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Effects of zinc exposure on earthworms, Lumbricus terrestris, in an artificial soil. 2010

Steven M Lev, and Nick Matthies, and Joel W Snodgrass, and Ryan E Casey, and David R Ownby
Urban Environmental Biogeochemistry Laboratory, Towson University, Towson, MD 21252, USA. slev@towson.edu

Earthworms have the potential to act as trophic links for pollutants that accumulate in urban soils. However, many pollutants may act as micronutrients at low concentrations and toxins at higher concentration. When pollutants are also micronutrients, bioaccumulations may initially increase trophic transfer as pollutant concentration increase, but at higher levels toxic effects may limit population size and the potential for trophic transfer. We found support for this model among earthworms exposed to a range of soil Zn levels. Worms showed increasing bioaccumulation of Zn with increasing Zn soil concentrations, but at higher Zn levels worm growth rates decreased.

UI MeSH Term Description Entries
D009835 Oligochaeta A class of annelid worms with few setae per segment. It includes the earthworms such as Lumbricus and Eisenia. Earthworms,Eisenia foetida,Eisenia worm,Lumbricus,Lumbricus terrestris,Eisenia fetida,Earthworm,Eisenia fetidas,Eisenia foetidas,Eisenia worms,Lumbricus terrestri,Oligochaetas,fetida, Eisenia,foetidas, Eisenia,terrestris, Lumbricus,worm, Eisenia
D001822 Body Burden The total amount of a chemical, metal or radioactive substance present at any time after absorption in the body of man or animal. Body Burdens,Burden, Body,Burdens, Body
D001835 Body Weight The mass or quantity of heaviness of an individual. It is expressed by units of pounds or kilograms. Body Weights,Weight, Body,Weights, Body
D004219 District of Columbia A federal area located between Maryland and Virginia on the Potomac river; it is coextensive with Washington, D.C., which is the capital of the United States. Washington, D.C.,Washington, DC
D004784 Environmental Monitoring The monitoring of the level of toxins, chemical pollutants, microbial contaminants, or other harmful substances in the environment (soil, air, and water), workplace, or in the bodies of people and animals present in that environment. Monitoring, Environmental,Environmental Surveillance,Surveillance, Environmental
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D012987 Soil The unconsolidated mineral or organic matter on the surface of the earth that serves as a natural medium for the growth of land plants. Peat,Humus,Soils
D012989 Soil Pollutants Substances which pollute the soil. Use for soil pollutants in general or for which there is no specific heading. Soil Pollutant,Pollutant, Soil,Pollutants, Soil
D014018 Tissue Distribution Accumulation of a drug or chemical substance in various organs (including those not relevant to its pharmacologic or therapeutic action). This distribution depends on the blood flow or perfusion rate of the organ, the ability of the drug to penetrate organ membranes, tissue specificity, protein binding. The distribution is usually expressed as tissue to plasma ratios. Distribution, Tissue,Distributions, Tissue,Tissue Distributions
D015032 Zinc A metallic element of atomic number 30 and atomic weight 65.38. It is a necessary trace element in the diet, forming an essential part of many enzymes, and playing an important role in protein synthesis and in cell division. Zinc deficiency is associated with ANEMIA, short stature, HYPOGONADISM, impaired WOUND HEALING, and geophagia. It is known by the symbol Zn.

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