What drives the diel vertical migrations of Antarctic midwater fish?
Like their counterparts at lower latitudes, many Antarctic midwater fish make extensive, diel vertical migrations. However, Antarctic species make these migrations in the absence of two of the three selective advantages generally ascribed to this behaviour. Because the water column is nearly isother...
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Cambridge University Press (CUP)
2003
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Online Access: | http://dx.doi.org/10.1017/s0025315403007586h https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0025315403007586 |
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crcambridgeupr:10.1017/s0025315403007586h 2024-03-03T08:38:26+00:00 What drives the diel vertical migrations of Antarctic midwater fish? Robison, Bruce H. 2003 http://dx.doi.org/10.1017/s0025315403007586h https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0025315403007586 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Journal of the Marine Biological Association of the United Kingdom volume 83, issue 3, page 639-642 ISSN 0025-3154 1469-7769 Aquatic Science journal-article 2003 crcambridgeupr https://doi.org/10.1017/s0025315403007586h 2024-02-08T08:31:20Z Like their counterparts at lower latitudes, many Antarctic midwater fish make extensive, diel vertical migrations. However, Antarctic species make these migrations in the absence of two of the three selective advantages generally ascribed to this behaviour. Because the water column is nearly isothermal, there is no metabolic bonus to be gained from thermal differences in habitat depth. Likewise, because their prey do not perform significant vertical migrations, the fish migrations act to diminish rather than enhance their feeding opportunities. For Antarctic midwater fish, the sole advantage of these migrations appears to be the avoidance of visually-cued predators in the upper part of the water column. An evaluation of the relative importance of the three selective factors supports the suggestion that predator avoidance may also be the principal driver of diel vertical migrations for midwater fish at lower latitudes. Article in Journal/Newspaper Antarc* Antarctic Cambridge University Press Antarctic Journal of the Marine Biological Association of the United Kingdom 83 3 639 642 |
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Cambridge University Press |
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crcambridgeupr |
language |
English |
topic |
Aquatic Science |
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Aquatic Science Robison, Bruce H. What drives the diel vertical migrations of Antarctic midwater fish? |
topic_facet |
Aquatic Science |
description |
Like their counterparts at lower latitudes, many Antarctic midwater fish make extensive, diel vertical migrations. However, Antarctic species make these migrations in the absence of two of the three selective advantages generally ascribed to this behaviour. Because the water column is nearly isothermal, there is no metabolic bonus to be gained from thermal differences in habitat depth. Likewise, because their prey do not perform significant vertical migrations, the fish migrations act to diminish rather than enhance their feeding opportunities. For Antarctic midwater fish, the sole advantage of these migrations appears to be the avoidance of visually-cued predators in the upper part of the water column. An evaluation of the relative importance of the three selective factors supports the suggestion that predator avoidance may also be the principal driver of diel vertical migrations for midwater fish at lower latitudes. |
format |
Article in Journal/Newspaper |
author |
Robison, Bruce H. |
author_facet |
Robison, Bruce H. |
author_sort |
Robison, Bruce H. |
title |
What drives the diel vertical migrations of Antarctic midwater fish? |
title_short |
What drives the diel vertical migrations of Antarctic midwater fish? |
title_full |
What drives the diel vertical migrations of Antarctic midwater fish? |
title_fullStr |
What drives the diel vertical migrations of Antarctic midwater fish? |
title_full_unstemmed |
What drives the diel vertical migrations of Antarctic midwater fish? |
title_sort |
what drives the diel vertical migrations of antarctic midwater fish? |
publisher |
Cambridge University Press (CUP) |
publishDate |
2003 |
url |
http://dx.doi.org/10.1017/s0025315403007586h https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0025315403007586 |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
Journal of the Marine Biological Association of the United Kingdom volume 83, issue 3, page 639-642 ISSN 0025-3154 1469-7769 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0025315403007586h |
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Journal of the Marine Biological Association of the United Kingdom |
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83 |
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3 |
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639 |
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642 |
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1792506830655586304 |