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Table 2 Effects of marker size, mosquito sex, number of swarming mosquitoes and number of released mosquitoes on swarm characteristics in An. coluzzii and An. gambiae in semi-field setups

From: Sex aggregation and species segregation cues in swarming mosquitoes: role of ground visual markers

 Marker sizeSpeciesSexNo. of swarming mosquitoes
60 cm100 cmχ2dfP-valueAn. coluzziiAn. gambiaeχ2dfP-valueFemaleMaleχ2dfP-valueχ2dfP-value
Swarm dimension (± SE) (cm)
 Maximal161.5 ± 4.8181.6 ± 4.932.191< 0.001176.0 ± 4.2167.2 ± 5.72.2010.14177.5 ± 3.1161.8 ± 7.86.8710.0090.004710.95
 Nucleus127.4 ± 5.5153.6 ± 4.970.921< 0.001140.9 ± 4.5140.4 ± 6.41.9210.17142.4 ± 3.5137.7 ± 8.60.0710.790.2210.64
 Minimal95.9 ± 6.1122.6 ± 5.731.901< 0.001107.3 ± 5.6111.5 ± 6.80.1410.71106.4 ± 4.8114.3 ± 8.40.3810.540.01310.91
 Amplitude65.6 ± 44.958.6 ± 3.82.8110.0968.3 ± 4.357.7 ± 3.93.4010.0671.1 ± 3.346.9 ± 4.511.461< 0.0010.1910.67
 Width45.3 ± 3.355.2 ± 3.40.01810.8951.3 ± 3.249.3 ± 3.60.3510.5549.5 ± 3.251.5 ± 3.61.2910.265.310.021
Swarm sizea (± SE)
 No. of swarming mosquitoes26.1 ± 2.642.8 ± 3.9228.751< 0.00143.5 ± 3.725.3 ± 2.719.061< 0.00125.3 ± 2.149.4 ± 4.822.331< 0.001nanana
  1. aSwarm size expressed as the number of swarming mosquitoes
  2. Abbreviations: SE, standard error; na, not included in the analyses
  3. Note: Significant P-values are in bold