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Table 4 Results of the type III analysis of variance calculated for basal metabolic rate (BMR) in Siberian hamster

From: Polymorphism of winter phenotype in Siberian hamster: consecutive litters do not differ in photoresponsiveness but prolonged acclimation to long photoperiod inhibits winter molt

Model no

Trait

Model

Factors

F(df)

P-value

1

BMR in 3 months old animals

LME

mb

189.79 (1, 222)

<0.001

litter order

1.49 (1, 208)

0.224

sex

15.22 (1, 224)

<0.001

mb×litter order

2.87 (1, 209)

0.091

2

BMR after16 weeksunder SP

LME

mb

715.89 (1, 412)

< 0.001

litter order

0.10 (1, 191)

0.752

duration of LP acclimation

0.37 (1, 190)

0.542

sex

24.43 (1, 274)

< 0.001

photoperiod

66.74 (1, 591)

< 0.001

molting

9.07 (2, 190)

0.001

duration of LP acclimation × molting

3.31 (2, 189)

0.038

duration of LP acclimation × photoperiod

0.18 (1, 595)

0.673

litter order × molting

4.61 (2, 190)

0.011

litter order × photoperiod

2.92 (1, 590)

0.087

photoperiod × molting

1.38 (2, 594)

0.252

duration of LP acclimation × photoperiod × molting

0.35 (2, 591)

0.707

litter order × photoperiod×molting

5.38 (2, 590)

0.005

3

BMR of late responding individuals

LME

mb

204.38 (1, 40)

<0.001

litter order

0.02 (1, 99)

0.877

duration of LP acclimation

2.78 (1, 22)

0.109

sex

7.67 (1, 24)

0.011

time of measurement

6.23 (2, 137)

0.002

molting

0.01 (1, 22)

0.940

litter order × time of measurement

3.62 (2, 139)

0.029

  1. mb body mass, SP short photoperiod, LP long photoperiod, LME linear mixed effect model. Significant effects are indicated in bold