Long-Term Toxicity of Gadolinium to the Freshwater Crustacean Daphnia magna

2021 ◽  
Author(s):  
Irina Blinova ◽  
Aljona Lukjanova ◽  
Heiki Vija ◽  
Anne Kahru
Keyword(s):  
Daphnia Magna ◽  
Freshwater Crustacean

scholarly journals Long Term Exposure to Virgin and Recycled LDPE Microplastics Induced Minor Effects in the Freshwater and Terrestrial Crustaceans Daphnia magna and Porcellio scaber

Polymers ◽  
2021 ◽  
Vol 13 (5) ◽  
pp. 771
Author(s):  
Anita Jemec Kokalj ◽  
Andraž Dolar ◽  
Jelizaveta Titova ◽  
Meeri Visnapuu ◽  
Luka Škrlep ◽  
...  
Keyword(s):  
Immune Response ◽  
Daphnia Magna ◽  
Total Lipid Content ◽  
Mechanical Recycling ◽  
Porcellio Scaber ◽  
Soil P ◽  
Freshwater Crustacean ◽  
Exposure Levels ◽  
Recycled Plastics

The effects of microplastics (MP) are extensively studied, yet hazard data from long-term exposure studies are scarce. Moreover, for sustainable circular use in the future, knowledge on the biological impact of recycled plastics is essential. The aim of this study was to provide long-term toxicity data of virgin vs recycled (mechanical recycling) low density polyethylene (LDPE) for two commonly used ecotoxicity models, the freshwater crustacean Daphnia magna and the terrestrial crustacean Porcellio scaber. LDPE MP was tested as fragments of 39.8 ± 8.82 µm (virgin) and 205 ± 144 µm (recycled) at chronic exposure levels of 1–100 mg LDPE/L (D. magna) and 0.2–15 g LDPE/kg soil (P. scaber). Mortality, reproduction, body length, total lipid content, feeding and immune response were evaluated. With the exception of very low inconsistent offspring mortality at 10 mg/L and 100 mg/L of recycled LDPE, no MP exposure-related adverse effects were recorded for D. magna. For P. scaber, increased feeding on non-contaminated leaves was observed for virgin LDPE at 5 g/kg and 15 g/kg. In addition, both LDPE induced a slight immune response at 5 g/kg and 15 g/kg with more parameters altered for virgin LDPE. Our results indicated different sublethal responses upon exposure to recycled compared to virgin LDPE MP.

Determining the effect of oil sands process-affected water on grazing behaviour of Daphnia magna, long-term consequences, and mechanism

Chemosphere ◽  
2016 ◽  
Vol 146 ◽  
pp. 362-370 ◽  
Author(s):  
Ebrahim Lari ◽  
Steve Wiseman ◽  
Effat Mohaddes ◽  
Garrett Morandi ◽  
Hattan Alharbi ◽  
...  
Keyword(s):  
Daphnia Magna ◽  
Oil Sands ◽  
Long Term Consequences ◽  
Grazing Behaviour

scholarly journals Engines of change: Transposable element mutation rates are high and variable within Daphnia magna

PLoS Genetics ◽  
2021 ◽  
Vol 17 (11) ◽  
pp. e1009827
Author(s):  
Eddie K. H. Ho ◽  
Emily S. Bellis ◽  
Jaclyn Calkins ◽  
Jeffrey R. Adrion ◽  
Leigh C. Latta IV ◽  
...  
Keyword(s):  
Daphnia Magna ◽  
Insertion Site ◽  
Low Frequency ◽  
Interspecific Variation ◽  
Mutation Rates ◽  
Evolutionary Forces ◽  
Genome Wide ◽  
Short And Long Term ◽  
Powerful Mechanism

Transposable elements (TEs) represent a major portion of most eukaryotic genomes, yet little is known about their mutation rates or how their activity is shaped by other evolutionary forces. Here, we compare short- and long-term patterns of genome-wide mutation accumulation (MA) of TEs among 9 genotypes from three populations of Daphnia magna from across a latitudinal gradient. While the overall proportion of the genome comprised of TEs is highly similar among genotypes from Finland, Germany, and Israel, populations are distinguishable based on patterns of insertion site polymorphism. Our direct rate estimates indicate TE movement is highly variable (net rates ranging from -11.98 to 12.79 x 10−5 per copy per generation among genotypes), differing both among populations and TE families. Although gains outnumber losses when selection is minimized, both types of events appear to be highly deleterious based on their low frequency in control lines where propagation is not limited to random, single-progeny descent. With rate estimates 4 orders of magnitude higher than base substitutions, TEs clearly represent a highly mutagenic force in the genome. Quantifying patterns of intra- and interspecific variation in TE mobility with and without selection provides insight into a powerful mechanism generating genetic variation in the genome.

Long-term effects of nanoscaled titanium dioxide on the cladoceran Daphnia magna over six generations

2014 ◽  
Vol 186 ◽  
pp. 180-186 ◽  
Author(s):  
Claudia Jacobasch ◽  
Carolin Völker ◽  
Sabrina Giebner ◽  
Johannes Völker ◽  
Heiko Alsenz ◽  
...  
Keyword(s):  
Titanium Dioxide ◽  
Daphnia Magna ◽  
Long Term Effects

Long-term exposure of Daphnia magna to polystyrene microplastic (PS-MP) leads to alterations of the proteome, morphology and life-history

2021 ◽  
pp. 148822
Author(s):  
Benjamin Trotter ◽  
Magdalena V. Wilde ◽  
Julian Brehm ◽  
Evdokia Dafni ◽  
Arlinda Aliu ◽  
...  
Keyword(s):  
Life History ◽  
Daphnia Magna

Caloric content of Daphnia magna as reflect of propanil stress during a short-term exposure and its relationship to long-term responses

2013 ◽  
Vol 35 (3) ◽  
pp. 465-472 ◽  
Author(s):  
Mª José Villarroel ◽  
Encarna Sancho ◽  
Enrique Andreu-Moliner ◽  
Mª Dolores Ferrando
Keyword(s):  
Daphnia Magna ◽  
Caloric Content ◽  
Short Term ◽  
Short Term Exposure
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