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Genotoxicity studies with Cuman L in Drosophila melanogaster

K C Hemavathy1, N B Krishnamurthy

  • 1Department of Studies in Zoology, University of Mysore, Manasa Gangotri, India.

Environmental and Molecular Mutagenesis
|January 1, 1989
PubMed

Insights

Cuman L, a dithiocarbamate fungicide, significantly increased sex-linked recessive lethals in Drosophila melanogaster. However, it did not induce chromosome translocations in the tested fruit flies.

Area of Science:

  • Toxicology and Genetics
  • Environmental Health and Safety

Background:

  • Dithiocarbamate fungicides are widely used in agriculture.
  • Understanding the genotoxic potential of pesticides like Cuman L is crucial for environmental and human health risk assessment.

Purpose of the Study:

  • To evaluate the genotoxic effects of Cuman L, a dithiocarbamate fungicide.
  • To determine if Cuman L induces sex-linked recessive lethals (SLRLs) and chromosome translocations in Drosophila melanogaster.

Main Methods:

  • The larval feeding method was employed using Drosophila melanogaster.
  • Three concentrations of Cuman L (20, 40, and 60 microliters/100 ml) were administered.
  • Assays for sex-linked recessive lethals and II-III chromosome translocations were conducted.

Main Results:

  • Significant increases in sex-linked recessive lethals were observed at all tested concentrations (P < 0.01).
  • Cuman L did not induce any significant II-III chromosome translocations.
  • The fungicide demonstrates mutagenic potential concerning lethals but not chromosomal rearrangements.

Conclusions:

  • Cuman L exhibits mutagenic activity by inducing sex-linked recessive lethals in Drosophila melanogaster.
  • The fungicide does not appear to cause chromosome translocations under the experimental conditions.
  • Further research is warranted to elucidate the specific mechanisms of Cuman L's genotoxicity.

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