Entomological Surveillance of Aedes Mosquitoes: Comparison of Different Collection Methods in an Endemic Area in RIO de Janeiro, Brazil
- PMID: 35878126
- PMCID: PMC9324765
- DOI: 10.3390/tropicalmed7070114
Entomological Surveillance of Aedes Mosquitoes: Comparison of Different Collection Methods in an Endemic Area in RIO de Janeiro, Brazil
Abstract
Using collection methods for Aedes adults as surveillance tools provides reliable indices and arbovirus detection possibilities. This study compared the effectiveness of different methods for collecting Ae. aegypti and Ae. albopictus and detecting arboviruses circulating in field-caught female specimens. Collection sites were defined in urban, peri-urban, and rural landscapes in two Brazilian cities. Collections were performed using Adultraps (ADT), BG-Sentinel (BGS), CDC-like traps (CDC), and indoor (ASP-I) and outdoor (ASP-O) aspiration during the rainy and dry seasons of 2015 and 2016. Generalized linear mixed models were used to model the effectiveness of each collection method. A total of 434 Ae. aegypti and 393 Ae. albopictus were collected. In total, 64 Ae. aegypti and sixteen Ae. albopictus female pools were tested for DENV, CHIKV, ZIKV, or YFV; none were positive. Positivity and density were linear at low densities (<1 specimen); thereafter, the relationship became non-linear. For Ae. aegypti, ADT and CDC were less effective, and ASP-I and ASP-O were as effective as BGS. For Ae. albopictus, all collection methods were less effective than BGS. This study highlights the need for an integrated surveillance method as an effective tool for monitoring Aedes vectors.
Keywords: Aedes; BG-Sentinel; CDC light trap; adultrap; backpack aspiration; entomological surveillance; mosquito vectors; trap comparison.
Conflict of interest statement
The authors declare no conflict of interest. The funders had no role in the design of the study; in the collection, analyses, or interpretation of data; in the writing of the manuscript; or in the decision to publish the results.
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Grants and funding
- Fellowship/Coordenação de Aperfeicoamento de Pessoal de Nível Superior
- E-26/102.241/2013/Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro
- 401542/2015-7/Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro
- E-26/010.001610/2016/Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro
- E-26/201.840/2017 - fellowship/Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro
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