Entomological survey for identification of Aedes larval breeding sites and their distribution in Chattogram, Bangladesh

Rahman, Md. Sahidur; Faruk, Md. Omar; Tanjila, Sumiya; Sabbir, Nur Mohammad; Haider, Najmul; Chowdhury, Sharmin

Abstract

Background
Studying the characteristics of Aedes mosquito habitats is essential to control the mosquito population. The objective of this study was to identify the breeding sites of Aedes larvae and their distribution in Chattogram, Bangladesh. We conducted an entomological survey in 12 different sub-districts (Thana) under Chattogram City, during the late monsoon (August to November) 2019. The presence of different wet containers along with their characteristics and immature mosquitoes was recorded in field survey data form. Larvae and/or pupae were collected and brought to the laboratory for identification.

Results
Different indices like house index, container index, and the Breteau index were estimated. The multiple logistic regression analysis was applied to identify habitats that were more likely to be positive for Aedes larvae/pupae. A total of 704 wet containers of 37 different types from 216 properties were examined, where 52 (7.39%) were positive for Aedes larvae or pupae. Tire, plastic buckets, plastic drums, and coconut shells were the most prevalent container types. The plastic group possessed the highest container productivity (50%) whereas the vehicle and machinery group was found as most efficient (1.83) in terms of immature Aedes production. Among the total positive properties, 8% were infested with Aedes aegypti, 2% with Aedes albopictus, and 1% contained both species Ae. aegypti and A. albopictus. The overall house index was 17.35%, the container index was 7%, and the Breteau index was 24.49. Containers in multistoried houses had significantly lower positivity compared to independent houses. Binary logistic regression represented that containers having shade were 6.7 times more likely to be positive than the containers without shade (p< 0.01).

Conclusions
These findings might assist the authorities to identify the properties, containers, and geographical areas with different degrees of risk for mosquito control interventions to prevent dengue and other Aedes-borne disease transmissions.

Citation

Rahman, M. S., Faruk, M. O., Tanjila, S., Sabbir, N. M., Haider, N., & Chowdhury, S. (2021). Entomological survey for identification of Aedes larval breeding sites and their distribution in Chattogram, Bangladesh. Beni-Suef University Journal of Basic and Applied Sciences, 10(1), 1-11. https://doi.org/10.1186/s43088-021-00122-x

• Journal Article Type: Article
• Acceptance Date: May 3, 2021
• Online Publication Date: May 13, 2021
• Publication Date: May 13, 2021
• Deposit Date: May 17, 2021
• Journal: Beni-Suef University Journal of Basic and Applied Sciences
• Print ISSN: 2314-8543
• Electronic ISSN: 2314-8543
• Publisher: SpringerOpen
• Peer Reviewed: Peer Reviewed
• Volume: 10
• Issue: 1
• Pages: 1-11
• DOI: https://doi.org/10.1186/s43088-021-00122-x
• Public URL: https://rvc-repository.worktribe.com/output/1548912
• Publisher URL: https://bjbas.springeropen.com/articles/10.1186/s43088-021-00122-x
• Additional Information: Received: 4 February 2021; Accepted: 3 May 2021; First Online: 13 May 2021; This study was carried out in accordance with the recommendations of the Chattogram Veterinary and Animal Sciences University’s Ethics Committee. However, this study was waived for written approval and consent as it did not involve human participants, human data or human tissues. : Not applicable; : The authors declare that they have no competing interests.