Title: Growth and length-weight relationships of Sander lucioperca (Linnaeus, 1758) in the Alcántara Reservoir, south-western Spain: comparison with other water bodies in Eurasia
Abstract:Growth parameters in pikeperch may be affected by several factors. The purpose of this study was to investigate the growth and length–weight of pikeperch in a reservoir in south-western Spain and comp...Growth parameters in pikeperch may be affected by several factors. The purpose of this study was to investigate the growth and length–weight of pikeperch in a reservoir in south-western Spain and compare the results with previous published data. Age and growth are described for Sander lucioperca from the Alcántara Reservoir (south-western Spain) from March to October 2009. A total of 285 fish were examined; the ratio of males to females was estimated as 0.78:1 and age ranges as 1–5 years. Total lengths ranged from 16.1 to 52.5 cm. The length–weight relationships were described as W = 0.00 462 TL3.09 (r = 0.9865) for males and W = 0.00279 TL3.16 (r = 0.9921) for females. Growth was expressed in length and the von Bertalanffy growth parameters were estimated as L∞ = 92.14 cm, k = 0.09, t0 = −1.05 for males and L∞ = 107.72 cm, k = 0.08, t0 = −1.16 for females. Growth performance indexes were also estimated as Φ' = 2.88 for males and Φ' = 2.96 for females. Differences in growth and length–weight relationships between sexes were not found.Read More