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<p>The present study evaluated the growth performance and improve production of Asian seabass, <i>Lates calcarifer</i> using bioencapsulated microalgae in the marine cladoceran, <i>Penilia</i> sp. The marine cladoceran, <i>Penilia</i> sp<i>.</i>, isolated from Adyar creek, Chennai, was fed four species of microalgae consisting of <i>Chlorella marina</i>, <i>Nannochloropsis oculata</i>, <i>Isochrysis galbana</i> and <i>Tetraselmis suecica</i>. <i>Penilia</i> sp. fed each microalgae species were used as a diet for seabass (<i>Lates calcarifer</i>) larvae and their growth, survival, proximate composition and fatty acids profiles were recorded. The highest fecundity was observed in <i>N. oculata</i> and <i>C. marina</i> (1–3 × 10<sup>5&#xa0;</sup>cells mL<sup>−1</sup>) fed <i>Penilia</i> sp. (8 and 10 individuals/broodstock) followed by <i>I. galbana</i> and <i>T. suecica</i> fed <i>Penilia</i> sp. The species attained maturity within 7&#xa0;days in <i>N. oculata</i> fed <i>Penilia</i> sp. followed by <i>C. marina</i> (7&#xa0;days), <i>I. galbana</i> (9&#xa0;days) and <i>T. suecica</i> (9&#xa0;days) fed <i>Penilia</i> sp. Mass culture of <i>Penilia</i> sp. carried out using microalgae diets revealed a maximum population density 37.3 ± 0.2 individuals mL<sup>−1</sup> recorded within 7&#xa0;days for <i>N. oculata</i> fed <i>Penilia</i> sp. followed by <i>C. marina</i> (35.4 ± 0.18 individuals mL<sup>−1</sup>) fed <i>Penilia</i> sp. Subsequently, seabass larvae fed with <i>N. oculata</i> encapsulated <i>Penilia</i> sp. exhibited significantly higher (<i>p</i> &lt; <i>0.05</i>) concentrations of docosahexaenoic acid, oleic acid, and palmitic acid in both 2 &amp; 13&#xa0;days of post-hatch larvae, whereas seabass larvae fed with <i>C. marina</i> encapsulated <i>Penilia</i> sp. showed significantly lower docosahexaenoic acid, oleic acid and stearic acid at 2&#xa0;days &amp; 13&#xa0;days post hatch larvae. Furthermore, <i>N. oculata</i> encapsulated <i>Penilia</i> sp. fed seabass larvae had the highest specific growth rate ( 2.2 ± 0.06% day<sup>−1</sup>) and survival (95.8 ± 0.45%) during the early larval stages of <i>L. calcarifer</i>, and this study demonstrated the suitability of <i>Penilia</i> sp. for use as live feed in larval rearing of Asian seabass and also benefits to the aquaculture industry.</p>

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Application of bioencapsulated microalgae in marine cladoceran (Penilia sp.) for enhancing growth and improve production of Asian seabass (Lates calcarifer)

  • 期刊论文

  • 发表日期：

    2026年4月13日

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  • K. Nanthini Devi,
  • P. Santhanam,
  • A. Shenbaga Devi,
  • P. Raju,
  • R. Sagaya Princy,
  • K. Rajagopal,
  • I. S. Bright Singh,
  • A. S. Sahul Hameed,
  • A. Jishnu Panamoly,
  • P. Perumal

摘要

The present study evaluated the growth performance and improve production of Asian seabass, Lates calcarifer using bioencapsulated microalgae in the marine cladoceran, Penilia sp. The marine cladoceran, Penilia sp., isolated from Adyar creek, Chennai, was fed four species of microalgae consisting of Chlorella marina, Nannochloropsis oculata, Isochrysis galbana and Tetraselmis suecica. Penilia sp. fed each microalgae species were used as a diet for seabass (Lates calcarifer) larvae and their growth, survival, proximate composition and fatty acids profiles were recorded. The highest fecundity was observed in N. oculata and C. marina (1–3 × 105 cells mL−1) fed Penilia sp. (8 and 10 individuals/broodstock) followed by I. galbana and T. suecica fed Penilia sp. The species attained maturity within 7 days in N. oculata fed Penilia sp. followed by C. marina (7 days), I. galbana (9 days) and T. suecica (9 days) fed Penilia sp. Mass culture of Penilia sp. carried out using microalgae diets revealed a maximum population density 37.3 ± 0.2 individuals mL−1 recorded within 7 days for N. oculata fed Penilia sp. followed by C. marina (35.4 ± 0.18 individuals mL−1) fed Penilia sp. Subsequently, seabass larvae fed with N. oculata encapsulated Penilia sp. exhibited significantly higher (p < 0.05) concentrations of docosahexaenoic acid, oleic acid, and palmitic acid in both 2 & 13 days of post-hatch larvae, whereas seabass larvae fed with C. marina encapsulated Penilia sp. showed significantly lower docosahexaenoic acid, oleic acid and stearic acid at 2 days & 13 days post hatch larvae. Furthermore, N. oculata encapsulated Penilia sp. fed seabass larvae had the highest specific growth rate ( 2.2 ± 0.06% day−1) and survival (95.8 ± 0.45%) during the early larval stages of L. calcarifer, and this study demonstrated the suitability of Penilia sp. for use as live feed in larval rearing of Asian seabass and also benefits to the aquaculture industry.