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Effects of Different Densities of Sea Grape Caulerpa lentillifera on Water Quality, Growth and Survival of the Whiteleg Shrimp Litopenaeus vannamei in Polyculture System

Department of Coastal Aquaculture, College of Aquaculture and Fisheries, Can Tho University, 3/2 Street, Ninh Kieu District, Can Tho City 94000, Vietnam
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Author to whom correspondence should be addressed.
Academic Editor: Maria Angeles Esteban
Received: 17 March 2021 / Revised: 23 April 2021 / Accepted: 28 April 2021 / Published: 5 May 2021
The integrated aquaculture-seaweed system has been identified as a bio-mitigation strategy to overcome environmental damage, improve the efficiency of nutrient use, maintain good water quality, and ensure the system’s sustainability. This study was conducted to determine the appropriate density of sea grape (Caulerpa lentillifera) in polyculture with whiteleg shrimp (Litopenaeus vannamei) in the same culture tank. Five treatments were randomly designed in triplicate tanks where shrimp was monocultured (without sea grape) as a control treatment and four polyculture treatments with different seaweed density levels (0.5, 1, 1.5, and 2 kg m−3) for 56 days. The results showed that polyculture of shrimp and sea grape significantly reduced the concentrations of total ammonia nitrogen (TAN), nitrite (NO2), nitrate (NO3), and phosphate (PO43−) in the rearing tanks and significantly improved (p < 0.05) the growth rate (6.67–6.76% day−1), survival (73.3–78.5%), and production of shrimp (3.44–3.87 kg m−3) compared to monoculture (6.24% day−1, 54.8%, and 2.02 kg m−3, respectively). Applying shrimp and sea grape polyculture at a density of 1 kg m−3 provided a relatively better shrimp performance and feed conversion ratio than other seaweed densities, although not significantly different among polyculture treatments. The findings suggested that sea grape could be used at densities of 0.5–2 kg m−3 in polyculture with whiteleg shrimp, of which 1 kg m−3 resulted in higher production and feed efficiency. View Full-Text
Keywords: polyculture; Litopenaeus vannamei; Caulerpa lentillifera; water quality; shrimp performance polyculture; Litopenaeus vannamei; Caulerpa lentillifera; water quality; shrimp performance
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MDPI and ACS Style

Ly, K.V.; Murungu, D.K.; Nguyen, D.P.; Nguyen, N.A.T. Effects of Different Densities of Sea Grape Caulerpa lentillifera on Water Quality, Growth and Survival of the Whiteleg Shrimp Litopenaeus vannamei in Polyculture System. Fishes 2021, 6, 19. https://0-doi-org.brum.beds.ac.uk/10.3390/fishes6020019

AMA Style

Ly KV, Murungu DK, Nguyen DP, Nguyen NAT. Effects of Different Densities of Sea Grape Caulerpa lentillifera on Water Quality, Growth and Survival of the Whiteleg Shrimp Litopenaeus vannamei in Polyculture System. Fishes. 2021; 6(2):19. https://0-doi-org.brum.beds.ac.uk/10.3390/fishes6020019

Chicago/Turabian Style

Ly, Khanh V., David K. Murungu, Dung P. Nguyen, and Ngoc A.T. Nguyen 2021. "Effects of Different Densities of Sea Grape Caulerpa lentillifera on Water Quality, Growth and Survival of the Whiteleg Shrimp Litopenaeus vannamei in Polyculture System" Fishes 6, no. 2: 19. https://0-doi-org.brum.beds.ac.uk/10.3390/fishes6020019

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