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<p>Cannibalism poses a major challenge in the commercial aquaculture of <i>Scylla paramamosain</i>, particularly during the crablet phase, primarily due to inadequate feed availability. Artificial feeds are generally less attractive, making live feeds preferable. This study aims to evaluate the preying capacity of crablets and the feeding ability of different sizes of mud crabs against amphipods. The experiment began with assessing the mass culture of <i>Grandidierella megnae</i>, followed by proximate analysis to evaluate its nutritional composition. Two additional experiments examined amphipods’ viability as live prey. The first assessed consumption rates of 4-day-old crabs, while the second evaluated prey consumption across different developmental stages. Results indicate that the indoor mass culture of amphipods supports population growth from 1.2 to 78.67 ± 19.86&#xa0;g over a 60-day rearing period, providing adult-stage amphipods as live feed. Additionally, amphipods exhibit satisfactory nutritional content conducive to mud crab growth. Crablets’ consumption rates increased significantly (<i>P</i> &lt; 0.05) with amphipod density, peaking at 30.3 individuals per crab. However, larger mud crabs exhibited reduced predation ability. Juveniles (~ 24&#xa0;g body weight) consumed 50% of the available amphipods during exposure. Findings suggest amphipods are most effective as live feed during crablet and early juvenile stages. This study presents an initial success of amphipods feeding on mud crab juveniles. Furthermore, the first described mass culture technique for <i>G. megnae</i> may serve as a foundation for commercial amphipod cultivation, facilitating their use as natural live feed and supplementary ingredients for various fish and crustaceans.</p>

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Exploring a novel live feed for mud crab (genus: Scylla): amphipod-crustacean (Grandidierella megnae) as a viable option

  • 期刊论文

  • 发表日期：

    2025年12月2日

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  • Sulaeman Sulaeman,
  • Herlinah Herlinah,
  • Gunarto Gunarto,
  • Rosmiati Rosmiati,
  • Andi Parenrengi,
  • Emma Suryati,
  • Muhammad Yusri Karim,
  • Samuel Lante,
  • Nurfadila Nurfadila

摘要

Cannibalism poses a major challenge in the commercial aquaculture of Scylla paramamosain, particularly during the crablet phase, primarily due to inadequate feed availability. Artificial feeds are generally less attractive, making live feeds preferable. This study aims to evaluate the preying capacity of crablets and the feeding ability of different sizes of mud crabs against amphipods. The experiment began with assessing the mass culture of Grandidierella megnae, followed by proximate analysis to evaluate its nutritional composition. Two additional experiments examined amphipods’ viability as live prey. The first assessed consumption rates of 4-day-old crabs, while the second evaluated prey consumption across different developmental stages. Results indicate that the indoor mass culture of amphipods supports population growth from 1.2 to 78.67 ± 19.86 g over a 60-day rearing period, providing adult-stage amphipods as live feed. Additionally, amphipods exhibit satisfactory nutritional content conducive to mud crab growth. Crablets’ consumption rates increased significantly (P < 0.05) with amphipod density, peaking at 30.3 individuals per crab. However, larger mud crabs exhibited reduced predation ability. Juveniles (~ 24 g body weight) consumed 50% of the available amphipods during exposure. Findings suggest amphipods are most effective as live feed during crablet and early juvenile stages. This study presents an initial success of amphipods feeding on mud crab juveniles. Furthermore, the first described mass culture technique for G. megnae may serve as a foundation for commercial amphipod cultivation, facilitating their use as natural live feed and supplementary ingredients for various fish and crustaceans.