Table 1.

Jmax and apparent Km for unidirectional branchial calcium influx rates in juvenile rainbow trout at various waterborne lead concentrations

Jmax (nmol g-1 h-1) Apparent Km (μmol l-1)
Waterborne [Pb] (μmol l-1)LBEHNLRLBEHNLR
Control135.1128.5127.9166.2100.598.0
0.48156.3141.0134.3475.6*385.4*332.6*
2.4147.1102.2100.4798.7*391.4*360.2*
4.8144.954.4*56.5*1911.7*490.0*395.0*
  • Values are means.

    Kinetics were characterized by Lineweaver-Burk regression (LB), Eadie-Hofstee regression (EH) and non-linear regression (NLR).

  • * Significant difference (P<0.05) from control (N=7)