Adult German Cockroach (Orthoptera: Blattellidae) Feeding and Drinking Behavior as a Function of Density and Harborage-to-resource Distance

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Abstract
There was an effect of harborage-to-resource distance but no main effect of density on the frequency of feeding and drinking activity of adult Blattella germanica , videotaped continuously for 96 h. Feeding and drinking diel periodicity was more pronounced when the resource was placed further from the harborage with activity peaking ca. 2 h into scotophase and declining at the onset of photophase. Nongravid females and males fed and drank more often than gravid females, with a high percentage of females carrying oothecae never feeding or drinking during the recording period.