𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Acute toxicity bioassay usingDaphnia obtusa as a test organism

✍ Scribed by Bulus Rossini, Gustavo D. ;Ronco, Alicia E.

Book ID
101259057
Publisher
John Wiley and Sons
Year
1996
Tongue
English
Weight
343 KB
Volume
11
Category
Article
ISSN
1053-4725

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✦ Synopsis

The introduction of the ciadoceran Daphnia obtusa as a test organism in toxicity bioassays was considered. Development of bioassay included strain isolation, culture conditions, and toxicity test adaptation. Acute toxicity tests for Cr(VI), Mn(ll), Cu(ll), Cd(ll), and Hg(ll), phenol, sodium dodecyl sulfate, methanol, ethanol, and paraquat at 24 and 48 h of exposure show a sensitivity within the range reported for other cladocerans or fish. Sensitivity to carbaryl was higher than that found for fish. These results and the spread distribution of the species in the South of South America makes the bioassay a possible good option for the monitoring of toxicants in freshwater systems in the region. 0 1996 by

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