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<p>This study investigated the biological characteristics of <i>Cepola macrophthalma</i> population sampled from Güllük Bay (Aegean Sea). Analyses were conducted on a total of 372 individuals (121 females, 251 males), evaluating length-weight relationships, sex ratio, and growth parameters. The length-weight relationship was determined as W = 0.0082 × TL<sup>2.306</sup> for females, W = 0.0238 × TL<sup>1.887</sup> for males, and W = 0.0186 × TL<sup>1.986</sup> for the combined population. The sex ratio was 1:2.07 (female: male), with statistical analysis revealing a significant male dominance. Von Bertalanffy growth parameters were calculated as L<sub>∞</sub> = 41.37&#xa0;cm, K = 0.256 year⁻¹, t₀ = -1.172 for the combined population; L<sub>∞</sub> = 29.05&#xa0;cm, K = 0.453 year⁻¹, t₀ = -1.082 for females; and L<sub>∞</sub> = 41.37&#xa0;cm, K = 0.269 year⁻¹, t₀ = -1.074 for males. The growth performance index (φ′) was 2.76 for the combined population, 2.85 for females, and 2.79 for males. The results indicated differences in growth patterns between female and male individuals. Females exhibited lower asymptotic length but higher growth coefficients, whereas males reached higher maximum lengths with lower growth coefficients.</p>

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Age and Growth of Red Bandfish (Cepola Macrophthalma Linnaeus, 1758) in the Southern Aegean Sea (Güllük Bay, Türkiye)

  • 期刊论文

  • 发表日期：

    2026年2月10日

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  • Hasan Cerim,
  • Sercan Yapici,
  • Özgen Yilmaz,
  • İsmail Reis,
  • Ferhat Yalgin,
  • Anıl Gülşahin

摘要

This study investigated the biological characteristics of Cepola macrophthalma population sampled from Güllük Bay (Aegean Sea). Analyses were conducted on a total of 372 individuals (121 females, 251 males), evaluating length-weight relationships, sex ratio, and growth parameters. The length-weight relationship was determined as W = 0.0082 × TL2.306 for females, W = 0.0238 × TL1.887 for males, and W = 0.0186 × TL1.986 for the combined population. The sex ratio was 1:2.07 (female: male), with statistical analysis revealing a significant male dominance. Von Bertalanffy growth parameters were calculated as L∞ = 41.37 cm, K = 0.256 year⁻¹, t₀ = -1.172 for the combined population; L∞ = 29.05 cm, K = 0.453 year⁻¹, t₀ = -1.082 for females; and L∞ = 41.37 cm, K = 0.269 year⁻¹, t₀ = -1.074 for males. The growth performance index (φ′) was 2.76 for the combined population, 2.85 for females, and 2.79 for males. The results indicated differences in growth patterns between female and male individuals. Females exhibited lower asymptotic length but higher growth coefficients, whereas males reached higher maximum lengths with lower growth coefficients.