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Length-Weight Parameters for Trachelyopterus galeatus
Length-weight (log a vs b) graph
    [n=9]
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a b Country Locality
Score a b Doubtful? Sex Length (cm) Length
type 		r2 SD b SD log10 a n Country Locality
0.04320 2.840   unsexed 6.5 - 14.8 SL  0.910  0.190 0.1883 90  Brazil Santa Virginia Bay, Rio Negro basin, Pantanal / 1999-2001 
0.03370 2.990   unsexed 6.6 - 22.0 SL  0.901      3578  Brazil Itaipu Reservoir, Paraná, 1983-89 
0.02506 3.071   unsexed 6.8 - 23.7 SL  0.970  0.053 0.0605 106  Brazil Madiera River, Amazon / 2008-2011 
0.01660 3.195   female 8.9 - 23.0 TL  0.950  0.056 0.0648 645  Brazil Porto Primavera Reservoir / 1999-2012 
0.01650 3.197   mixed 8.9 - 30.0 TL  0.950  0.038 0.0443 1390  Brazil Porto Primavera Reservoir / 1999-2012 
0.01620 3.203   male 9.0 - 30.0 TL  0.950  0.053 0.0634 745  Brazil Porto Primavera Reservoir / 1999-2012 
0.01780 3.220   unsexed 1.5 - 17.2 SL  0.990  0.040 0.0356 344  Brazil Iguatemi River / 2006-2008 
0.00600 3.410   unsexed 7.5 - 19.7 TL  0.940  0.090 0.1761 317  Brazil Upper Uruguay River / 1995-2002. 
0.00300 3.579   unsexed 7.5 - 14.5 TL  0.951  0.276 0.4771 37  Brazil Igarapé Fortaleza basin, state of Amapá / 2012-2014. 
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Preliminary parameter estimates are provided below, based on your selection of studies and weighted by the scores.
You may want to exclude or give less weight to studies that are far from the regression line in the graph.
Selected studies = 9, geometric mean a = 0.0155, mean b = 3.19, SD log10(W) = 0.1449, SD log10(a) = 0.3382 SD b = 0.2032
Estimate weight for given length: (cm) = (g) 95% range - (g)
Search for more references on length-weight:    Scirus
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