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Table 3 Effects of sex, temperature (Temp) and relative humidity (RH) on the water at death ( dehydration tolerance) of three Ceratitis species estimated using general linear models

From: Physiological mechanisms of dehydration tolerance contribute to the invasion potential of Ceratitis capitata (Wiedemann) (Diptera: Tephritidae) relative to its less widely distributed congeners

Dependent variable SS df F P
C. capitata     
 Intercept 1.948 1 5.740 0.018
 Sex 1.859 1 5.478 0.021
 Temp 0.177 1 0.521 0.471
 RH 1.974 3 1.939 0.126
 Estimated body water 3.985 1 11.742 <0.001
 Sex × Temp 0.002 1 0.007 0.935
 Sex × RH 2.256 3 2.216 0.089
 Temp × RH 0.977 3 0.959 0.414
 Sex × Temp × RH 3.657 3 3.592 0.015
 Residuals 48.534 143   
C. cosyra     
 Intercept 0.863 1 3.842 0.052
 Sex 0.550 1 2.447 0.120
 Temp 0.039 1 0.172 0.679
 RH 3.624 3 5.376 0.002
 Estimated body water 18.392 1 81.849 <0.001
 Sex × Temp 0.855 1 3.807 0.053
 Sex × RH 2.446 3 3.628 0.015
 Temp × RH 4.753 3 7.051 <0.001
 Residuals 32.583 145   
C. rosa     
 Intercept 0.649 1 1.164 0.282
 Sex 1.622 1 2.909 0.090
 Temp 0.108 1 0.193 0.661
 RH 6.446 3 3.855 0.011
 Estimated body water 33.444 1 59.991 <0.001
 Sex × Temp 0.346 1 0.621 0.432
 Sex × RH 0.463 3 0.277 0.842
 Temp × RH 10.212 3 6.106 <0.001
 Sex × Temp × RH 3.476 3 2.079 0.106
 Residuals 79.720 143   
  1. Estimated body water (determined from initial body mass using the equations in Additional file 1: Table S1) was included as a covariate. Significant effects (P < 0.05) are indicated by bold type