The effects of salinity and low temperature on eggs of the Icelandic capelin Mallotus villosus
The embryos of Icelandic capelin (which spawn subtidally) tolerate as low temperatures, and are as euryhaline, as those of Balsfjord capelin which spawn intertidally. The median lethal lower temperature for Icelandic capelin eggs exposed for 6 h to low temperatures in frozen seawater films (34‰) is...
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Cambridge University Press (CUP)
1989
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Online Access: | http://dx.doi.org/10.1017/s0025315400049055 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0025315400049055 |
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crcambridgeupr:10.1017/s0025315400049055 2024-03-03T08:43:01+00:00 The effects of salinity and low temperature on eggs of the Icelandic capelin Mallotus villosus Davenport, John 1989 http://dx.doi.org/10.1017/s0025315400049055 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0025315400049055 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Journal of the Marine Biological Association of the United Kingdom volume 69, issue 1, page 1-9 ISSN 0025-3154 1469-7769 Aquatic Science journal-article 1989 crcambridgeupr https://doi.org/10.1017/s0025315400049055 2024-02-08T08:42:26Z The embryos of Icelandic capelin (which spawn subtidally) tolerate as low temperatures, and are as euryhaline, as those of Balsfjord capelin which spawn intertidally. The median lethal lower temperature for Icelandic capelin eggs exposed for 6 h to low temperatures in frozen seawater films (34‰) is -6.3°C. The median lethal high salinity (6 h exposure) is 88.3‰. Eggs were reared and hatched successfully in all salinities from 1.5 to 34‰. When exposed to high salinities capelin eggs shrink in a matter of seconds (shrinkage being manifested in depressions of the chorion), but resume a normal shape in a few minutes as salts diffuse into the perivitelline fluid. Evidence is presented to show that mortality in frozen seawater films is due to osmotic dehydration, rather than to a final invasion by ice crystals. A model of freezing avoidance in capelin eggs is described. Article in Journal/Newspaper Balsfjord Cambridge University Press Balsfjord ENVELOPE(19.227,19.227,69.240,69.240) Journal of the Marine Biological Association of the United Kingdom 69 1 1 9 |
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Open Polar |
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Cambridge University Press |
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crcambridgeupr |
language |
English |
topic |
Aquatic Science |
spellingShingle |
Aquatic Science Davenport, John The effects of salinity and low temperature on eggs of the Icelandic capelin Mallotus villosus |
topic_facet |
Aquatic Science |
description |
The embryos of Icelandic capelin (which spawn subtidally) tolerate as low temperatures, and are as euryhaline, as those of Balsfjord capelin which spawn intertidally. The median lethal lower temperature for Icelandic capelin eggs exposed for 6 h to low temperatures in frozen seawater films (34‰) is -6.3°C. The median lethal high salinity (6 h exposure) is 88.3‰. Eggs were reared and hatched successfully in all salinities from 1.5 to 34‰. When exposed to high salinities capelin eggs shrink in a matter of seconds (shrinkage being manifested in depressions of the chorion), but resume a normal shape in a few minutes as salts diffuse into the perivitelline fluid. Evidence is presented to show that mortality in frozen seawater films is due to osmotic dehydration, rather than to a final invasion by ice crystals. A model of freezing avoidance in capelin eggs is described. |
format |
Article in Journal/Newspaper |
author |
Davenport, John |
author_facet |
Davenport, John |
author_sort |
Davenport, John |
title |
The effects of salinity and low temperature on eggs of the Icelandic capelin Mallotus villosus |
title_short |
The effects of salinity and low temperature on eggs of the Icelandic capelin Mallotus villosus |
title_full |
The effects of salinity and low temperature on eggs of the Icelandic capelin Mallotus villosus |
title_fullStr |
The effects of salinity and low temperature on eggs of the Icelandic capelin Mallotus villosus |
title_full_unstemmed |
The effects of salinity and low temperature on eggs of the Icelandic capelin Mallotus villosus |
title_sort |
effects of salinity and low temperature on eggs of the icelandic capelin mallotus villosus |
publisher |
Cambridge University Press (CUP) |
publishDate |
1989 |
url |
http://dx.doi.org/10.1017/s0025315400049055 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0025315400049055 |
long_lat |
ENVELOPE(19.227,19.227,69.240,69.240) |
geographic |
Balsfjord |
geographic_facet |
Balsfjord |
genre |
Balsfjord |
genre_facet |
Balsfjord |
op_source |
Journal of the Marine Biological Association of the United Kingdom volume 69, issue 1, page 1-9 ISSN 0025-3154 1469-7769 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0025315400049055 |
container_title |
Journal of the Marine Biological Association of the United Kingdom |
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69 |
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1 |
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1 |
op_container_end_page |
9 |
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1792498447365963776 |