The pH-dependent toxicity of triclosan to five aquatic organisms (Daphnia magna, Photobacterium phosphoreum, Danio rerio, Limnodrilus hoffmeisteri, and Carassius auratus)

Abstract We investigated the lethal toxicity of Shibukuro and Tama river water near the inflow of Tamagawa hot-spring water in Akita Prefecture, Japan. We first measured heavy metal concentrations in both rivers. We detected iron, arsenic, and aluminum; the concentrations of each tended to decrease from upstream to downstream. We next examined the influence of river water on zebrafish Danio rerio and water flea Daphnia magna. We observed lethal effects in both species, with Daphnia magna more sensitive to toxicity than Danio rerio. For both species, the toxic effects of river water decreased with increasing distance downstream from the inflow of hot-spring water. Our results show that the heavy metals discharged from Tamagawa hot spring have a negative effect on aquatic organisms.

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Interactive toxic effects of agrochemicals on aquatic organisms

Water Science & Technology ◽

10.2166/wst.1999.0067 ◽

1999 ◽

Vol 40 (1) ◽

pp. 357-364 ◽

Cited By ~ 8

Author(s):

A. Kungolos ◽

P. Samaras ◽

A. M. Kipopoulou ◽

A. Zoumboulis ◽

G. P. Sakellaropoulos

Keyword(s):

Daphnia Magna ◽

Marine Bacterium ◽

Methyl Parathion ◽

Vibrio Fischeri ◽

Interactive Effect ◽

Algal Growth ◽

Aquatic Organisms ◽

Interactive Effects ◽

Selenastrum Capricornutum ◽

Toxic Compound

The effects of three common agrochemicals, lindane, methyl parathion and atrazine, on crustacean Daphnia magna, alga Selenastrum capricornutum and marine bacterium Vibrio fischeri were investigated in this study. Methyl parathion was the most toxic compound towards all three organisms, while lindane was more toxic to Daphnia magna and Vibrio fischeri than atrazine, and atrazine was more toxic to Selenastrum capricornutum than lindane. Among the three aquatic organisms, Selenastrum capricornutum was most sensitive in detecting lindane and atrazine toxicity, while Daphnia magna was most sensitive in detecting methyl parathion toxicity. The interactive effects of the pesticides were also investigated. The interactive effect between lindane and methyl parathion on survival of Daphnia magna was synergistic, while the ones between lindane and atrazine and between methyl parathion and atrazine were generally additive. The interactive effect of the three pesticides applied together on Daphnia magna was synergistic. The interactive effect of the three pesticides on the growth of Selenastrum capricornutum was antagonistic with few cases of addition, while the effect of all the three pairs of pesticides on algal growth was also antagonistic. The interactive effect of lindane and methyl parathion on Vibrio fischeri was additive.

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Lethal effects of abamectin on the aquatic organisms Daphnia similis, Chironomus xanthus and Danio rerio

Chemosphere ◽

10.1016/j.chemosphere.2011.08.047 ◽

2012 ◽

Vol 86 (1) ◽

pp. 36-40 ◽

Cited By ~ 64

Author(s):

Andréa Novelli ◽

Bruna Horvath Vieira ◽

Daniela Cordeiro ◽

Luciana Teresa Dias Cappelini ◽

Eny Maria Vieira ◽

...

Keyword(s):

Danio Rerio ◽

Aquatic Organisms ◽

Lethal Effects ◽

Daphnia Similis

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Silver nanoparticles and silver nitrate induce high toxicity to Pseudokirchneriella subcapitata, Daphnia magna and Danio rerio

The Science of The Total Environment ◽

10.1016/j.scitotenv.2013.06.101 ◽

2014 ◽

Vol 466-467 ◽

pp. 232-241 ◽

Cited By ~ 133

Author(s):

Fabianne Ribeiro ◽

Julián Alberto Gallego-Urrea ◽

Kerstin Jurkschat ◽

Alison Crossley ◽

Martin Hassellöv ◽

...

Keyword(s):

Silver Nanoparticles ◽

Silver Nitrate ◽

Daphnia Magna ◽

Danio Rerio ◽

Pseudokirchneriella Subcapitata ◽

High Toxicity

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Índices de calidad ambiental de aguas del Arroyo Caañabe mediante tests microbiológicos y ecotoxicológico

Ambiente e Agua - An Interdisciplinary Journal of Applied Science ◽

10.4136/ambi-agua.1703 ◽

2016 ◽

Vol 11 (3) ◽

pp. 548

Author(s):

Tomás Rodrigo López Arias ◽

Virginia Florencia Fernández Peralta ◽

Deidamia Mercedes Franco de Diana ◽

Edgar Fidel Galeano Delgado ◽

Fernando Salvador Alonso Márquez ◽

...

Keyword(s):

Daphnia Magna ◽

Allium Cepa ◽

Danio Rerio ◽

Lactuca Sativa ◽

E Coli ◽

Los Grupos

El Arroyo Caañabe, es un curso de agua que corre a través de los Departamentos Central y Paraguarí (República del Paraguay). Las descargas de origen agropecuario, urbano e industrial contaminan sus aguas. En este trabajo se evalúa la calidad del arroyo mediante sus características fisicoquímicas, ecotoxicológicas, microbiológicas y se la comparan con la legislación vigente. Se colectaron muestras en los meses de Julio y Setiembre del año 2014. Se estudiaron tres sitios denominados S1, ubicado en aguas arriba de la Ciudad de Carapegua; S2 en la intersección del arroyo con la Ruta 1, y S3, en la zona límite de las ciudades de Carapegua y Nueva Italia. Se realizaron ensayos de toxicidad aguda con Daphnia magna, Lactuca sativa, y alevines de Danio rerio; además de ensayos crónicos en Tetradesmus wisconsinenesis, D. rerio y Allium cepa. Se evaluaron los grupos y especies microbianos siguientes: aerobios mesófilos, enterobacterias, coliformes totales, coliformes fecales, E. coli, Pseudomona aeruginosa, mohos y levaduras; además se determinaron índices de calidad y de contaminación. Los resultados indican que las aguas del arroyo presentaron características de clase II y de clase III según el padrón establecido por la Secretaría del Ambiente del Paraguay. El índice de calidad de agua (ICA) arrojó valores comprendidos entre 52 y 62 lo que otorga la clasificación de “regular”; mientras que el índice de contaminación trófica (ICOTRO) presentó valores entre 0,12 y 0.26, indicando “eutrofización”. Los recuentos de coliformes fueron superiores en el segundo muestreo, aunque dentro lo establecido por la norma. La presencia de P. aeruginosa en los tres puntos constituye un riesgo para la salud. Ensayos ecotoxicológicos agudos mostraron que las aguas presentan escasos efectos letales, no obstante los ensayos crónicos en A. cepa y el test de micronúcleos en D. rerio indican potenciales efectos citotóxicos y genotóxicos de las aguas del Arroyo Caañabe.

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Development of Daphnia magna under exposure to the xenobiotic octylphenol

Journal of Vietnamese Environment ◽

10.13141/jve.vol6.no2.pp155-158 ◽

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.

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