关键词: 新疆, 阜康水库, 东方欧鳊, 生长特征

Abstract:

To evaluate the current status of Abramis brama orientalis Berg population in Fukang reservoir,Xinjiang Uygur Autonomous Region,and promote reasonable exploiting resources, based on 45 specimens collected in May 2021, the age composition and growth characteristics of A.brama orientalis Berg were studied. The results showed that the age composition of the captured A.brama orientalis Berg was 1⁺~4⁺ years old. Growth of A.brama orientalis Berg takes on a constant speed style. The relationship between body length and body mass relationship could be described by the following equations: W=0.020 8SL^{3.001 7}. Growth could be described by Von Bertalanffy equation with the growth parameters. Body length growth parameters: SL_∞=43.066 8 cm,k =0.180,t₀ =-0.179 5 years old. Body mass growth parameters: W_∞ =1 672.056 2 g,k =0.180,t₀ =-0.197 4 years old, ?= 5.811. The inflexion point of age for body mass growth and the corresponding body length and body mass was at 5.9 years old. The age of maximum biomass of the population was at t=4.4 years old. It was suggested that catchable age was 4 years old.

Key words: Xinjiang, Fukang reservoir, Abramis brama orientalis Berg, growth characteristics