Abstract Phylogenetic investigations of Antarctic notothenioid
The Notothenioidei dominates the fish fauna of the Antarctic in both biomass and diversity. This clade exhibits adaptations related to metabolic function and freezing avoidance in the subzero Antarctic waters, and is characterized by a high degree of morphological and ecological diversity. Investiga...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.93.6799 2023-05-15T13:38:20+02:00 Abstract Phylogenetic investigations of Antarctic notothenioid Thomas J. Near James J. Pesavento Chi-hing C. Cheng B The Pennsylvania State University CiteSeerX Archives 2003 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.93.6799 http://www.life.uiuc.edu/ccheng/Near et al MPE2004.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.93.6799 http://www.life.uiuc.edu/ccheng/Near et al MPE2004.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.life.uiuc.edu/ccheng/Near et al MPE2004.pdf text 2003 ftciteseerx 2016-01-08T19:53:52Z The Notothenioidei dominates the fish fauna of the Antarctic in both biomass and diversity. This clade exhibits adaptations related to metabolic function and freezing avoidance in the subzero Antarctic waters, and is characterized by a high degree of morphological and ecological diversity. Investigating the macroevolutionary processes that may have contributed to the radiation of notothenioid fishes requires a well-resolved phylogenetic hypothesis. To date published molecular and morphological hypotheses of notothenioids are largely congruent, however, there are some areas of significant disagreement regarding higher-level relationships. Also, there are critical areas of the notothenioid phylogeny that are unresolved in both molecular and morphological phylogenetic analyses. Previous molecular phylogenetic analyses of notothenioids using partial mtDNA 12S and 16S rRNA sequence data have resulted in limited phylogenetic resolution and relatively low node support. One particularly controversial result from these analyses is the paraphyly of the Nototheniidae, the most diverse family in the Notothenioidei. It is unclear if the phylogenetic results from the 12S and 16S partial gene sequence dataset are due to limited character sampling, or if they reflect patterns of evolutionary diversification in notothenioids. We sequenced the complete mtDNA 16S rRNA gene for 43 notothenioid species, the largest sampling to-date from all eight taxonomically recognized families. Phylogenetic analyses using both maximum parsimony and maximum likelihood resulted in well-resolved trees with most nodes supported with high bootstrap pseudoreplicate scores and significant Bayesian posterior probabilities. In all analyses the Nototheniidae was monophyletic. Shimodaira–Hasegawa tests were able to reject two hypotheses that resulted from Text Antarc* Antarctic Unknown Antarctic The Antarctic |
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The Notothenioidei dominates the fish fauna of the Antarctic in both biomass and diversity. This clade exhibits adaptations related to metabolic function and freezing avoidance in the subzero Antarctic waters, and is characterized by a high degree of morphological and ecological diversity. Investigating the macroevolutionary processes that may have contributed to the radiation of notothenioid fishes requires a well-resolved phylogenetic hypothesis. To date published molecular and morphological hypotheses of notothenioids are largely congruent, however, there are some areas of significant disagreement regarding higher-level relationships. Also, there are critical areas of the notothenioid phylogeny that are unresolved in both molecular and morphological phylogenetic analyses. Previous molecular phylogenetic analyses of notothenioids using partial mtDNA 12S and 16S rRNA sequence data have resulted in limited phylogenetic resolution and relatively low node support. One particularly controversial result from these analyses is the paraphyly of the Nototheniidae, the most diverse family in the Notothenioidei. It is unclear if the phylogenetic results from the 12S and 16S partial gene sequence dataset are due to limited character sampling, or if they reflect patterns of evolutionary diversification in notothenioids. We sequenced the complete mtDNA 16S rRNA gene for 43 notothenioid species, the largest sampling to-date from all eight taxonomically recognized families. Phylogenetic analyses using both maximum parsimony and maximum likelihood resulted in well-resolved trees with most nodes supported with high bootstrap pseudoreplicate scores and significant Bayesian posterior probabilities. In all analyses the Nototheniidae was monophyletic. Shimodaira–Hasegawa tests were able to reject two hypotheses that resulted from |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Thomas J. Near James J. Pesavento Chi-hing C. Cheng B |
spellingShingle |
Thomas J. Near James J. Pesavento Chi-hing C. Cheng B Abstract Phylogenetic investigations of Antarctic notothenioid |
author_facet |
Thomas J. Near James J. Pesavento Chi-hing C. Cheng B |
author_sort |
Thomas J. Near |
title |
Abstract Phylogenetic investigations of Antarctic notothenioid |
title_short |
Abstract Phylogenetic investigations of Antarctic notothenioid |
title_full |
Abstract Phylogenetic investigations of Antarctic notothenioid |
title_fullStr |
Abstract Phylogenetic investigations of Antarctic notothenioid |
title_full_unstemmed |
Abstract Phylogenetic investigations of Antarctic notothenioid |
title_sort |
abstract phylogenetic investigations of antarctic notothenioid |
publishDate |
2003 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.93.6799 http://www.life.uiuc.edu/ccheng/Near et al MPE2004.pdf |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
http://www.life.uiuc.edu/ccheng/Near et al MPE2004.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.93.6799 http://www.life.uiuc.edu/ccheng/Near et al MPE2004.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766104209735811072 |