Genotoxicity of metacid established through the somatic and germ line mosaic assays and the sex-linked recessive lethal test in Drosophila. 1987

N K Tripathy, and L Dey, and B Majhi, and C C Das
Department of Zoology, Berhampur University, Orissa, India.

The mutagenic potential of metacid (methyl parathion), an anticholinesterase organophosphate pesticide, has been studied in the Drosophila eye, wing and female germ line assays and the sex-linked recessive lethal tests. Larvae 24 h, 48 h and 72 h old, heterozygous for various recessive genetic markers on the first and third chromosomes, were exposed to the LD50 and half of this dose for different periods of time. The eyes and wings were checked for the presence of mosaic spots and eggs laid by the females for germ line mosaicism. The M-5 technique was used to detect the induction of sex-linked recessive lethals. It is concluded that metacid is mutagenic in somatic and germ line cells of Drosophila and induces sex-linked recessive lethals in immature male germ cells.

UI MeSH Term Description Entries
D008297 Male Males
D008743 Methyl Parathion The methyl homolog of parathion. An effective, but highly toxic, organothiophosphate insecticide and cholinesterase inhibitor. Metaphos,Parathion Methyl,Dalf,Metacid 50,Methylparathion,Vofatox,Wofatox
D009030 Mosaicism The occurrence in an individual of two or more cell populations of different chromosomal constitutions, derived from a single ZYGOTE, as opposed to CHIMERISM in which the different cell populations are derived from more than one zygote.
D009153 Mutagens Chemical agents that increase the rate of genetic mutation by interfering with the function of nucleic acids. A clastogen is a specific mutagen that causes breaks in chromosomes. Clastogen,Clastogens,Genotoxin,Genotoxins,Mutagen
D010063 Ovum A mature haploid female germ cell extruded from the OVARY at OVULATION. Egg,Egg, Unfertilized,Ova,Eggs, Unfertilized,Unfertilized Egg,Unfertilized Eggs
D010278 Parathion A highly toxic cholinesterase inhibitor that is used as an acaricide and as an insecticide. E-605,Ethyl Parathion,Phosphostigmine,Thiofos,Thiophos,Parathion, Ethyl
D004331 Drosophila melanogaster A species of fruit fly frequently used in genetics because of the large size of its chromosomes. D. melanogaster,Drosophila melanogasters,melanogaster, Drosophila
D005123 Eye The organ of sight constituting a pair of globular organs made up of a three-layered roughly spherical structure specialized for receiving and responding to light. Eyes
D005260 Female Females
D005804 Genes, Lethal Genes whose loss of function or gain of function MUTATION leads to the death of the carrier prior to maturity. They may be essential genes (GENES, ESSENTIAL) required for viability, or genes which cause a block of function of an essential gene at a time when the essential gene function is required for viability. Alleles, Lethal,Allele, Lethal,Gene, Lethal,Lethal Allele,Lethal Alleles,Lethal Gene,Lethal Genes

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