Insecticidal activity of Jatropha curcas extracts against housefly, Musca domestica
2015
Chauhan, Nitin | Kumar, Peeyush | Mishra, Sapna | Verma, Sharad | Malik, Anushree | Sharma, Satyawati
The hexane and ether extracts of leaves, bark and roots of Jatropha curcas were screened for their toxicity against different developmental stages of housefly. The larvicidal, pupicidal and adulticidal activities were analysed at various concentrations (0.78–7.86 mg/cm²) of hexane and ether extracts. The lethal concentration values (LC₅₀) of hexane extract of J. curcas leaves were 3.0 and 0.27 mg/cm² for adult and larval stages of housefly, respectively, after 48 h. Similarly, the ether extract of leaf showed the LC₅₀ of 2.20 and 4.53 mg/cm² for adult and larval stages of housefly. Least toxicity was observed with hexane root extract of J. curcas with LC₅₀ values of 14.18 and 14.26 mg/cm² for adult and larvae of housefly, respectively, after 48 h. The variation in LC₅₀ against housefly pupae was found to be 8.88–13.10 mg/cm² at various J. curcas extract concentrations. The GC-MS analysis of J. curcas leaf extract revealed the presence of trans-phytol (60.81 %), squalene (28.58 %), phytol (2.52 %) and nonadecanone (1.06 %) as major components that could be attributed for insecticidal activity of J. curcas extracts.
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