The Length-Weight Relationships of Twelve Fish Species from the Heishui River, China

IF 0.7 4区 农林科学 Q4 FISHERIES Journal of Applied Ichthyology Pub Date : 2024-02-17 DOI:10.1155/2024/6667189
Yongmeng Wang, Xinglin Pan, Huiwu Tian, Meng Wang, Zhijun Jin, Chenyu Lin, Dongqing Li, Zhimin Li, Li Chang, Fan Chen, Xiaotao Shi
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Abstract

Length-weight relationships are presented for twelve fish species collected at 22 sampling points in the Heishui River, a priority tributary for fish conservation in the mainstream of the Baihetan Reservoir area, China. A combination of gill nets was used for sampling over a period between November 2018 and May 2021. The gill nets consisted of 12 nets per point with dimensions of 20 × 2 m (length and width), mesh size ranging from 20 to 80 mm, and soaking depth ranging from 40 to 160 cm. In addition, fixed gill nets were employed, with 10 nets per point having dimensions of 10 to 30 m in length and 1.5 to 2.5 m in width. The mesh size of these fixed gill nets was 10, 15, or 20 mm. This study presents the length-weight relationships of twelve species for the first time in the Heishui River Basin, including the new maximum body length of Pseudorasbora parva (Temminck and Schlegel, 1846). The slope (b) values for the assessed species ranged from 2.5 to 3.5. All the estimated relationships are highly significant (P < 0.05) with a high coefficient of determination R2 ranging from 0.9574 to 0.9997. It is expected that the results obtained from this study will contribute to filling the knowledge gap in this area and also assist fisheries scientists in future assessment studies.

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中国黑水河十二种鱼类的长重关系
本文介绍了在中国白鹤滩库区主流鱼类保护重点支流黑水河 22 个采样点采集的 12 种鱼类的长度-重量关系。在 2018 年 11 月至 2021 年 5 月期间,采用刺网组合采样。刺网每点 12 张,规格为 20 × 2 米(长宽),网目尺寸从 20 毫米到 80 毫米不等,浸泡深度从 40 厘米到 160 厘米不等。此外,还使用了定刺网,每个点 10 个,长 10 至 30 米,宽 1.5 至 2.5 米。这些定置刺网的网目尺寸为 10、15 或 20 毫米。本研究首次展示了黑水河流域 12 个物种的长度-重量关系,其中包括 Pseudorasbora parva(Temminck 和 Schlegel,1846 年)的新最大体长。评估物种的斜率(b)值在 2.5 至 3.5 之间。所有估计关系都非常显著(P<0.05),决定系数 R2 从 0.9574 到 0.9997 不等。预计本研究获得的结果将有助于填补该领域的知识空白,并有助于渔业科学家开展未来的评估研究。
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来源期刊
Journal of Applied Ichthyology
Journal of Applied Ichthyology 生物-海洋与淡水生物学
CiteScore
2.30
自引率
11.10%
发文量
73
审稿时长
3-8 weeks
期刊介绍: The Journal of Applied Ichthyology publishes articles of international repute on ichthyology, aquaculture, and marine fisheries; ichthyopathology and ichthyoimmunology; environmental toxicology using fishes as test organisms; basic research on fishery management; and aspects of integrated coastal zone management in relation to fisheries and aquaculture. Emphasis is placed on the application of scientific research findings, while special consideration is given to ichthyological problems occurring in developing countries. Article formats include original articles, review articles, short communications and technical reports.
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