Sublethal toxicity and accumulation of cadmium in Tilapia aurea

Juvenile Tilapia aurea were exposed to 6.8, 14, 28 and 52 ug cadmium per litre (measured concentrations) for 16 weeks. There were no effects on fish survival, growth, total moisture content, fat content, protein content, ash content, or haemoglobin concentration. A dose related decrease in haematocr...

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Bibliographic Details
Published in:Bulletin of environmental contamination and toxicology 1988-09, Vol.41 (3), p.404-411
Main Authors: PAPOUTSOGLOU, S. E, ABEL, P. D
Format: Article
Language:English
Subjects:
Animals
Biological and medical sciences
Cadmium - metabolism
Cadmium - toxicity
Chemical and industrial products toxicology. Toxic occupational diseases
Fishes - physiology
Growth - drug effects
Hematocrit
Medical sciences
Metals and various inorganic compounds
Muscles - metabolism
Spectrophotometry, Atomic
Toxicology
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Summary:Juvenile Tilapia aurea were exposed to 6.8, 14, 28 and 52 ug cadmium per litre (measured concentrations) for 16 weeks. There were no effects on fish survival, growth, total moisture content, fat content, protein content, ash content, or haemoglobin concentration. A dose related decrease in haematocrit values was observed after 10 weeks' exposure but not after 16 weeks. Cadmium concentrations in the muscle of treated fish increased with exposure concentration, and ranged from 0.12 mg per kg in the 6.8 ug per litre group to 0.92 mg per kg in the 52 ug per litre group (control value 0.06 mg per kg). Although few national and international authorities had set limits for cadmium in foodstuff, Norway and the Netherlands were reported to have set a limit of 0.5 mg per kg, a value exceeded in fish from the 28 and 52 ug cadmium per litre treatment groups.
ISSN:0007-4861
1432-0800
DOI:10.1007/BF01688886