Nutrients uptake and growth of Ulva lactuca (Linnaeus, 1753) in grey mullet (Mugil cephalus) wastewater versus natural estuarine water

This study investigates the capability of Ulva lactuca to grow in an integrated system, aiming to optimise the needing of resources and to decrease the ecological impact of wastewater. The nutrients uptake and the growth of U. lactuca in Mugil cephalus wastewater (WW) were evaluated and compared wit...

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Bibliographic Details
Published in:Chemistry and ecology 2018-07, Vol.34 (6), p.495-505
Main Authors: Brundu, Gianni, Chindris, Anuta
Format: Article
Language:English
Subjects:
aquaculture
Aquatic life
Assimilation
Biomass
Brackishwater environment
Cylindrical tanks
dissolved nutrients
Estuaries
Estuarine environments
Growth rate
integrate system
Macroalgae
Marine fishes
Mineral nutrients
Mugil cephalus
Mullet
Nutrients
Tanks
Thalli
treatment
Ulva lactuca
Uptake
Wastewater
Yields
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Summary:This study investigates the capability of Ulva lactuca to grow in an integrated system, aiming to optimise the needing of resources and to decrease the ecological impact of wastewater. The nutrients uptake and the growth of U. lactuca in Mugil cephalus wastewater (WW) were evaluated and compared with U. lactuca cultivated in estuarine water (EW). Fresh thalli of U. lactuca were cultivated for 10 days in 5 L cylindrical tanks, 3 replicates per treatment. The uptake of dissolved inorganic nitrogen (DIN) and dissolved inorganic phosphorous (DIP), as well as the biomass yield and specific growth rate of U. lactuca, were assessed every two days. At the end of the experiment, U. lactuca resulted in a higher assimilation of DIN in EW (95.7 ± 0.3%, mean ± SE) than in wastewater (68.7 ± 1.0%) (p 80%), as well as in the biomass yield and specific growth rate. This study demonstrates the efficiency of U. lactuca in the assimilation of DIN and DIP from M. cephalus WW, contributing to reduce the release of dissolved inorganic nutrients in the natural environment.
ISSN:0275-7540
1029-0370
DOI:10.1080/02757540.2018.1452918