Ancient DNA provides new insights into the evolutionary history of New Zealand's extinct giant eagle
Prior to human settlement 700 years ago New Zealand had no terrestrial mammals--apart from three species of bats--instead, approximately 250 avian species dominated the ecosystem. At the top of the food chain was the extinct Haast's eagle, Harpagornis moorei. H. moorei (10-15 kg; 2-3 m wingspan...
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description | Prior to human settlement 700 years ago New Zealand had no terrestrial mammals--apart from three species of bats--instead, approximately 250 avian species dominated the ecosystem. At the top of the food chain was the extinct Haast's eagle, Harpagornis moorei. H. moorei (10-15 kg; 2-3 m wingspan) was 30%-40% heavier than the largest extant eagle (the harpy eagle, Harpia harpyja), and hunted moa up to 15 times its weight. In a dramatic example of morphological plasticity and rapid size increase, we show that the H. moorei was very closely related to one of the world's smallest extant eagles, which is one-tenth its mass. This spectacular evolutionary change illustrates the potential speed of size alteration within lineages of vertebrates, especially in island ecosystems. |
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At the top of the food chain was the extinct Haast's eagle, Harpagornis moorei. H. moorei (10-15 kg; 2-3 m wingspan) was 30%-40% heavier than the largest extant eagle (the harpy eagle, Harpia harpyja), and hunted moa up to 15 times its weight. In a dramatic example of morphological plasticity and rapid size increase, we show that the H. moorei was very closely related to one of the world's smallest extant eagles, which is one-tenth its mass. This spectacular evolutionary change illustrates the potential speed of size alteration within lineages of vertebrates, especially in island ecosystems.</description><identifier>ISSN: 1545-7885</identifier><identifier>ISSN: 1544-9173</identifier><identifier>EISSN: 1545-7885</identifier><identifier>DOI: 10.1371/journal.pbio.0030009</identifier><identifier>PMID: 15660162</identifier><language>eng</language><publisher>United States: Public Library of Science</publisher><subject>Animals ; Birds ; Body Size ; Deoxyribonucleic acid ; DNA ; DNA - genetics ; Eagles - anatomy & histology ; Eagles - classification ; Eagles - genetics ; Ecology ; Ecosystem ; Estimates ; Evolution ; Evolution, Molecular ; Fossils ; Molecular Sequence Data ; Museums ; New Zealand ; Paleontology - methods ; Phylogenetics ; Zoology</subject><ispartof>PLoS biology, 2005-01, Vol.3 (1), p.e9-e9</ispartof><rights>2005 Bunce et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Citation: Bunce M, Szulkin M, Lerner HRL, Barnes I, Shapiro B, et al. (2005) Ancient DNA Provides New Insights into the Evolutionary History of New Zealand's Extinct Giant Eagle. 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subjects | Animals Birds Body Size Deoxyribonucleic acid DNA DNA - genetics Eagles - anatomy & histology Eagles - classification Eagles - genetics Ecology Ecosystem Estimates Evolution Evolution, Molecular Fossils Molecular Sequence Data Museums New Zealand Paleontology - methods Phylogenetics Zoology |
title | Ancient DNA provides new insights into the evolutionary history of New Zealand's extinct giant eagle |
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