ArticleJournal of comparative physiology. A, Neuroethology, sensory, neural, and behavioral physiology2014
Photo-tropotaxis based on projection through the cerebral commissure in the terrestrial slug Limax.
Article in Journal of comparative physiology. A, Neuroethology, sensory, neural, and behavioral physiology, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed.
- Updating an allocentric goal from lateralised egocentric visual memories.Nature communications · 2026Article
- Article
- State-dependent, visually guided behaviors in the nudibranch Berghia stephanieae.The Journal of experimental biology · 2023Article
- Integration of ocular and non-ocular photosensory information in the brain of the terrestrial slug Limax.Journal of comparative physiology. A, Neuroethology, sensory, neural, and behavioral physiology · 2020Article
- Article
- Report on the 13th symposium on invertebrate neurobiology held 26-30 August 2015 at the Balaton Limnological Institute, MTA Centre for ecological research of the Hungarian Academy of Sciences, Tihany, Hungary.Invertebrate neuroscience : IN · 2016Article
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Authors and funding
3 authors.
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Abstract
In the terrestrial slug, Limax, eyes are located at the tip of the superior tentacles. This animal has long been believed to show negative phototaxis through tropotaxis, i.e., it compares the two light intensities detected by bilateral eyes to move away from a light source. As one of the possible manifestations of such negative phototaxis, a circling movement has been observed: if one of the superior tentacles is removed, the slugs continuously move in the direction of the removed side. However, there has been no evidence demonstrating that this behavior is actually based on negative phototropotaxis. In this study, we showed that the slugs do not exhibit the circling behavior in the absence of light, and that amputation of the cerebral commissure also diminishes the circling behavior under light. We could detect light-evoked responses during electrical recording from the cut edge of the cerebral commissure. Labeling of the optic nerve with neurobiotin also revealed the presence of the commissural fibers that potentially transmit the light information to the contralateral cerebral ganglion. Our study suggests that the slug's circling behavior is based on phototropotaxis in which the light intensities detected by the bilateral eyes are compared through the cerebral commissure.
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