Tab. 2 in Reproduction, feeding and migration patterns of Prochilodus nigricans (Characiformes: Prochilodontidae) in northeastern Ecuador

Tab. 2. Length-weight (LW) regressions log 10 W, g = a + b*log 10 (SL, mm) for males, females and both sexes of Prochilodus nigricans taken in different seasons (1999), with parameter estimates for a (intercept) and b (slope), coefficient of determination (r 2), and sample size, n; SE = standard error. Estimates followed by same letter were not significantly different (based on analysis of covariance, ANCOVA). For definitions of seasons in the flood cycle, see text. SexSeasonsb± SEa± SEr²nMalesAll2.83u0.02-4.310.050.992153I-Rising2.800.10-4.200.250.9909II-Flood2.84f0.14-4.330.340.94328III-Falling2.89f0.03-4.430.070.99082IV-Low2.78f0.07-4.200.170.97834FemalesAll2.87u0.04-4.390.050.992162I-Rising3.080.44-4.911.110.83012II-Flood2.67c0.18-3.900.450.90325III-Falling2.85c0.03-4.350.070.986111IV-Low2.74c0.06-4.070.150.99314CombinedAll2.85d0.01-4.360.030.992315I-Rising2.85d0.09-4.310.230.98021II-Flood2.79e0.11-4.220.280.92453III-Falling2.87d0.02-4.390.050.988193IV-Low2.76e0.05-4.140.130.98348