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Cradles and museums of Antarctic teleost biodiversity

Dornburg, Alex ; Federman, Sarah ; Lamb, April D ; Jones, Christopher D ; Near, Thomas J

Nature ecology & evolution, 2017-09, Vol.1 (9), p.1379-1384 [Periódico revisado por pares]

England: Nature Publishing Group

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Título:
Cradles and museums of Antarctic teleost biodiversity
Autor: Dornburg, Alex ; Federman, Sarah ; Lamb, April D ; Jones, Christopher D ; Near, Thomas J
Assuntos: Animals ; Antarctic Regions ; Archipelagoes ; Atmospheric models ; Biodiversity ; Biogeography ; Biological Evolution ; Climate Change ; Climate models ; Colonization ; DNA, Mitochondrial - genetics ; Evolution ; Exons - genetics ; Fish ; Fishes - classification ; Fishes - physiology ; Introns - genetics ; Latitude ; Marine animals ; Marine environment ; Marine fauna ; Museums ; New species ; Phylogenetics ; Phylogeny ; Polar environments ; Regional development ; Sequence Analysis, DNA ; Species diversity
É parte de: Nature ecology & evolution, 2017-09, Vol.1 (9), p.1379-1384
Notas: ObjectType-Article-1
SourceType-Scholarly Journals-1
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Descrição: Isolated in one of the most extreme marine environments on Earth, teleost fish diversity in Antarctica's Southern Ocean is dominated by one lineage: the notothenioids. Throughout the past century, the long-term persistence of this unique marine fauna has become increasingly threatened by regional atmospheric and, to a lesser extent oceanic, warming. Developing an understanding of how historical temperature shifts have shaped source-sink dynamics for Antarctica's teleost lineages provides critical insight for predicting future demographic responses to climate change. We use a combination of phylogenetic and biogeographic modelling to show that high-latitude Antarctic nearshore habitats have been an evolutionary sink for notothenioid species diversity. Contrary to expectations from island biogeographic theory, lower latitude regions of the Southern Ocean that include the northern Antarctic Peninsula and peripheral island archipelagos act as source areas to continental diversity. These peripheral areas facilitate both the generation of new species and repeated colonization of nearshore Antarctic continental regions. Our results provide historical context to contemporary trends of global climate change that threaten to invert these evolutionary dynamics.
Editor: England: Nature Publishing Group
Idioma: Inglês

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Cradles and museums of Antarctic teleost biodiversity

Dornburg, Alex ; Federman, Sarah ; Lamb, April D ; Jones, Christopher D ; Near, Thomas J

England: Nature Publishing Group

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