Effect of host plant odour on the behaviour of the adult cabbage root fly, erioischia brassicae
1967
TRAYNIER, R.M.M.
Laboratory experiments showed that the odour of leaves of host plants stimulated an increase in activity in gravid female E. brassicae while the odour of non-host foliage had little effect. Males and non-gravid females showed very little response to the odour of both types of foliage. Other experiments failed to show any orientation of the flies towards sources of host plant odour, although more flies were caught in traps containing the juice expressed from a host plant than in those containing water. It is suggested that an unoriented activation of gravid female E. brassicae by host plant odour enhances their chance of being caught in traps emitting the odour, and of making contact with host plants in the field.
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