Photoprotective Pigments in a Pond Morph of Daphnia middendorffiana
Two morphs of Daphnia middendorffiana, a pigmented form with a dorsal black patch found commonly throughout Alaska in ponds and a nonpigmented form found in some lakes in the same vicinity, were exposed to natural sunlight conditions. The nonpigmented morph suffered higher mortality in sunlight than...
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The Arctic Institute of North America
1983
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ftunivcalgaryojs:oai:journalhosting.ucalgary.ca:article/65344 2023-05-15T14:19:16+02:00 Photoprotective Pigments in a Pond Morph of Daphnia middendorffiana Luecke, Chris O'Brien, W. John 1983-01-01 application/pdf https://journalhosting.ucalgary.ca/index.php/arctic/article/view/65344 eng eng The Arctic Institute of North America https://journalhosting.ucalgary.ca/index.php/arctic/article/view/65344/49258 https://journalhosting.ucalgary.ca/index.php/arctic/article/view/65344 ARCTIC; Vol. 36 No. 4 (1983): December: 311–395; 365-368 1923-1245 0004-0843 Adaptation (Biology) Daphnia Predation Tundra ponds Zooplankton Toolik Lake Alaska info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion research-article 1983 ftunivcalgaryojs 2022-03-22T21:22:25Z Two morphs of Daphnia middendorffiana, a pigmented form with a dorsal black patch found commonly throughout Alaska in ponds and a nonpigmented form found in some lakes in the same vicinity, were exposed to natural sunlight conditions. The nonpigmented morph suffered higher mortality in sunlight than did the dark morph, and the black patch was lost when animals were protected from exposure to light. The pigmentation appears to protect Daphnia middendorffiana from the harmful effects of natural radiation. This pigmentation pattern is an adaptation to living in shallow ponds exposed to high light intensities and few visual-feeding predators.Key words: light toxicity, Daphnia middendorffiana, pigmented pond morph, Alaska, arctic ponds Mots clés: toxicité de la lumière, Daphnia middendorffiana, forme pigmentée, Alaska, mares arctiques Article in Journal/Newspaper Arctic Arctic Arctique* Tundra Zooplankton Alaska University of Calgary Journal Hosting Arctic ARCTIC 36 4 |
institution |
Open Polar |
collection |
University of Calgary Journal Hosting |
op_collection_id |
ftunivcalgaryojs |
language |
English |
topic |
Adaptation (Biology) Daphnia Predation Tundra ponds Zooplankton Toolik Lake Alaska |
spellingShingle |
Adaptation (Biology) Daphnia Predation Tundra ponds Zooplankton Toolik Lake Alaska Luecke, Chris O'Brien, W. John Photoprotective Pigments in a Pond Morph of Daphnia middendorffiana |
topic_facet |
Adaptation (Biology) Daphnia Predation Tundra ponds Zooplankton Toolik Lake Alaska |
description |
Two morphs of Daphnia middendorffiana, a pigmented form with a dorsal black patch found commonly throughout Alaska in ponds and a nonpigmented form found in some lakes in the same vicinity, were exposed to natural sunlight conditions. The nonpigmented morph suffered higher mortality in sunlight than did the dark morph, and the black patch was lost when animals were protected from exposure to light. The pigmentation appears to protect Daphnia middendorffiana from the harmful effects of natural radiation. This pigmentation pattern is an adaptation to living in shallow ponds exposed to high light intensities and few visual-feeding predators.Key words: light toxicity, Daphnia middendorffiana, pigmented pond morph, Alaska, arctic ponds Mots clés: toxicité de la lumière, Daphnia middendorffiana, forme pigmentée, Alaska, mares arctiques |
format |
Article in Journal/Newspaper |
author |
Luecke, Chris O'Brien, W. John |
author_facet |
Luecke, Chris O'Brien, W. John |
author_sort |
Luecke, Chris |
title |
Photoprotective Pigments in a Pond Morph of Daphnia middendorffiana |
title_short |
Photoprotective Pigments in a Pond Morph of Daphnia middendorffiana |
title_full |
Photoprotective Pigments in a Pond Morph of Daphnia middendorffiana |
title_fullStr |
Photoprotective Pigments in a Pond Morph of Daphnia middendorffiana |
title_full_unstemmed |
Photoprotective Pigments in a Pond Morph of Daphnia middendorffiana |
title_sort |
photoprotective pigments in a pond morph of daphnia middendorffiana |
publisher |
The Arctic Institute of North America |
publishDate |
1983 |
url |
https://journalhosting.ucalgary.ca/index.php/arctic/article/view/65344 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Arctic Arctique* Tundra Zooplankton Alaska |
genre_facet |
Arctic Arctic Arctique* Tundra Zooplankton Alaska |
op_source |
ARCTIC; Vol. 36 No. 4 (1983): December: 311–395; 365-368 1923-1245 0004-0843 |
op_relation |
https://journalhosting.ucalgary.ca/index.php/arctic/article/view/65344/49258 https://journalhosting.ucalgary.ca/index.php/arctic/article/view/65344 |
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ARCTIC |
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36 |
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4 |
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1766290904650350592 |