Scholarlink

<p>This work aimed to evaluate tissue restoration in the gills and hepatopancreas of juvenile <i>Penaeus vannamei</i> during long-term exposure to high alkalinity. A 30-day experiment was conducted using four experimental groups with three replicates each: T120 (control), T200, T300, and T400, corresponding to alkalinity levels of 120, 200, 300, and 400&#xa0;mg CaCO₃/L, respectively, adjusted with sodium bicarbonate (NaHCO₃). Juveniles (<i>n</i> = 336; 1.5 ± 0.8&#xa0;g) were stocked at 28 shrimp/m<sup>2</sup> in 60 L tanks with filtered seawater. Tanks were continuously aerated, and water temperature was maintained at 27 ± 1&#xa0;°C. Shrimp were fed a commercial diet (35% crude protein) four times daily. Histological samples were collected on Days 0, 14, and 30. Shrimp at 200 and 300&#xa0;mg CaCO₃/L exhibited reversible morphological changes in both organs, whereas those at 400&#xa0;mg CaCO₃/L showed pronounced tissue damage, with only partial hepatopancreas recovery after 30&#xa0;days. These results indicate that <i>P. vannamei</i> exhibits a concentration-dependent capacity for tissue recovery under sustained high alkalinity, maintaining structural integrity up to approximately 300&#xa0;mg CaCO₃/L.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Concentration-dependent recovery of gills and hepatopancreas in juvenile Penaeus vannamei during long-term exposure to high alkalinity

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年11月10日

查看全文
  • Dayanna Vera,
  • Laura López-Galindo,
  • Raúl Claro,
  • Samuel Sánchez,
  • Misael Rosales-Leija,
  • Adriana Ferreira da Silva,
  • André Braga

摘要

This work aimed to evaluate tissue restoration in the gills and hepatopancreas of juvenile Penaeus vannamei during long-term exposure to high alkalinity. A 30-day experiment was conducted using four experimental groups with three replicates each: T120 (control), T200, T300, and T400, corresponding to alkalinity levels of 120, 200, 300, and 400 mg CaCO₃/L, respectively, adjusted with sodium bicarbonate (NaHCO₃). Juveniles (n = 336; 1.5 ± 0.8 g) were stocked at 28 shrimp/m2 in 60 L tanks with filtered seawater. Tanks were continuously aerated, and water temperature was maintained at 27 ± 1 °C. Shrimp were fed a commercial diet (35% crude protein) four times daily. Histological samples were collected on Days 0, 14, and 30. Shrimp at 200 and 300 mg CaCO₃/L exhibited reversible morphological changes in both organs, whereas those at 400 mg CaCO₃/L showed pronounced tissue damage, with only partial hepatopancreas recovery after 30 days. These results indicate that P. vannamei exhibits a concentration-dependent capacity for tissue recovery under sustained high alkalinity, maintaining structural integrity up to approximately 300 mg CaCO₃/L.