The adaptive significance of chromatophores in the Arctic under-ice amphipod Apherusa glacialis
Solar radiation is a crucial factor governing biological processes in polar habitats. Containing harmful ultraviolet radiation (UVR), it can pose a threat for organisms inhabiting surface waters of polar oceans. The present study investigated the physiological color change in the obligate sympagic a...
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Springer Verlag
2011
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Online Access: | https://hdl.handle.net/10037/4005 https://doi.org/10.1007/s00300-010-0938-1 |
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ftunivtroemsoe:oai:munin.uit.no:10037/4005 2023-05-15T15:10:50+02:00 The adaptive significance of chromatophores in the Arctic under-ice amphipod Apherusa glacialis Fuhrmann, Mona Maria Nygård, Henrik Andreas Krapp, Rupert Berge, Jørgen Werner, Iris 2011 https://hdl.handle.net/10037/4005 https://doi.org/10.1007/s00300-010-0938-1 eng eng Springer Verlag Krapp, R.H. (2022). Living on the dark side? Investigations into under-ice light climate and sympagic amphipods. (Doctoral thesis). https://hdl.handle.net/10037/25272 . Polar Biology 34(2011) nr. 6 s. 823-832 FRIDAID 826255 doi:10.1007/s00300-010-0938-1 0722-4060 https://hdl.handle.net/10037/4005 URN:NBN:no-uit_munin_3726 openAccess VDP::Mathematics and natural science: 400::Zoology and botany: 480::Marine biology: 497 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Marinbiologi: 497 VDP::Mathematics and natural science: 400::Zoology and botany: 480::Ecology: 488 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Økologi: 488 Journal article Tidsskriftartikkel Peer reviewed 2011 ftunivtroemsoe https://doi.org/10.1007/s00300-010-0938-1 2022-05-25T22:58:56Z Solar radiation is a crucial factor governing biological processes in polar habitats. Containing harmful ultraviolet radiation (UVR), it can pose a threat for organisms inhabiting surface waters of polar oceans. The present study investigated the physiological color change in the obligate sympagic amphipod Apherusa glacialis mediated by red-brown chromatophores, which cover the body and internal organs of the species. Short-term experimental exposure to photosynthetic active radiation (PAR) led to pigment dispersal in the chromatophores, resulting in darkening of the animal. Irradiation in the PAR range (400-700 nm) was identified as the main trigger with high light intensities evoking marked responses within 15 min. After exposure to high PAR, darkness led to a slow aggregation of pigments in the cell center after 24 h. Experiments revealed no statistically significant change in coloration of the animal when exposed to different background colors nor UV radiation. Our results point to a dose- and time-dependent photoprotective role of chromatophores in the amphipod, presuming a shielding effect from harmful radiation in a dispersed state. The reversible nature of the physiological color change enables the species to adapt dynamically to prevailing light conditions and thereby minimize the cost of increased conspicuousness toward visually hunting predators. Article in Journal/Newspaper Arctic Polar Biology University of Tromsø: Munin Open Research Archive Arctic Polar Biology 34 6 823 832 |
institution |
Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
topic |
VDP::Mathematics and natural science: 400::Zoology and botany: 480::Marine biology: 497 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Marinbiologi: 497 VDP::Mathematics and natural science: 400::Zoology and botany: 480::Ecology: 488 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Økologi: 488 |
spellingShingle |
VDP::Mathematics and natural science: 400::Zoology and botany: 480::Marine biology: 497 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Marinbiologi: 497 VDP::Mathematics and natural science: 400::Zoology and botany: 480::Ecology: 488 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Økologi: 488 Fuhrmann, Mona Maria Nygård, Henrik Andreas Krapp, Rupert Berge, Jørgen Werner, Iris The adaptive significance of chromatophores in the Arctic under-ice amphipod Apherusa glacialis |
topic_facet |
VDP::Mathematics and natural science: 400::Zoology and botany: 480::Marine biology: 497 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Marinbiologi: 497 VDP::Mathematics and natural science: 400::Zoology and botany: 480::Ecology: 488 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Økologi: 488 |
description |
Solar radiation is a crucial factor governing biological processes in polar habitats. Containing harmful ultraviolet radiation (UVR), it can pose a threat for organisms inhabiting surface waters of polar oceans. The present study investigated the physiological color change in the obligate sympagic amphipod Apherusa glacialis mediated by red-brown chromatophores, which cover the body and internal organs of the species. Short-term experimental exposure to photosynthetic active radiation (PAR) led to pigment dispersal in the chromatophores, resulting in darkening of the animal. Irradiation in the PAR range (400-700 nm) was identified as the main trigger with high light intensities evoking marked responses within 15 min. After exposure to high PAR, darkness led to a slow aggregation of pigments in the cell center after 24 h. Experiments revealed no statistically significant change in coloration of the animal when exposed to different background colors nor UV radiation. Our results point to a dose- and time-dependent photoprotective role of chromatophores in the amphipod, presuming a shielding effect from harmful radiation in a dispersed state. The reversible nature of the physiological color change enables the species to adapt dynamically to prevailing light conditions and thereby minimize the cost of increased conspicuousness toward visually hunting predators. |
format |
Article in Journal/Newspaper |
author |
Fuhrmann, Mona Maria Nygård, Henrik Andreas Krapp, Rupert Berge, Jørgen Werner, Iris |
author_facet |
Fuhrmann, Mona Maria Nygård, Henrik Andreas Krapp, Rupert Berge, Jørgen Werner, Iris |
author_sort |
Fuhrmann, Mona Maria |
title |
The adaptive significance of chromatophores in the Arctic under-ice amphipod Apherusa glacialis |
title_short |
The adaptive significance of chromatophores in the Arctic under-ice amphipod Apherusa glacialis |
title_full |
The adaptive significance of chromatophores in the Arctic under-ice amphipod Apherusa glacialis |
title_fullStr |
The adaptive significance of chromatophores in the Arctic under-ice amphipod Apherusa glacialis |
title_full_unstemmed |
The adaptive significance of chromatophores in the Arctic under-ice amphipod Apherusa glacialis |
title_sort |
adaptive significance of chromatophores in the arctic under-ice amphipod apherusa glacialis |
publisher |
Springer Verlag |
publishDate |
2011 |
url |
https://hdl.handle.net/10037/4005 https://doi.org/10.1007/s00300-010-0938-1 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Polar Biology |
genre_facet |
Arctic Polar Biology |
op_relation |
Krapp, R.H. (2022). Living on the dark side? Investigations into under-ice light climate and sympagic amphipods. (Doctoral thesis). https://hdl.handle.net/10037/25272 . Polar Biology 34(2011) nr. 6 s. 823-832 FRIDAID 826255 doi:10.1007/s00300-010-0938-1 0722-4060 https://hdl.handle.net/10037/4005 URN:NBN:no-uit_munin_3726 |
op_rights |
openAccess |
op_doi |
https://doi.org/10.1007/s00300-010-0938-1 |
container_title |
Polar Biology |
container_volume |
34 |
container_issue |
6 |
container_start_page |
823 |
op_container_end_page |
832 |
_version_ |
1766341784278925312 |