Bioaccumulation and toxicity of selenium in Chironomus decorus larvae fed a diet of seleniferous Selenastrum capricornutum

The accumulation, transfer, and toxicity of selenium were examined in a simple laboratory food chain consisting of the green algae Selenastrum capricornutum and the midge Chironomus decorus. The S. capricornutum were cultured in three concentrations of selenite-0, 10, and 40 mu g Se/l- and four conc...

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Bibliographic Details
Published in:Archives of environmental contamination and toxicology 1995-07, Vol.29 (1), p.104-109
Main Authors: Malchow, D.E. (University of California, Davis, CA.), Knight, A.W, Maier, K.J
Format: Article
Language:English
Subjects:
ALGAE
ALIMENTACION
ALIMENTATION
Animal, plant and microbial ecology
Applied ecology
Biological and medical sciences
Chironomidae
CHIRONOMUS
Chironomus decorus
CONCENTRATION
CRECIMIENTO
CROISSANCE
Diptera
ECOTOXICOLOGY
Ecotoxicology, biological effects of pollution
FEEDING
Fresh water environment
Freshwater
Fundamental and applied biological sciences. Psychology
GROWTH
INHIBICION
INHIBITION
LARVAE
LARVAS
LARVE
Selenastrum capricornutum
SELENIO
SELENIUM
TOXICIDAD
TOXICITE
TOXICITY
TOXICOLOGIA
TOXICOLOGIE
TOXICOLOGY
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Summary:The accumulation, transfer, and toxicity of selenium were examined in a simple laboratory food chain consisting of the green algae Selenastrum capricornutum and the midge Chironomus decorus. The S. capricornutum were cultured in three concentrations of selenite-0, 10, and 40 mu g Se/l- and four concentrations of selenate-0, 4, 10, and 40 mu g Se/l. No Se accumulation was detected in midge larvae after 24 h of exposure to all treatment diets. After 48 h, midges exposed to algal diets containing Se concentration of greater than 2.84 mu g Se/g exhibited significantly higher Se concentrations compared to controls. After 96 h, significant differences in midge tissue Se concentrations were observed in midge larvae exposed to diets with greater than 2.11 mu g Se/g, which also resulted in significantly reduced larval growth.
ISSN:0090-4341
1432-0703
DOI:10.1007/BF00213094