Fig. 4. Total (net) flux and unidirectional fluxes of Na+ (A) and total
Cl- flux (B) in northern (black and white) and southern (grey and
hatched) killifish after transfer from brackish water (10 g l-1) to
freshwater (N>9). Positive values represent influx
(Jin).
Significant difference from
northern population (P<0.05).