Weight-length relationships, weight conversion factors and somatic indices from two stocks of black anglerfish (Lophius budegassa) and white anglerfish (L. piscatorius) in north-eastern Atlantic waters
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Weight–lengthrelationships,weightconversionfactorsandsomaticindicesarepresentedfromadecade (2006 to 2015) for two stocks of Lophius budegassa and L.piscatorius in northern Iberian Atlantic waters (ICES Div. VIIIc–IXa2) and in Celtic Sea, south-western Ireland and Porcupine Bank (Div. VIIb,c,h,j,k). A total of 3298 L.budegassa and 7219 L.piscatorius were sampled from commercial landings and research surveys. Total length (Lt), total weight (Wt), ‘‘commercial’’ weight (Wgl) and ‘‘scientific’’ weight (Wg) were obtained. The parameters (a, b) in the power relationships weight–length for combined sexes in L.budegassa were: 0.020, 2.916; 0.017, 2.929; 0.017, 2.922 for Wt, Wgl and Wg respectively in Div. VIIIc–IXa2;0.025,2.841;0.013,2.984;0.013,2.971inDiv.VIIb,c,h,j,k.ForL.piscatorius:0.025,2.853;0.020, 2.868;0.024,2.861inDiv.VIIIc–IXa2;0.027,2.826;0.023,2.825;0.023,2.816inDiv.VIIb,c,h,j,k.Significant differences between stocks were found in both species. The conversion factors between ...
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