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<p>This study provides preliminary data on the length–weight relationship (LWR) and condition factor (CF) for <i>Siganus vermiculatus</i> from the Andaman and Nicobar Islands’ south coast. A total of 172 specimens (107 males and 65 females) were collected monthly from May to October 2023. The sex ratio showed significant male bias (1:1.6; χ² = 10.26, <i>p</i> = 0.001). LWR analysis revealed positive allometric growth in the overall population (b = 3.066 ± 0.020) and males (b = 3.065 ± 0.018), while females exhibited isometric growth (b = 3.082 ± 0.049, <i>p</i> &gt; 0.05). Condition factor (K<sub>n</sub>) values were close to 1 (1.001 ± 0.003 overall, 1.001 ± 0.003 for males, 1.000 ± 0.005 for females), indicating favourable environmental conditions. This comprehensive information on LWR and CF of <i>S. vermiculatus</i> establishes baseline data for the species from the Andaman waters. These findings are vital for assessing population dynamics, ecological studies, and sustainable fisheries management, contributing significantly to fishery biology.</p>

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Preliminary Assessment of Length–Weight Relationships and Condition Factors of Siganus vermiculatus (Valenciennes, 1835) in Andaman Waters, India

  • 期刊论文

  • 发表日期：

    2026年4月9日

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  • P. A. Habeebu Rahman,
  • Samrat Kalita,
  • Abhijith Mohan,
  • V. S. Arjun

摘要

This study provides preliminary data on the length–weight relationship (LWR) and condition factor (CF) for Siganus vermiculatus from the Andaman and Nicobar Islands’ south coast. A total of 172 specimens (107 males and 65 females) were collected monthly from May to October 2023. The sex ratio showed significant male bias (1:1.6; χ² = 10.26, p = 0.001). LWR analysis revealed positive allometric growth in the overall population (b = 3.066 ± 0.020) and males (b = 3.065 ± 0.018), while females exhibited isometric growth (b = 3.082 ± 0.049, p > 0.05). Condition factor (Kn) values were close to 1 (1.001 ± 0.003 overall, 1.001 ± 0.003 for males, 1.000 ± 0.005 for females), indicating favourable environmental conditions. This comprehensive information on LWR and CF of S. vermiculatus establishes baseline data for the species from the Andaman waters. These findings are vital for assessing population dynamics, ecological studies, and sustainable fisheries management, contributing significantly to fishery biology.