Effects of Stigeoclonium nanum , a freshwater periphytic microalga on water quality in a small-scale recirculating aquaculture system

Recirculating aquaculture systems (RAS) are becoming important for aquaculture due to land and water supply limitations and due to their low environmental impact. Bacteria are important in RAS as their role in nutrient recycling has been the main mechanism for waste removal in these systems. Besides...

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Main Authors: Mohamed Ramli, Norulhuda, Yusoff, Fatimah Md, Giatsis, Christos, Tan, Geok Yuan Annie, Verreth, Johan A.J., Verdegem, Marc Charles Jean
Format: Article
Published: Wiley 2018
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Online Access:http://eprints.um.edu.my/21251/
https://doi.org/10.1111/are.13818
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spelling my.um.eprints.212512019-05-16T07:24:46Z http://eprints.um.edu.my/21251/ Effects of Stigeoclonium nanum , a freshwater periphytic microalga on water quality in a small-scale recirculating aquaculture system Mohamed Ramli, Norulhuda Yusoff, Fatimah Md Giatsis, Christos Tan, Geok Yuan Annie Verreth, Johan A.J. Verdegem, Marc Charles Jean Q Science (General) QH Natural history Recirculating aquaculture systems (RAS) are becoming important for aquaculture due to land and water supply limitations and due to their low environmental impact. Bacteria are important in RAS as their role in nutrient recycling has been the main mechanism for waste removal in these systems. Besides bacteria, the presence of microalgae can benefit the water quality through the absorption of inorganic nitrogen (ammonium and nitrate) and phosphorus from the water. However, reports on the inclusion of microalgae in RAS are very scarce. The objective of this study was to determine the effect of microalgae on water quality (total ammonia nitrogen, nitrite, nitrate and phosphate) and bacterial composition in a freshwater small-scale RAS. A periphytic microalga, Stigeoclonium nanum, was used in this study. A rapid fingerprint analysis, denaturing gradient gel electrophoresis (DGGE), was used to determine the bacterial community composition in the water. The results showed that ammonia concentrations were not significantly different (p > 0.05) between RAS with microalgae (RAS+A) and RAS without microalgae (RAS-A). However, nitrite, nitrate and phosphate were significantly lower in the RAS+A than the RAS-A (p < 0.05). Pielou's evenness and Shannon diversity index of bacterial community between the treatments were not different (p > 0.05); however, the bacterial composition between the treatments was significantly different (p < 0.05). Wiley 2018 Article PeerReviewed Mohamed Ramli, Norulhuda and Yusoff, Fatimah Md and Giatsis, Christos and Tan, Geok Yuan Annie and Verreth, Johan A.J. and Verdegem, Marc Charles Jean (2018) Effects of Stigeoclonium nanum , a freshwater periphytic microalga on water quality in a small-scale recirculating aquaculture system. Aquaculture Research, 49 (11). pp. 3529-3540. ISSN 1355-557X https://doi.org/10.1111/are.13818 doi:10.1111/are.13818
institution Universiti Malaya
building UM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaya
content_source UM Research Repository
url_provider http://eprints.um.edu.my/
topic Q Science (General)
QH Natural history
spellingShingle Q Science (General)
QH Natural history
Mohamed Ramli, Norulhuda
Yusoff, Fatimah Md
Giatsis, Christos
Tan, Geok Yuan Annie
Verreth, Johan A.J.
Verdegem, Marc Charles Jean
Effects of Stigeoclonium nanum , a freshwater periphytic microalga on water quality in a small-scale recirculating aquaculture system
description Recirculating aquaculture systems (RAS) are becoming important for aquaculture due to land and water supply limitations and due to their low environmental impact. Bacteria are important in RAS as their role in nutrient recycling has been the main mechanism for waste removal in these systems. Besides bacteria, the presence of microalgae can benefit the water quality through the absorption of inorganic nitrogen (ammonium and nitrate) and phosphorus from the water. However, reports on the inclusion of microalgae in RAS are very scarce. The objective of this study was to determine the effect of microalgae on water quality (total ammonia nitrogen, nitrite, nitrate and phosphate) and bacterial composition in a freshwater small-scale RAS. A periphytic microalga, Stigeoclonium nanum, was used in this study. A rapid fingerprint analysis, denaturing gradient gel electrophoresis (DGGE), was used to determine the bacterial community composition in the water. The results showed that ammonia concentrations were not significantly different (p > 0.05) between RAS with microalgae (RAS+A) and RAS without microalgae (RAS-A). However, nitrite, nitrate and phosphate were significantly lower in the RAS+A than the RAS-A (p < 0.05). Pielou's evenness and Shannon diversity index of bacterial community between the treatments were not different (p > 0.05); however, the bacterial composition between the treatments was significantly different (p < 0.05).
format Article
author Mohamed Ramli, Norulhuda
Yusoff, Fatimah Md
Giatsis, Christos
Tan, Geok Yuan Annie
Verreth, Johan A.J.
Verdegem, Marc Charles Jean
author_facet Mohamed Ramli, Norulhuda
Yusoff, Fatimah Md
Giatsis, Christos
Tan, Geok Yuan Annie
Verreth, Johan A.J.
Verdegem, Marc Charles Jean
author_sort Mohamed Ramli, Norulhuda
title Effects of Stigeoclonium nanum , a freshwater periphytic microalga on water quality in a small-scale recirculating aquaculture system
title_short Effects of Stigeoclonium nanum , a freshwater periphytic microalga on water quality in a small-scale recirculating aquaculture system
title_full Effects of Stigeoclonium nanum , a freshwater periphytic microalga on water quality in a small-scale recirculating aquaculture system
title_fullStr Effects of Stigeoclonium nanum , a freshwater periphytic microalga on water quality in a small-scale recirculating aquaculture system
title_full_unstemmed Effects of Stigeoclonium nanum , a freshwater periphytic microalga on water quality in a small-scale recirculating aquaculture system
title_sort effects of stigeoclonium nanum , a freshwater periphytic microalga on water quality in a small-scale recirculating aquaculture system
publisher Wiley
publishDate 2018
url http://eprints.um.edu.my/21251/
https://doi.org/10.1111/are.13818
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score 13.209306