Please use this identifier to cite or link to this item: https://repositorio.inpa.gov.br/handle/1/16919
Title: Physiological impacts and bioaccumulation of dietary Cu and Cd in a model teleost: The Amazonian tambaqui (Colossoma macropomum)
Authors: Giacomin, Marina Mussoi
Vilarinho, Gisele C.C.
Castro, Katia F.
Ferreira, Márcio Soares
Duarte, Rafael Mendonça
Wood, Chris M.
Val, Adalberto Luis
Keywords: Alcohol
Ammonia
Cadmium
Copper
Glucose
Hemoglobin
Intestine Enzyme
Ion
Nitrogen
Urea
Adenosine Triphosphatase (potassium Sodium)
Cadmium
Copper
Fish Protein
Hydrocortisone
Potassium
Sodium
Bioaccumulation
Cadmium
Copper
Diet
Food Consumption
Hypoxia
Metabolism
Physiological Response
Pollution Effect
Teleost
Alcohol Blood Level
Amazonas
Animals Cell
Animals Experiment
Animals Tissue
Aquatic Environment
Bioaccumulation
Biotransformation
Body Growth
Body Weight Gain
Colossoma Macropomum
Concentration (parameters)
Controlled Study
Enzyme Activity
Fluid Transport
Food Intake
Gill
Glucose Blood Level
Growth Disorder
Hematocrit
Hydrocortisone Blood Level
Hypoxia
In Vitro Study
Intestine Fluid
Lactate Blood Level
Metabolite
Metal Metabolism
Mineral Blood Level
Mineral Intake
Nonhuman
Oxygen Blood Level
Oxygen Consumption
Oxygen Tension
Oxygen Transport
Physiology
Priority Journal
Tissue Level
Tissue Specificity
Animals
Blood
Chemistry
Diet
Fish
Gastrointestinal Tract
Growth, Development And Aging
Kidney
Liver
Metabolism
Pathology
Water Pollutant
Animalsia
Colossoma Macropomum
Colossoma Marcopomum
Teleostei
Animal
Cadmium
Copper
Diet
Fish Proteins
Fishes
Gastrointestinal Tract
Gills
Hydrocortisone
Hypoxia
Kidney
Liver
Oxygen Consumption
Potassium
Sodium
Sodium-potassium-exchanging Atpase
Water Pollutants, Chemical
Issue Date: 2018
metadata.dc.publisher.journal: Aquatic Toxicology
metadata.dc.relation.ispartof: Volume 199, Pags. 30-45
Abstract: Increasing anthropogenic activities in the Amazon have led to elevated metals in the aquatic environment. Since fish are the main source of animal protein for the Amazonian population, understanding metal bioaccumulation patterns and physiological impacts is of critical importance. Juvenile tambaqui, a local model species, were exposed to chronic dietary Cu (essential, 500 μg Cu/g food) and Cd (non-essential, 500 μg Cd/g food). Fish were sampled at 10–14, 18–20 and 33–36 days of exposure and the following parameters were analyzed: growth, voluntary food consumption, conversion efficiency, tissue-specific metal bioaccumulation, ammonia and urea-N excretion, O2 consumption, Pcrit, hypoxia tolerance, nitrogen quotient, major blood plasma ions and metabolites, gill and gut enzyme activities, and in vitro gut fluid transport. The results indicate no ionoregulatory impacts of either of the metal-contaminated diets at gill, gut, or plasma levels, and no differences in plasma cortisol or lactate. The Cd diet appeared to have suppressed feeding, though overall tank growth was not affected. Bioaccumulation of both metals was observed. Distinct tissue-specific and time-specific patterns were seen. Metal burdens in the edible white muscle remained low. Overall, physiological impacts of the Cu diet were minimal. However dietary Cd increased hypoxia tolerance, as evidenced by decreased Pcrit, increased time to loss of equilibrium, a lack of plasma glucose elevation, decreased plasma ethanol, and decreased NQ during hypoxia. Blood O2 transport characteristics (P50, Bohr coefficient, hemoglobin, hematocrit) were unaffected, suggesting that tissue level changes in metabolism accounted for the greater hypoxia tolerance in tambaqui fed with a Cd-contaminated diet. © 2018 Elsevier B.V.
metadata.dc.identifier.doi: 10.1016/j.aquatox.2018.03.021
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