Effect of Different Bottom Substrates on Survival Rate and Growth ofJuvenileSea Cucumber (Holothuria scabra) Cultured in Tanks

Received: 01-01-2016

Accepted: 17-07-2016

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Issue: Vol. 14 No. 8 (2016)

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CHĂN NUÔI – THÚ Y – THỦY SẢN

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Anh, N. (2024). Effect of Different Bottom Substrates on Survival Rate and Growth ofJuvenileSea Cucumber (Holothuria scabra) Cultured in Tanks. Vietnam Journal of Agricultural Sciences, 14(8), 1190–1197. http://testtapchi.vnua.edu.vn/index.php/vjasvn/article/view/1432

Effect of Different Bottom Substrates on Survival Rate and Growth ofJuvenileSea Cucumber (Holothuria scabra) Cultured in Tanks

Nguyen Thi Ngoc Anh (*) 1

  • 1 Khoa Thủy sản, Trường Đại học Cần Thơ

    • Keywords

    Seacucumber, Holothuria scabra, bottom substrate, growth, survival rate

    Abstract


    A study was performed to evaluate the effect of different bottom substrates on survival rate and growth of juvenile sea cucumber (Holothuria scabra) cultured in tanks. Experiment consisted of 4 treatments namely sandy substrate, muddy substrate, sand+mud sustrate mix with 1:1ratio,and brick substrate. Each treatment was repeated three times.Juvenile sea cucumberswithmean initial weight and length of 3.51± 0.14 g and 4.35± 0.51 cm, respectively,were kept in the 250- L tank and provided with slightly continuous aeration at salinity of 30 ppt, and stocking density of30 individuals/m2. After 75 days of culture, survival rate of sea cucumber in sandy, muddy and sand+mud substrates was in the range of 94.4- 100%, and not significantlydifferent(p> 0.05). Particularly, the sea cucumber in the brick treatment experiencedgradual mortalitywith time and complete death at day 62 of culture. The highest specific growth rate and daily growth rate in termsof length and weight of H. scabrain the sandy treatment was observed, and significantly different (p< 0.05) from other substrates. The results suggest that sandy substrate was most suitable while the brick wasnot appropriate for juvenile of sea cucumber H. scabra. Moreover, H. scabracould live and develop on the sand+mud and muddy substrates in tank conditions.

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