Feeding behavior under dark conditions in larvae of sutchi catfish Pangasianodon hypophthalmus

Sutchi catfish Pangasianodon hypophthalmus hatch with morphologically immature sensory organs; however, sensory organs develop rapidly with larval growth. Two-day-old larvae commenced ingesting Artemia nauplii. The larvae displayed many taste buds on the barbels, the head surface, and in the buccal...

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Main Authors: Mukai, Yukinori, Tuzan, Audrey Daning, Leong, Seng Lim, Yahaya, Syahirah
Format: Article
Language:English
Published: Springer Tokyo 2010
Subjects:
Online Access:http://irep.iium.edu.my/2127/
http://irep.iium.edu.my/2127/
http://irep.iium.edu.my/2127/
http://irep.iium.edu.my/2127/1/mukai2010_fisheries_science.pdf
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recordtype eprints
spelling iium-21272011-12-19T03:07:44Z http://irep.iium.edu.my/2127/ Feeding behavior under dark conditions in larvae of sutchi catfish Pangasianodon hypophthalmus Mukai, Yukinori Tuzan, Audrey Daning Leong, Seng Lim Yahaya, Syahirah SH Aquaculture. Fisheries. Angling Sutchi catfish Pangasianodon hypophthalmus hatch with morphologically immature sensory organs; however, sensory organs develop rapidly with larval growth. Two-day-old larvae commenced ingesting Artemia nauplii. The larvae displayed many taste buds on the barbels, the head surface, and in the buccal cavity. Other sense organs were also well developed at this stage. Feeding experiments revealed that 2-day-old larvae ingested Artemia under both light and dark conditions, moreover, the larvae could ingest frozen dead Artemia. The ingestion rates for 4- and 7-day-old larvae were significantly higher under dark conditions than under light conditions. The rates using frozen dead Artemia were mostly higher than the rates using live Artemia. Therefore, feeding behavior under dark conditions is most likely not mediated by visual or mechanical senses, but rather by chemosensory senses, such as taste buds. Larval fish are vulnerable to predators; thus, if they can search for and eat food at night, they can avoid diurnal predators. The behavior observed here appears to represent their survival strategy. Moreover, these results suggest a new possibility that sutchi catfish larvae can be reared under dark or dim light conditions in order to improve survival and growth rates as in the case of African catfish Clarias gariepinus. Springer Tokyo 2010 Article PeerReviewed application/pdf en http://irep.iium.edu.my/2127/1/mukai2010_fisheries_science.pdf Mukai, Yukinori and Tuzan, Audrey Daning and Leong, Seng Lim and Yahaya, Syahirah (2010) Feeding behavior under dark conditions in larvae of sutchi catfish Pangasianodon hypophthalmus. Fisheries Science, 76 (3). pp. 457-461. ISSN 0919-9268 (P), 1444-2906 (O) http://www.springerlink.com/content/c6006t160137x301/ 10.1007/s12562-010-0237-3
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
Tuzan, Audrey Daning
Leong, Seng Lim
Yahaya, Syahirah
Feeding behavior under dark conditions in larvae of sutchi catfish Pangasianodon hypophthalmus
description Sutchi catfish Pangasianodon hypophthalmus hatch with morphologically immature sensory organs; however, sensory organs develop rapidly with larval growth. Two-day-old larvae commenced ingesting Artemia nauplii. The larvae displayed many taste buds on the barbels, the head surface, and in the buccal cavity. Other sense organs were also well developed at this stage. Feeding experiments revealed that 2-day-old larvae ingested Artemia under both light and dark conditions, moreover, the larvae could ingest frozen dead Artemia. The ingestion rates for 4- and 7-day-old larvae were significantly higher under dark conditions than under light conditions. The rates using frozen dead Artemia were mostly higher than the rates using live Artemia. Therefore, feeding behavior under dark conditions is most likely not mediated by visual or mechanical senses, but rather by chemosensory senses, such as taste buds. Larval fish are vulnerable to predators; thus, if they can search for and eat food at night, they can avoid diurnal predators. The behavior observed here appears to represent their survival strategy. Moreover, these results suggest a new possibility that sutchi catfish larvae can be reared under dark or dim light conditions in order to improve survival and growth rates as in the case of African catfish Clarias gariepinus.
format Article
author Mukai, Yukinori
Tuzan, Audrey Daning
Leong, Seng Lim
Yahaya, Syahirah
author_facet Mukai, Yukinori
Tuzan, Audrey Daning
Leong, Seng Lim
Yahaya, Syahirah
author_sort Mukai, Yukinori
title Feeding behavior under dark conditions in larvae of sutchi catfish Pangasianodon hypophthalmus
title_short Feeding behavior under dark conditions in larvae of sutchi catfish Pangasianodon hypophthalmus
title_full Feeding behavior under dark conditions in larvae of sutchi catfish Pangasianodon hypophthalmus
title_fullStr Feeding behavior under dark conditions in larvae of sutchi catfish Pangasianodon hypophthalmus
title_full_unstemmed Feeding behavior under dark conditions in larvae of sutchi catfish Pangasianodon hypophthalmus
title_sort feeding behavior under dark conditions in larvae of sutchi catfish pangasianodon hypophthalmus
publisher Springer Tokyo
publishDate 2010
url http://irep.iium.edu.my/2127/
http://irep.iium.edu.my/2127/
http://irep.iium.edu.my/2127/
http://irep.iium.edu.my/2127/1/mukai2010_fisheries_science.pdf
first_indexed 2023-09-18T20:09:39Z
last_indexed 2023-09-18T20:09:39Z
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