Seasonal changes in the calcium content of the blood of arctic cod
A well-marked seasonal cycle in the total calcium content of the plasma was shown to occur in adult cod, Gadus morhua L., of both sexes: these changes were not found in juvenile, immature cod. The changes in concentration of plasma total calcium appeared to be associated with gonadal maturation, the...
Published in: | Journal of the Marine Biological Association of the United Kingdom |
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Language: | English |
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Cambridge University Press (CUP)
1968
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Online Access: | http://dx.doi.org/10.1017/s0025315400032434 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0025315400032434 |
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crcambridgeupr:10.1017/s0025315400032434 2024-03-03T08:40:20+00:00 Seasonal changes in the calcium content of the blood of arctic cod Woodhead, P. M. J. 1968 http://dx.doi.org/10.1017/s0025315400032434 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0025315400032434 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Journal of the Marine Biological Association of the United Kingdom volume 48, issue 1, page 81-91 ISSN 0025-3154 1469-7769 Aquatic Science journal-article 1968 crcambridgeupr https://doi.org/10.1017/s0025315400032434 2024-02-08T08:29:14Z A well-marked seasonal cycle in the total calcium content of the plasma was shown to occur in adult cod, Gadus morhua L., of both sexes: these changes were not found in juvenile, immature cod. The changes in concentration of plasma total calcium appeared to be associated with gonadal maturation, the period of hypercalcaemia coinciding with the maturation cycle and the plasma calcium falling to a resting level again after spawning. Seasonal changes were greatest in the female cod and it is suggested that the raised level of calcium is associated with vitellogenesis in the ripening ovary, probably under the influence of oestrogens. The cycle in the male is not yet fully understood. Article in Journal/Newspaper Arctic cod Arctic Gadus morhua Cambridge University Press Arctic Journal of the Marine Biological Association of the United Kingdom 48 1 81 91 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
Aquatic Science |
spellingShingle |
Aquatic Science Woodhead, P. M. J. Seasonal changes in the calcium content of the blood of arctic cod |
topic_facet |
Aquatic Science |
description |
A well-marked seasonal cycle in the total calcium content of the plasma was shown to occur in adult cod, Gadus morhua L., of both sexes: these changes were not found in juvenile, immature cod. The changes in concentration of plasma total calcium appeared to be associated with gonadal maturation, the period of hypercalcaemia coinciding with the maturation cycle and the plasma calcium falling to a resting level again after spawning. Seasonal changes were greatest in the female cod and it is suggested that the raised level of calcium is associated with vitellogenesis in the ripening ovary, probably under the influence of oestrogens. The cycle in the male is not yet fully understood. |
format |
Article in Journal/Newspaper |
author |
Woodhead, P. M. J. |
author_facet |
Woodhead, P. M. J. |
author_sort |
Woodhead, P. M. J. |
title |
Seasonal changes in the calcium content of the blood of arctic cod |
title_short |
Seasonal changes in the calcium content of the blood of arctic cod |
title_full |
Seasonal changes in the calcium content of the blood of arctic cod |
title_fullStr |
Seasonal changes in the calcium content of the blood of arctic cod |
title_full_unstemmed |
Seasonal changes in the calcium content of the blood of arctic cod |
title_sort |
seasonal changes in the calcium content of the blood of arctic cod |
publisher |
Cambridge University Press (CUP) |
publishDate |
1968 |
url |
http://dx.doi.org/10.1017/s0025315400032434 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0025315400032434 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic cod Arctic Gadus morhua |
genre_facet |
Arctic cod Arctic Gadus morhua |
op_source |
Journal of the Marine Biological Association of the United Kingdom volume 48, issue 1, page 81-91 ISSN 0025-3154 1469-7769 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0025315400032434 |
container_title |
Journal of the Marine Biological Association of the United Kingdom |
container_volume |
48 |
container_issue |
1 |
container_start_page |
81 |
op_container_end_page |
91 |
_version_ |
1792496049470832640 |