Larval development of grouper hybrids Epinephelus Coioides X E. Fuscoguttatus and E. Coioides X E. Lanceolatus

This study was conducted to investigate the possibility of grouper hybridization for increasing potential in aquaculture. 2 combinations were produced, which were orange-spotted grouper E. coioides x tiger grouper E. fuscoguttatus (OGTG) and orange-spotted grouper E. coioidesx giant grouper E. lance...

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Main Author:	Koh, Ivan Chong Chu
Format:	Thesis
Language:	English English
Published:	2009
Subjects:	SH Aquaculture Fisheries Angling SH20.3-191 Aquaculture
Online Access:	https://eprints.ums.edu.my/id/eprint/6448/3/24%20PAGES.pdf https://eprints.ums.edu.my/id/eprint/6448/2/FULLTEXT.pdf
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id	my-ums-ep.6448
record_format	uketd_dc
spelling	my-ums-ep.64482024-01-25T07:57:50Z Larval development of grouper hybrids Epinephelus Coioides X E. Fuscoguttatus and E. Coioides X E. Lanceolatus 2009 Koh, Ivan Chong Chu SH Aquaculture. Fisheries. Angling SH20.3-191 Aquaculture This study was conducted to investigate the possibility of grouper hybridization for increasing potential in aquaculture. 2 combinations were produced, which were orange-spotted grouper E. coioides x tiger grouper E. fuscoguttatus (OGTG) and orange-spotted grouper E. coioidesx giant grouper E. lanceolatus(OGGG). The egg and larval development of the above new hybrids were observed under artificial conditions. Newly ovulated eggs from a female E. coioides (7.5 kg in body weight) were measured at 806+20 IJm (mean+SD) in diameter and weighed 3,505 eggs/g. After fertilization with sperm obtained from a male E. fuscoguttatus (11.0 kg in body weight) and a male E. lanceolatus (35.0 kg in body weight), the eggs diameter measured 833+221Jm (OGTG) and 833+221Jm (OGGG). The eggs of both hybrids hatched at 17 h 30 min (17:30 h) (OGTG) and 17:15 h (OGGG) after fertilization. Early larval development was similar in both hybrids till metamorphosis. Larvae of both hybrids commenced first feeding at 3 days after hatched (d AH) when larvae were morphologically prepared. Hybrid larvae showed typical early Epinephelus type pigmentation and differentiation of dorsal and pelvicfin spines was observed prior to 10 d AH and thereafter elongated. 750 (OGTG) and 235 (OGGG) tails with mean total length of 22.8+3.6 mm and 28.4+2.5 mm of 50 d AH juveniles were produced. Both hybrids showed normal development till juvenile stage. The hybrids showed potential for aquaculture and the results of this study could help establishing the basis of seed production of the hybrids. 2009 Thesis https://eprints.ums.edu.my/id/eprint/6448/ https://eprints.ums.edu.my/id/eprint/6448/3/24%20PAGES.pdf text en public https://eprints.ums.edu.my/id/eprint/6448/2/FULLTEXT.pdf text en validuser masters Universiti Malaysia Sabah Borneo Marine Research Institute
institution	Universiti Malaysia Sabah
collection	UMS Institutional Repository
language	English English
topic	SH Aquaculture Fisheries Angling SH20.3-191 Aquaculture
spellingShingle	SH Aquaculture Fisheries Angling SH20.3-191 Aquaculture Koh, Ivan Chong Chu Larval development of grouper hybrids Epinephelus Coioides X E. Fuscoguttatus and E. Coioides X E. Lanceolatus
description	This study was conducted to investigate the possibility of grouper hybridization for increasing potential in aquaculture. 2 combinations were produced, which were orange-spotted grouper E. coioides x tiger grouper E. fuscoguttatus (OGTG) and orange-spotted grouper E. coioidesx giant grouper E. lanceolatus(OGGG). The egg and larval development of the above new hybrids were observed under artificial conditions. Newly ovulated eggs from a female E. coioides (7.5 kg in body weight) were measured at 806+20 IJm (mean+SD) in diameter and weighed 3,505 eggs/g. After fertilization with sperm obtained from a male E. fuscoguttatus (11.0 kg in body weight) and a male E. lanceolatus (35.0 kg in body weight), the eggs diameter measured 833+221Jm (OGTG) and 833+221Jm (OGGG). The eggs of both hybrids hatched at 17 h 30 min (17:30 h) (OGTG) and 17:15 h (OGGG) after fertilization. Early larval development was similar in both hybrids till metamorphosis. Larvae of both hybrids commenced first feeding at 3 days after hatched (d AH) when larvae were morphologically prepared. Hybrid larvae showed typical early Epinephelus type pigmentation and differentiation of dorsal and pelvicfin spines was observed prior to 10 d AH and thereafter elongated. 750 (OGTG) and 235 (OGGG) tails with mean total length of 22.8+3.6 mm and 28.4+2.5 mm of 50 d AH juveniles were produced. Both hybrids showed normal development till juvenile stage. The hybrids showed potential for aquaculture and the results of this study could help establishing the basis of seed production of the hybrids.
format	Thesis
qualification_level	Master's degree
author	Koh, Ivan Chong Chu
author_facet	Koh, Ivan Chong Chu
author_sort	Koh, Ivan Chong Chu
title	Larval development of grouper hybrids Epinephelus Coioides X E. Fuscoguttatus and E. Coioides X E. Lanceolatus
title_short	Larval development of grouper hybrids Epinephelus Coioides X E. Fuscoguttatus and E. Coioides X E. Lanceolatus
title_full	Larval development of grouper hybrids Epinephelus Coioides X E. Fuscoguttatus and E. Coioides X E. Lanceolatus
title_fullStr	Larval development of grouper hybrids Epinephelus Coioides X E. Fuscoguttatus and E. Coioides X E. Lanceolatus
title_full_unstemmed	Larval development of grouper hybrids Epinephelus Coioides X E. Fuscoguttatus and E. Coioides X E. Lanceolatus
title_sort	larval development of grouper hybrids epinephelus coioides x e. fuscoguttatus and e. coioides x e. lanceolatus
granting_institution	Universiti Malaysia Sabah
granting_department	Borneo Marine Research Institute
publishDate	2009
url	https://eprints.ums.edu.my/id/eprint/6448/3/24%20PAGES.pdf https://eprints.ums.edu.my/id/eprint/6448/2/FULLTEXT.pdf
_version_	1794022692987338752

Larval development of grouper hybrids Epinephelus Coioides X E. Fuscoguttatus and E. Coioides X E. Lanceolatus

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