Development of sensory organs and changes of behavior in larvae of the sutchi catfish, Pangasianodon hypophthalmus

Abstract Larvae of the sutchi catfish Pangasianodon hypophthalmus hatch with morphologically immature features, but sensory organs develop rapidly as the fish grow. By 1 day old, yolk-sac larvae showed notochord flexion, and by 2 days old larvae were observed to have consumed a large part of th...

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Main Authors: Mukai, Yukinori, Tuzan, Audrey Daning, Muhamad Shaleh, Sitti Raehanah, Manjaji-Matsumoto, Bernardette Mabel
Format: Article
Language:English
Published: Springer Tokyo 2010
Subjects:
Online Access:http://irep.iium.edu.my/2093/
http://irep.iium.edu.my/2093/
http://irep.iium.edu.my/2093/
http://irep.iium.edu.my/2093/1/2010_fisheries_science_sensory_organs.pdf
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spelling iium-20932011-11-09T05:05:43Z http://irep.iium.edu.my/2093/ Development of sensory organs and changes of behavior in larvae of the sutchi catfish, Pangasianodon hypophthalmus Mukai, Yukinori Tuzan, Audrey Daning Muhamad Shaleh, Sitti Raehanah Manjaji-Matsumoto, Bernardette Mabel QL Zoology SH Aquaculture. Fisheries. Angling Abstract Larvae of the sutchi catfish Pangasianodon hypophthalmus hatch with morphologically immature features, but sensory organs develop rapidly as the fish grow. By 1 day old, yolk-sac larvae showed notochord flexion, and by 2 days old larvae were observed to have consumed a large part of the yolk sac. At this stage, larvae had welldeveloped eyes, olfactory organs with ciliated receptor cells, inner ears with semicircular canals, and numerous taste buds, and they commenced ingestion of rotifers, Artemia nauplii, and artificial compound feed. Two-dayold larvae had many free neuromasts on the surface of the head and flanks and clearly showed rheotaxis. By 20 days old, free neuromasts in postflexion larvae had sunk under the skin. At this later stage, larvae swam against a water current and schooled along the side of the fish tank. Rapid development of sensory organs and notochord flexion would be an adaptation for survival in conditions of flowing water, as in the Mekong River. In this study, we show that development of the lateral line in the postflexion stage seems to be closely related to larval behavior, suggesting that these developments could be essential for sutchi catfish larvae survival. Springer Tokyo 2010 Article PeerReviewed application/pdf en http://irep.iium.edu.my/2093/1/2010_fisheries_science_sensory_organs.pdf Mukai, Yukinori and Tuzan, Audrey Daning and Muhamad Shaleh, Sitti Raehanah and Manjaji-Matsumoto, Bernardette Mabel (2010) Development of sensory organs and changes of behavior in larvae of the sutchi catfish, Pangasianodon hypophthalmus. Fisheries Science, 76 (6). pp. 921-930. ISSN 0919-9268 (P), 1444-2906 (O) http://www.springerlink.com/content/36l5602h1616x2k8/fulltext.pdf 10.1007/s12562-010-0290-y
repository_type Digital Repository
institution_category Local University
institution International Islamic University Malaysia
building IIUM Repository
collection Online Access
language English
topic QL Zoology
SH Aquaculture. Fisheries. Angling
spellingShingle QL Zoology
SH Aquaculture. Fisheries. Angling
Mukai, Yukinori
Tuzan, Audrey Daning
Muhamad Shaleh, Sitti Raehanah
Manjaji-Matsumoto, Bernardette Mabel
Development of sensory organs and changes of behavior in larvae of the sutchi catfish, Pangasianodon hypophthalmus
description Abstract Larvae of the sutchi catfish Pangasianodon hypophthalmus hatch with morphologically immature features, but sensory organs develop rapidly as the fish grow. By 1 day old, yolk-sac larvae showed notochord flexion, and by 2 days old larvae were observed to have consumed a large part of the yolk sac. At this stage, larvae had welldeveloped eyes, olfactory organs with ciliated receptor cells, inner ears with semicircular canals, and numerous taste buds, and they commenced ingestion of rotifers, Artemia nauplii, and artificial compound feed. Two-dayold larvae had many free neuromasts on the surface of the head and flanks and clearly showed rheotaxis. By 20 days old, free neuromasts in postflexion larvae had sunk under the skin. At this later stage, larvae swam against a water current and schooled along the side of the fish tank. Rapid development of sensory organs and notochord flexion would be an adaptation for survival in conditions of flowing water, as in the Mekong River. In this study, we show that development of the lateral line in the postflexion stage seems to be closely related to larval behavior, suggesting that these developments could be essential for sutchi catfish larvae survival.
format Article
author Mukai, Yukinori
Tuzan, Audrey Daning
Muhamad Shaleh, Sitti Raehanah
Manjaji-Matsumoto, Bernardette Mabel
author_facet Mukai, Yukinori
Tuzan, Audrey Daning
Muhamad Shaleh, Sitti Raehanah
Manjaji-Matsumoto, Bernardette Mabel
author_sort Mukai, Yukinori
title Development of sensory organs and changes of behavior in larvae of the sutchi catfish, Pangasianodon hypophthalmus
title_short Development of sensory organs and changes of behavior in larvae of the sutchi catfish, Pangasianodon hypophthalmus
title_full Development of sensory organs and changes of behavior in larvae of the sutchi catfish, Pangasianodon hypophthalmus
title_fullStr Development of sensory organs and changes of behavior in larvae of the sutchi catfish, Pangasianodon hypophthalmus
title_full_unstemmed Development of sensory organs and changes of behavior in larvae of the sutchi catfish, Pangasianodon hypophthalmus
title_sort development of sensory organs and changes of behavior in larvae of the sutchi catfish, pangasianodon hypophthalmus
publisher Springer Tokyo
publishDate 2010
url http://irep.iium.edu.my/2093/
http://irep.iium.edu.my/2093/
http://irep.iium.edu.my/2093/
http://irep.iium.edu.my/2093/1/2010_fisheries_science_sensory_organs.pdf
first_indexed 2023-09-18T20:09:37Z
last_indexed 2023-09-18T20:09:37Z
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