Modular subdivision of mushroom bodies by Kenyon cells in the silkmoth

The Journal of Comparative Neurology
Ryota Fukushima, Ryohei Kanzaki

Abstract

In insects, olfactory information in the glomeruli of the antennal lobe, the first olfactory center, is transmitted to the lateral protocerebrum and the calyx of the mushroom body via projection neurons. In male silkmoths (Bombyx mori), arborization patterns in the calyx differ markedly between projection neurons that respond to sex pheromones and those that respond to general odors. However, little is known about the organization of the mushroom body's intrinsic neurons, called Kenyon cells (KCs), which receive the inputs from the projection neurons. We investigated the silkmoth mushroom body and identified four parallel subdivisions in the lobes and pedunculus by immunolabeling with antibodies against the catalytic subunit of protein kinase A in Drosophila melanogaster (DC0) and the neuromodulatory peptide FMRFamide. To further understand the detailed organization of the mushroom body, we performed extensive labeling of individual KCs. We identified four morphological types whose axonal projections corresponded to the subdivisions in the lobes, and found that each type of KC had a characteristic dendritic morphology in the calyx. These results show a correlation between the axonal projections of KCs in the lobes and dendritic...Continue Reading

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Citations

Jun 12, 2013·Journal of Comparative Physiology. A, Neuroethology, Sensory, Neural, and Behavioral Physiology·Ryohei KanzakiNoriyasu Ando
Sep 18, 2012·Neuroscience Letters·Masashi TabuchiKei Nakatani
Mar 10, 2012·Arthropod Structure & Development·Carsten M HeuerJoachim Schachtner
Oct 4, 2011·Progress in Neurobiology·Joshua P MartinJohn G Hildebrand
Sep 5, 2009·The Journal of Comparative Neurology·Basil El JundiJoachim Schachtner
Aug 23, 2012·The Journal of Comparative Neurology·Shigehiro NamikiRyohei Kanzaki
Feb 26, 2013·The Journal of Comparative Neurology·Daniel KuehJohn Jellies
Sep 12, 2014·The Journal of Comparative Neurology·Michiyo KinoshitaUwe Homberg
Nov 18, 2014·The Journal of Comparative Neurology·Stephen H Montgomery, Swidbert R Ott

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