Table 1.
Seasonal morph and sexb | Melanization ratinga | ||||
---|---|---|---|---|---|
Abdominal segment | |||||
1st | 2nd | 3rd | 4th | 5th | |
Summer female | 1.1 | 2.0 | 1.9 | 1.8*, c | 4.6 |
Winter female | 2.8 | 2.9 | 3.5 | 5.0 | 5.0 |
Summer male | 1.4 | 2.1 | 2.6* | 5.0 | 5.0 |
Winter male | 3.5 | 3.6 | 4.9 | 5.0 | 5.0 |
n = 13 for winter male and female; n = 17 for summer male and female
aMelanization rating based on visual rating of the thickness of the transverse dark line of each dorsal abdominal segment (Additional file 1: Figure S1): 1 thin dark line, 5 completely dark
bSummer morphs were reared at 16:8 L:D and 20 °C; winter morphs were reared at 12:12 L:D and 10 °C
cMeans followed by an asterisk are significantly different within a sex (t test, P ≤ 0.05)