Cargando…

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...

Descripción completa

Detalles Bibliográficos
Autores principales: Verasztó, Csaba, Gühmann, Martin, Jia, Huiyong, Rajan, Vinoth Babu Veedin, Bezares-Calderón, Luis A, Piñeiro-Lopez, Cristina, Randel, Nadine, Shahidi, Réza, Michiels, Nico K, Yokoyama, Shozo, Tessmar-Raible, Kristin, Jékely, Gáspár
Formato: Online Artículo Texto
Lenguaje:English
Publicado: eLife Sciences Publications, Ltd 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6019069/
https://www.ncbi.nlm.nih.gov/pubmed/29809157
http://dx.doi.org/10.7554/eLife.36440
_version_ 1783335069971120128
author Verasztó, Csaba
Gühmann, Martin
Jia, Huiyong
Rajan, Vinoth Babu Veedin
Bezares-Calderón, Luis A
Piñeiro-Lopez, Cristina
Randel, Nadine
Shahidi, Réza
Michiels, Nico K
Yokoyama, Shozo
Tessmar-Raible, Kristin
Jékely, Gáspár
author_facet Verasztó, Csaba
Gühmann, Martin
Jia, Huiyong
Rajan, Vinoth Babu Veedin
Bezares-Calderón, Luis A
Piñeiro-Lopez, Cristina
Randel, Nadine
Shahidi, Réza
Michiels, Nico K
Yokoyama, Shozo
Tessmar-Raible, Kristin
Jékely, Gáspár
author_sort Verasztó, Csaba
collection PubMed
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.
format Online
Article
Text
id pubmed-6019069
institution National Center for Biotechnology Information
language English
publishDate 2018
publisher eLife Sciences Publications, Ltd
record_format MEDLINE/PubMed
spelling pubmed-60190692018-07-05 Ciliary and rhabdomeric photoreceptor-cell circuits form a spectral depth gauge in marine zooplankton Verasztó, Csaba Gühmann, Martin Jia, Huiyong Rajan, Vinoth Babu Veedin Bezares-Calderón, Luis A Piñeiro-Lopez, Cristina Randel, Nadine Shahidi, Réza Michiels, Nico K Yokoyama, Shozo Tessmar-Raible, Kristin Jékely, Gáspár eLife Neuroscience 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. eLife Sciences Publications, Ltd 2018-05-29 /pmc/articles/PMC6019069/ /pubmed/29809157 http://dx.doi.org/10.7554/eLife.36440 Text en © 2018, Verasztó et al http://creativecommons.org/licenses/by/4.0/ http://creativecommons.org/licenses/by/4.0/This article is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use and redistribution provided that the original author and source are credited.
spellingShingle Neuroscience
Verasztó, Csaba
Gühmann, Martin
Jia, Huiyong
Rajan, Vinoth Babu Veedin
Bezares-Calderón, Luis A
Piñeiro-Lopez, Cristina
Randel, Nadine
Shahidi, Réza
Michiels, Nico K
Yokoyama, Shozo
Tessmar-Raible, Kristin
Jékely, Gáspár
Ciliary and rhabdomeric photoreceptor-cell circuits form a spectral depth gauge in marine zooplankton
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 Neuroscience
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6019069/
https://www.ncbi.nlm.nih.gov/pubmed/29809157
http://dx.doi.org/10.7554/eLife.36440
work_keys_str_mv AT verasztocsaba ciliaryandrhabdomericphotoreceptorcellcircuitsformaspectraldepthgaugeinmarinezooplankton
AT guhmannmartin ciliaryandrhabdomericphotoreceptorcellcircuitsformaspectraldepthgaugeinmarinezooplankton
AT jiahuiyong ciliaryandrhabdomericphotoreceptorcellcircuitsformaspectraldepthgaugeinmarinezooplankton
AT rajanvinothbabuveedin ciliaryandrhabdomericphotoreceptorcellcircuitsformaspectraldepthgaugeinmarinezooplankton
AT bezarescalderonluisa ciliaryandrhabdomericphotoreceptorcellcircuitsformaspectraldepthgaugeinmarinezooplankton
AT pineirolopezcristina ciliaryandrhabdomericphotoreceptorcellcircuitsformaspectraldepthgaugeinmarinezooplankton
AT randelnadine ciliaryandrhabdomericphotoreceptorcellcircuitsformaspectraldepthgaugeinmarinezooplankton
AT shahidireza ciliaryandrhabdomericphotoreceptorcellcircuitsformaspectraldepthgaugeinmarinezooplankton
AT michielsnicok ciliaryandrhabdomericphotoreceptorcellcircuitsformaspectraldepthgaugeinmarinezooplankton
AT yokoyamashozo ciliaryandrhabdomericphotoreceptorcellcircuitsformaspectraldepthgaugeinmarinezooplankton
AT tessmarraiblekristin ciliaryandrhabdomericphotoreceptorcellcircuitsformaspectraldepthgaugeinmarinezooplankton
AT jekelygaspar ciliaryandrhabdomericphotoreceptorcellcircuitsformaspectraldepthgaugeinmarinezooplankton