Differences in lens optical plasticity in two gadoid fishes meeting in the Arctic.
Arctic and boreal/temperate species are likely to be evolutionary adapted to different light regimes. Currently, the boreal/temperate Atlantic cod (Gadus morhua) is coexisting with the native polar cod (Boreogadus saida) in the Arctic waters around Svalbard, Norway. Here, we studied light/dark adapt...
Published in: | Journal of Comparative Physiology A |
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Online Access: | https://lup.lub.lu.se/record/4691142 https://doi.org/10.1007/s00359-014-0941-z |
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ftulundlup:oai:lup.lub.lu.se:e5a002eb-cff2-4b07-9db9-4d0e607bb04e 2023-05-15T14:51:39+02:00 Differences in lens optical plasticity in two gadoid fishes meeting in the Arctic. Jönsson, Mikael Varpe, Oystein Kozlowski, Tomasz Berge, Jørgen Kröger, Ronald 2014 https://lup.lub.lu.se/record/4691142 https://doi.org/10.1007/s00359-014-0941-z eng eng Springer https://lup.lub.lu.se/record/4691142 http://dx.doi.org/10.1007/s00359-014-0941-z pmid:25240636 wos:000344328500004 scopus:84910119437 Journal of Comparative Physiology A; 200(11), pp 949-957 (2014) ISSN: 1432-1351 Zoology contributiontojournal/article info:eu-repo/semantics/article text 2014 ftulundlup https://doi.org/10.1007/s00359-014-0941-z 2023-02-01T23:28:36Z Arctic and boreal/temperate species are likely to be evolutionary adapted to different light regimes. Currently, the boreal/temperate Atlantic cod (Gadus morhua) is coexisting with the native polar cod (Boreogadus saida) in the Arctic waters around Svalbard, Norway. Here, we studied light/dark adaptative optical plasticity of their eye lenses by exposing fish to bright light during the polar night. Schlieren photography, high-definition laser scanning and ray tracing were used to determine the optical properties of excised crystalline lenses. Both species have multifocal lenses, an optical adaptation for improved color vision. In polar cod, the optical properties of the lens were independent of light exposure. In the more southern Atlantic cod, the optical properties of the lens changed within hours upon exposure to light, even after months of darkness. Such fast optical adjustment has previously only been shown in a tropical cichlid. During the polar night the Atlantic cod lens seems to be unregulated and dysfunctional since it had an unsuitable focal length and severe spherical aberration. We present a system, to our knowledge unique, for studying visual plasticity on different timescales in relation to evolutionary history and present the first study on the polar cod visual system. Article in Journal/Newspaper Arctic atlantic cod Boreogadus saida Gadus morhua polar cod polar night Svalbard Lund University Publications (LUP) Arctic Norway Svalbard Journal of Comparative Physiology A 200 11 949 957 |
institution |
Open Polar |
collection |
Lund University Publications (LUP) |
op_collection_id |
ftulundlup |
language |
English |
topic |
Zoology |
spellingShingle |
Zoology Jönsson, Mikael Varpe, Oystein Kozlowski, Tomasz Berge, Jørgen Kröger, Ronald Differences in lens optical plasticity in two gadoid fishes meeting in the Arctic. |
topic_facet |
Zoology |
description |
Arctic and boreal/temperate species are likely to be evolutionary adapted to different light regimes. Currently, the boreal/temperate Atlantic cod (Gadus morhua) is coexisting with the native polar cod (Boreogadus saida) in the Arctic waters around Svalbard, Norway. Here, we studied light/dark adaptative optical plasticity of their eye lenses by exposing fish to bright light during the polar night. Schlieren photography, high-definition laser scanning and ray tracing were used to determine the optical properties of excised crystalline lenses. Both species have multifocal lenses, an optical adaptation for improved color vision. In polar cod, the optical properties of the lens were independent of light exposure. In the more southern Atlantic cod, the optical properties of the lens changed within hours upon exposure to light, even after months of darkness. Such fast optical adjustment has previously only been shown in a tropical cichlid. During the polar night the Atlantic cod lens seems to be unregulated and dysfunctional since it had an unsuitable focal length and severe spherical aberration. We present a system, to our knowledge unique, for studying visual plasticity on different timescales in relation to evolutionary history and present the first study on the polar cod visual system. |
format |
Article in Journal/Newspaper |
author |
Jönsson, Mikael Varpe, Oystein Kozlowski, Tomasz Berge, Jørgen Kröger, Ronald |
author_facet |
Jönsson, Mikael Varpe, Oystein Kozlowski, Tomasz Berge, Jørgen Kröger, Ronald |
author_sort |
Jönsson, Mikael |
title |
Differences in lens optical plasticity in two gadoid fishes meeting in the Arctic. |
title_short |
Differences in lens optical plasticity in two gadoid fishes meeting in the Arctic. |
title_full |
Differences in lens optical plasticity in two gadoid fishes meeting in the Arctic. |
title_fullStr |
Differences in lens optical plasticity in two gadoid fishes meeting in the Arctic. |
title_full_unstemmed |
Differences in lens optical plasticity in two gadoid fishes meeting in the Arctic. |
title_sort |
differences in lens optical plasticity in two gadoid fishes meeting in the arctic. |
publisher |
Springer |
publishDate |
2014 |
url |
https://lup.lub.lu.se/record/4691142 https://doi.org/10.1007/s00359-014-0941-z |
geographic |
Arctic Norway Svalbard |
geographic_facet |
Arctic Norway Svalbard |
genre |
Arctic atlantic cod Boreogadus saida Gadus morhua polar cod polar night Svalbard |
genre_facet |
Arctic atlantic cod Boreogadus saida Gadus morhua polar cod polar night Svalbard |
op_source |
Journal of Comparative Physiology A; 200(11), pp 949-957 (2014) ISSN: 1432-1351 |
op_relation |
https://lup.lub.lu.se/record/4691142 http://dx.doi.org/10.1007/s00359-014-0941-z pmid:25240636 wos:000344328500004 scopus:84910119437 |
op_doi |
https://doi.org/10.1007/s00359-014-0941-z |
container_title |
Journal of Comparative Physiology A |
container_volume |
200 |
container_issue |
11 |
container_start_page |
949 |
op_container_end_page |
957 |
_version_ |
1766322780065759232 |