Document Detail

Metabolic measures of male southern toads (Bufo terrestris) exposed to coal combustion waste.
MedLine Citation:
PMID:  16448834     Owner:  NLM     Status:  MEDLINE    
Southern toads (Bufo terrestris) are found in coal fly ash collection basins associated with coal-burning electrical power plants. These basins contain large amounts of trace metals and organisms found in these basins are known to accumulate large quantities of metals. Studies on a variety of organisms exposed to trace metals found that they experience a significant increase in standard metabolic rate. We experimentally exposed southern toads to metal-contaminated sediment and food and measured changes in standard and exercise metabolic rates as well as changes in body, liver and muscle mass, blood glucose, and corticosterone. We found that toads exposed to trace metal contamination gained significantly less mass (18.3 %) than control toads (31.3%) when food was limited and experienced significantly decreased RQ after exercise. However, contaminated toads did not experience changes in standard (x control = 0.114 +/- 0.016 mL O2 g(-1) h(-1); x (ash)=0.109 +/- 0.013 mL O2 g(-1) h(-1), p = 0.08) or exercise metabolic rates (x control = 0.53 +/- 0.06 mL O2 g(-1) h(-1); x ash =0.44 +/- 0.04 mL O2 g(-1) h(-1), p = 0.47) plasma glucose levels (p = 0.6), and hepatic or muscle percentage indices (p > 0.2 in all cases) whether food was limited or not.
Chelsea K Ward; Arthur G Appel; Mary T Mendonça
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2006-01-31
Journal Detail:
Title:  Comparative biochemistry and physiology. Part A, Molecular & integrative physiology     Volume:  143     ISSN:  1095-6433     ISO Abbreviation:  Comp. Biochem. Physiol., Part A Mol. Integr. Physiol.     Publication Date:  2006 Mar 
Date Detail:
Created Date:  2006-02-28     Completed Date:  2006-05-04     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  9806096     Medline TA:  Comp Biochem Physiol A Mol Integr Physiol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  353-60     Citation Subset:  IM    
Department of Biology, Auburn University, Montgomery, P.O. Box 244023, Montgomery, AL 36124-4023, USA.
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MeSH Terms
Blood Glucose / metabolism
Bufonidae / metabolism*
Coal / toxicity*
Corticosterone / blood
Environmental Pollutants / analysis*
Liver / anatomy & histology
Motor Activity
Muscles / anatomy & histology
Organ Size
Oxygen Consumption
Trace Elements / toxicity
Waste Products / adverse effects*
Reg. No./Substance:
0/Blood Glucose; 0/Coal; 0/Environmental Pollutants; 0/Trace Elements; 0/Waste Products; 50-22-6/Corticosterone

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

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