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Automated classification of mixed populations of Aedes aegypti and Culex quinquefasciatus mosquitoes under field conditions.
Njaime, Fábio Castelo Branco Fontes Paes; Máspero, Renato Cesar; Leandro, André de Souza; Maciel-de-Freitas, Rafael.
Affiliation
  • Njaime FCBFP; Programa de Pós-graduação em Vigilância e Controle de Vetores, Instituto Oswaldo Cruz, Fiocruz - IOC, Rio de Janeiro, RJ, Brazil.
  • Máspero RC; Programa de Pós-graduação em Vigilância e Controle de Vetores, Instituto Oswaldo Cruz, Fiocruz - IOC, Rio de Janeiro, RJ, Brazil.
  • Leandro AS; Centro de Controle de Zoonoses da Secretaria Municipal de Saúde de Foz do Iguaçu, Paraná, Brazil.
  • Maciel-de-Freitas R; Laboratório de Mosquitos Transmissores de Hematozoários, Instituto Oswaldo Cruz, Fiocruz-IOC, Rio de Janeiro, RJ, Brasil.
Parasit Vectors ; 17(1): 399, 2024 Sep 19.
Article in En | MEDLINE | ID: mdl-39300572
ABSTRACT

BACKGROUND:

The recent rise in the transmission of mosquito-borne diseases such as dengue virus (DENV), Zika (ZIKV), chikungunya (CHIKV), Oropouche (OROV), and West Nile (WNV) is a major concern for public health managers worldwide. Emerging technologies for automated remote mosquito classification can be supplemented to improve surveillance systems and provide valuable information regarding mosquito vector catches in real time.

METHODS:

We coupled an optical sensor to the entrance of a standard mosquito suction trap (BG-Mosquitaire) to record 9151 insect flights in two Brazilian cities Rio de Janeiro and Brasilia. The traps and sensors remained in the field for approximately 1 year. A total of 1383 mosquito flights were recorded from the target species Aedes aegypti and Culex quinquefasciatus. Mosquito classification was based on previous models developed and trained using European populations of Aedes albopictus and Culex pipiens.

RESULTS:

The VECTRACK sensor was able to discriminate the target mosquitoes (Aedes and Culex genera) from non-target insects with an accuracy of 99.8%. Considering only mosquito vectors, the classification between Aedes and Culex achieved an accuracy of 93.7%. The sex classification worked better for Cx. quinquefasciatus (accuracy 95%; specificity 95.3%) than for Ae. aegypti (accuracy 92.1%; specificity 88.4%).

CONCLUSIONS:

The data reported herein show high accuracy, sensitivity, specificity and precision of an automated optical sensor in classifying target mosquito species, genus and sex. Similar results were obtained in two different Brazilian cities, suggesting high reliability of our findings. Surprisingly, the model developed for European populations of Ae. albopictus worked well for Brazilian Ae. aegypti populations, and the model developed and trained for Cx. pipiens was able to classify Brazilian Cx. quinquefasciatus populations. Our findings suggest this optical sensor can be integrated into mosquito surveillance methods and generate accurate automatic real-time monitoring of medically relevant mosquito species.
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Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: Aedes / Culex / Mosquito Vectors Limits: Animals Country/Region as subject: America do sul / Brasil Language: En Journal: Parasit Vectors Year: 2024 Document type: Article Affiliation country: Brazil Country of publication: United kingdom

Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: Aedes / Culex / Mosquito Vectors Limits: Animals Country/Region as subject: America do sul / Brasil Language: En Journal: Parasit Vectors Year: 2024 Document type: Article Affiliation country: Brazil Country of publication: United kingdom