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Table 1 Regression analysis of swarm start and stop times against environmental parameters based on Pearson’s Correlation Coefficient test (two-tailed distribution)

From: Differences in timing of mating swarms in sympatric populations of Anopheles coluzzii and Anopheles gambiae s.s. (formerly An. gambiae M and S molecular forms) in Burkina Faso, West Africa

  An. coluzzi An. gambiae s.s.  
  r p r p df = n-2
Start swarm
  Temperature 0.0640 0.3233 0.1694 0.0085 238&
  Humidity 0.4452 < 0.0001 0.2837 < 0.0001 238&
  Light intensity 0.1345 0.0373 0.0412 0.5250 238&
  Time of sunset 0.9606 < 0.0001 0.9481 < 0.0001 498*
End swarm
  Temperature 0.0735 0.2568 0.2731 < 0.0001 238&
  Humidity 0.2445 <0.001 0.1543 0.0168 238&
  Light intensity 0.1187 0.0663 0.3592 < 0.0001 238&
  Time of sunset 0.9469 < 0.0001 0.9621 < 0.0001 398#
  1. The correlation (r) between each environmental variate in turn against swarm start and end times for each species; 'p’ = probability of no correlation, sample size for each species n = 240 records each of temperature, humidity and light intensity at the start and at the end of swarms (&20/month/species for 12 months, 2007), n = 500 records of sunset times for start of swarms (*20/month/species for 25 months over 4 years), and n = 400 records of sunset times for the end of swarms (#20/month/species for 20 months over 3 years). NB: swarm end times were not recorded in 2009.