vector populations were highly tolerant to all 3 analyzed insecticides, except deltamethrin for Cx. gelidus and malathion for Cx. vishnui, Cx. pseudovishnui, and Cx. gelidus. The results of this study may be useful for better planning and implementing a JE control strategy.</p>
収録刊行物
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- Japanese Journal of Infectious Diseases
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Japanese Journal of Infectious Diseases 71 (2), 91-98, 2018
国立感染症研究所 Japanese Journal of Infectious Diseases 編集委員会
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詳細情報 詳細情報について
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- CRID
- 1390282681216681984
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- NII論文ID
- 130006517094
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- NII書誌ID
- AA1132885X
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- ISSN
- 18842836
- 13446304
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- NDL書誌ID
- 028915462
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- PubMed
- 29279446
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- Crossref
- PubMed
- CiNii Articles
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- 使用不可