Length-Weight and Length-Length Relations of 14 Freshwater Fish Species from the Qiantang River, China

IF 0.7 4区农林科学 Q4 FISHERIES Journal of Applied Ichthyology Pub Date : 2024-06-25 DOI:10.1155/2024/4101501

Yangxin Dai, Nan Xie, Yulai Dai, Wei Guo, Jinyu Tang, Yuxi Wang

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Abstract

The Qiantang River, located in Zhejiang Province, China, is a crucial water resource with significant ecological and economic importance. This study aimed to evaluate fishery resources in the Qiantang River Basin by analyzing the length-weight relationships (LWRs) and length-length relationships (LLRs) of 14 fish species. Fish samples were collected between July 2021 and November 2023 using multipanel nylon gillnets and cage nets. Each specimen was measured for total length (TL) and standard length (SL), as well as weighed. Linear regression models were employed to estimate LWRs and LLRs, with statistical tests revealing significant relationships (P < 0.05) and high R² values above 0.91. The study contributed new LWRs for two species and LLRs for three, deepening our understanding of their biology. These findings enriched FishBase and offered valuable data for fish stock assessments and management strategies in the Qiantang River Basin. Future research can utilize this foundation to explore population dynamics and promote sustainable management practices.

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中国钱塘江 14 种淡水鱼类的长度-重量和长度-长度关系

钱塘江位于中国浙江省，是重要的水资源，具有重要的生态和经济意义。本研究旨在通过分析 14 种鱼类的长度-重量关系（LWR）和长度-长度关系（LLR）来评估钱塘江流域的渔业资源。鱼类样本采集于 2021 年 7 月至 2023 年 11 月，采用多板尼龙刺网和笼网。每个样本都测量了总长度（TL）和标准长度（SL），并称重。研究采用线性回归模型来估算 LWRs 和 LLRs，统计检验表明两者之间存在显著关系（P < 0.05），R2 值均高于 0.91。这项研究为两个鱼种提供了新的LWRs，为三个鱼种提供了LLRs，加深了我们对其生物学特性的了解。这些发现丰富了 FishBase，为钱塘江流域鱼类种群评估和管理策略提供了宝贵的数据。未来的研究可以利用这一基础探索种群动态，促进可持续管理实践。

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来源期刊

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

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.