Document Detail


Sublethal copper toxicity and food response in the freshwater crayfish Cambarus bartonii (Cambaridae, Decapoda, Crustacea).
MedLine Citation:
PMID:  10903830     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Food response preceding and following exposure to Cu concentrations of 0.00, 0.02, and 0.2 mg/L was observed in male and female Cambarus bartonii from an uncontaminated, freshwater lake. The animals were tested in a Y-maze. Control animals demonstrated food localization, and the treated animals, either no localization or slight food avoidance. The latency for localization in the Cu-exposed males increased. Females revealed slight increases in latency. There were no significant differences between the low and the high Cu concentration groups in food detection or latency. However, there was an increase in mortality in the higher concentration group and significant difference in mortality among three copper concentrations (P<0.02). Females seem to recover from Cu-induced impairment slightly faster than males, suggesting a more efficient mechanism for detoxifying copper. Female mortality, however, remained equally high in the high Cu concentration group. The toxic effects of copper persist after removal of the toxicant and occur at concentrations much lower than reported lethal levels.
Authors:
M Sherba; D W Dunham; H H Harvey
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Ecotoxicology and environmental safety     Volume:  46     ISSN:  0147-6513     ISO Abbreviation:  Ecotoxicol. Environ. Saf.     Publication Date:  2000 Jul 
Date Detail:
Created Date:  2000-09-01     Completed Date:  2000-09-01     Revised Date:  2003-11-14    
Medline Journal Info:
Nlm Unique ID:  7805381     Medline TA:  Ecotoxicol Environ Saf     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  329-33     Citation Subset:  IM    
Copyright Information:
Copyright 2000 Academic Press.
Affiliation:
Department of Zoology, University of Toronto, 110 St. George Street, Toronto, Ontario M5S 3G5, Canada.
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MeSH Terms
Descriptor/Qualifier:
Animals
Astacoidea / drug effects*,  physiology
Copper / toxicity*
Dose-Response Relationship, Drug
Feeding Behavior / drug effects*
Female
Male
Time Factors
Chemical
Reg. No./Substance:
7440-50-8/Copper

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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