Ciliary and rhabdomeric photoreceptor-cell circuits form a spectral depth gauge in marine zooplankton
Ciliary and rhabdomeric photoreceptor cells represent two main lines of photoreceptor-cell evolution in animals. The two cell types coexist in some animals, however how these cells functionally integrate is unknown. We used connectomics to map synaptic paths between ciliary and rhabdomeric photorece...
| Main Authors: | , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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eLife Sciences Publications Ltd
2018-05-01
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| Series: | eLife |
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| Online Access: | https://elifesciences.org/articles/36440 |
| _version_ | 1818019521209827328 |
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| author | Csaba Verasztó Martin Gühmann Huiyong Jia Vinoth Babu Veedin Rajan Luis A Bezares-Calderón Cristina Piñeiro-Lopez Nadine Randel Réza Shahidi Nico K Michiels Shozo Yokoyama Kristin Tessmar-Raible Gáspár Jékely |
| author_facet | Csaba Verasztó Martin Gühmann Huiyong Jia Vinoth Babu Veedin Rajan Luis A Bezares-Calderón Cristina Piñeiro-Lopez Nadine Randel Réza Shahidi Nico K Michiels Shozo Yokoyama Kristin Tessmar-Raible Gáspár Jékely |
| author_sort | Csaba Verasztó |
| collection | DOAJ |
| description | Ciliary and rhabdomeric photoreceptor cells represent two main lines of photoreceptor-cell evolution in animals. The two cell types coexist in some animals, however how these cells functionally integrate is unknown. We used connectomics to map synaptic paths between ciliary and rhabdomeric photoreceptors in the planktonic larva of the annelid Platynereis and found that ciliary photoreceptors are presynaptic to the rhabdomeric circuit. The behaviors mediated by the ciliary and rhabdomeric cells also interact hierarchically. The ciliary photoreceptors are UV-sensitive and mediate downward swimming in non-directional UV light, a behavior absent in ciliary-opsin knockout larvae. UV avoidance overrides positive phototaxis mediated by the rhabdomeric eyes such that vertical swimming direction is determined by the ratio of blue/UV light. Since this ratio increases with depth, Platynereis larvae may use it as a depth gauge during vertical migration. Our results revealed a functional integration of ciliary and rhabdomeric photoreceptor cells in a zooplankton larva. |
| first_indexed | 2024-04-14T07:53:22Z |
| format | Article |
| id | doaj.art-03c3819587c24ac4bd2aeb68846241f3 |
| institution | Directory Open Access Journal |
| issn | 2050-084X |
| language | English |
| last_indexed | 2024-04-14T07:53:22Z |
| publishDate | 2018-05-01 |
| publisher | eLife Sciences Publications Ltd |
| record_format | Article |
| series | eLife |
| spelling | doaj.art-03c3819587c24ac4bd2aeb68846241f32022-12-22T02:05:07ZengeLife Sciences Publications LtdeLife2050-084X2018-05-01710.7554/eLife.36440Ciliary and rhabdomeric photoreceptor-cell circuits form a spectral depth gauge in marine zooplanktonCsaba Verasztó0https://orcid.org/0000-0001-6295-7148Martin Gühmann1https://orcid.org/0000-0002-4330-0754Huiyong Jia2Vinoth Babu Veedin Rajan3https://orcid.org/0000-0002-2430-7395Luis A Bezares-Calderón4Cristina Piñeiro-Lopez5Nadine Randel6https://orcid.org/0000-0002-7817-4137Réza Shahidi7Nico K Michiels8Shozo Yokoyama9Kristin Tessmar-Raible10Gáspár Jékely11https://orcid.org/0000-0001-8496-9836Max Planck Institute for Developmental Biology, Tübingen, Germany; Living Systems Institute, University of Exeter, Exeter, United KingdomMax Planck Institute for Developmental Biology, Tübingen, GermanyDepartment of Biology, Emory University, Atlanta, United StatesMax F. Perutz Laboratories, University of Vienna, Vienna, AustriaMax Planck Institute for Developmental Biology, Tübingen, Germany; Living Systems Institute, University of Exeter, Exeter, United KingdomMax Planck Institute for Developmental Biology, Tübingen, GermanyMax Planck Institute for Developmental Biology, Tübingen, GermanyMax Planck Institute for Developmental Biology, Tübingen, Germany; Living Systems Institute, University of Exeter, Exeter, United KingdomDepartment of Biology, University of Tübingen, Tübingen, GermanyDepartment of Biology, Emory University, Atlanta, United StatesMax F. Perutz Laboratories, University of Vienna, Vienna, AustriaMax Planck Institute for Developmental Biology, Tübingen, Germany; Living Systems Institute, University of Exeter, Exeter, United KingdomCiliary and rhabdomeric photoreceptor cells represent two main lines of photoreceptor-cell evolution in animals. The two cell types coexist in some animals, however how these cells functionally integrate is unknown. We used connectomics to map synaptic paths between ciliary and rhabdomeric photoreceptors in the planktonic larva of the annelid Platynereis and found that ciliary photoreceptors are presynaptic to the rhabdomeric circuit. The behaviors mediated by the ciliary and rhabdomeric cells also interact hierarchically. The ciliary photoreceptors are UV-sensitive and mediate downward swimming in non-directional UV light, a behavior absent in ciliary-opsin knockout larvae. UV avoidance overrides positive phototaxis mediated by the rhabdomeric eyes such that vertical swimming direction is determined by the ratio of blue/UV light. Since this ratio increases with depth, Platynereis larvae may use it as a depth gauge during vertical migration. Our results revealed a functional integration of ciliary and rhabdomeric photoreceptor cells in a zooplankton larva.https://elifesciences.org/articles/36440opsinciliary photoreceptorrhabdomeric photoreceptorzooplanktonUV avoidancephototaxis |
| spellingShingle | Csaba Verasztó Martin Gühmann Huiyong Jia Vinoth Babu Veedin Rajan Luis A Bezares-Calderón Cristina Piñeiro-Lopez Nadine Randel Réza Shahidi Nico K Michiels Shozo Yokoyama Kristin Tessmar-Raible Gáspár Jékely Ciliary and rhabdomeric photoreceptor-cell circuits form a spectral depth gauge in marine zooplankton eLife opsin ciliary photoreceptor rhabdomeric photoreceptor zooplankton UV avoidance phototaxis |
| title | Ciliary and rhabdomeric photoreceptor-cell circuits form a spectral depth gauge in marine zooplankton |
| title_full | Ciliary and rhabdomeric photoreceptor-cell circuits form a spectral depth gauge in marine zooplankton |
| title_fullStr | Ciliary and rhabdomeric photoreceptor-cell circuits form a spectral depth gauge in marine zooplankton |
| title_full_unstemmed | Ciliary and rhabdomeric photoreceptor-cell circuits form a spectral depth gauge in marine zooplankton |
| title_short | Ciliary and rhabdomeric photoreceptor-cell circuits form a spectral depth gauge in marine zooplankton |
| title_sort | ciliary and rhabdomeric photoreceptor cell circuits form a spectral depth gauge in marine zooplankton |
| topic | opsin ciliary photoreceptor rhabdomeric photoreceptor zooplankton UV avoidance phototaxis |
| url | https://elifesciences.org/articles/36440 |
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