辽宁杂色杜父鱼年龄结构与生长特征的初步研究

简梓聪 ,  骆小年 ,  段友健 ,  李姣 ,  董睿欣 ,  赵林智 ,  田姜润嵩 ,  李剑桥 ,  王美淇

南京师大学报(自然科学版) ›› 2026, Vol. 49 ›› Issue (5) : 67 -78.

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南京师大学报(自然科学版) ›› 2026, Vol. 49 ›› Issue (5) : 67 -78. DOI: 10.3969/j.issn.1001-4616.2026.05.008

辽宁杂色杜父鱼年龄结构与生长特征的初步研究

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Preliminary Study on Age Structure and Growth Characteristics of Cottus poecilopus Heckel in Liaoning Province

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摘要

为研究辽宁杂色杜父鱼的年龄结构和生长特征,于 2024 年 10 月—11 月及 2025 年 4 月—5 月,在辽宁苏子河(SZH)、蒲石河(PSH)、太子河(TZH)流域采集样本 715 尾,以其矢耳石作为年龄判读材料开展系统分析.结果显示:雌性个体体长分布为 52.00~121.50mm,体质量为 2.65~30.37g;雄性体长为 54.50~ 136.00mm,体质量为 2.71~47.60g. 雌雄群体的年龄跨度均为 1~5A,体长-体质量关系式为 WT =8.520×10-6L3.203(R2 =0.898,n=715). 采用 von Bertalanffy 生长方程拟合得到,雌、雄杂色杜父鱼渐进体长(L∞ )分别为 148.50、134.20mm,渐进体质量(W∞ )分别为 72.34、54.67g,生长系数(k) 分别为 0.352、0.418,理论上体长等于 0 时的年龄(T0) 分别为 -0.156、-0.124A. 通过生长加速度方程推算,雌、雄个体的生长拐点年龄分别约为 3.01、2.59A,对应体长分别为 99.80、91.10mm,体质量分别为 21.37、16.22g. 综上,辽宁杂色杜父鱼具有年龄结构简单、生长迅速的特点,属于小型淡水鱼类.

Abstract

To investigate the age structure and growth characteristics of Cottus poecilopus Heckel in Liaoning Province, a total of 715 specimens were collected from the Suzi River (SZH), Pushi River (PSH), and Taizi River (TZH) during October-November 2024 and April-May 2025. Sagittal otoliths were used as the primary material for age determination. The results showed that the standard length of females ranged from 52.00 mm to 121.50 mm, with body mass ranging from 2.65 g to 30.37 g; for males, the standard length ranged from 54.50 mm to 136.00 mm, and body mass ranged from 2.71 g to 47.60 g. The age span of both sexes was 1-5 years. The length-weight relationship was expressed as WT = 8.520×10-6L3.203 (R2 = 0.898, n=715). The von Bertalanffy growth function was applied to estimate growth parameters, including asymptotic length (L∞) and asymptotic weight (W∞) were 148.50 mm and 72.34 g for females, 134.20 mm and 54.67 g for males, respectively; the growth coefficient (k) was 0.352 for females and 0.418 for males; the theoretical age at zero length (t0) was -0.156 years for females and -0.124 years for males. Based on the growth acceleration equation, the inflection point ages were approximately 3.01 years for females and 2.59 years for males, corresponding to lengths of 99.80 mm and 91.10 mm, and body masses of 21.37 g and 16.22 g, respectively. In conclusion, Cottus poecilopus Heckel in Liaoning Province exhibits a simple age structure and rapid growth, characteristic of a small-sized fish species.

关键词

杂色杜父鱼 / 年龄 / 生长 / 生长拐点 / 生长参数

Key words

Cottus poecilopus Heckel / age / growth / growth inflection point / growth parameters

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简梓聪,骆小年,段友健,李姣,董睿欣,赵林智,田姜润嵩,李剑桥,王美淇. 辽宁杂色杜父鱼年龄结构与生长特征的初步研究[J]. 南京师大学报(自然科学版), 2026, 49(5): 67-78 DOI:10.3969/j.issn.1001-4616.2026.05.008

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基金资助

2025 年辽宁省科技重大专项(2025JH1/11700001)

2024 年辽宁省科技计划联合计划项目(技术攻关计划项目)(2024JH2/10260084)

“兴辽英才计划”项目(XLYC2413055)

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