Stability of Grain as a Factor influencing the Oviposition Rate of the Grain Weevil, Calandra granaria (L.) (Col., Curculionidae)

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Abstract
In order to estimate the effect of cracks in floors upon the oviposition rate of Calandra granaria (L.) in an unstocked granary, grain was presented to adults in six ways. The grain was either fixed or loose. Fixation was achieved either by placing grain in cracks in wood or plaster of Paris, or by gumming (in rows or scattered) to glass. The loose grains lay upon glass or plaster of Paris.A significantly greater number of eggs was laid upon grain that was fixed. The fact that the grains were in rows and partially enclosed when in cracks had no greater effect than fixing with gum. There was no significant departure from a random distribution of eggs in grains when the latter were in cracks.
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