Induction of body distension by operations on the nervous system in larvae of the swallowtall, Papilio xuthus |
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Authors: | Junko Yamashita Toshitaka Hidaka Shiro Kamioka |
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Affiliation: | 1. Laboratory of Silkworm Physiology Tokyo University of Agriculture and Technology, Fuchu, Tokyo, 183 Japan;2. Laboratory of Biology, Tokyo University of Agriculture and Technology, Fuchu, Tokyo, 183 Japan |
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Abstract: | Removal of the ganglion or severance of the nerve cords at the thorax in mature larvae of the swallowtail, Papilio xuthus, induced systemic distension of the body by swallowing excess air. Such a distension, however, was never induced by simultaneous extirpation of the brain, suboesophageal ganglion, or frontal ganglion, or by severance of the recurrent nerve. Removal of an abdominal ganglion induced distension of the posterior part of the body accompanied by shrinkage of the anterior part. The latter phenomenon appears to be induced by a different mechanism from that of systemic distension. |
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