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Length-Weight Parameters for Polyodon spathula
Length-weight (log a vs b) graph
    [n=7]
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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
0.04570 2.510   unsexed     FL  0.821        USA Lake Henderson, Louisiana 
0.03950 2.770   mixed     FL          USA Missouri River, South Dakota-Nebraska 
0.00736 2.842   unsexed 53.3 - 127.0 TL          USA Mississippi River, Iowa 
0.03700 2.850   unsexed     FL  0.859        USA Atchafalaya River, Louisiana 
0.00109 3.284   unsexed 43.2 - 119.4 TL          USA Ft. Gibson, Oklahoma 
0.01000 3.460   unsexed     FL  0.949        USA Lake Pontchartrain, Louisiana 
0.00045 3.464   unsexed 40.6 - 152.4 TL          USA Missouri River, South Dakota 
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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 = 7, geometric mean a = 0.0085, mean b = 3.04, SD log10(W) = 0.5915, SD log10(a) = 0.7207 SD b = 0.3554
Estimate weight for given length: (cm) = (g) 95% range - (g)
Search for more references on length-weight:    Scirus
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