Serotonin-immunoreactive neurons in the ventral nerve cord of the larva of the Eastern spruce budworm, Choristoneura fumiferana.
1. Using indirect immunofluorescent method, the distribution of serotonin immunoreactivity was examined in the ventral nerve cord of the larva of the Eastern spruce budworm, Choristoneura fumiferana. 2. There were two pairs of serially homologous serotonin immunoreactive neurons per ganglion. 3. The subesophageal ganglion which develops from the fusion of three neuromeres had accordingly, six pairs of immunoreactive neurons. 4. The neurons were positioned ventrolaterally at the posterior end of the ganglia and distributed in a bilaterally symmetrical fashion. 5. The axonal processes from serotonin-immunoreactive neurons projected to the contralateral side of the hemiganglion through a ventral commissure and formed an extensive network of fibers on the dorsal side of each ganglion.
Department of Biology, University of New Brunswick, Fredericton, Canada.
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Sivasubramanian
D000005:Abdomen / Q000294:innervation; D000818:Animals; D004947:Esophagus / Q000294:innervation; D005724:Ganglia / Q000737:chemistry; D007814:Larva / Q000737:chemistry; D007915:Lepidoptera / Q000737:chemistry; D009412:Nerve Fibers / Q000737:chemistry*; D009474:Neurons / Q000737:chemistry*; D012701:Serotonin / Q000032:analysis*; D013909:Thorax / Q000294:innervation
D012701:Serotonin