| Feeding and Growth Responses of the Snail Theba pisana to Dietary Metal Exposure. | |
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MedLine Citation:
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PMID: 20563800 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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The effects of dietary exposure to copper (Cu), lead (Pb), and zinc (Zn) on feeding activities, growth response, and mortality of Theba pisana snails were studied in 5-week feeding tests. Snails were fed on an artificial diet containing the following Cu, Pb, or Zn concentrations: 0, 50, 100, 500, 1000, 5000, 10,000, and 15,000 μg/g dry food. At the end of 5 weeks, the food consumption rate was decreased with increasinges in both metal concentrations and time of exposure. The estimated concentrations of metals that reduces food consumption to 50% (EC(50)) after 5 weeks were 56, 118, and 18 μg/g dry food for Cu, Pb, and Zn, respectively. All tested metals in the diet were found to inhibit growth of the snails in a dose-dependent manner. The toxic effect on growth of the tested metals could be arranged in the order Cu > Zn > Pb. The cumulative percentage mortality among snails fed a Cu- or Zn-contaminated diet was 73.3% and the respective value for a Pb-contaminated diet was 13.3%. There was a positive correlation between growth coefficient and food consumption for all tested metals. |
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Authors:
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K S El-Gendy; M A Radwan; A F Gad |
Publication Detail:
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Type: Journal Article Date: 2010-06-20 |
Journal Detail:
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Title: Archives of environmental contamination and toxicology Volume: 60 ISSN: 1432-0703 ISO Abbreviation: Arch. Environ. Contam. Toxicol. Publication Date: 2011 Feb |
Date Detail:
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Created Date: 2011-01-25 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0357245 Medline TA: Arch Environ Contam Toxicol Country: United States |
Other Details:
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Languages: eng Pagination: 272-80 Citation Subset: IM |
Affiliation:
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Pesticide Chemistry Department, Faculty of Agriculture, University of Alexandria, Alexandria, Egypt, kawther52@hotmail.com. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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