Document Detail


Effects of aluminum on the energetic substrates in neotropical freshwater Astyanax bimaculatus (Teleostei: Characidae) females.
MedLine Citation:
PMID:  22960447     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
We investigated the effects of acidic pH and acute aluminum (Al) exposure on the metabolic substrates of Astyanax bimaculatus, and on the ability of these animals to recover in clean water. After an acclimation period, sexually mature A. bimaculatus females were sorted into six glass aquaria with three experimental groups: control in neutral pH (7.0), acidic pH (5.5), and Al (0.5mg·L(-1)) in acidic pH (5.5). After a 96h treatment, 10 animals from each experimental group were sampled and the rest were returned to clean water in neutral pH without Al for a recovery period of 96h. The acidic pH, either alone or combined with Al, decreased T4 levels, whereas Al exposure increased T3 levels. Recovery of T3 levels occurred after 96h. Al exposure decreased ovary and plasma proteins, muscle glycogen contents, and hepatic lipids due to lipoperoxidation. In the recovery phase, lipids decreased in most tissues, probably to re-establish ovary protein and hepatic glycogen. A. bimaculatus prioritized the use of energetic resources during acclimatization to Al instead of prioritizing reproduction, thereby avoiding the ovulation of impaired eggs.
Authors:
Vanessa A R O Vieira; Tiago G Correia; Renata G Moreira
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-8-29
Journal Detail:
Title:  Comparative biochemistry and physiology. Toxicology & pharmacology : CBP     Volume:  -     ISSN:  1532-0456     ISO Abbreviation:  Comp. Biochem. Physiol. C Toxicol. Pharmacol.     Publication Date:  2012 Aug 
Date Detail:
Created Date:  2012-9-10     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  100959500     Medline TA:  Comp Biochem Physiol C Toxicol Pharmacol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2012. Published by Elsevier Inc.
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