姚氏高原鳅的年龄结构与生长特性
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作者单位:

1华中农业大学水产学院,武汉 430070;2华电金沙江上游水电开发有限公司叶巴滩分公司,甘孜 627153

作者简介:

赵子龙,E-mail:zhuwanying1999@163.com

通讯作者:

杨学芬,E-mail:xfy@mail.hzau.edu.cn

中图分类号:

S917.4

基金项目:

华电集团金沙江上游远期放流鱼种人工繁育技术研究项目(T-2022-04)


Age structure and growth characteristics of Triplophysa yaopeizhii
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Affiliation:

1College of Fisheries, Huazhong Agricultural University, Wuhan 430070, China;2Yebatan Branch of Huadian Jinshajiang Upstream Hydropower Development Co., Ltd., Ganzi 627153, China

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    摘要:

    为有效开展姚氏高原鳅(Triplophysa yaopeizhii)的资源保护工作,以微耳石作年龄鉴定材料,对采集自西昌安宁河的362尾姚氏高原鳅开展了年龄结构与生长特性研究。结果显示:姚氏高原鳅样本体长范围为3.3~10.7 cm,体质量范围为0.7~14.2 g;年龄范围为2~9龄,5~6龄为优势年龄,约占样本总数的42.27%。体长(L)与体质量(W)的拟合关系式为W=0.0126L2.9606R2=0.961 9,n=362),符合匀速生长特性。雌、雄群体体长、体质量与年龄之间差异不显著(P>0.05),通过von Bertalanffy生长方程拟合得到体长体质量生长方程:Lt=10.415[1-e-0.155(t+1.750)],Wt=12.981[1-e-0.155(t+1.750)2.9606;拐点年龄为5.248龄,与之对应的体长Li=6.895 cm,体质量Wi=3.827 g;表观生长指数φ为1.295,表明姚氏高原鳅生长缓慢,生长周期长。

    Abstract:

    The age structure and growth characteristics of 362 Triplophysa yaopeizhii speciments collected from the Anning River in Xichang were studied using otoliths for age determination. The main results were as follows: the body length of T. yaopeizhii ranged from 4.1 to 10.7 cm, and the body weight ranged from 0.7 to 14.2 g. The age of the speciments ranged from 2 to 9 years, with 5~6 years being the dominant age group, accounting for about 42.27% of the total samples. The relationship between body length and body weight was described by the equation W=0.0126L2.9606 R2=0.961 9, n=362), indicating isometric growth characteristics. There was no significant difference in age, body length, or body weight between the female and male groups (P>0.05). The von Bertalanffy growth equation was used to fit the growth equation of body length and body weight as follows: Lt=10.415[1-e-0.155(t+1.750)],Wt=12.981[1-e-0.155(t+1.750)2.9606. The inflection point occurred at 5.248 years of age, with a corresponding body length Li=6.895 cm and body weight Wi=3.827 g. The apparent growth index φ was 1.295. These findings indicate that the growth of T. yaopeizhii is slow and characterized by a long cycle. These results provide a foundational basis for the artificial breeding, stock enhancement, and resource conservation of T. yaopeizhii in the Jinsha River basin.

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赵子龙,熊皓,刘季松,杨瑞斌,杨学芬.姚氏高原鳅的年龄结构与生长特性[J].华中农业大学学报,2026,45(2):1-8

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  • 收稿日期:2025-04-23
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  • 在线发布日期: 2026-04-07
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