Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/108735
Type: Artigo de periódico
Title: Toxic Effects Of Dietary Of Al3+ Ions In Tilapias (oreochromis Niloticus) And Protective Effect Of Zn2+
Author: Santos L.B.
Paulino A.T.
Tambourgi E.B.
de Cinque Almeida V.
Abstract: The lethal effects of aluminum ion (Al3+) in tilapia (Oreochromis niloticus) raised in concrete tanks were investigated. Tilapias were fed daily with commercial feed enriched with known concentrations of Al3+ and analyzed by differential pulse anodic stripping voltammetry (DPASV). The concentrations of Al3+ in feces, water, muscle tissue, viscera, and heads were determined every 3 months for a period of 365 days. The Tilapia head was the most affected tissue by Al3+. In general, Al3{thorn} bioaccumulation reached the lethal dose (LD50) after 335 days of experiment as follows: 34.9mg kg -1 (muscle tissue), 88.2mg kg-1 (viscera), and 126.9mg kg-1 (head without gills). After determining Cu2+, Zn2+, and Ca2+ by absorption spectrometry, a decrease in the Ca2+ concentration was noted in the head during the experimental period. These observations were associated with the occurrence of a decalcification in the bone tissue in the presence of Al3+. In contrast, it was found that Zn2+ ions may act as a protective agent against Al3+-induced contamination. © 2011 Taylor & Francis.
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Rights: fechado
Identifier DOI: 10.1080/02772248.2010.486232
Address: http://www.scopus.com/inward/record.url?eid=2-s2.0-78649418529&partnerID=40&md5=c799dbd183df59f6f98f2fa08f63b62a
Date Issue: 2011
Appears in Collections:Unicamp - Artigos e Outros Documentos

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