Table 1 in Differences in Ca - management between the ventricle of two species of Neotropical teleosts: the jeju, Hoplerythrinus unitaeniatus (Spix & Agassiz, 1829), and the acara, Geophagus brasiliensis (Quoy & Gaimard, 1824)

Table 1. Twitch force values (Fc - mN/mm2, mean values ± S.E.; n = 12) developed by ventricle strips from acara and jeju at different stimulation frequencies (12, in vivo range, and 96 bpm) in response to different treatments. Ctrl: without previous addition of adrenaline or ryanodine; +Ryan: pre-treated with 10 µM of ryanodine; T-Adr + Ryan: treated with 10-9 M of adrenaline and 10 µM of ryanodine; A-Adr + Ryan: treated with 10-6 M of adrenaline and 10 µM of ryanodine. I: irregular recording (i. e., at least 20% of preparations were unable to contract regularly at the respective frequency). *: different from the initial (12 bpm) frequency (ANOVA followed by Tukey-Kramer parametric test).A: different from Ctrl; b: different from + Ryan; c: different from T-Adr+Ryan; d: different from A-Adr+Ryan at the same stimulation frequency (Mann-Whitney non-parametric test). p <0.05. TreatmentAcaraJeju1279.6 in vivo961250.3 in vivo96Ctrl28.66 ± 1.8617.13 ± 1.11*14.06 ± 1.87*36.09 ± 1.6720.40 ± 0.94*10.04 ± 1.55*+ Ryan28.73 ± 1.2920.02 ± 1.18*16.48 ± 0.89*28.34 ± 2.44A15.91 ± 1.37*AIT-Adr + Ryan32.95 ± 1.32B33.30 ± 1.33A,B27.35 ± 2.54*A,B33.35 ± 2.6520.15 ± 1.60*BIA-Adr + Ryan44.27 ± 4.93A,B,C33.57 ± 3.74*A,B26.40 ± 2.07*A,B92.16 ± 7.91A,B,C69.51 ± 5.97*A,B42.88 ± 5.81*A