Some compounds that are bitter‐tasting to humans, both alkaloidal (quinine, quinidine, atropine, caffeine) and non‐alkaloidal (denatonium benzoate, sucrose octaacetate, naringin), deterred feeding and oviposition by Heliothis virescens (F.) in laboratory and field cage experiments. Preliminary electrophysiological studies of gustatory sensilla on the ovipositor of H. virescens provided evidence of 3 neurons, one of which is responsive to sucrose. Preliminary indications are that responses of this neuron may be inhibited by quinine and denatonium benzoate.
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Ramaswamy et al. (1992) studied this question.
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