Lipaphis erysimi

Srivastava, A. and Kumar, A. (1 999) Bioefficacy of some plant extracts against Lipaphis erysimi (Kalt.) under laboratory conditions. Journal of Insect Science 1 2(1), 90-91. 

We have recently reported the first purification of an insect myrosinase and its partial characterization from the cabbage aphid (Brevicoryne brassicae).9 Of all aphids examined for myrosinase,10 only the crucifer specialists, B. brassicae and Lipaphis erysimi, possessed activity although some other polyphagous aphids such as Myzus persicae can also feed on crucifers. 

SPATIAL ORGANIZATION OF MYROSINASE WITHIN BREVICORYNE BRASSICAE AND LIPAPHIS ERYSIMI... 

The alarm pheromones of aphids often are sesquiterpenes such as ( )-3-famesene (71) and germacrene A (72) (Bowers, 1985). Upon release of these compounds, aphids drop from the plant on which they have been feeding. The compounds are very labile and break down in only a few minutes. This is important to prevent the aphids from being in a constant state of alarm (Bowers, 1985). Although this sesquiterpene elicits response in many species of aphids, the turnip aphid Lipaphis (Hyadaphis) erysimi responds only weakly. Addition of plant-derived isothiocyanates to p-famesene has a synergistic effect and greatly enhances the effect of P-famesene (71) (Dawson et al., 1987 Harbome, 1989). 

Dawson, G. W., D. C. Griffiths, J. A. Pickett, L. J. Wadhams, and C. M. Woodcock, Plant-derived synergists of alarm pheromone from turnip aphid, Lipaphis (Hyadaphis) erysimi (Homo-ptera, Aphididae), J. Chem. EcoL, 13, 1663-1671 (1987). 

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