Please use this identifier to cite or link to this item:
Title: Dietary tissue cadmium accumulation in an amazonian teleost (Tambaqui, Colossoma macropomum Cuvier, 1818)
Authors: Matsuo, Aline Y.O.
Val, Adalberto Luis
Keywords: Cadmium
Atomic Absorption Spectrometry
Tissue Distribution
Water Pollutant
Spectrophotometry, Atomic
Time Factors
Tissue Distribution
Water Pollutants, Chemical
Colossoma Macropomum
Colossoma Marcopomum
Oncorhynchus Mykiss
Issue Date: 2007
metadata.dc.publisher.journal: Revista Brasileira de Biologia
metadata.dc.relation.ispartof: Volume 67, Número 4, Pags. 657-661
Abstract: Understanding the effects of metal contamination in the Amazon basin is important because of the potential impact on this region of high biodiversity. In addition, the significance of fish as the primary source of protein for the local human population (living either alongside the Amazon River or in the city of Manaus) highlights the need for information on the metal transfer through the food chain. Bioaccumulation of metals in fish can occur at significant rates through the dietary route, without necessarily resulting in death of the organism. The goal of this work was to expose an economic relevant species from the Amazon basin (tambaqui, Colossoma macropomum) to dietary cadmium (Cd) at concentrations of 0, 50, 100, 200, and 400 μg.g-1 dry food. Fish were sampled on days 15, 30, and 45 of the feeding trials. Tissues were collected for analysis of Cd concentration using graphite furnace atomic absorption spectrophotometry. Cd accumulation in the tissues occurred in the following order: kidney > liver > gills > muscle. Relative to other freshwater fish (e.g., rainbow trout, tilapia), tambaqui accumulated remarkably high levels of Cd in their tissues. Although Cd is known to affect Ca 2+ homeostasis, no mortality or growth impairment occurred during feeding trials.
metadata.dc.identifier.doi: 10.1590/S1519-69842007000400010
Appears in Collections:Artigos

Files in This Item:
File Description SizeFormat 
artigo-inpa.pdf336,58 kBAdobe PDFThumbnail

This item is licensed under a Creative Commons License Creative Commons