Fluoxetine induces changes in community structure, biochemical composition, antioxidant response and primary productivity of phytoplankton

IF 2.2 3区 生物学 Q1 MARINE & FRESHWATER BIOLOGY
Suwebat Ayanronke Akinyemi, Mathias Ahii Chia, Oyindamola Favor Babalola, Esther Ajibola Bamigbola, Rafiu Adekunle Atitebi, Waetsi Nya Yusufu, Duke Ibidamola Effiom
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Abstract

Domestic and industrial effluents contain substantial amounts of micropollutants, such as pharmaceuticals, which may influence the balance of the phytoplankton community. A mesocosm approach was used to determine the effects of different fluoxetine concentrations (20 ng L−1, 20 µg L−1, and 20 mg L−1) on phytoplankton community structure, biochemical composition, antioxidant response, and primary productivity. The total cell density of the phytoplankton community was in the order of control > 20 µg > 20 ng > 20 mg by the 21st day of the experiment. On day 21, the phytoplankton community had chlorophyll a content in the order of 20 mg > 20 µg > 20 ng > control, but these changes were not significant (p > 0.05). Beta diversity results revealed that fluoxetine significantly affected the community structure and dynamics of exposed phytoplankton. Reactive oxygen species, malondialdehyde and peroxidase levels were significantly altered by changes in fluoxetine concentrations. Protein content increased at 20 µg L−1 and decreased at 20 ng L−1 and 20 mg L−1 by day 21 of the experiment. These results suggest that, even in the ng L−1 range, fluoxetine could contribute to the reshaping of phytoplankton community structure and dynamics in aquatic ecosystems.

Abstract Image

氟西汀诱导浮游植物的群落结构、生化组成、抗氧化反应和初级生产力发生变化
生活污水和工业废水中含有大量微污染物(如药物),可能会影响浮游植物群落的平衡。本研究采用中观宇宙方法确定了不同浓度的氟西汀(20 纳克/升、20 微克/升和 20 毫克/升)对浮游植物群落结构、生化组成、抗氧化反应和初级生产力的影响。到实验的第 21 天,浮游植物群落的总细胞密度依次为对照组> 20 µg > 20 ng > 20 mg。第 21 天,浮游植物群落的叶绿素 a 含量依次为 20 毫克;20 微克;20 毫微克;20 毫微克;对照组,但这些变化并不显著(p> 0.05)。Beta 多样性结果显示,氟西汀明显影响了暴露浮游植物的群落结构和动态。活性氧、丙二醛和过氧化物酶的水平因氟西汀浓度的变化而显著改变。蛋白质含量在 20 µg L-1 浓度下增加,在 20 ng L-1 和 20 mg L-1 浓度下减少,直至实验的第 21 天。这些结果表明,即使在毫微克/升的范围内,氟西汀也能促进水生生态系统中浮游植物群落结构和动态的重塑。
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来源期刊
Hydrobiologia
Hydrobiologia 生物-海洋与淡水生物学
CiteScore
5.40
自引率
11.50%
发文量
288
审稿时长
4.9 months
期刊介绍: Hydrobiologia publishes original research, reviews and opinions regarding the biology of all aquatic environments, including the impact of human activities. We welcome molecular-, organism-, community- and ecosystem-level studies in contributions dealing with limnology and oceanography, including systematics and aquatic ecology. Hypothesis-driven experimental research is preferred, but also theoretical papers or articles with large descriptive content will be considered, provided they are made relevant to a broad hydrobiological audience. Applied aspects will be considered if firmly embedded in an ecological context.
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