Retinomotor response in the larvae of brown-marbled grouper, Epinephelus fuscoguttatus
This study examined the retinomotor responses of 14 28, and 42 d old brown-marbled grouper Epinephelus fuscoguttatus under seven orders of magnitude of light intensities from 0 lx to 100 lx to determine the visual thresholds. The retinomotor response was absent in 14 d old larvae, indicating the a...
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| Language: | English |
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Academic Journals
2012
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| Online Access: | http://irep.iium.edu.my/27387/ http://irep.iium.edu.my/27387/1/2012_JFAS.htm |
| _version_ | 1848779810270085120 |
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| author | Mukai, Yukinori Leong, Seng Lim Saad, Shahbudin |
| author_facet | Mukai, Yukinori Leong, Seng Lim Saad, Shahbudin |
| author_sort | Mukai, Yukinori |
| building | IIUM Repository |
| collection | Online Access |
| description | This study examined the retinomotor responses of 14 28, and 42 d old brown-marbled grouper Epinephelus fuscoguttatus under seven orders of magnitude of light intensities from 0 lx to 100 lx to determine the visual thresholds.
The retinomotor response was absent in 14 d old larvae, indicating the absence of the rod visual cells and a reliance on pure-cone retina for vision. The 27–28 d old larvae had rod cells in the retinae and showed weak retinomotor response—the retinal pigment layer was slightly thinner at light intensity <1 lx than at 10–100 lx. The retinae of 42–45 d old grouper showed a clear retinomotor response at 0.1 lx, becoming stronger at 1 lx and higher; 0.1 - 1 lx may be considered the threshold of visual sensitivity of E. fuscoguttatus.
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| first_indexed | 2025-11-14T15:23:41Z |
| format | Article |
| id | iium-27387 |
| institution | International Islamic University Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T15:23:41Z |
| publishDate | 2012 |
| publisher | Academic Journals |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | iium-273872013-12-18T03:24:49Z http://irep.iium.edu.my/27387/ Retinomotor response in the larvae of brown-marbled grouper, Epinephelus fuscoguttatus Mukai, Yukinori Leong, Seng Lim Saad, Shahbudin SH Aquaculture. Fisheries. Angling This study examined the retinomotor responses of 14 28, and 42 d old brown-marbled grouper Epinephelus fuscoguttatus under seven orders of magnitude of light intensities from 0 lx to 100 lx to determine the visual thresholds. The retinomotor response was absent in 14 d old larvae, indicating the absence of the rod visual cells and a reliance on pure-cone retina for vision. The 27–28 d old larvae had rod cells in the retinae and showed weak retinomotor response—the retinal pigment layer was slightly thinner at light intensity <1 lx than at 10–100 lx. The retinae of 42–45 d old grouper showed a clear retinomotor response at 0.1 lx, becoming stronger at 1 lx and higher; 0.1 - 1 lx may be considered the threshold of visual sensitivity of E. fuscoguttatus. Academic Journals 2012 Article PeerReviewed application/pdf en http://irep.iium.edu.my/27387/1/2012_JFAS.htm Mukai, Yukinori and Leong, Seng Lim and Saad, Shahbudin (2012) Retinomotor response in the larvae of brown-marbled grouper, Epinephelus fuscoguttatus. Journal of Fisheries and Aquatic Science, 7 (3). pp. 233-239. ISSN 1816-4927 http://scialert.net/qredirect.php?doi=jfas.2012.233.239&linkid=pdf 10.9823/jfas.2012.233.239 |
| spellingShingle | SH Aquaculture. Fisheries. Angling Mukai, Yukinori Leong, Seng Lim Saad, Shahbudin Retinomotor response in the larvae of brown-marbled grouper, Epinephelus fuscoguttatus |
| title | Retinomotor response in the larvae of brown-marbled grouper, Epinephelus fuscoguttatus |
| title_full | Retinomotor response in the larvae of brown-marbled grouper, Epinephelus fuscoguttatus |
| title_fullStr | Retinomotor response in the larvae of brown-marbled grouper, Epinephelus fuscoguttatus |
| title_full_unstemmed | Retinomotor response in the larvae of brown-marbled grouper, Epinephelus fuscoguttatus |
| title_short | Retinomotor response in the larvae of brown-marbled grouper, Epinephelus fuscoguttatus |
| title_sort | retinomotor response in the larvae of brown-marbled grouper, epinephelus fuscoguttatus |
| topic | SH Aquaculture. Fisheries. Angling |
| url | http://irep.iium.edu.my/27387/ http://irep.iium.edu.my/27387/ http://irep.iium.edu.my/27387/ http://irep.iium.edu.my/27387/1/2012_JFAS.htm |