Fig. 3.

Principal component analysis (PCA) and between classes analysis (BCA) of Anopheles and Culicinae aquatic stages. ‘CuliciL2-3-4’ means Culicinae larval stage 2-3-4, ‘CuliciPup’ = Culicinae Pupa, ‘Anop.L2-3-4’ = Anopheles Larval stage 2-3-4, ‘AnopPup’ = Anopheles pupae. a Principal component Analysis. The horizontal axis is mainly defined by the Culicinae stages and the vertical axis by Anopheles stages. b BCA according to the typology of sampled sites. The ‘River’ tag is hidden behind the ‘Small Temp’ tag. The ‘Pond’ tag is within the space of Anopheles vectors. The ‘Kori’ tag aligns with the Culicinae vectors. c BCA according to the sites, the site ‘9’ is the Goudel Pond; the 41 site is the Kori (Fig. 1). d BCA according to the surface of water bodies. The three values ‘0’, ‘7’ and ‘8’ correspond respectively to sites which are dry, or in relation to the Niger River (>10,000 m²), or not accessible. They are at the opposite of the mosquito space of vector projection. e BCA according to the distance to the NigerRiver. ‘1’ at <500 m to the median line of the river bed, ‘2’ between 500 and 1500 m and ‘3’ beyond 1500 m from the river median line, meaning in the city centre. f BCA according to the up or down stream situation of sampled sites; ‘1’ is upstream, ‘2’ is at the city level, ‘3’ is downstream the city. Please note that the ‘Anopheles’ vectors all expand within the right part of the space (~X-axis, given the very high Eigenvalue of this axis, as shown in the bottom right legend)