Biochemical changes in the Pacific oyster, Crassostrea gigas (Thunberg, 1795), during larval development and metamorphosis
The energy strategies of early development of the Pacific Oyster, Crassostrea gigas, were examined. Changes in proteins, total carbohydrates, free reducing sugars and total and neutral lipids were determined for the unfertilized egg and larval stages through 13 days post-settlement. During early lar...
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ftoregonstate:ir.library.oregonstate.edu:x346d8160 2023-07-02T03:32:03+02:00 Biochemical changes in the Pacific oyster, Crassostrea gigas (Thunberg, 1795), during larval development and metamorphosis Bartlett, Bruce Robert Owczarzak, Alfred Zoology Oregon State University. Graduate School https://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/x346d8160 English [eng] eng Oregon State University https://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/x346d8160 Copyright Not Evaluated Oysters Dissertation ftoregonstate 2023-06-11T17:20:47Z The energy strategies of early development of the Pacific Oyster, Crassostrea gigas, were examined. Changes in proteins, total carbohydrates, free reducing sugars and total and neutral lipids were determined for the unfertilized egg and larval stages through 13 days post-settlement. During early larval stages neutral lipid levels decreased and provided the principle source of energy for development. Subsequently they remained unchanged throughout settlement and metamorphosis. Protein levels increased during larval stages and remained largely unchanged after settlement. Total carbohydrate levels were unchanged during larval development and through settlement and metamorphosis. Phospholipid values rose slightly during early larval stages and remained unchanged through settlement and metamorphosis. Starvation experiments confirmed the aforementioned findings that neutral lipid was an important source of energy during early larval life. Protein, however, contributed more energy than neutral lipid in late larval life. This study has shown that in C. gigas development, contrary to the European oyster Ostrea edulis, neutral lipid was not accumulated during larval feeding nor utilized during settlement and metamorphosis relative to other organic fractions. Doctoral or Postdoctoral Thesis Crassostrea gigas Pacific oyster ScholarsArchive@OSU (Oregon State University) Pacific |
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English |
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Oysters |
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Oysters Bartlett, Bruce Robert Biochemical changes in the Pacific oyster, Crassostrea gigas (Thunberg, 1795), during larval development and metamorphosis |
topic_facet |
Oysters |
description |
The energy strategies of early development of the Pacific Oyster, Crassostrea gigas, were examined. Changes in proteins, total carbohydrates, free reducing sugars and total and neutral lipids were determined for the unfertilized egg and larval stages through 13 days post-settlement. During early larval stages neutral lipid levels decreased and provided the principle source of energy for development. Subsequently they remained unchanged throughout settlement and metamorphosis. Protein levels increased during larval stages and remained largely unchanged after settlement. Total carbohydrate levels were unchanged during larval development and through settlement and metamorphosis. Phospholipid values rose slightly during early larval stages and remained unchanged through settlement and metamorphosis. Starvation experiments confirmed the aforementioned findings that neutral lipid was an important source of energy during early larval life. Protein, however, contributed more energy than neutral lipid in late larval life. This study has shown that in C. gigas development, contrary to the European oyster Ostrea edulis, neutral lipid was not accumulated during larval feeding nor utilized during settlement and metamorphosis relative to other organic fractions. |
author2 |
Owczarzak, Alfred Zoology Oregon State University. Graduate School |
format |
Doctoral or Postdoctoral Thesis |
author |
Bartlett, Bruce Robert |
author_facet |
Bartlett, Bruce Robert |
author_sort |
Bartlett, Bruce Robert |
title |
Biochemical changes in the Pacific oyster, Crassostrea gigas (Thunberg, 1795), during larval development and metamorphosis |
title_short |
Biochemical changes in the Pacific oyster, Crassostrea gigas (Thunberg, 1795), during larval development and metamorphosis |
title_full |
Biochemical changes in the Pacific oyster, Crassostrea gigas (Thunberg, 1795), during larval development and metamorphosis |
title_fullStr |
Biochemical changes in the Pacific oyster, Crassostrea gigas (Thunberg, 1795), during larval development and metamorphosis |
title_full_unstemmed |
Biochemical changes in the Pacific oyster, Crassostrea gigas (Thunberg, 1795), during larval development and metamorphosis |
title_sort |
biochemical changes in the pacific oyster, crassostrea gigas (thunberg, 1795), during larval development and metamorphosis |
publisher |
Oregon State University |
url |
https://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/x346d8160 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Crassostrea gigas Pacific oyster |
genre_facet |
Crassostrea gigas Pacific oyster |
op_relation |
https://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/x346d8160 |
op_rights |
Copyright Not Evaluated |
_version_ |
1770271516039053312 |