印度马纳尔湾海域用延绳钓捕获的三种底栖礁鱼的长度-重量关系

IF 0.7 4区 农林科学 Q4 FISHERIES
Thangaraji Ravikumar, Neethirajan Neethiselvan, Natarajan Jayakumar, Sudhan Chandran, Umamaheswari Thavasiyandi, Pandurangan Padmavathy
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引用次数: 1

摘要

对在印度马纳尔湾捕获的三种珊瑚鱼进行了长度-重量关系的估计,使用实验延绳钓。延绳钓于2019年12月至2021年9月进行,每隔两周进行一次,使用延绳钓(每条2400米、2700米和3360米),每条配有600个不同的“J”型鱼钩(直、反、斜)。使用的挂钩尺寸是标准尺寸编号6,9和12。采用聚酰胺单丝线制作的延绳钓每次作业深度为20 ~ 50米,作业时间为3 ~ 5小时。总共在45次捕鱼试验中部署了81,000个鱼钩。混合性组的总体长和总体重分别接近0.1 cm和0.01 g。利用对数变换后的数据进行线性回归分析,计算3种鱼类的a和b值,建立长度-权重关系。给出了三个物种的长度-权重方程的参数以及各自的相关系数和95%置信区间。石斑鱼(Epinephelus faveatus, 36.5 cm)和石斑鱼(Cephalopholis urodeta, 46.0 cm)两种石斑鱼的最大体长均为新纪录。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Length-weight relationships of three demersal reef fishes caught by longline inhabiting the marine waters of gulf of Mannar, India

The length-weight relationships were estimated for three reef fish species caught in the Gulf of Mannar, India using experimental longlines. The longline fishing took place from December, 2019 to September, 2021 in fortnightly intervals, using longlines (2400 m, 2700 m and 3360 m each), equipped with each 600 various “J” type fishing hooks (straight, reversed, kirbed). The hook sizes used were standard size numbers 6, 9, and 12. The longlines fabricated with polyamide monofilament line were operated from 20 to 50 m depth for 3–5 hours each time. Overall, 81,000 hooks were deployed in 45 fishing trials. The total length and total weight of the combined sex group was recorded nearest to 0.1 cm and 0.01 g, respectively. By using the logarithmic transformed data, linear regression analysis was performed to calculate a and b values for three fish species to establish length-weight relationships. The parameters for the length-weight equations for three species are provided along with respective coefficient of correlation and the 95% confidence intervals. A new maximum total length was recorded for two grouper species, viz., Epinephelus faveatus (36.5 cm) and Cephalopholis urodeta (46.0 cm).

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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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