Effects of Some Common Poisons in Sucrose Solutions on the Chemoreceptors of the Housefly, Musca domestica L.

Taste Receptor Stimuration by Sweettasting Substances in the Carp

“…For example, saccharin produced nerve discharges in the dog's taste nerve different in spike height from those elicited by sucrose (ANDERSSON et al, 1950), and glycerol failed to stimulate the blowfly's labellar or tarsal hair taste receptors (DETHIER, 1955). All these findings indicate that the mechanisms involved in taste stimulation by chemical substances tasting sweet to humans may vary according to the substance or to the species of animal.…”

“…It is of interest that DETHIER (1955) andDETHIER et al (1956) reported that in the behavioral response of the blowfly, mannose added to levulose markedly reduced the stimulating effectiveness of levulose, while mannose added to dextrose did not affect that of dextrose.…”

“…It has been reported that mercuric chloride inhibits the tarsal sugar receptor of the housefly (DEONIER, 1938 in other animal species (DETHIER, 1955;YUR'EVA, 1957). The effects of these heavy metals were examined in the present study.…”

The Effects of Transition Metals on the Palatal Chemoreceptors of the Carp

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Some heavy metals are known to have an suppressing effect on the taste receptors, including sugar receptors, of insects (DEONIER, 1938;DETHIER, 1955) and a frog (YUR'EVA, 1957) when they are applied externally to the surface of the receptor membrane.Recently HIDAKA and YOKOTA (1967) studied the effect of mercuric chloride on the fish chemoreceptors. It was found that the mercuric ion differentially affected the sugar receptor and the salt receptor in the palatal chemoreceptor system of the carp (Cyprinus carpio); the responses of the palatal receptors to certain sugars greatly decreased.

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“…Some heavy metals are known to have an suppressing effect on the taste receptors, including sugar receptors, of insects (DEONIER, 1938;DETHIER, 1955) and a frog (YUR'EVA, 1957) when they are applied externally to the surface of the receptor membrane.…”