Sensory processing of ambient CO2 information in the brain of the moth Manduca sexta.

摘要: Insects use information about CO2 to perform vital tasks such as locating food sources. In certain moths, is involved in oviposition behavior. The labial palps of adult moths that feed adults have a pit organ containing sensory receptor cells project into the antennal lobes, sites primary processing olfactory brain. moth Manduca sexta and other species Lepidoptera, these labial-palp been shown be tuned CO2, their axons single, identified glomerulus lobe, glomerulus. At present, however, nothing known function this or how processed centrally. We used intracellular recording staining reveal projection (output) neurons lobes respond innervate Our results demonstrate site first-order ambient CO2. found three functional types CO2-responsive (with cell bodies lobe protocerebrum) provide output from higher centers Some physiological characteristics those are described.