文章基本信息

标题：The Unusual Reddish-Bloom Appearance in a Freshwater Fishpond at Kingolwira National Fish Farming Center, Morogoro, Tanzania
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作者：Offoro N. Kimambo ; Jabulani R. Gumbo ; Titus A.M Msagati 等
期刊名称：International Journal of Environment
印刷版ISSN：2091-2854
出版年度：2020
卷号：9
期号：2
页码：204-216
DOI：10.3126/ije.v9i2.32734
出版社：Progressive Sustainable Developers Nepal (PSD-Nepal)
摘要：The study aimed to examines a case of what constituted the uncommonly reddish-bloom appearance in the fishponds during the dry season (September 2018) at Kingolwira National Fish Farming Center located in Morogoro, Tanzania. The study used a benchtop FlowCAM® to investigate species' morphology. One-time assessment of physico-chemical characteristics during the event was performed from the reddish and non-reddish fishponds. Images were compared with the available literature, but also t-test statistics were performed to examine the difference between the fishponds. The results show that the fishponds were significantly (p<0.05) different from each other in terms of physico-chemical parameters except for water temperatures. Furthermore, Microcystis species dominated the non-reddish fishpond whereas Euglenophytes species were pervasive in the reddish fishpond. The two species have the potential to produce secondary metabolites (toxins) or to produce a hypoxia condition that is harmful to the fishery, aquatic ecology, and human. To confirm toxicity nature and dynamics further, future studies should consider extensive and regular diurnal and long-term monitoring.
关键词：Harmful algae;Microcystis;Reddish-bloom;Euglenophytes;FlowCAM