Table 1

Sources of variation in blood vessel diameter for four major vessels. ANOVA models were run using Family, Environment and Family by Environment interaction as the modelled sources of variation. Critical F values for the given degrees of freedom (DF) and the calculated F values are given for diameters of the Dorsal and Caudal veins and the dorsal and Caudal arteries. Significant F values (p < 0.05) are in bold face and asterisks represent highly significant (p < 0.005) p values.
Source
 DF
 F value




Critical
 Dorsal vein
 Caudal vein
 Dorsal artery
 Caudal artery
Family
 3
 2.91
 11.35*
 1.35
 8.74*
 0.58
Environment
 1
 4.16
 1.87
 3.70
 12.10*
 7.71*
Family × Environment
 3
 2.91
 0.30
 0.30
 2.11
 0.46
Error
 38




Moore et al. Frontiers in Zoology 2006 3:4   doi:10.1186/1742-9994-3-4