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Contact: Dr. Coby Schal
North Carolina State University

Roach Rejects Glucose

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Caption: The cockroach was deprived of food and water for 24 hrs, and screened. Before the assay the antennae, maxillary palps and labial palps were ablated, leaving the paraglossae intact, and then the paraglossae-mediated feeding response was obtained. The cockroach is offered a dyed stimulus solution containing D-glucose, and ingestion is also monitored through the clypeus and frons, the translucent front-middle area of the head capsule. The cockroach rejects D-glucose.

Credit: Coby Schal, Ayako Wada-Katsumata

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