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Table 2 Ecological indices of composition and structure by study site in 2014–2015

From: Ecological distribution and population dynamics of Rift Valley fever virus mosquito vectors (Diptera, Culicidae) in Senegal

Locality Diama (SRD) DML (SRV) Younouféré (Ferlo)
Year 2014 2015 2014 2015 2014 2015
Abundance (N) 51,058 75,707 81,514 30,808 108,475 8551
Total richness (S) 22 21 18 19 23 23
Average richness (Sm) 9.85 9.55 8.6 8.35 3.57 3.82
Maximum diversity (H′ max) 4.459 4.392 4.169 4.247 4.523 4.523
Shannon index (H′) 1.037 1.087 1.318 1.33 0.254 0.332
Simpson’s index (1-D) 0.446 0.427 0.346 0.34 0.921 0.898
Equitability index (E) 0.233 0.247 0.316 0.313 0.056 0.073
AR (%) Ae. vexans arabiensis 0 0.012 0 0.097 96.19 79.04
Cx. poicilipes 0.235 0.767 0.974 1.252 0.165 1.251
Cx. tritaeniorhynchus 57.581 52.94 46.1 33.57 0.228 1.064
Ma. uniformis 32.306 36.659 34.71 46.42 0.003 0.02
C (%) Ae. vexans arabiensis 0 20 0 25 68.33 61.66
Cx. poicilipes 75 65 90 70 16.66 15
Cx. tritaeniorhynchus 100 100 100 95 56.66 25
Ma. uniformis 100 100 100 95 6.666 1.66
  1. Abbreviations: AR relative abundance, C frequency of occurrence or constancy