Phototoxicity and fish predation: selective factors in color morphs
In the Toolik Lake region of arctic Alaska, Heterocope septentrionalis occurs in two distinct color morphs, dark red and pale green. The dark form tends to occur in shallow fishless ponds and the pale form in large, deep lakes with fish, Phototoxicity and fish predation experiments on the two morphs...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.490.7782 2023-05-15T15:03:10+02:00 Phototoxicity and fish predation: selective factors in color morphs Chris Luecke W. John O’brien The Pennsylvania State University CiteSeerX Archives 1981 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.490.7782 http://www.aslo.org/lo/toc/vol_26/issue_3/0454.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.490.7782 http://www.aslo.org/lo/toc/vol_26/issue_3/0454.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.aslo.org/lo/toc/vol_26/issue_3/0454.pdf well investigated. Fox et al. (1951) and text 1981 ftciteseerx 2016-01-08T08:29:59Z In the Toolik Lake region of arctic Alaska, Heterocope septentrionalis occurs in two distinct color morphs, dark red and pale green. The dark form tends to occur in shallow fishless ponds and the pale form in large, deep lakes with fish, Phototoxicity and fish predation experiments on the two morphs showed that the dark red form had better suwivorship in bright sunlight and the pale green form was less susceptible to predation by visually feeding fish. ‘Ihe red color is caused by a keto-carotenoid pigment. In lakes where predation presents a greater:hreat than sunlight the keto-carot-cnoid pigment is complexed with a protein to produce green Heierocope. Intense pigmentation of zooplankton has generally been thought to be non-adaptive in the presence of visually feed-ing vertebrate planktivores, since it is well established that large, easily visible zooplankton are preferentially fed upon by planktivorous fish and salamanders Text Arctic Zooplankton Alaska Unknown Arctic |
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ftciteseerx |
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English |
topic |
well investigated. Fox et al. (1951) and |
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well investigated. Fox et al. (1951) and Chris Luecke W. John O’brien Phototoxicity and fish predation: selective factors in color morphs |
topic_facet |
well investigated. Fox et al. (1951) and |
description |
In the Toolik Lake region of arctic Alaska, Heterocope septentrionalis occurs in two distinct color morphs, dark red and pale green. The dark form tends to occur in shallow fishless ponds and the pale form in large, deep lakes with fish, Phototoxicity and fish predation experiments on the two morphs showed that the dark red form had better suwivorship in bright sunlight and the pale green form was less susceptible to predation by visually feeding fish. ‘Ihe red color is caused by a keto-carotenoid pigment. In lakes where predation presents a greater:hreat than sunlight the keto-carot-cnoid pigment is complexed with a protein to produce green Heierocope. Intense pigmentation of zooplankton has generally been thought to be non-adaptive in the presence of visually feed-ing vertebrate planktivores, since it is well established that large, easily visible zooplankton are preferentially fed upon by planktivorous fish and salamanders |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Chris Luecke W. John O’brien |
author_facet |
Chris Luecke W. John O’brien |
author_sort |
Chris Luecke |
title |
Phototoxicity and fish predation: selective factors in color morphs |
title_short |
Phototoxicity and fish predation: selective factors in color morphs |
title_full |
Phototoxicity and fish predation: selective factors in color morphs |
title_fullStr |
Phototoxicity and fish predation: selective factors in color morphs |
title_full_unstemmed |
Phototoxicity and fish predation: selective factors in color morphs |
title_sort |
phototoxicity and fish predation: selective factors in color morphs |
publishDate |
1981 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.490.7782 http://www.aslo.org/lo/toc/vol_26/issue_3/0454.pdf |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Zooplankton Alaska |
genre_facet |
Arctic Zooplankton Alaska |
op_source |
http://www.aslo.org/lo/toc/vol_26/issue_3/0454.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.490.7782 http://www.aslo.org/lo/toc/vol_26/issue_3/0454.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766335056843898880 |