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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Main Authors:	Mukai, Yukinori, Leong, Seng Lim, Saad, Shahbudin
Format:	Article
Language:	English
Published:	Academic Journals 2012
Subjects:	SH Aquaculture. Fisheries. Angling
Online Access:	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

id	iium-27387
recordtype	eprints
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
repository_type	Digital Repository
institution_category	Local University
institution	International Islamic University Malaysia
building	IIUM Repository
collection	Online Access
language	English
topic	SH Aquaculture. Fisheries. Angling
spellingShingle	SH Aquaculture. Fisheries. Angling Mukai, Yukinori Leong, Seng Lim Saad, Shahbudin Retinomotor response in the larvae of brown-marbled grouper, Epinephelus fuscoguttatus
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.
format	Article
author	Mukai, Yukinori Leong, Seng Lim Saad, Shahbudin
author_facet	Mukai, Yukinori Leong, Seng Lim Saad, Shahbudin
author_sort	Mukai, Yukinori
title	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_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_sort	retinomotor response in the larvae of brown-marbled grouper, epinephelus fuscoguttatus
publisher	Academic Journals
publishDate	2012
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
first_indexed	2023-09-18T20:40:42Z
last_indexed	2023-09-18T20:40:42Z
_version_	1777409345008435200

Retinomotor response in the larvae of brown-marbled grouper, Epinephelus fuscoguttatus

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