Abstract
The current study was aimed at investigating the use of different fertilizers - dicalcium phosphate, biosolid and quail feces - as a strategy for water fertilization in Daphnia sp production. It was used twenty-four 100-L tanks of asbestos cement distributed in a completely randomized split-plot design with six replicates, with plots in the three kinds of fertilizers (biosolid, dicalcium phosphate, and quail feces) and a control without fertilization (WF) and subplots at the times of assessment (days 8 and 13). It was assessed the biomass production of Daphnia sp. and the following water quality parameters: chlorophyll a, electrical conductivity, pH, dissolved oxygen, temperature, ammonia and organic nitrogen, total phosphorus and total hardness. There was a significant correlation between the values of chlorophyll a and biomass weight of Daphnia sp, which indicates interactions between phytoplankton and zooplankton communities. The maximum weight of Daphnia sp. biomass is found in tanks fertilized with quail feces (35.98 g), followed by the biosolid (16.80 g), control without fertilization (6.75 g) and dicalcium phosphate (5.24 g).
Highlights
The addition of fertilizers in nursery ponds is a common practice in aquaculture
The values of chlorophyll a was significantly (P
The higher values of chlorophyll a in tanks fertilized with quail feces could have a correlation to the nutrients levels, higher, in this fertilizer (Table 1), like the nitrogen and the carbon from carbon monoxide, which serve as essential nutrients for the algae growth
Summary
The addition of fertilizers in nursery ponds is a common practice in aquaculture. The nutrients from fertilizers are incorporated into plankton biomass (phyto and zooplankton) and, through a complex web of assimilation and recycling, they reach the cultivated aquatic organisms (Mischke & Zimba, 2004).Regular additions of nitrogen should occur in nurseries, as fertilizers or rations, to keep its concentration high enough for abundant growth of phytoplankton and, to obtain higher productivity (Boyd, 1997).The raise of natural food may be stimulated by the use of inorganic or organic fertilizers, which increases the availability of nutrients in the aquatic environment. The current study was aimed at investigating the use of different fertilizers (dicalcium phosphate, biosolid and quail feces) as a strategy for water fertilization in Daphnia sp production. At the end of the experiment, the water in each tank was filtered to get the biomass production of zooplankton (Daphnia sp.) in control without fertilization, biosolid, dicalcium phosphate, and quail feces tanks.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
