The central nervous system of whip spiders (Amblypygi): large mushroom bodies receive olfactory and visual input
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preprint Sinakevitch Long ...
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Final Accepted Manuscript
Affiliation
Univ Arizona, Dept NeurosciUniv Arizona, Evelyn F McKnight Brain Inst, Div Neural Syst Memory & Aging
Issue Date
2020-10
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WileyCitation
Sinakevitch I, Long SM, Gronenberg W. The central nervous system of whip spiders (Amblypygi): Large mushroom bodies receive olfactory and visual input. J Comp Neurol. 2020;1–17. https://doi.org/10. 1002/cne.25045 SINAKEVITCH ET AL. 17Rights
Copyright © 2020 Wiley Periodicals LLC.Collection Information
This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.Abstract
Whip spiders (Amblypygi) are known for their nocturnal navigational abilities, which rely on chemosensory and tactile cues and, to a lesser degree, on vision. Unlike true spiders, the first pair of legs in whip spiders is modified into extraordinarily long sensory organs (antenniform legs) covered with thousands of mechanosensory, olfactory and gustatory sensilla. Olfactory neurons send their axons through the leg nerve into the corresponding neuromere of the central nervous system, where they terminate on a particularly large number (about 460) of primary olfactory glomeruli, suggesting an advanced sense of smell. From the primary glomeruli, olfactory projection neurons ascend to the brain and terminate in the mushroom body calyx on a set of secondary olfactory glomeruli, a feature that is not known from olfactory pathways of other animals. Another part of the calyx receives visual input from the secondary visual neuropil (the medulla). This calyx region is composed of much smaller glomeruli (‘microglomeruli’). The bimodal input and the exceptional size of their mushroom bodies may support the navigational capabilities of whip spiders. In addition to input to the mushroom body, we describe other general anatomical features of the whip spiders’ central nervous system.Note
12 month embargo; first published: 25 September 2020ISSN
0021-9967PubMed ID
32978799Version
Final accepted manuscriptSponsors
National Science Foundation (USA), Grant/Award Number: DEB 1456221ae974a485f413a2113503eed53cd6c53
10.1002/cne.25045
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