Blood Chemistry, Biochemical Composition, and the Annual Reproductive Cycle in the Giant Scallop, Placopecten magellanicus , from Southeast Newfoundland
Gametogenesis in the giant scallop, Placopecten magellanicus (Gmelin), occurs in early summer and spawning takes place during August and September. The gonad differentiates between March and May, when the water temperature is low (0 to −1 °C) and food supply high. Gonad growth also begins at this ti...
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Canadian Science Publishing
1977
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crcansciencepubl:10.1139/f77-277 2023-12-17T10:44:54+01:00 Blood Chemistry, Biochemical Composition, and the Annual Reproductive Cycle in the Giant Scallop, Placopecten magellanicus , from Southeast Newfoundland Thompson, R. J. 1977 http://dx.doi.org/10.1139/f77-277 http://www.nrcresearchpress.com/doi/pdf/10.1139/f77-277 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Journal of the Fisheries Research Board of Canada volume 34, issue 11, page 2089-2103 ISSN 0015-296X General Medicine journal-article 1977 crcansciencepubl https://doi.org/10.1139/f77-277 2023-11-19T13:38:41Z Gametogenesis in the giant scallop, Placopecten magellanicus (Gmelin), occurs in early summer and spawning takes place during August and September. The gonad differentiates between March and May, when the water temperature is low (0 to −1 °C) and food supply high. Gonad growth also begins at this time. Energy reserves from the previous year do not seem to play a significant part in subsequent growth and maturation of the gonad. There is no accumulation of metabolic reserves in the scallop gonad after spawning; in winter, the gonad is very small and inactive. Levels of lipid (mostly phospholipids and free sterols), protein, low molecular weight carbohydrate, and glycogen increase in the plasma during the period of gonad growth and maturation. The amount of glycogen in the circulating hemocytes is greater in summer than in winter. Key words: Placopecten magellanicus, bivalve, scallop, reproductive cycle, blood, hemolymph, hemocyte, blood chemistry, glycogen, phospholipid, sterol Article in Journal/Newspaper Newfoundland Canadian Science Publishing (via Crossref) Journal of the Fisheries Research Board of Canada 34 11 2089 2103 |
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Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
General Medicine |
spellingShingle |
General Medicine Thompson, R. J. Blood Chemistry, Biochemical Composition, and the Annual Reproductive Cycle in the Giant Scallop, Placopecten magellanicus , from Southeast Newfoundland |
topic_facet |
General Medicine |
description |
Gametogenesis in the giant scallop, Placopecten magellanicus (Gmelin), occurs in early summer and spawning takes place during August and September. The gonad differentiates between March and May, when the water temperature is low (0 to −1 °C) and food supply high. Gonad growth also begins at this time. Energy reserves from the previous year do not seem to play a significant part in subsequent growth and maturation of the gonad. There is no accumulation of metabolic reserves in the scallop gonad after spawning; in winter, the gonad is very small and inactive. Levels of lipid (mostly phospholipids and free sterols), protein, low molecular weight carbohydrate, and glycogen increase in the plasma during the period of gonad growth and maturation. The amount of glycogen in the circulating hemocytes is greater in summer than in winter. Key words: Placopecten magellanicus, bivalve, scallop, reproductive cycle, blood, hemolymph, hemocyte, blood chemistry, glycogen, phospholipid, sterol |
format |
Article in Journal/Newspaper |
author |
Thompson, R. J. |
author_facet |
Thompson, R. J. |
author_sort |
Thompson, R. J. |
title |
Blood Chemistry, Biochemical Composition, and the Annual Reproductive Cycle in the Giant Scallop, Placopecten magellanicus , from Southeast Newfoundland |
title_short |
Blood Chemistry, Biochemical Composition, and the Annual Reproductive Cycle in the Giant Scallop, Placopecten magellanicus , from Southeast Newfoundland |
title_full |
Blood Chemistry, Biochemical Composition, and the Annual Reproductive Cycle in the Giant Scallop, Placopecten magellanicus , from Southeast Newfoundland |
title_fullStr |
Blood Chemistry, Biochemical Composition, and the Annual Reproductive Cycle in the Giant Scallop, Placopecten magellanicus , from Southeast Newfoundland |
title_full_unstemmed |
Blood Chemistry, Biochemical Composition, and the Annual Reproductive Cycle in the Giant Scallop, Placopecten magellanicus , from Southeast Newfoundland |
title_sort |
blood chemistry, biochemical composition, and the annual reproductive cycle in the giant scallop, placopecten magellanicus , from southeast newfoundland |
publisher |
Canadian Science Publishing |
publishDate |
1977 |
url |
http://dx.doi.org/10.1139/f77-277 http://www.nrcresearchpress.com/doi/pdf/10.1139/f77-277 |
genre |
Newfoundland |
genre_facet |
Newfoundland |
op_source |
Journal of the Fisheries Research Board of Canada volume 34, issue 11, page 2089-2103 ISSN 0015-296X |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/f77-277 |
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Journal of the Fisheries Research Board of Canada |
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34 |
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11 |
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2089 |
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2103 |
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1785564397311098880 |