ISSN: (Online) 2321 -4155
ISSN: (Print) 2320 -7000

JOURNAL OF INDIAN RESEARCH
VOLUME : 2, ISSUE : 4, October-December, 2014 (ISSN No. : 2321-4155)
 
EFFECT OF MALATHION ON CHROMOSOMAL PATTERN OF Drosophila kikkawai
Parul Gupta & Dr.Ajai Kumar
 
ABSTRACT
Drosophila has long been a favorite model system for studying the relationship between chromatin structure and gene regulation due to the cytological advantages provided by the giant salivary gland polytene chromosomes of third instar larvae. This study emphasize adverse effect of an organophosphate compound, Malathion, on chromosomal pattern in the form of puffing in D.kikkawai. Drosophila kikkawai was selected as model organism for biomonitoring of pesticides due to its genetic importance and coexistence with other insect pests in agriculture field. The pesticide was administered by feeding the larvae at 100ppm, 10ppm, 0.1ppm, 0.01ppm in every 30 ml of food medium. Through chronic toxicity test, the 2 days LC50 was evaluated. In all the concentrations, markable effect on chromosomal pattern was observed. Such an effect of Malathion, is discussed in the light of the effects caused by other insecticides.
 
KEYWORD
Chromosomal pattern, Drosophila kikkawai, genetic importance, Malathion.
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