Table 2 Pigmentation varies significantly by longitude, but not latitude

From: Local adaptation for body color in Drosophila americana

 

Dataset A

Dataset B

 

Female flies

Male flies

Female flies

Male flies

Effect of latitude

F=0.27

F=0.57

F=0.50

F=0.10

 

P=0.61

P=0.47

P=0.48

P=0.75

Effect of longitude

F=14.66

F=6.50

F=22.39

F=15.66

 

P=0.005

P=0.034

P<0.0001a

P=0.0002

Mean pigment intensity

131.8±2.35

124.5±2.63

−16.44±0.189

−18.47±0.192

  1. F- and P-values were obtained for the following model: Yjkl=Tj+Gk+ejkl (described more fully in Materials and methods). Mean pigmentation scores for male and female flies are given in the bottom row, ±standard error.
  2. aPigmentation was measured using different scales for dataset A and dataset B; however, larger ordinal values correspond to lighter coloration in both cases.
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