Abstract
An investigation of the effect of time and temperature on digestion using a single radial immunoassay (SRI) was undertaken. The big-eyed bug, Geocoris punctipes (Say), was used as the model insect. The insects were allowed to feed 1 h on an antigen-spiked artificial diet, then held at various time and temperature regimes. Rabbit anti-IgG was incorporated into an agarose medium for the SRI assay. The assay was sufficiently sensitive to detect rabbit IgG in insect gut extracts for at least 48 h when held at 27°C and for at least 24 h when held at 40°C.