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Table 4 Associations between the proportional frequencies of the immatures of An. gambiae s.s. and An. arabiensis among sampling sites within a habitat and among larval breeding habitats as influenced by each physicochemical property of water during a category of rainfall in Banambani

From: Water quality and immatures of the M and S forms of Anopheles gambiae s.s. and An. arabiensis in a Malian village

Source df Young Old Total
  χ 2 P χ 2 P χ 2 P
Alkalinity 1 - - 0.70 0.404 0.45 0.503
Habitat 2    0.46 0.796 0.27 0.873
Site within a habitat 2    3.08 0.215 5.54 0.063
Category of rainfall 2    1.28 0.527 2.35 0.309
Conductivity 1 1.72 0.189 0.11 0.743 0.03 0.872
Habitat 2 2.68 0.262 0.01 0.993 0.28 0.869
Site within a habitat 2 7.63 0.022* 2.94 0.231 6.05 0.049*
Category of rainfall 2 1.70 0.427 1.32 0.518 2.59 0.273
Dissolved oxygen 1 - - 1.00 0.317 1.75 0.186
Habitat 2    0.87 0.648 4.08 0.129
Site within a habitat 2    3.46 0.177 5.83 0.054
Category of rainfall 2    1.49 0.474 2.44 0.295
Nitrate 1 - - 0.27 0.602 0.91 0.339
Habitat 2    0.11 0.946 1.28 0.526
Site within a habitat 2    2.20 0.333 4.91 0.086
Category of rainfall 2    1.25 0.536 1.89 0.389
Orthophosphate 1 1.33 0.249 2.34 0.126 2.00 0.157
Habitat 2 3.21 0.201 1.58 0.454 4.80 0.091
Site within a habitat 2 8.24 0.016* 0.88 0.645 4.38 0.112
Category of rainfall 2 0.68 0.713 1.38 0.501 2.48 0.289
pH 1 0.34 0.559 2.38 0.123 3.20 0.074
Habitat 2 1.08 0.583 0.30 0.861 1.34 0.511
Site within a habitat 2 7.71 0.021* 1.80 0.406 4.81 0.090
Category of rainfall 2 0.54 0.762 1.22 0.543 2.86 0.239
  Temperature 1 - - 1.14 0.287 3.47 0.063
Habitat 2    0.40 0.817 2.65 0.265
Site within a habitat 2    1.58 0.454 5.90 0.052
Category of rainfall 2    1.44 0.486 4.38 0.112
TDS 1 2.00 0.157 0.24 0.626 0.02 0.895
Habitat 2 2.93 0.231 0.05 0.977 0.33 0.849
Site within a habitat 2 7.61 0.022* 3.17 0.205 5.77 0.056
Category of rainfall 2 1.98 0.371 1.31 0.521 2.63 0.268
Turbidity 1 - - 2.27 0.132 2.57 0.109
Habitat 2    2.10 0.350 1.71 0.425
Site within a habitat 2    0.26 0.878 2.91 0.234
Category of rainfall 2    1.61 0.448 2.65 0.266
  1. * P < 0.05, "-" not applicable