Effects Of Chemical Cues On The Larval Settlement, Metamorphosis And Mortality Rate Of Two Species Of Tropical Oysters (Crassostrea Iredalei And Crassostrea Belcheri)

Larvae settlement and metamorphosis were important for the cultivation of tropical inoysters in Malaysia. Inducing greater degree of larval settlement and metamorphosis of commercial oysters using neuroactive compounds can significantly improved the seed production in hatcheries for these valuable s...

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Main Author:	Teh, Chiew Peng
Format:	Thesis
Language:	English
Published:	2013
Subjects:	QH1 Natural history (General - Including nature conservation geographical distribution)
Online Access:	http://eprints.usm.my/44001/1/Teh%20Chiew%20Peng24.pdf
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id	my-usm-ep.44001
record_format	uketd_dc
spelling	my-usm-ep.440012019-04-12T05:26:16Z Effects Of Chemical Cues On The Larval Settlement, Metamorphosis And Mortality Rate Of Two Species Of Tropical Oysters (Crassostrea Iredalei And Crassostrea Belcheri) 2013-05 Teh, Chiew Peng QH1 Natural history (General - Including nature conservation, geographical distribution) Larvae settlement and metamorphosis were important for the cultivation of tropical inoysters in Malaysia. Inducing greater degree of larval settlement and metamorphosis of commercial oysters using neuroactive compounds can significantly improved the seed production in hatcheries for these valuable species. Although these oysters are cultivated in Malaysia, the market demand was higher compared to the production. For this purpose, this study was aimed at the laboratory assessment of the larval settlement and metamorphosis of two tropical oysters, Cupped oyster (Crassostrea belcheri) and Slipper oyster (C. iredalei) using four different neuroactive compounds, namely epinephrine (EPI), L-3,4-dihydroxyphenylalnine (L-DOPA), norepinephrine (NE) and serotonin (5-HT) at five different concentrations (10-3, 10-4, 10-5,10-6 and 10-7 M) for 1 h and 24 h exposure time. Larvae from different broodstock showed different efficiency toward different neuroactive compounds. This results show that NE at 10-7 M yielded the highest larval settlement and metamorphosis of C. belcheri larvae with 290 μm shell length (SL) (11 folds at 10-7 M compared with control). 10-7 M 5-HT managed to induce two folds of larval settlement and metamorphosis of C. belcheri 300 μm SL. 2013-05 Thesis http://eprints.usm.my/44001/ http://eprints.usm.my/44001/1/Teh%20Chiew%20Peng24.pdf application/pdf en public masters Universiti Sains Malaysia Pusat Pengajian Sains Kajihayat
institution	Universiti Sains Malaysia
collection	USM Institutional Repository
language	English
topic	QH1 Natural history (General - Including nature conservation geographical distribution)
spellingShingle	QH1 Natural history (General - Including nature conservation geographical distribution) Teh, Chiew Peng Effects Of Chemical Cues On The Larval Settlement, Metamorphosis And Mortality Rate Of Two Species Of Tropical Oysters (Crassostrea Iredalei And Crassostrea Belcheri)
description	Larvae settlement and metamorphosis were important for the cultivation of tropical inoysters in Malaysia. Inducing greater degree of larval settlement and metamorphosis of commercial oysters using neuroactive compounds can significantly improved the seed production in hatcheries for these valuable species. Although these oysters are cultivated in Malaysia, the market demand was higher compared to the production. For this purpose, this study was aimed at the laboratory assessment of the larval settlement and metamorphosis of two tropical oysters, Cupped oyster (Crassostrea belcheri) and Slipper oyster (C. iredalei) using four different neuroactive compounds, namely epinephrine (EPI), L-3,4-dihydroxyphenylalnine (L-DOPA), norepinephrine (NE) and serotonin (5-HT) at five different concentrations (10-3, 10-4, 10-5,10-6 and 10-7 M) for 1 h and 24 h exposure time. Larvae from different broodstock showed different efficiency toward different neuroactive compounds. This results show that NE at 10-7 M yielded the highest larval settlement and metamorphosis of C. belcheri larvae with 290 μm shell length (SL) (11 folds at 10-7 M compared with control). 10-7 M 5-HT managed to induce two folds of larval settlement and metamorphosis of C. belcheri 300 μm SL.
format	Thesis
qualification_level	Master's degree
author	Teh, Chiew Peng
author_facet	Teh, Chiew Peng
author_sort	Teh, Chiew Peng
title	Effects Of Chemical Cues On The Larval Settlement, Metamorphosis And Mortality Rate Of Two Species Of Tropical Oysters (Crassostrea Iredalei And Crassostrea Belcheri)
title_short	Effects Of Chemical Cues On The Larval Settlement, Metamorphosis And Mortality Rate Of Two Species Of Tropical Oysters (Crassostrea Iredalei And Crassostrea Belcheri)
title_full	Effects Of Chemical Cues On The Larval Settlement, Metamorphosis And Mortality Rate Of Two Species Of Tropical Oysters (Crassostrea Iredalei And Crassostrea Belcheri)
title_fullStr	Effects Of Chemical Cues On The Larval Settlement, Metamorphosis And Mortality Rate Of Two Species Of Tropical Oysters (Crassostrea Iredalei And Crassostrea Belcheri)
title_full_unstemmed	Effects Of Chemical Cues On The Larval Settlement, Metamorphosis And Mortality Rate Of Two Species Of Tropical Oysters (Crassostrea Iredalei And Crassostrea Belcheri)
title_sort	effects of chemical cues on the larval settlement, metamorphosis and mortality rate of two species of tropical oysters (crassostrea iredalei and crassostrea belcheri)
granting_institution	Universiti Sains Malaysia
granting_department	Pusat Pengajian Sains Kajihayat
publishDate	2013
url	http://eprints.usm.my/44001/1/Teh%20Chiew%20Peng24.pdf
_version_	1747821316728160256

Effects Of Chemical Cues On The Larval Settlement, Metamorphosis And Mortality Rate Of Two Species Of Tropical Oysters (Crassostrea Iredalei And Crassostrea Belcheri)

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