Assessment of chronic effects of tebuconazole on survival, reproduction and growth of Daphnia magna after different exposure times

2016 ◽  
Vol 124 ◽  
pp. 10-17 ◽  
Author(s):  
E. Sancho ◽  
M.J. Villarroel ◽  
M.D. Ferrando
Keyword(s):  
Daphnia Magna ◽  
Chronic Effects

scholarly journals Development of Daphnia magna under exposure to the xenobiotic octylphenol

2014 ◽  
Vol 6 (2) ◽  
pp. 155-158
Author(s):  
Thanh Son Dao ◽  
Thi My Chi Vo ◽  
Hong Lan Chi Do ◽  
Phuoc Dan Nguyen
Keyword(s):  
Developing Country ◽  
Daphnia Magna ◽  
Aquatic Organisms ◽  
Environmental Concerns ◽  
Human Beings ◽  
Ecological Health ◽  
Potential Toxicity ◽  
Chronic Effects ◽  
High Concentrations ◽  
Significant Mortality

Xenobiotics are of human and environmental concerns due to their potential toxicity. Octylphenol is one of the very common and daily used xenobiotics in door and out door activities of human beings. Toxicity of octylphenol to aquatic organisms, especially to zooplankton (e.g. Daphnia magna) was investigated but not fully understood. In this study we evaluated the chronic effects of octylphenol at the concentrations of 5, 50 and 500 µg L-1 on Daphnia magna over a period of 14 days. The results showed that low concentration of octylphenol (5 µg L-1) stimulated the maturation while high concentrations of the chemical (50 and 500 µg L-1) caused a significant mortality to the Daphnia. Besides, all the tested concentrations of octylphenol had serious impacts on fecundity and growth of the animals. Investigations on the presence, distribution, fate and toxicity of xonobiotics including octylphenol in the developing country environment are suggested for human, environmental and ecological health protection. Những hợp chất tổng hợp đang là mối quan ngại cho con người và môi trường vì khả năng gây độc của chúng. Octylphenol là một trong những hợp chất tổng hợp được sử dụng phổ biến và thường xuyên trong những hoạt động của con người trong nhà và ngoài trời. Độc tính của octylphenol đối với thủy sinh vật, đặc biệt đối với động vật phù du (vd. Daphnia magna) mặc dù đã được nghiên cứu nhưng vẫn chưa được hiểu biết đầy đủ. Trong nghiên cứu này, chúng tôi đánh giá ảnh hưởng mãn tính của octylphenol ở các nồng độ 5, 50 và 500 µg/lít lên Daphnia magna trong thời gian 14 ngày. Kết quả cho thấy ở nồng độ octylphenol thấp (5 µg/lít) kích thích sự thành thục của sinh vật trong khi ở nồng độ cao hơn (50 và 500 µg/lít) gây chết đáng kể Daphnia. Bên cạnh đó, tất cả các nồng độ ocytlphenol dùng trong thí nghiệm gây ảnh hưởng nghiêm trọng lên sức sinh sản và sinh trưởng của sinh vật. Nghiên cứu về sự hiện diện, phân bố, phát tán và độc tính của những chất tổng hợp bao gồm octylphenol ở các nước đang phát triển nên được tiến hành vì mục tiêu bảo vệ sức khỏe con người, môi trường và hệ sinh thái.

Primary and Secondary Plastic Particles Exhibit Limited Acute Toxicity but Chronic Effects on Daphnia magna

2020 ◽  
Vol 54 (11) ◽  
pp. 6859-6868 ◽  
Author(s):  
Elvis Genbo Xu ◽  
Rachel S. Cheong ◽  
Lan Liu ◽  
Laura M. Hernandez ◽  
Agil Azimzada ◽  
...  
Keyword(s):  
Acute Toxicity ◽  
Daphnia Magna ◽  
Chronic Effects ◽  
Secondary Plastic

Chronic effects of temperature and nitrate pollution on Daphnia magna: Is this cladoceran suitable for widespread use as a tertiary treatment?

2015 ◽  
Vol 83 ◽  
pp. 141-152 ◽  
Author(s):  
Alberto Maceda-Veiga ◽  
Gordon Webster ◽  
Oriol Canals ◽  
Humbert Salvadó ◽  
Andrew J. Weightman ◽  
...  
Keyword(s):  
Daphnia Magna ◽  
Nitrate Pollution ◽  
Tertiary Treatment ◽  
Chronic Effects ◽  
Effects Of Temperature

scholarly journals Using Daphnia magna Straus to monitor toxicity of sustainable oil sludge bio-phytoremediation

2021 ◽  
Vol 249 ◽  
pp. 03001
Author(s):  
Nia Rossiana ◽  
Keukeu Kaniawati Rosada ◽  
Monica Natasha Almapangesti ◽  
Yayat Dhahiyat
Keyword(s):  
Daphnia Magna ◽  
Toxicity Test ◽  
Oil Refinery ◽  
Oil Sludge ◽  
Range Finding ◽  
Lc50 Value ◽  
Chronic Effects ◽  
Randomized Design ◽  
Toxic Product ◽  
Completely Randomized Design

Oil sludge (OS) is the toxic product of various oil refinery processes. Oil sludge biophytoremediation is sustainable remediation efforts were conducted to reduce OS toxicity level and they also need to be monitored through toxicity test. In this study, the toxicants were OS postbiophytoremediation for 24 months (OS24) and 40 months (OS40), and were tested to Daphnia magna. The toxicity test consisted of Range Finding Test, acute and chronic toxicity test. The purpose of this research is to obtain the LC50 value of each OS and the chronic effects shown by D. magna. The method in this study was experimental with Completely Randomized Design (CRD). The LC50-96 hours values were calculated from 50% of dead individuals while D. magna reproduction was calculated from the number of neonates (offspring) produced within three weeks. The LC50 of OS24 and OS40 were 0.042 ppm and 0.366 ppm respectively. Both were categorized as ‘extremely toxic’ refer to Swan, 1994, observed chronic effects were reproduction delays and a decrease in the number of neonates.

Chronic effects of six micro/nano-Cu2O crystals with different structures and shapes on Daphnia magna

2015 ◽  
Vol 203 ◽  
pp. 60-68 ◽  
Author(s):  
Huihui Wang ◽  
Wenhong Fan ◽  
Feng Xue ◽  
Xiaolong Wang ◽  
Xiaomin Li ◽  
...  
Keyword(s):  
Daphnia Magna ◽  
Chronic Effects

Chronic effects of cyanobacterial toxins on Daphnia magna and their offspring

Toxicon ◽  
2010 ◽  
Vol 55 (7) ◽  
pp. 1244-1254 ◽  
Author(s):  
Thanh Son Dao ◽  
Lan-Chi Do-Hong ◽  
Claudia Wiegand
Keyword(s):  
Daphnia Magna ◽  
Cyanobacterial Toxins ◽  
Chronic Effects

scholarly journals A Comparison of Sensitivity on Chronic Effects of Daphnia magna and Ceriodaphnia dubia to Several Kinds of Organic Chemicals

2015 ◽  
Vol 25 (1) ◽  
pp. 55-60
Author(s):  
Tatsuhiro NIINO ◽  
Ryouko ABE ◽  
Naoko YAMAGUCHI ◽  
Yoshiyuki NIIKURA ◽  
Naoko YOSHIMURA ◽  
...  
Keyword(s):  
Daphnia Magna ◽  
Ceriodaphnia Dubia ◽  
Organic Chemicals ◽  
Chronic Effects
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