Fig. 2 in Calcium fluxes in Hoplosternum littorale (tamoatá) exposed to different types of Amazonian waters

Fig. 2. Net Ca2+ fluxes of Hoplosternum littorale transferred from tanks of ion-poor well water to experimental flux chambers containing different Amazonian waters. The first four bars show fluxes measured over the first 2 hours, and the second set of four bars show data for the 2-4 h period after initial transfer. Data expressed as mean ± SEM. Positive values indicate net influxes and negative values net effluxes. Different letters indicate significant differences among groups in the same period of time by Kruskall-Wallis ANOVA and Mann- Whitney test (P <0.05). Asteriks (*) indicate significantly different from the same group at 2 h (P <0.05)