Optimizing Duckweed (<i>Lemna minor</i>) Surface Coverage as a Biofilter in a Recirculating Aquaculture System for Sumatran Barb (<i>Puntius tetrazona</i>)
AQUACULTURE RESEARCH, cilt.2026, sa.1, 2026 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 2026 Sayı: 1
- Basım Tarihi: 2026
- Doi Numarası: 10.1155/are/3028394
- Dergi Adı: AQUACULTURE RESEARCH
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Artic & Antarctic Regions, BIOSIS, CAB Abstracts, Environment Index, Geobase, Directory of Open Access Journals, Zoological Record, Academic Search Ultimate (EBSCO), Natural Science Collection (ProQuest), Biomedical Reference Collection: Corporate Edition (EBSCO), Earth, Atmospheric, & Aquatic Science Collection (ProQuest)
- İstanbul Üniversitesi Adresli: Evet
Özet
This study evaluates the effectiveness of Lemna minor as a biofilter in a recirculating aquaculture system (RAS) for the cultivation of Sumatran barb (Puntius tetrazona). The experiment was conducted over 40 days using four treatments based on the surface area coverage of L. minor: 0% (control/T0), 20% (T1), 40% (T2), and 60% (T3), with five replications. The results demonstrated that integrating L. minor significantly influenced water quality and physiological responses. The phosphate concentration was significantly lower in T2 (1.44 +/- 0.59 mg/L) than in T0 (p < 0.05). The highest specific growth rate (SGR) was found at T2 (0.60% +/- 0.09%/day) and was numerically higher than T0, though the difference was not statistically significant (p > 0.05). The survival rate (SR) was highest in T1 (96.86% +/- 3.72%) and T0, but was significantly lower in T3 (92.82% +/- 4.55%), suggesting a negative impact of excessive plant coverage (p < 0.05). Physiologically, fish in T2 exhibited the lowest stress levels, indicated by significantly lower blood glucose levels (57.28 mg/dL) and oxygen consumption rates (0.40 mg O2/g/h) compared to other groups. Based on water quality maintenance, growth efficiency, and physiological stress indicators, a 40% surface coverage of L. minor is recommended as the optimal biofilter density for Sumatran barb culture in RAS.