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Length-Weight Parameters for Alosa alosa
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
0.18980 2.070 Yes  unsexed 28.0 - 37.2 TL  0.908  0.670   82  Portugal off Algarve coast, 1998-00 
0.00545 2.721 Yes  male 44.0 - 61.0 TL  0.778      131  Portugal Douro River 
0.00398 2.781 Yes  female 50.0 - 73.0 TL  0.832      151  Portugal Douro River 
0.00277 2.852 Yes  female 50.0 - 63.0 TL  0.748      26  France Loire River 
0.00168 2.924 Yes  male 44.0 - 57.0 TL  0.815      89  France Loire River 
0.00144 2.968 Yes  male     TL  0.998      9  Germany Rhine River 
0.00960 2.981   unsexed 31.5 - 64.5 TL        42  UK Scotland North Sea & West Coast 
0.00751 3.045   male 42.0 - 56.0 TL  0.899      51  France Garonne River 
0.00492 3.202   unsexed 10.0 - 62.0 TL  0.998      233  France Bay of Biscay 
0.00293 3.203   mixed     TL  0.956      161  Portugal Lima 
0.00322 3.216   female     TL  0.970      13  Germany Rhine River 
0.00300 3.290   unsexed 20.0 - 54.5 TL  0.983  0.130 0.1761 48  France French Catalan coast / 2007-2010. 
0.00300 3.295   unsexed 20.2 - 42.2 TL  0.979  0.257 1.4771 17  Spain Gulf of Cadiz / 2019-2022. 
0.00612 3.454   mixed     TL  0.955      799  Morocco Sebou 
0.00466 3.497 Yes  female 50.0 - 65.0 TL  0.781      58  France Garonne River 
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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 = 8, geometric mean a = 0.0044, mean b = 3.22, SD log10(W) = 0, SD log10(a) = 0.1844 SD b = 0.1327
Estimate weight for given length: (cm) = (g) 95% range - (g)
Search for more references on length-weight:    Scirus
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