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Length-Weight Parameters for Cathorops spixii
Length-weight (log a vs b) graph
    [n=15]
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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
0.02530 2.703   Unsexed 4.9 - 16.1 TL  0.851      705  Brazil Ilha de Paciência, Maranhão, 2006-2007 
0.01740 2.750   mixed 2.1 - 23.5 TL  0.980      144  Brazil Sepetiba Bay, 1993-96 
0.01701 2.800   unsexed 4.1 - 27.5 TL  0.957  0.045 0.0599 2851  Brazil Southeastern coast / 2004-2006. 
0.01701 2.801   male     TL  0.936  0.046 0.0599   Brazil Southeastern coast / 2004-2006. 
0.01420 2.829   Unsexed 1.4 - 13.2 TL  0.987      706  Brazil Bragança Paulista, Pará, 1999-2001 
0.01443 2.868   female     TL  0.928  0.041 0.0561   Brazil Southeastern coast / 2004-2006. 
0.00988 3.003   mixed 8.1 - 18.9 TL  0.945  0.718 1.9082 504  Brazil Paraná (0°S - 25°S), 2003-2004 
0.00900 3.027   unsexed 0.7 - 17.3 TL  0.915  1.227   8904  Brazil Marapanim River, Para State / 2006-2007. 
0.00596 3.040   unsexed 6.0 - 25.9 TL  0.944  0.040 0.0357 1485  Brazil Parana´ state coast / 2004 - 2005 
0.00663 3.147   unsexed 8.0 - 24.0 TL  0.976  0.076 0.1072 238  Brazil Southeastern coast / 2004-2006. 
0.00830 3.180   unsexed 10.2 - 21.9 SL        2164  Colombia Gulf of Salamanca, Caribbean, 1995-98 
0.00501 3.181   unsexed 9.1 - 29.1 TL  0.981  0.850 2.1862 922  Brazil Sergipe / 2015-2016. 
0.00420 3.230   Unsexed 11.3 - 19.0 TL  0.975  0.539   22  Brazil Northern region (Curuçá Estuary), Pará, 2003-2004. 
0.00377 3.304   mixed 3.1 - 20.7 TL  0.964  0.638 1.4718 2407  Brazil Pará (0°S - 25°S), 2003-2004 
0.00240 3.506   unsexed 9.3 - 18.7 TL  0.980  0.141 0.1761 51  Brazil southern Bahia / 2001-2005 
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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 = 15, geometric mean a = 0.0087, mean b = 3.03, SD log10(W) = 0.0693, SD log10(a) = 0.2867 SD b = 0.2263
Estimate weight for given length: (cm) = (g) 95% range - (g)
Search for more references on length-weight:    Scirus
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