Document Detail

Feeding and Growth Responses of the Snail Theba pisana to Dietary Metal Exposure.
MedLine Citation:
PMID:  20563800     Owner:  NLM     Status:  In-Data-Review    
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.
K S El-Gendy; M A Radwan; A F Gad
Publication Detail:
Type:  Journal Article     Date:  2010-06-20
Journal Detail:
Title:  Archives of environmental contamination and toxicology     Volume:  60     ISSN:  1432-0703     ISO Abbreviation:  Arch. Environ. Contam. Toxicol.     Publication Date:  2011 Feb 
Date Detail:
Created Date:  2011-01-25     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0357245     Medline TA:  Arch Environ Contam Toxicol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  272-80     Citation Subset:  IM    
Pesticide Chemistry Department, Faculty of Agriculture, University of Alexandria, Alexandria, Egypt,
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