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Effect of background tank color in combination with sand substrate and shelters on survival and growth of Scylla tranquebarica instar

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Date
2022-05
Author
Thien, Fui Yin
Hamasaki, Katsuyuki
Shapawi, Rossita
Kawamura, Gunzo
Huervana, Joana Joy
Yong, Annita Seok Kian
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Abstract
Effect of tank color in combination with substrate-shelters on the survival and growth of the instar of purple mud crab, Scylla tranquebarica (initial body weight of 28.7 ± 2 mg) was investigated. Ten treatments were tested in triplicate with black (B) and white (W) tanks were set as the control, while other tanks were provided with a combination of sand substrate (S), and/or polyvinyl chloride pipes (P) as horizontal and nets (N) as vertical shelter, referred as B, BS, BSP, BSN, BSPN, W, WS, WSP, WSN and WSPN, respectively. Survival of the instar in black tanks (26.7 to 60.0%) was higher than in white tanks (20.0 to 46.7%) (P = 0.052). Survival in the horizontal shelter treatments (46.7 and 63.3%) exceeded that in the vertical shelter groups (30.0 and 50.0%) (P = 0.068). The final body weight of the instar in black tank (2.4 to 3.8 g) was significantly lower than white tank (2.6 to 4.8 g) (P = 0.02). Specific growth rate was significantly greater in sand substrate treatments (8.4 to 9.1%/day) than in controls (7.9 and 8.0%/day) (P = 0.015). In conclusion, horizontal shelter was better than vertical type, and black tank with substrate and horizontal shelter was more suitable for culture of purple mud crab instar.
Keywords
mud crab instar tank color substrate shelter survival and growth
URI
http://hdl.handle.net/10862/6321
Suggested Citation
Thien, F. Y., Hamasaki, K., Shapawi, R., Kawamura, G., Huervana, J. J., & Yong, A. S. K. (2022). Effect of background tank color in combination with sand substrate and shelters on survival and growth of Scylla tranquebarica instar. The Egyptian Journal of Aquatic Research, 48(3), 241-246. https://doi.org/10.1016/j.ejar.2022.04.004 
DOI
10.1016/j.ejar.2022.04.004
Subject
crab culture ASFA; instars ASFA; survival ASFA; growth ASFA; shelters; Scylla tranquebarica AGROVOC
Taxonomic term
Scylla tranquebarica GBIF
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