Length-Weight Relationships and Growth Patterns of Eight Indigenous Fish Species from Lancang River, Southwest China

IF 0.7 4区 农林科学 Q4 FISHERIES
H.-P. Ding, Tian Zhong, Yang Yang, Dexiang Ge, Jingya Wen, Chengyuan Zhao, Jun Liu, Zhiming Zhang
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引用次数: 0

Abstract

The Lancang-Mekong River watershed has extremely high fish biodiversity. With the rapid population growth and economic development in the river basin, fish diversity and fishery resources of this river are experiencing serious threats. Basic biological information on most fish species in the Lancang River, required to improve conservation in this area, is limited. This study aimed to provide new estimates of length-weight relationships (LWRs) by using the linear regression of W = aLb for eight indigenous fish species from the Lancang River, Southwest China. From 2018 to 2021, 534 specimens belonging to 3 families and 8 genera were collected using various types of fishing techniques. Standard length (SL) and body weight (BW) of each specimen were measured to the nearest 0.1 cm and 0.1 g, respectively. This study presents the first public records of LWR parameters of Schizothorax lissolabiatus, Poropuntius huangchuchieni, Tor sinensis, Scaphiodonichthys acanthopterus, Mystacoleucus lepturus, Hemiculterella macrolepis, Glyptothorax lampris, and Schistura porthos. The range of b values for the LWRs was 2.5378–3.1732, and the r2 values for all LWRs estimates ranged from 0.9102 to 0.9952. Intraspecific difference of b values across population and/or season was observed in S. lissolabiatus, T. sinensis, P. huangchuchieni, S. acanthopterus, and M. lepturus. The range of mean condition factor (K) and mean relative weight (Wr) was 0.97–2.39 and 100.29–108.18, respectively. This study updated information for FishBase and provided new record of maximum standard length for five species, namely, S. lissolabiatus, P. huangchuchieni, T. sinensis, S. acanthopterus, and M. lepturus. The findings of this study are essential for the management and conservation of locally indigenous fish and fisheries.
中国西南澜沧江八种土著鱼类的长重关系和生长模式
澜沧江-湄公河流域的鱼类生物多样性极高。随着流域内人口的快速增长和经济的快速发展,该流域的鱼类多样性和渔业资源正面临严重威胁。澜沧江中大多数鱼类物种的基本生物信息十分有限,而这正是改善该地区鱼类保护工作所必需的。本研究旨在利用 W = aLb 的线性回归方法,对中国西南澜沧江 8 种土著鱼类的长度-重量关系(LWR)进行新的估算。从 2018 年到 2021 年,采用不同类型的捕捞技术采集了隶属于 3 科 8 属的 534 个标本。每个标本的标准长度(SL)和体重(BW)分别测量到最接近的 0.1 厘米和 0.1 克。本研究首次公开记录了Schizothorax lissolabiatus、Poropuntius huangchuchieni、Tor sinensis、Scaphiodonichthys acanthopterus、Mystacoleucus lepturus、Hemiculterella macrolepis、Glyptothorax lampris和Schistura porthos的LWR参数。LWRs 的 b 值范围为 2.5378-3.1732,所有 LWRs 估计值的 r2 值范围为 0.9102 至 0.9952。在S. lissolabiatus、T. sinensis、P. huangchuchieni、S. acanthopterus和M. lepturus中观察到不同种群和/或季节b值的种内差异。平均条件因子(K)和平均相对重量(Wr)的范围分别为 0.97-2.39 和 100.29-108.18。该研究更新了鱼类数据库的信息,并提供了五种鱼类的最大标准体长的新记录,这五种鱼类是S. lissolabiatus、P. huangchuchieni、T. sinensis、S. acanthopterus和M. lepturus。这项研究的结果对当地土著鱼类和渔业的管理和保护至关重要。
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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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