Growth, Mortality and Stock Assessment of Squaliobarbus curriculus (Actinopterygii: Cypriniformes: Xenocyprididae) from Lanxi Section of Qiantang River, China
Population dynamics parameters and stock status of Squaliobarbus curriculus (Richardson,1846) were analyzed from May to September 2021 in the Lanxi section of Qiantang River. FiSAT II software
program was used. The growth coefficient K = 0.21 year–1, asymptomatic length L∞ = 39.48 cm, and age at theoretical zero-length t0 = –0.74 years were
estimated. The von Bertalanffy growth function was calculated as Lt =39.48[1 – e–0.21(t + 0.74)]. The growth curve for
weight had an inflection at 5.86 years, corresponding to 29.61 cm in standard
length and 372.29 g in weight. The natural mortality rate (M), the fishing mortality rate (F),
and the total mortality rate (Z) were
calculated as 0.51, 0.61, and 1.12 year
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