Bioassay Indication of Nemagon Toxicity on Daphnia magna (Straus 1820)

Author(s): Moshe Gophen

Abstract

A Bioassay test of the toxic effect of Nemagon on the survival rate of Daphnia magna (Straus 1820) was carried out. Seven levels of dilution (10-2 - 10-9) were tested in a 100 ml volume of filtered tap water, and the Daphnia conditions were observed and documented. Two trials were carried out: (1): Nemagon dilutions which were not incubated and (2): 24 hours of dilutions incubation prior to Daphnid’s placing. Nemagon was less effective after incubation. A percentage of 50% and 100% mortalities were recorded. The high level of toxicity of Nemagon was confirmed.

10.21746/ijbio.2016.01.007

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