Morphometric Characteristics, Length-Weight Relationships, and Condition Factors of Five Indigenous Fish Species from the River Ganga in Bihar, India

IF 0.7 4区 农林科学 Q4 FISHERIES
S. K. Ahirwal, Jaspreet Singh, K. Sarma, Tarkeshwar Kumar, V. Bharti, Amrendra Kumar
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Abstract

Morphometric characteristics, length-weight relationships (LWRs), and condition factors (K) were studied for five indigenous fish species belonging to five different families (Barilius barila Hamilton, Cirrhinus reba Hamilton, Chanda nama Hamilton, Mystus bleekeri Day, and Clupisoma garua Hamilton), from the River Ganga in Bihar, India. A total of 557 fish individuals were collected seasonally from September 2021 to August 2022 using a monofilament drift gill net and a conical trap net Khairel jal. In morphometric analysis, the highest degree of correlation was observed between the total length and the standard length for all species (except C. garua). The estimated exponent value b varies from 2.920 to 3.214, where the slopes of regression lines among the species have significant differences ( p < 0.0001 ). The b value indicated that three species (B. barila, C. nama, and C. garua) follow positive allometric growth, whereas M. bleekeri shows isometric growth and C. reba exhibits negative allometric growth. The condition factor value for these fishes ranged from 0.67 to 0.98, which indicated that the population of C. reba was robust compared to all other species ( p < 0.0001 ). A new maximum length (146.8 mm) was obtained for B. barila from India. The present study gives baseline biological information on five commercially important indigenous fish species found in the River Ganga, Bihar. As the population of these species has been dwindling in recent times, these data will be important for the conservation and sustainable utilization of these important species in the long run.
印度比哈尔邦恒河五种本地鱼类的形态特征、长重关系和条件因素
研究了来自印度比哈尔邦恒河的五种本地鱼类(Barilius barila Hamilton、Cirrhinus reba Hamilton,Chanda nama Hamilton和Mystus bleekeri Day以及Clupisoma garua Hamilton)的形态计量学特征、长重关系(LWR)和条件因子(K)。从2021年9月到2022年8月,使用单丝漂移刺网和锥形捕获网Khairel jal季节性收集了557条鱼。在形态计量分析中,所有物种(C.garua除外)的总长度和标准长度之间的相关性最高。估计的指数值b在2.920到3.214之间变化,其中物种之间的回归线斜率存在显著差异(p<0.0001)。b值表明,三个物种(b.barila、C.nama和C.garua)遵循正异速生长,而M.bleekeri表现出等距生长,C.reba表现出负异速生长。这些鱼类的条件因子值在0.67到0.98之间,这表明与所有其他物种相比,瑞巴的种群是稳健的(p<0.0001)。新的最大长度(146.8 mm)从印度获得B.barila。本研究提供了比哈尔邦恒河中发现的五种具有商业重要性的本土鱼类的基线生物信息。由于这些物种的数量近年来一直在减少,从长远来看,这些数据对这些重要物种的保护和可持续利用至关重要。
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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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