Chemicals appear to playa major role at evert level of host selection process by insects. Kairomones are interspecific chemical messengers, the adaptive benefit of which falls on the recipient rather than emitter (Brown et al., 1970). According to Vinson (1976), the chemicals that are involved in host-parasite relationship viz., host location and host selection process have been referred to as kairomones which are derived from the host. Many specie~ of parasitoids have been shown to respond to kairomones.
Keywords
Opisina arenosella, Eriborus trochanteratus, Host Location, Kairomones, Larval Crass.
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