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Accumulation and regulation of zinc in Daphnia magna: links with homeostasis and toxicity.
Arch Environ Contam Toxicol. 2002 Nov; 43(4):492-6.AE

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 microg Zn/L) contained 212 +/- 57 to 254 +/- 79 microg 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 microg Zn/L. Zinc uptake and elimination are rapid processes; major increases and decreases in body content occurred within 1 day. Zinc concentrations in daphnids exposed to 600 microg Zn/L fluctuated with 2- to 3-day intervals, suggesting a role of molting in the regulation and elimination of zinc.

Authors+Show Affiliations

Muyssen BT
Laboratory of Environmental Toxicology and Aquatic Ecology, Ghent University, J. Plateaustraat 22, Belgium. brita.muyssen@rug.ac.be
Janssen CR
No affiliation info available

MeSH

Adaptation, PhysiologicalAnimalsDaphniaEnvironmental ExposureMoltingTissue DistributionWater PollutantsZinc

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

12399922

Citation

Muyssen, B T A., and C R. Janssen. "Accumulation and Regulation of Zinc in Daphnia Magna: Links With Homeostasis and Toxicity." Archives of Environmental Contamination and Toxicology, vol. 43, no. 4, 2002, pp. 492-6.
Muyssen BT, Janssen CR. Accumulation and regulation of zinc in Daphnia magna: links with homeostasis and toxicity. Arch Environ Contam Toxicol. 2002;43(4):492-6.
Muyssen, B. T., & Janssen, C. R. (2002). Accumulation and regulation of zinc in Daphnia magna: links with homeostasis and toxicity. Archives of Environmental Contamination and Toxicology, 43(4), 492-6.
Muyssen BT, Janssen CR. Accumulation and Regulation of Zinc in Daphnia Magna: Links With Homeostasis and Toxicity. Arch Environ Contam Toxicol. 2002;43(4):492-6. PubMed PMID: 12399922.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Accumulation and regulation of zinc in Daphnia magna: links with homeostasis and toxicity. AU - Muyssen,B T A, AU - Janssen,C R, PY - 2002/10/26/pubmed PY - 2002/11/26/medline PY - 2002/10/26/entrez SP - 492 EP - 6 JF - Archives of environmental contamination and toxicology JO - Arch Environ Contam Toxicol VL - 43 IS - 4 N2 - 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 microg Zn/L) contained 212 +/- 57 to 254 +/- 79 microg 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 microg Zn/L. Zinc uptake and elimination are rapid processes; major increases and decreases in body content occurred within 1 day. Zinc concentrations in daphnids exposed to 600 microg Zn/L fluctuated with 2- to 3-day intervals, suggesting a role of molting in the regulation and elimination of zinc. SN - 0090-4341 UR - https://www.unboundmedicine.com/medline/citation/12399922/Accumulation_and_regulation_of_zinc_in_Daphnia_magna:_links_with_homeostasis_and_toxicity_ DB - PRIME DP - Unbound Medicine ER -