Fig. 5. Bulk water absorption rate correlated to net strong ion absorption rate
(sum of net Na+ and Cl– flux rate) across
killifish intestine, in brackish water (BW; 10% seawater; grey squares) and
after transfer to seawater (SW; black triangles and diamonds). Bulk water
transport was correlated to net ion transport (r2=0.792,
P<0.0001), with a slope of 0.00336±0.00030 ml
H2O µmol–1 strong ion. Grey dashed lines
represent 95% confidence limits of regression.