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The anatomical pathways for antennal sensory information in the central nervous system of the cricket, Gryllus bimaculatus

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Title: The anatomical pathways for antennal sensory information in the central nervous system of the cricket, Gryllus bimaculatus
Authors: Yoritsune, Atsushi Browse this author
Aonuma, Hitoshi Browse this author →KAKEN DB
Keywords: Insect
Antennal lobe
Dorsal lobe
Projection neuron
Issue Date: Dec-2012
Publisher: Springer
Journal Title: Invertebrate Neuroscience
Volume: 12
Issue: 2
Start Page: 103
End Page: 117
Publisher DOI: 10.1007/s10158-012-0137-6
PMID: 22669572
Abstract: Antennae are one of the major organs to detect chemo- and mechanosensory cue in crickets. Little is known how crickets process and integrate different modality of information in the brain. We thus used a number of different anatomical techniques to gain an understanding of the neural pathways extending from the antennal sensory neurons up to centers in the brain. We identified seven antennal sensory tracts (assigned as T1–7) utilizing anterograde dye filling from the antennal nerve. Tracts T1–T4 project into the antennal lobe (AL), while tracts T5 and T6 course into the dorsal region of the deutocerebrum or the suboesophageal ganglion, and finally, tract T7 terminates in the ventral area of flagellar afferent (VFA). By analyzing autofluorescence images of the AL, we identified 49 sexually isomorphic glomeruli on the basis of shape, relative position and size. On the basis of our sensory-tract data, we assigned the glomeruli into one of four separate groups. We then three-dimensionally reconstructed the internal structures in the AL (glomeruli) and the VFA (layers). Next in the protocerebrum, we identified both the tracts and their terminations from the AL and VFA. We found that 10 tracts originate in the AL, whereas there are at least eight tracts from the VFA. Several tracts from the AL share their routes with those from the VFA, but their termination areas are segregated. We now have a better anatomical understanding of the pathways for the antennal information in cricket.
Rights: The original publication is available at
Type: article (author version)
Appears in Collections:電子科学研究所 (Research Institute for Electronic Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 青沼 仁志

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