Table 4.
Summary statistics (sample size, mean, SD, and coefficient of variation (CoV) of wing centroid size, thorax length and wing size/thorax ratio of mosquitoes obtained from BGS or sticky ovitraps in March 2011*
| Wing centroid size (mm) | Thorax length (mm) | Wing size/thorax ratio | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| N | Mean | SD | CoV | n | Mean | SD | CoV | n | Median | SD | CoV | ||
| BGS traps | |||||||||||||
| Overall | 117 | 2.834 | 0.27 | 9.50% | 124 | 1.258 | 0.139 | 11.00% | 108 | 2.294 | 0.075 | 3.30% | |
| Gravid | 71 | 2.902 | 0.238 | 8.20% | 79 | 1.287 | 0.124 | 9.70% | 67 | 2.292 | 0.073 | 3.20% | |
| Parous (1) | 17 | 2.751 | 0.242 | 8.80% | 16 | 1.206 | 0.107 | 8.80% | 15 | 2.290 | 0.067 | 2.90% | |
| Nulliparous (2) | 12 | 2.765 | 0.331 | 12.00% | 13 | 1.240 | 0.184 | 14.80% | 12 | 2.294 | 0.086 | 3.80% | |
| Non-gravid (3) | 17 | 2.685 | 0.302 | 11.30% | 16 | 1.184 | 0.159 | 13.40% | 14 | 2.317 | 0.08 | 3.50% | |
| (1)+(2)+(3) | 46 | 2.73 | 0.285 | 10.50% | 45 | 1.208 | 0.149 | 12.30% | 41 | 2.296 | 0.077 | 3.40% | |
| Sticky ovitraps | 56 | 2.921 | 0.286 | 9.80% | 76 | 1.306 | 0.144 | 11.00% | 53 | 2.257 | 0.073 | 3.20% | |
*
Median of wing size/thorax ratio because we used Mann-Whitney U comparison of medians to test difference.