Fig. 1 in Plasma ion levels of freshwater and marine/estuarine teleosts from Southern Brazil

Fig. 1. Ion regulation curves for Na+ (a), Cl- (b), Ca2+ (c), Mg2+ (d), and K+ (e) in the plasma of M. furnieri () and G. barbus (O) collected from water at different salinities from the São Gonçalo channel. Data are expressed as the means ± SEM (n = 12) (P <0.05); the traced line represents the isoionic line. The following equations were fitted to the data: Micropogonias furnieri (Na+: y=214.52+0.051x, r2=0.87; Cl-: y=130.45+0.110, r2=0.94; K+: y=14.44-0.396x, r2=0.71; Ca2+: y=1.73+0.067x, r2=0.70; Mg2+: y=0.62+0.020x, r2=0.70); Genidens barbus (Na+: y=223.74+0.048x, r2=0.70; Cl-: y=150.56+0.133x, r2=0.98; K+: y=14.23-0.419x, r2=0.97; Ca2+: y=2.29+0.087x, r2=0.82; Mg2+: y=0.66+0.037x, r2=0.85), where x = salinity and y = plasma ion concentration (mmol L-1).