A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
The effect of peracetic acid on microbial community, water quality, nitrification and rainbow trout (Oncorhynchus mykiss) performance in recirculating aquaculture systems (2020)
Suurnäkki, S., Pulkkinen, J. T., Lindholm-Lehto, P. C., Tiirola, M., & Aalto, S. L. (2020). The effect of peracetic acid on microbial community, water quality, nitrification and rainbow trout (Oncorhynchus mykiss) performance in recirculating aquaculture systems. Aquaculture, 516, Article 734534. https://doi.org/10.1016/j.aquaculture.2019.734534
JYU-tekijät tai -toimittajat
Julkaisun tiedot
Julkaisun kaikki tekijät tai toimittajat: Suurnäkki, Suvi; Pulkkinen, Jani T.; Lindholm-Lehto, Petra C.; Tiirola, Marja; Aalto, Sanni L.
Lehti tai sarja: Aquaculture
ISSN: 0044-8486
eISSN: 1873-5622
Julkaisuvuosi: 2020
Volyymi: 516
Artikkelinumero: 734534
Kustantaja: Elsevier
Julkaisumaa: Alankomaat
Julkaisun kieli: englanti
DOI: https://doi.org/10.1016/j.aquaculture.2019.734534
Julkaisun avoin saatavuus: Ei avoin
Julkaisukanavan avoin saatavuus:
Julkaisu on rinnakkaistallennettu (JYX): https://jyx.jyu.fi/handle/123456789/66073
Tiivistelmä
Microbial biofilters control water quality and enable the overall function of recirculation aquaculture systems (RAS). Changes in environmental conditions can affect the abundance and interactions of the diverse microbial populations of the biofilter, affecting nitrification of harmful ammonium and thus fish health. Here, we examined the effect of different application frequencies (0, 1, 2 and 4 times per week) of a common disinfectant, peracetic acid (PAA, applied 1.1 mg l−1 twice per day), on biofilter microbial communities, focusing especially on nitrifying microbial groups and using a high throughput sequencing of 16S rRNA gene and quantitative PCR (qPCR). In addition, we measured biofilter nitrification rates, water quality parameters, and fish performance. Although PAA additions did not significantly change the overall microbial community composition or abundance, the abundance of ammonia-oxidizing bacteria (AOB) and nitrate-oxidizing bacteria (NOB) first decreased at the beginning of the experiment but increased in numbers towards the end of the experiment with frequent PAA applications. PAA application decreased the nitrification rate, but increased the water quality in terms of reduced ammonium levels. PAA application did not significantly affect fish growth, but higher mortality was observed with the highest PAA application level of 4 times per week. These results suggest that when applied before the fish tank, PAA can be used for temporary water quality improvement without disturbing microbial communities. However, the application frequency required for persistent water quality improvement caused increased mortality.
YSO-asiasanat: denitrifikaatio; nitrifikaatio; mikrobit; vedenlaatu; vesiviljely (kalatalous); kirjolohi; suodattimet
Vapaat asiasanat: peretikkahappo
Liittyvät organisaatiot
OKM-raportointi: Kyllä
Raportointivuosi: 2020
JUFO-taso: 2