Comparison Between Larval Survey Index and Positive Ovitrap Index in the Evaluation of Populations of () (Linnaeus, 1762) North of Paraná, Brazil
Aedes ( Stegomyia ) aegypti (Linnaeus, 1762) is one of the world’s most widely distributed mosquitoes and is the vector of the dengue virus, one of the most important reemerging diseases. Besides dengue, A. aegypti can also transmit urban yellow fever, chikungunya, and Zika virus, making it of great...
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doaj-fe78cf2d1b5446cc864389d3f004a60d2020-11-25T03:46:31ZengSAGE PublishingEnvironmental Health Insights1178-63022020-01-011410.1177/1178630219886570Comparison Between Larval Survey Index and Positive Ovitrap Index in the Evaluation of Populations of () (Linnaeus, 1762) North of Paraná, BrazilKauani Larissa Campana Nascimento0João Fernando Marques da Silva1João Antonio Cyrino Zequi2José Lopes3Programa de Pós-graduação em Ciências Biológicas, Departamento de Biologia Animal e Vegetal, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, BrazilDepartamento de Biologia Animal e Vegetal, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, BrazilDepartamento de Biologia Animal e Vegetal, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, BrazilDepartamento de Biologia Animal e Vegetal, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, BrazilAedes ( Stegomyia ) aegypti (Linnaeus, 1762) is one of the world’s most widely distributed mosquitoes and is the vector of the dengue virus, one of the most important reemerging diseases. Besides dengue, A. aegypti can also transmit urban yellow fever, chikungunya, and Zika virus, making it of great medical importance. Thus, it is of extreme importance to find reliable methods to evaluate the presence of A. aegypti in urban areas. In Brazil, rapid index surveys of Aedes aegypti by means of larval survey (LIRAa) is the official method to estimate the Breteau (BI) and property infestation (PII) indexes, which indicates how many infested containers with larvae of A. aegypti were found by the total number of properties surveyed and the proportion of houses infested, respectively. As the LIRAa requires access to private residences and trained personal to find breeding sites and do not reveal the mosquito’s presence when in low density, it has not demonstrated efficacy in determining the presence of A. aegypti . To evaluate an alternative method, the LIRAa method was compared with an oviposition trap, made with hay infusion and a hardboard pallet, to evaluate the BI and the PII. The 2 methods were carried out simultaneously through 4 surveys, sampling 60 homes per survey. To evaluate the best configuration of ovitraps for surveillance of A. aegypti , the ovitraps were installed in intradomicile and peridomicile areas, with 1 to 5 traps per residence and with 1 to 3 pallets per trap, and these different configurations were compared using the positive ovitrap index (POI) and egg density index (EDI). The ovitraps showed greater sensitivity for detecting the presence of A. aegypti , with a BI of 72.5% and PII of 54.2%, whereas the LIRAa revealed only 2.1% for the BI and 1.3% for the PII. Therefore, the use of sentinel traps can provide information in a more rapid and precise manner. As there were no differences in the ovitraps distributions patterns, the ovitraps can be installed in the peridomicile area, with 2 traps per surveillance point and 1 pallet per trap, making their installation easier and more cost-efficient, facilitating the work of health agents in future surveillances complementing LIRAa’s actions for efficient monitoring.https://doi.org/10.1177/1178630219886570 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Kauani Larissa Campana Nascimento João Fernando Marques da Silva João Antonio Cyrino Zequi José Lopes |
spellingShingle |
Kauani Larissa Campana Nascimento João Fernando Marques da Silva João Antonio Cyrino Zequi José Lopes Comparison Between Larval Survey Index and Positive Ovitrap Index in the Evaluation of Populations of () (Linnaeus, 1762) North of Paraná, Brazil Environmental Health Insights |
author_facet |
Kauani Larissa Campana Nascimento João Fernando Marques da Silva João Antonio Cyrino Zequi José Lopes |
author_sort |
Kauani Larissa Campana Nascimento |
title |
Comparison Between Larval Survey Index and Positive Ovitrap Index in the Evaluation of Populations of () (Linnaeus, 1762) North of Paraná, Brazil |
title_short |
Comparison Between Larval Survey Index and Positive Ovitrap Index in the Evaluation of Populations of () (Linnaeus, 1762) North of Paraná, Brazil |
title_full |
Comparison Between Larval Survey Index and Positive Ovitrap Index in the Evaluation of Populations of () (Linnaeus, 1762) North of Paraná, Brazil |
title_fullStr |
Comparison Between Larval Survey Index and Positive Ovitrap Index in the Evaluation of Populations of () (Linnaeus, 1762) North of Paraná, Brazil |
title_full_unstemmed |
Comparison Between Larval Survey Index and Positive Ovitrap Index in the Evaluation of Populations of () (Linnaeus, 1762) North of Paraná, Brazil |
title_sort |
comparison between larval survey index and positive ovitrap index in the evaluation of populations of () (linnaeus, 1762) north of paraná, brazil |
publisher |
SAGE Publishing |
series |
Environmental Health Insights |
issn |
1178-6302 |
publishDate |
2020-01-01 |
description |
Aedes ( Stegomyia ) aegypti (Linnaeus, 1762) is one of the world’s most widely distributed mosquitoes and is the vector of the dengue virus, one of the most important reemerging diseases. Besides dengue, A. aegypti can also transmit urban yellow fever, chikungunya, and Zika virus, making it of great medical importance. Thus, it is of extreme importance to find reliable methods to evaluate the presence of A. aegypti in urban areas. In Brazil, rapid index surveys of Aedes aegypti by means of larval survey (LIRAa) is the official method to estimate the Breteau (BI) and property infestation (PII) indexes, which indicates how many infested containers with larvae of A. aegypti were found by the total number of properties surveyed and the proportion of houses infested, respectively. As the LIRAa requires access to private residences and trained personal to find breeding sites and do not reveal the mosquito’s presence when in low density, it has not demonstrated efficacy in determining the presence of A. aegypti . To evaluate an alternative method, the LIRAa method was compared with an oviposition trap, made with hay infusion and a hardboard pallet, to evaluate the BI and the PII. The 2 methods were carried out simultaneously through 4 surveys, sampling 60 homes per survey. To evaluate the best configuration of ovitraps for surveillance of A. aegypti , the ovitraps were installed in intradomicile and peridomicile areas, with 1 to 5 traps per residence and with 1 to 3 pallets per trap, and these different configurations were compared using the positive ovitrap index (POI) and egg density index (EDI). The ovitraps showed greater sensitivity for detecting the presence of A. aegypti , with a BI of 72.5% and PII of 54.2%, whereas the LIRAa revealed only 2.1% for the BI and 1.3% for the PII. Therefore, the use of sentinel traps can provide information in a more rapid and precise manner. As there were no differences in the ovitraps distributions patterns, the ovitraps can be installed in the peridomicile area, with 2 traps per surveillance point and 1 pallet per trap, making their installation easier and more cost-efficient, facilitating the work of health agents in future surveillances complementing LIRAa’s actions for efficient monitoring. |
url |
https://doi.org/10.1177/1178630219886570 |
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