Development of sensory organs in larvae of African catfish Clarias gariepinus

African catfish Clarias gariepinus hatched with morphologically immature features; however,sensory organs developed rapidly with fish growth. Although the eyes of newly hatched larvae were immature without pigment, in 2 day-old larvae, the retina of the eyes had already developed except for the ro...

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Main Authors:	Mukai, Yukinori, Tuzan, Audrey Daning, Lim, Leong Seng, Wahid, Nordin, Muhamad Shaleh, Sitti Raehanah, Senoo, Shigeharu
Format:	Article
Language:	English
Published:	Wiley-Blackwell 2008
Subjects:	QL Zoology QP Physiology
Online Access:	http://irep.iium.edu.my/7715/ http://irep.iium.edu.my/7715/ http://irep.iium.edu.my/7715/ http://irep.iium.edu.my/7715/1/muikai_2008_JFB.pdf

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recordtype	eprints
spelling	iium-77152012-05-11T02:33:39Z http://irep.iium.edu.my/7715/ Development of sensory organs in larvae of African catfish Clarias gariepinus Mukai, Yukinori Tuzan, Audrey Daning Lim, Leong Seng Wahid, Nordin Muhamad Shaleh, Sitti Raehanah Senoo, Shigeharu QL Zoology QP Physiology African catfish Clarias gariepinus hatched with morphologically immature features; however,sensory organs developed rapidly with fish growth. Although the eyes of newly hatched larvae were immature without pigment, in 2 day-old larvae, the retina of the eyes had already developed except for the rod cells. No free neuromasts were observed in newly hatched larvae. In 1 day-old larvae, however, free neuromasts were observed on the head and trunk. Free neuromasts increased with larval growth. Newly hatched larvae had simple round-shaped otic vesicles; however, all sensory epithelia of the inner ear were observed until the larvae were 3 days old. Two day-old larvae swam horizontally, had sharp teeth, commenced ingesting rotifers and also artificial feed (small-size pellets) under both light and dark conditions; by then the larvae already had many taste buds. Three day-old larvae showed negative phototaxis and cannibalism by eating their conspecifics. Most of the free neuromasts observed in this study had the peculiar feature of many microvilli around the sensory cells on the apical surface. Detected free neuromasts as ordinary type lateral-line organs were not observed in previous reports in teleosts. In 10 day-old larvae, there were two lines of free neuromasts on the flank and lower edge of the trunk; presumptive canal neuromasts were oval shaped and had begun to sink under the skin. The direction of maximum sensitivity of the neuromasts was parallel with the longitudinal axis of their elliptical apical surface. Wiley-Blackwell 2008-11 Article PeerReviewed application/pdf en http://irep.iium.edu.my/7715/1/muikai_2008_JFB.pdf Mukai, Yukinori and Tuzan, Audrey Daning and Lim, Leong Seng and Wahid, Nordin and Muhamad Shaleh, Sitti Raehanah and Senoo, Shigeharu (2008) Development of sensory organs in larvae of African catfish Clarias gariepinus. Journal of Fish Biology, 73 (7). pp. 1648-1661. ISSN 0022-1112 (P), 1095-8649 (O) http://onlinelibrary.wiley.com/doi/10.1111/j.1095-8649.2008.02038.x/abstract 10.1111/j.1095-8649.2008.02038.x
repository_type	Digital Repository
institution_category	Local University
institution	International Islamic University Malaysia
building	IIUM Repository
collection	Online Access
language	English
topic	QL Zoology QP Physiology
spellingShingle	QL Zoology QP Physiology Mukai, Yukinori Tuzan, Audrey Daning Lim, Leong Seng Wahid, Nordin Muhamad Shaleh, Sitti Raehanah Senoo, Shigeharu Development of sensory organs in larvae of African catfish Clarias gariepinus
description	African catfish Clarias gariepinus hatched with morphologically immature features; however,sensory organs developed rapidly with fish growth. Although the eyes of newly hatched larvae were immature without pigment, in 2 day-old larvae, the retina of the eyes had already developed except for the rod cells. No free neuromasts were observed in newly hatched larvae. In 1 day-old larvae, however, free neuromasts were observed on the head and trunk. Free neuromasts increased with larval growth. Newly hatched larvae had simple round-shaped otic vesicles; however, all sensory epithelia of the inner ear were observed until the larvae were 3 days old. Two day-old larvae swam horizontally, had sharp teeth, commenced ingesting rotifers and also artificial feed (small-size pellets) under both light and dark conditions; by then the larvae already had many taste buds. Three day-old larvae showed negative phototaxis and cannibalism by eating their conspecifics. Most of the free neuromasts observed in this study had the peculiar feature of many microvilli around the sensory cells on the apical surface. Detected free neuromasts as ordinary type lateral-line organs were not observed in previous reports in teleosts. In 10 day-old larvae, there were two lines of free neuromasts on the flank and lower edge of the trunk; presumptive canal neuromasts were oval shaped and had begun to sink under the skin. The direction of maximum sensitivity of the neuromasts was parallel with the longitudinal axis of their elliptical apical surface.
format	Article
author	Mukai, Yukinori Tuzan, Audrey Daning Lim, Leong Seng Wahid, Nordin Muhamad Shaleh, Sitti Raehanah Senoo, Shigeharu
author_facet	Mukai, Yukinori Tuzan, Audrey Daning Lim, Leong Seng Wahid, Nordin Muhamad Shaleh, Sitti Raehanah Senoo, Shigeharu
author_sort	Mukai, Yukinori
title	Development of sensory organs in larvae of African catfish Clarias gariepinus
title_short	Development of sensory organs in larvae of African catfish Clarias gariepinus
title_full	Development of sensory organs in larvae of African catfish Clarias gariepinus
title_fullStr	Development of sensory organs in larvae of African catfish Clarias gariepinus
title_full_unstemmed	Development of sensory organs in larvae of African catfish Clarias gariepinus
title_sort	development of sensory organs in larvae of african catfish clarias gariepinus
publisher	Wiley-Blackwell
publishDate	2008
url	http://irep.iium.edu.my/7715/ http://irep.iium.edu.my/7715/ http://irep.iium.edu.my/7715/ http://irep.iium.edu.my/7715/1/muikai_2008_JFB.pdf
first_indexed	2023-09-18T20:17:14Z
last_indexed	2023-09-18T20:17:14Z
_version_	1777407868774907904

Development of sensory organs in larvae of African catfish Clarias gariepinus

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