科研之友
微信
新浪微博
Facebook
分享链接
摘要
The contribution of biofilm to water quality and as a food source for the culture of the freshwater shrimp Neocaridina heteropoda heteropoda was assessed in indoor aquaria using a zero water exchange system. Two successive phases were conducted to evaluate biofilm development on different substrates (polyethylene net: PN, plastic bottles: PET, agrovelo: AV) and the effect of biofilm to shrimps culture. The biofilm grown on all substrates to keep a good water quality by the uptake of nitrogen compounds and the production of high levels of dissolved oxygen associated to the proliferation of autotrophic microorganisms. High survival, reproduction and hatching of shrimps were achieved in all groups mainly associated with good water quality. Final biomass of the shrimps was significant higher for PN and AV groups: while specific growth rate and lipids of the shrimps yielded similar values free all treatments indicating that the three substrates allowed the growth of a biofilm that resulted in a healthy for of food source with similar shrimps. The results show that the production. heteropoda heteropoda could he successfully conducted by a biofilm-based culture system with no water exchange, and thus contributing to a better water use. All materials tested were suitable substrates for biofilm growth, though AV and PET could reduce significatnly production costs when compared to the PN, VI Baser, by the recyling and reuse of waste materials (such as plastic bottles) could contribute to the development of a responsible, sustainable and environmentally friendly culture method.
- 出版日期2016-8
