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- W2352582021 abstract "The results of fishery biology of Acipenser schrencki based on 155 specimens from the middle reaches of Heilongjiang river in 2001,are studied in this paper, and summarized as follows: In the capture population average individual body length is 153.9cm (1105～232cm), average individual body weight is 17.07kg(5.95～62.65kg). Average age is 16.9 in fish capture population, (between 8 years old and 29 years old). The relation between body weight and total length is the exponential function. The formula is W=6.961 4×10~(-6)×L~(2.9281),sex rate is 1∶1.8. The absolute fecundity varies from 6 200 to 1 318 350 eggs with a mean of 433 496.7 eggs, and the relative fecundity ranges from 6 893 to 15 694 eggs/kg with a mean of 11 173.3 eggs/kg, average diameter of ova is (3.65) mm(3.0～(4.5mm)),average gonadosomatic indices of is 22.49%. The number of capture population is 620 individuals, about 12 ton. As result shows above, the number of capture population is decreasing." @default.
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- W2352582021 date "2005-01-01" @default.
- W2352582021 modified "2023-09-28" @default.
- W2352582021 title "Study on the capture population structure of Acipenser schrencki Brandt in Heilongjiang River" @default.
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