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Fig. 2 | Parasites & Vectors

Fig. 2

From: Monthly biological larviciding associated with a tenfold decrease in larval density in fish farming ponds and reduced community-wide malaria incidence in northwestern Brazil

Fig. 2

Monitoring of anopheline larval density in fish farming ponds of Vila Assis Brasil (VAB), northwestern Brazil, from September 2017 through November 2019. Monthly averages of larvae per dip are shown for early instar (L1 and L2; dark green) and late instar larvae (L3 and L4; light green) collected in fish farming ponds in VAB (number of ponds ranging between 127 and 165 before the intervention and between 167 and 170 during and shortly after the intervention). Vertical arrows indicate the timing of larvicide treatment (from October 2018 through April 2019 and from June 2019 through October 2019). Larval density measurements were carried out 21 days after each larvicide application during the intervention. The light blue area chart indicates the monthly rainfall (mm)

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Parasites & Vectors

ISSN: 1756-3305

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