The brain of Cataglyphis ants: Neuronal organization and visual projections

Cataglyphis ants are known for their outstanding navigational abilities. They return to their inconspicuous nest after far‐reaching foraging trips using path integration, and whenever available, learn and memorize visual features of panoramic sceneries. To achieve this, the ants combine directional...

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Veröffentlicht in:Journal of comparative neurology (1911) 2020-12, Vol.528 (18), p.3479-3506
Hauptverfasser: Habenstein, Jens, Amini, Emad, Grübel, Kornelia, el Jundi, Basil, Rössler, Wolfgang
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container_issue 18
container_start_page 3479
container_title Journal of comparative neurology (1911)
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creator Habenstein, Jens
Amini, Emad
Grübel, Kornelia
el Jundi, Basil
Rössler, Wolfgang
description Cataglyphis ants are known for their outstanding navigational abilities. They return to their inconspicuous nest after far‐reaching foraging trips using path integration, and whenever available, learn and memorize visual features of panoramic sceneries. To achieve this, the ants combine directional visual information from celestial cues and panoramic scenes with distance information from an intrinsic odometer. The largely vision‐based navigation in Cataglyphis requires sophisticated neuronal networks to process the broad repertoire of visual stimuli. Although Cataglyphis ants have been subjected to many neuroethological studies, little is known about the general neuronal organization of their central brain and the visual pathways beyond major circuits. Here, we provide a comprehensive, three‐dimensional neuronal map of synapse‐rich neuropils in the brain of Cataglyphis nodus including major connecting fiber systems. In addition, we examined neuronal tracts underlying the processing of visual information in more detail. This study revealed a total of 33 brain neuropils and 30 neuronal fiber tracts including six distinct tracts between the optic lobes and the cerebrum. We also discuss the importance of comparative studies on insect brain architecture for a profound understanding of neuronal networks and their function. Three‐dimensional reconstruction of a Cataglyphis brain based on immunohistochemical staining and fluorescent tracing. We provide a detailed atlas of the Cataglyphis brain including 33 brain neuropils and 30 fiber tracts. We further focus on the description of the major optical tracts/commissures and their projections in the central brain.
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This study revealed a total of 33 brain neuropils and 30 neuronal fiber tracts including six distinct tracts between the optic lobes and the cerebrum. We also discuss the importance of comparative studies on insect brain architecture for a profound understanding of neuronal networks and their function. Three‐dimensional reconstruction of a Cataglyphis brain based on immunohistochemical staining and fluorescent tracing. We provide a detailed atlas of the Cataglyphis brain including 33 brain neuropils and 30 fiber tracts. 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subjects 3D reconstruction
Animal behavior
ant brain
antennal lobes
Brain architecture
Cataglyphis
central complex
Cerebrum
Information processing
insect
mushroom bodies
Navigation behavior
Neural networks
Neuroethology
optical tracts
Synapses
Visual pathways
Visual stimuli
title The brain of Cataglyphis ants: Neuronal organization and visual projections
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