Water vapour conductance
The three species of Apteryx differed significantly in the water
vapour conductance of their eggshells (Figure 7A), with Brown Kiwi
having a significantly higher water vapour conductance when compared to
Tokoeka (F=3.87, p=0.001), and Rowi being significantly different to
Tokoeka (F=2.06, p=0.05). Rowi did not differ significantly from Brown
Kiwi (F=1.91, p= 0.062); however, this comparison could be considered
close to being significant. The different regions of the eggshell
confirmed existing differences in water vapour conductance between
species, however Rowi being the only one significantly different,
marginally when compared to Brown Kiwi (T=-2.11, p= 0.05) and
significantly when compared to Tokoeka (T=2.59 , p =0.02), also
only the blunt end was significantly different to the other two regions
for the three species. There was no interaction between species and
fragment (Table 6).