Age, growth, and energy storage of the subterranean fish Triplophysa rosa (Cypriniformes: Nemacheilidae) from Chongqing, China

IF 3.4 Q1 Agricultural and Biological Sciences
Yuan Xu, Yangyang Jing, Jing Zhou, Rui Long, Juanzhu Meng, Ya Yang, Yiping Luo
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引用次数: 0

Abstract

This study explores the age, growth, and energy storage of Triplophysa rosa, a troglobitic cavefish. A total of 102 wild T. rosa specimens were collected in Wulong County, Chongqing, China, between 2018 and 2022, with otoliths used for age determination. The earliest mature individuals were determined to be 4.8 years old, while the maximum ages for females and males were estimated at 15.8 years and 12.2 years, respectively. The length (L, cm)-weight (W, g) relationship was found to be the same for both sexes, following the eq. W = 0.0046 L3.03. Von Bertalanffy growth models were applied to the total length-at-age data, resulting in an asymptotic length of 23.4 cm and a K-parameter of 0.060 year−1. The body content of protein, ash, and glycogen did not show a significant correlation with the total length of T. rosa. However, both lipid and energy content exhibited a significant increase with total length. The lipid content ranged from 40.5 to 167.1 mg g−1, while the energy content ranged from 4.50 to 11.39 kJ g−1, indicating high storage features of T. rosa. The results affirm that T. rosa exhibits life traits conducive to its population dynamics in cave conditions, characterized by slow growth, small size, and high lipid energy storage.
中国重庆地下鱼类胭脂鱼(鲤形目:胭脂鱼科)的年龄、生长和能量储存情况
本研究探讨了蛙穴鱼Triplophysa rosa的年龄、生长和能量储存。2018年至2022年期间,本研究在中国重庆市武隆县共采集了102个野生蛙穴鱼标本,并利用耳石进行了年龄测定。经测定,最早成熟个体的年龄为4.8岁,雌性和雄性的最大年龄分别为15.8岁和12.2岁。发现雌雄个体的体长(L,厘米)-体重(W,克)关系相同,公式为W = 0.0046 L3.03。冯-贝塔朗菲生长模型适用于总长度-年龄数据,得出渐近长度为 23.4 厘米,K 参数为 0.060 年-1。体内的蛋白质、灰分和糖原含量与蔷薇总长度没有明显的相关性。但是,脂质和能量含量随着总长度的增加而显著增加。脂质含量在 40.5 至 167.1 mg g-1 之间,能量含量在 4.50 至 11.39 kJ g-1 之间,这表明玫瑰茄具有较高的储藏特性。研究结果表明,玫瑰蛙具有生长缓慢、体型小、脂质能量储存高的特点,有利于其在洞穴条件下的种群动态发展。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
BMC Evolutionary Biology
BMC Evolutionary Biology 生物-进化生物学
CiteScore
5.80
自引率
0.00%
发文量
0
审稿时长
6 months
期刊介绍: BMC Evolutionary Biology is an open access, peer-reviewed journal that considers articles on all aspects of molecular and non-molecular evolution of all organisms, as well as phylogenetics and palaeontology.
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