High survival rate of sutchi catfish, Pangasianodon hypophthalmus, larvae reared under dark condition

The sutchi catfish, Pangasianodon hypophthalmus is an important species for aquaculture in Southeast Asia. However, the larvae demonstrate a low survival rate due to their strong cannibalism during rearing. The aim of the present study was to reduce their cannibalism and improve larval rearing metho...

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Main Author:	Mukai, Yukinori
Format:	Article
Language:	English
Published:	Academic Journals 2011
Subjects:	SH Aquaculture. Fisheries. Angling
Online Access:	http://irep.iium.edu.my/2076/ http://irep.iium.edu.my/2076/ http://irep.iium.edu.my/2076/ http://irep.iium.edu.my/2076/1/2011_JFAS_patin.htm

id	iium-2076
recordtype	eprints
spelling	iium-20762012-02-01T07:40:58Z http://irep.iium.edu.my/2076/ High survival rate of sutchi catfish, Pangasianodon hypophthalmus, larvae reared under dark condition Mukai, Yukinori SH Aquaculture. Fisheries. Angling The sutchi catfish, Pangasianodon hypophthalmus is an important species for aquaculture in Southeast Asia. However, the larvae demonstrate a low survival rate due to their strong cannibalism during rearing. The aim of the present study was to reduce their cannibalism and improve larval rearing methods. Larval rearing experiments were conducted under normal light conditions (following a diel rhythm) and continuous dark conditions with larval densities of 10, 20 and 40 individuals L-1 from hatching day to 20 days old. The trial with 10 individuals L-1 under dark conditions had the highest survival rate. The dark conditions with lower individual densities tended to produce higher survival rates than the light conditions with higher individual densities. Fish body weight on the final day of larval rearing showed that rearing larvae under dark conditions resulted in steady growth similar to growth under light conditions. It seemed that the feeding behavior of sutchi catfish depended on chemo-sense rather than visual sense. This study showed that the cannibalism of sutchi catfish larvae can be reduced by rearing under dark conditions at low densities with adequate access to food. Therefore, it was concluded that rearing under dark conditions is a method for reducing cannibalism and increasing survival rates. Academic Journals 2011 Article PeerReviewed application/pdf en http://irep.iium.edu.my/2076/1/2011_JFAS_patin.htm Mukai, Yukinori (2011) High survival rate of sutchi catfish, Pangasianodon hypophthalmus, larvae reared under dark condition. Journal of Fisheries and Aquatic Science, 6 (3). pp. 285-290. ISSN 1816-4927 http://scialert.net/abstract/?doi=jfas.2011.285.290 10.3923/jfas.2011.285.290
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 High survival rate of sutchi catfish, Pangasianodon hypophthalmus, larvae reared under dark condition
description	The sutchi catfish, Pangasianodon hypophthalmus is an important species for aquaculture in Southeast Asia. However, the larvae demonstrate a low survival rate due to their strong cannibalism during rearing. The aim of the present study was to reduce their cannibalism and improve larval rearing methods. Larval rearing experiments were conducted under normal light conditions (following a diel rhythm) and continuous dark conditions with larval densities of 10, 20 and 40 individuals L-1 from hatching day to 20 days old. The trial with 10 individuals L-1 under dark conditions had the highest survival rate. The dark conditions with lower individual densities tended to produce higher survival rates than the light conditions with higher individual densities. Fish body weight on the final day of larval rearing showed that rearing larvae under dark conditions resulted in steady growth similar to growth under light conditions. It seemed that the feeding behavior of sutchi catfish depended on chemo-sense rather than visual sense. This study showed that the cannibalism of sutchi catfish larvae can be reduced by rearing under dark conditions at low densities with adequate access to food. Therefore, it was concluded that rearing under dark conditions is a method for reducing cannibalism and increasing survival rates.
format	Article
author	Mukai, Yukinori
author_facet	Mukai, Yukinori
author_sort	Mukai, Yukinori
title	High survival rate of sutchi catfish, Pangasianodon hypophthalmus, larvae reared under dark condition
title_short	High survival rate of sutchi catfish, Pangasianodon hypophthalmus, larvae reared under dark condition
title_full	High survival rate of sutchi catfish, Pangasianodon hypophthalmus, larvae reared under dark condition
title_fullStr	High survival rate of sutchi catfish, Pangasianodon hypophthalmus, larvae reared under dark condition
title_full_unstemmed	High survival rate of sutchi catfish, Pangasianodon hypophthalmus, larvae reared under dark condition
title_sort	high survival rate of sutchi catfish, pangasianodon hypophthalmus, larvae reared under dark condition
publisher	Academic Journals
publishDate	2011
url	http://irep.iium.edu.my/2076/ http://irep.iium.edu.my/2076/ http://irep.iium.edu.my/2076/ http://irep.iium.edu.my/2076/1/2011_JFAS_patin.htm
first_indexed	2023-09-18T20:09:36Z
last_indexed	2023-09-18T20:09:36Z
_version_	1777407389163585536

High survival rate of sutchi catfish, Pangasianodon hypophthalmus, larvae reared under dark condition

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