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Length-Weight Parameters for Squalus acanthias
[n=41]
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Length-weight (log a vs b) graph
a b Country Locality
Score a b Doubtful? Sex Length (cm) Length
type 		r2 SD b SD log10 a n Country Locality
0.01250 2.619 yes  juvenile 41.0 - 52.0 TL  0.957  0.226   8  Turkey northern Sea of Marmara, 2006-2007 (Nov.-Mar.) 
0.01530 2.757   Mixed 25.2 - 142.7 TL  0.981        Black Sea 
0.01120 2.775   female 27.0 - 70.5 TL  0.821      16  Turkey North Aegean Sea, 1999-00 
0.01030 2.828   male 30.5 - 94.2 TL  0.982  0.822 0.1263 260  Turkey Black Sea/2018-2023 
0.00980 2.856   female 27.2 - 111.8 TL  0.987  0.960 0.3784 316  Turkey Black Sea/2018-2023 
0.00720 2.868   male 20.8 - 87.5 TL  0.956  0.076   253  Turkey Saros Bay / 2005-2008. 
0.00595 2.889   female               UK Scotland North East Atlantic, 3rd quarter 
0.00576 2.890   male               UK Scotland North East Atlantic 
0.00449 2.965   male 23.0 - 90.0 TL  0.972      3117  USA Atlantic coast / Autumn 1992-1999. 
0.00410 2.984   Male 25.5 - 97.5 TL  0.982      127  North Sea / 1994-2008 
0.00373 2.990   male 22.0 - 94.0 TL  0.980      3691  USA Atlantic coast / Winter 1992-1999. 
0.00340 3.000   unsexed 36.5 - 75.5 TL        2  Northwestern Mediterranean / 2011-2013. 
0.00356 3.000   male 20.0 - 91.0 TL  0.974      4676  USA Atlantic coast / Spring 1992-1999. 
0.00310 3.040   male 25.0 - 92.0 TL  0.934  0.010 0.0290 12584  New Zealand New Zealand EEZ / 1976-2013. 
0.00370 3.048   mixed 17.1 - 115.0 TL  0.967  0.047   565  Turkey Saros Bay / 2005-2008. 
0.00275 3.050   male     FL          New Zealand QMA3 
0.00313 3.060   mixed 22.0 - 106.0 TL  0.973      6986  USA Atlantic coast / Autumn 1992-1999. 
0.00309 3.090   female 51.5 - 76.5 TL  0.830  0.460   40  Turkey off Gökçeada Island, Northern Aegean Sea / 2019. 
0.00270 3.090   unsexed     TL        7  Flemish Cap, NW Atlantic, 1988-2002 (July) 
0.00270 3.100   female 22.0 - 106.0 TL  0.976      3869  USA Atlantic coast / Autumn 1992-1999. 
0.00310 3.106   mixed 27.0 - 70.5 TL  0.963      32  Turkey North Aegean Sea, 1999-00 
0.00310 3.110 yes  juvenile 27.0 - 70.5 TL  0.980  0.160   32  Turkey North Aegean Sea, 2003 (March; July) 
0.00222 3.123   mixed 22.0 - 109.0 TL  0.975      7534  USA Atlantic coast / Winter 1992-1999. 
0.00270 3.128   female 17.1 - 115.0 TL  0.975  0.056   312  Turkey Saros Bay / 2005-2008. 
0.00230 3.129   unsexed 24.5 - 115.5 TL  0.982      273  North Sea / 1994-2008 
0.00200 3.150   mixed 19.1 - 117.3 TL  0.987  0.349   421  Croatia Eastern Adriatic Sea / 1997-2001. 
0.00100 3.153   unsexed 112.0 - 144.0 TL  0.810  0.844   22  Bulgaria Black Sea, 2006-2008 
0.00232 3.160   mixed 46.9 - 76.5 TL  0.880  0.350   48  Turkey off Gökçeada Island, Northern Aegean Sea / 2019. 
0.00213 3.163   unsexed 49.4 - 102.0 FL  0.949      535  New Zealand  
0.00180 3.170   mixed 13.0 - 114.0 TL  0.971      12070  USA Atlantic coast / Spring 1992-1999. 
0.00215 3.180   male 46.9 - 59.0 TL  0.850  1.350   8  Turkey off Gökçeada Island, Northern Aegean Sea / 2019. 
0.00230 3.182   male 38.0 - 56.5 TL  0.988      16  Turkey North Aegean Sea, 1999-00 
0.00161 3.210   female 22.0 - 109.0 TL  0.981      3843  USA Atlantic coast / Winter 1992-1999. 
0.00147 3.220   unsexed     TL          South Africa  
0.00150 3.240   female 13.0 - 114.0 TL  0.975      7393  USA Atlantic coast / Spring 1992-1999. 
0.00150 3.249   Female 24.5 - 115.5 TL  0.992      108  North Sea / 1994-2008 
0.00139 3.250   female     FL          New Zealand QMA3 
0.00108 3.301   female               UK North East Atlantic, 1st, 2nd & 3rd quarter 
0.00120 3.310   female 26.0 - 107.0 TL  0.965  0.010 0.0378 19818  New Zealand New Zealand EEZ / 1976-2013. 
0.00090 3.360   mixed 25.0 - 107.0 TL  0.956  0.010 0.0000 32402  New Zealand New Zealand EEZ / 1976-2013. 
0.00077 3.371   mixed     TL        691  UK Engld Wal not specified (ICES division), 1986 
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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 = 38, geometric mean a = 0.0028, mean b = 3.09, SD log10(W) = 0, SD log10(a) = 0.3040 SD b = 0.1526
Estimate weight for given length: (cm) = (g) 95% range - (g)
Search for more references on length-weight:    Scirus
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