Mosquitocidal activity

M. salicifolia and displayed mosquitocidal activity on fourth instar Aedes aegyptii L. Culicidae at 15,25, 30,60, 80, and 100 ppm, respectively in 24 h [11, 12] (Table 2). Additionally, the sequential hexane, ethyl acetate, and methanol extracts of M. denudata and M. kobus var. stellata demonstrated growth inhibitory activity on gypsy moth larvae (Lymantria dispar) at 250 ppm [12], Citral and the phenylpropanoids are common in the essential oils of many plant genera. Citral, tram-anethole, and methyl chavicol have been detected in the essential oils of M. salicifolia and M. kobus [70, 71], Methyl eugenol has been detected in trace quantities by GC and MS in the leaf, branchlet, and essential oils from the flower bud of M. liliflora Desr. [72],... 

Table 2. Mosquitocidal Activity of Parthenolide (1), Costunolide (2), Myristicin (47), Trans-anethole (48), Methyl Eugenol (49), Isomethyl Eugenol (50), and Citral (51) on 4 Instar A aegyptii 11,12]...

Lepidopteran insect-killing Bacillus sphaericus with no mosquitocidal activity and a novel insecticidal factor (H. Nishiwaki, Kinki Univ., Japan)... 

In a later study, E. purpurea alkamides were also found to inhibit both isoforms of cyclooxygenase however, inhibition of COX-1 was greater than for COX-2 (Clifford et al. 2002). Mosquitocidal activity of the alkamides was also confirmed in this study. 

Mosquitocidal and Knockdown Activity Knockdown and mortality activity toward mosquito, Culex quinquefasciatus, was carried out for the metabolites of (+)- (418ab) and (-)-pinane-2,3-diols (418ab ) and (+) and ( ) 2-hydroxy-3-pinanones (414 and 414 ) by Dr. Radhika Samarasekera, Industrial Technology Institute, Sri Lanka. ( ) 2 Hydroxy-3-pinanone (414 ) showed the mosquito knockdown activity and the mosquitocidal activity at the concentration of 1% and 2% (Table 19.16). 

Eckenbach, U., Lampman, R.L., Seigler, D.S. et al. (1999) Mosquitocidal activity of acetylenic compounds from Cryptotaenia canadensis. J. Chem. Ecol, 25, 1885-1893. 

E. T. Oparaocha et al. Preliminary study on mosquito repellent and mosquitocidal activities of Ocimum gratissimum (L.) grown in eastern Nigeria. J Vector Borne Dis, 47, 45, 2010. 

The three bioactive carbazole alkaloids, e.g. mahanimbine, murrayanol and maha-nine, were found to be mosquitocidal and antimicrobial. The antioxidant activity of carbazoles (l,l-diphenyl-2-picryl hydrazyl DPH) from M. koenigii was found to be in order ascorbic acid > bismurraya foline E > euchestine B, mahanine and a-tocopherol... 

Among these different biopesticides, bacterial biopesticides are the most intensively studied and widely used. Several insect pathogenic bacteria are known to produce proteins toxic to certain insects. Bacillus thurin ensis (Bt) is the most well-known bacterium for its potent insecticidal proteins. These proteins are highly specific to certain orders of insects. Insects sensitive to Bt include those of Coleoptera, Diptera, and Lepidoptera. Bacillus sphaericus and Clostridium bifermentans are known for their mosquitocidal proteins. Paenibadllus popilliae produces a scarab active toxin structurally similar to common insecticidal proteins... 

The oil has antimicrobial activities against bacteria and fungi, as well as mosquitocidal... 

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