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Do you see what I see? Optical morphology and visual capability of ‘disco’ clams (Ctenoides ales)
The ‘disco’ clam Ctenoides ales (Finlay, 1927) is a marine bivalve that has a unique, vivid flashing display that is a result of light scattering by silica nanospheres and rapid mantle movement. The eyes of C. ales were examined to determine their visual capabilities and whether the clams can see th...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
The Company of Biologists Ltd
2017
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5450326/ https://www.ncbi.nlm.nih.gov/pubmed/28396488 http://dx.doi.org/10.1242/bio.024570 |
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author | Dougherty, Lindsey F. Dubielzig, Richard R. Schobert, Charles S. Teixeira, Leandro B. Li, Jingchun |
author_facet | Dougherty, Lindsey F. Dubielzig, Richard R. Schobert, Charles S. Teixeira, Leandro B. Li, Jingchun |
author_sort | Dougherty, Lindsey F. |
collection | PubMed |
description | The ‘disco’ clam Ctenoides ales (Finlay, 1927) is a marine bivalve that has a unique, vivid flashing display that is a result of light scattering by silica nanospheres and rapid mantle movement. The eyes of C. ales were examined to determine their visual capabilities and whether the clams can see the flashing of conspecifics. Similar to the congener C. scaber, C. ales exhibits an off-response (shadow reflex) and an on-response (light reflex). In field observations, a shadow caused a significant increase in flash rate from a mean of 3.9 Hz to 4.7 Hz (P=0.0016). In laboratory trials, a looming stimulus, which increased light intensity, caused a significant increase in flash rate from a median of 1.8 Hz to 2.2 Hz (P=0.0001). Morphological analysis of the eyes of C. ales revealed coarsely-packed photoreceptors lacking sophisticated structure, resulting in visual resolution that is likely too low to detect the flashing of conspecifics. As the eyes of C. ales are incapable of perceiving conspecific flashing, it is likely that their vision is instead used to detect predators. |
format | Online Article Text |
id | pubmed-5450326 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | The Company of Biologists Ltd |
record_format | MEDLINE/PubMed |
spelling | pubmed-54503262017-06-01 Do you see what I see? Optical morphology and visual capability of ‘disco’ clams (Ctenoides ales) Dougherty, Lindsey F. Dubielzig, Richard R. Schobert, Charles S. Teixeira, Leandro B. Li, Jingchun Biol Open Research Article The ‘disco’ clam Ctenoides ales (Finlay, 1927) is a marine bivalve that has a unique, vivid flashing display that is a result of light scattering by silica nanospheres and rapid mantle movement. The eyes of C. ales were examined to determine their visual capabilities and whether the clams can see the flashing of conspecifics. Similar to the congener C. scaber, C. ales exhibits an off-response (shadow reflex) and an on-response (light reflex). In field observations, a shadow caused a significant increase in flash rate from a mean of 3.9 Hz to 4.7 Hz (P=0.0016). In laboratory trials, a looming stimulus, which increased light intensity, caused a significant increase in flash rate from a median of 1.8 Hz to 2.2 Hz (P=0.0001). Morphological analysis of the eyes of C. ales revealed coarsely-packed photoreceptors lacking sophisticated structure, resulting in visual resolution that is likely too low to detect the flashing of conspecifics. As the eyes of C. ales are incapable of perceiving conspecific flashing, it is likely that their vision is instead used to detect predators. The Company of Biologists Ltd 2017-04-10 /pmc/articles/PMC5450326/ /pubmed/28396488 http://dx.doi.org/10.1242/bio.024570 Text en © 2017. Published by The Company of Biologists Ltd http://creativecommons.org/licenses/by/3.0This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution and reproduction in any medium provided that the original work is properly attributed. |
spellingShingle | Research Article Dougherty, Lindsey F. Dubielzig, Richard R. Schobert, Charles S. Teixeira, Leandro B. Li, Jingchun Do you see what I see? Optical morphology and visual capability of ‘disco’ clams (Ctenoides ales) |
title | Do you see what I see? Optical morphology and visual capability of ‘disco’ clams (Ctenoides ales) |
title_full | Do you see what I see? Optical morphology and visual capability of ‘disco’ clams (Ctenoides ales) |
title_fullStr | Do you see what I see? Optical morphology and visual capability of ‘disco’ clams (Ctenoides ales) |
title_full_unstemmed | Do you see what I see? Optical morphology and visual capability of ‘disco’ clams (Ctenoides ales) |
title_short | Do you see what I see? Optical morphology and visual capability of ‘disco’ clams (Ctenoides ales) |
title_sort | do you see what i see? optical morphology and visual capability of ‘disco’ clams (ctenoides ales) |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5450326/ https://www.ncbi.nlm.nih.gov/pubmed/28396488 http://dx.doi.org/10.1242/bio.024570 |
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