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<p>The present study elucidates length–weight relationship (LWR) and relative condition factor (<i>Kn</i>) of&#xa0;20&#xa0;carangid fish species from two major fish landing centres along the coast of Gulf of Mannar, southeast coast of India. The sampling was carried out biweekly between June 2023 and May 2024 with commercial bottom trawl nets and bottom-set gill nets. Among the 20 species, LWR were established for 7 carangid species, (<i>Alectis ciliaris, Atropus armatus, Caranx sexfasciatus, C. tille, Platycaranx talamparoides, Scyris indica</i> and <i>Turrum coeruleopinnatum</i>) for the first time in Indian coast. Additionally, new maximum length (L<sub>max</sub>) were recorded for three species namely <i>Atule mate, Caranx tille</i> and <i>Scomberoides commersonnianus</i> along the Indian coast. The slope value ‘<i>b</i>’ ranged from 2.5632 (<i>Ferdauia ferdau</i>) to 3.2952 (<i>Turrum coeruleopinnatum</i>). Furthermore, all species, with the exception of <i>Decapterus russellii</i> (0.9488), exhibited <i>Kn</i> values of ‘1’ indicating that the environmental growth conditions were suitable for fish growth. These findings are crucial for assessing the relative condition of these fish stocks and developing conservation and management plans for&#xa0;their sustainable exploitation in the region.</p>

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Length–Weight Relationship and Relative Condition Factor of 20 Carangid Fish Species from the Gulf of Mannar, Southeast Coast of India

  • 期刊论文

  • 发表日期：

    2025年4月28日

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  • J Joyson Paul,
  • R Durairaja,
  • N Jayakumar,
  • K V. Venkataramani,
  • Thangaraji Ravikumar,
  • M Sharumathi,
  • Kishore Kumar,
  • Sanjay Chandravanshi,
  • Adyasha Sahu,
  • C Sudhan

摘要

The present study elucidates length–weight relationship (LWR) and relative condition factor (Kn) of 20 carangid fish species from two major fish landing centres along the coast of Gulf of Mannar, southeast coast of India. The sampling was carried out biweekly between June 2023 and May 2024 with commercial bottom trawl nets and bottom-set gill nets. Among the 20 species, LWR were established for 7 carangid species, (Alectis ciliaris, Atropus armatus, Caranx sexfasciatus, C. tille, Platycaranx talamparoides, Scyris indica and Turrum coeruleopinnatum) for the first time in Indian coast. Additionally, new maximum length (Lmax) were recorded for three species namely Atule mate, Caranx tille and Scomberoides commersonnianus along the Indian coast. The slope value ‘b’ ranged from 2.5632 (Ferdauia ferdau) to 3.2952 (Turrum coeruleopinnatum). Furthermore, all species, with the exception of Decapterus russellii (0.9488), exhibited Kn values of ‘1’ indicating that the environmental growth conditions were suitable for fish growth. These findings are crucial for assessing the relative condition of these fish stocks and developing conservation and management plans for their sustainable exploitation in the region.