New traps for the capture of Aedes aegypti (Linnaeus) and Aedes albopictus (Skuse) (Diptera: Culicidae) eggs and adults

PLoS Negl Trop Dis. 2021 Apr 16;15(4):e0008813. doi: 10.1371/journal.pntd.0008813. eCollection 2021 Apr.

Abstract

The control of arboviruses carried by Aedes aegypti (Linnaeus) and Aedes albopictus (Skuse) can be performed with tools that monitor and reduce the circulation of these vectors. Therefore, the efficiency of four types of traps in capturing A. aegypti and A. albopictus eggs and adults, with the biological product Vectobac WG, was evaluated in the field. For this, 20 traps were installed in two locations, which were in the South (Londrina, Paraná) and North (Manaus, Amazonas) Regions of Brazil, from March to April 2017 and January to February 2018, respectively. The UELtrap-E (standard trap) and UELtrap-EA traps captured A. aegypti and A. albopictus eggs: 1703/1866 eggs in Londrina, and 10268/2149 eggs in Manaus, respectively, and presented high ovitraps positivity index (OPI) values (averages: 100%/100% in Londrina, and 100%/96% in Manaus, respectively); and high egg density index (EDI) values (averages: 68/75 in Londrina, and 411/89 in Manaus, respectively), so they had statistically superior efficiency to that of the CRtrap-E and CRtrap-EA traps in both regions, that captured less eggs and adults: 96/69 eggs in Londrina, and 1091/510 eggs in Manaus, respectively. Also presented lower OPI values (averages: 28%/4% in Londrina, and 88%/60% in Manaus, respectively); and lower EDI values (averages: 10.5/9 in Londrina, and 47/30 in Manaus, respectively). The capture ratios of Aedes adults in the UELtrap-EA and CRtrap-EA traps in Londrina and Manaus were 53.3%/29.5% and 0%/9.8%, respectively. UELtrap-EA can be adopted as efficient tool for Aedes monitoring due to their high sensitivity, low cost and ease of use.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Aedes / physiology*
  • Animals
  • Brazil
  • Mosquito Control / instrumentation*
  • Mosquito Control / methods
  • Ovum*
  • Population Density

Grants and funding

The authors thank the FAPEAM (Amazonas State Research Support Foundation) to W.R.S, CNPq (National Council for Scientific and Technological Development) Process 440385/2016-4, which was approved by the MCTIC/FNDCT-CNPq/MEC Call -CAPES/MS-Decit/N° 14/2016 - Prevention and fight against the Zika virus to M. A. Navarro-Silva, and the Coordination for the Improvement of Higher Education Personnel (CAPES) (Financing Code 001) for the financial support to K. R. S. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.