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Accumulation and regulation of zinc in Daphnia magna: links with homeostasis and toxicity

Brita Muyssen (UGent) and Colin Janssen (UGent)
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Abstract
Zinc accumulation in Daphnia magna was investigated, and the results were linked to the previously established optimal concentration range for zinc and D. magna. It was observed that organisms cultured in this optimal range (300-600 mug Zn/L) contained 212 +/- 57 to 254 +/- 79 mug Zn/g dry Weight. Lower and higher zinc contents were obtained after acclimation to previously established Culture concentrations inducing deficiency and toxicity, respectively. The calculation of bioconcentration factors indicated that zinc was actively regulated, at least up to a concentration of 600 mug Zn/L. Zinc uptake and elimination are rapid processes; major increases and decreases in body content occurred within I day. Zinc concentrations in daphnids exposed to 600 mug Zn/L fluctuated with 2- to 3-day intervals, suggesting a role of molting in the regulation and elimination of zinc.
Keywords
ORGANISMS, COPPER, STRATEGIES, BIOACCUMULATION, WATER, CADMIUM, MIDGE CHIRONOMUS-RIPARIUS, METAL-ADAPTED POPULATIONS

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Chicago
Muyssen, Brita, and Colin Janssen. 2002. “Accumulation and Regulation of Zinc in Daphnia Magna: Links with Homeostasis and Toxicity.” Archives of Environmental Contamination and Toxicology 43 (4): 492–496.
APA
Muyssen, B., & Janssen, C. (2002). Accumulation and regulation of zinc in Daphnia magna: links with homeostasis and toxicity. ARCHIVES OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY, 43(4), 492–496.
Vancouver
1.
Muyssen B, Janssen C. Accumulation and regulation of zinc in Daphnia magna: links with homeostasis and toxicity. ARCHIVES OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY. 2002;43(4):492–6.
MLA
Muyssen, Brita, and Colin Janssen. “Accumulation and Regulation of Zinc in Daphnia Magna: Links with Homeostasis and Toxicity.” ARCHIVES OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 43.4 (2002): 492–496. Print.
@article{157572,
  abstract     = {Zinc accumulation in Daphnia magna was investigated, and the results were linked to the previously established optimal concentration range for zinc and D. magna. It was observed that organisms cultured in this optimal range (300-600 mug Zn/L) contained 212 +/- 57 to 254 +/- 79 mug Zn/g dry Weight. Lower and higher zinc contents were obtained after acclimation to previously established Culture concentrations inducing deficiency and toxicity, respectively. The calculation of bioconcentration factors indicated that zinc was actively regulated, at least up to a concentration of 600 mug Zn/L. Zinc uptake and elimination are rapid processes; major increases and decreases in body content occurred within I day. Zinc concentrations in daphnids exposed to 600 mug Zn/L fluctuated with 2- to 3-day intervals, suggesting a role of molting in the regulation and elimination of zinc.},
  author       = {Muyssen, Brita and Janssen, Colin},
  issn         = {0090-4341},
  journal      = {ARCHIVES OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY},
  keyword      = {ORGANISMS,COPPER,STRATEGIES,BIOACCUMULATION,WATER,CADMIUM,MIDGE CHIRONOMUS-RIPARIUS,METAL-ADAPTED POPULATIONS},
  language     = {eng},
  number       = {4},
  pages        = {492--496},
  title        = {Accumulation and regulation of zinc in Daphnia magna: links with homeostasis and toxicity},
  url          = {http://dx.doi.org/10.1007/s00244-002-1245-9},
  volume       = {43},
  year         = {2002},
}

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