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| Study on Annual Growth Characteristics of Pond-culture Bahaba taipingensis Juvenile |
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| DOI：10.16768/j.issn.1004-874X.2023.03.015 |
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| Abstract: |
| 【Objective】The study was conducted to explore the annual growth characteristics of pond-cultured rich the basic data of culture biology so as to provide references for the artificial pond culture and breeding of Bahaba taipingensis, and further protect and use the germplasm resources of B. taipingensis.【Method】Taking the B. taipingensis juveniles artificially cultured for less than one year as research materials, the growth parameters such as body length and body mass of pond-cultured B. taipingensis juveniles were measured regularly within one year, and the annual growth characteristics of B. taipingensis juveniles were analyzed.【Result】The initial average body length and average body mass of juveniles of B. taipingensis were increased from 4.56 (±0.54) cm to 30.22 (±4.32) cm and 10.63 (±0.91) g to 1 085.73 (±328.55) g after 365 days of growth. The body length was increased by 562.16%, with an average daily growth of 0.07 cm. The specific growth rate of body length ranged from 0.08%/d to1.08%/d, and the variation coefficient of body length ranged from 7.83% to 14.31%. The body mass was increased by 10 117.06 %, with an average daily growth of 2.95g. The specific growth rate of body mass ranged from 0.68%/d to 2.77%/d and the variation coefficient of body mass ranged from 8.53% to 33.37%. The specific growth rate and variation coefficient of body mass were greater than those of body length, and the annual change of fatness ranged from 2.21% to 11.18%. The body length of B. taipingensis juvenile was shown to be correlated with body
mass in a power function: m=0.3783L2.2363, (R2=0.9705, b= 2.2363 ＜ 3), with a negative allometric growth stage. There was linear relationship between the total length (LT) and body length (L): LT =1.1918L+0.2809 (R2=0.9986). There was quadratic function between the total length (LT) and age (t): LT=-0.0002t2+0.159t+4.6652 (R2=0.9791), quadratic function between body length (L) and age (t): L=-0.0002t2+0.1294t+3.7988 (R2=0.9865), and quadratic function between body mass (m) and age (t): m=0.0076t2+0.0618t+28.915 (R2=0.9956).【Conclusion】The B. taipingensis juvenile under artificial pond-cultureconditions grow well within one year, being at negative allometric growth stage. |
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