| Evolution of the army ant syndrome: the origin and long-term evolutionary stasis of a complex of behavioral and reproductive adaptations. | |
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MedLine Citation:
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PMID: 12750466 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The army ant syndrome of behavioral and reproductive traits (obligate collective foraging, nomadism, and highly specialized queens) has allowed these organisms to become the premiere social hunters of the tropics, yet we know little about how or why these strategies evolved. The currently accepted view holds that army ants evolved multiple times on separate continents. I generated data from three nuclear genes, a mitochondrial gene, and morphology to test this hypothesis. Results strongly indicate that the suite of behavioral and reproductive adaptations found in army ants throughout the world is inherited from a unique common ancestor, and did not evolve convergently in the New World and Old World as previously thought. New Bayesian methodology for dating the antiquity of lineages by using a combination of fossil and molecular information places the origin of army ants in the mid-Cretaceous, consistent with a Gondwanan origin. Because no known army ant species lacks any component of the army ant syndrome, this group represents an extraordinary case of long-term evolutionary stasis in these adaptations. |
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Authors:
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Seán G Brady |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S. Date: 2003-05-15 |
Journal Detail:
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Title: Proceedings of the National Academy of Sciences of the United States of America Volume: 100 ISSN: 0027-8424 ISO Abbreviation: Proc. Natl. Acad. Sci. U.S.A. Publication Date: 2003 May |
Date Detail:
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Created Date: 2003-05-28 Completed Date: 2003-07-16 Revised Date: 2009-11-18 |
Medline Journal Info:
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Nlm Unique ID: 7505876 Medline TA: Proc Natl Acad Sci U S A Country: United States |
Other Details:
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Languages: eng Pagination: 6575-9 Citation Subset: IM |
Affiliation:
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Center for Population Biology and Department of Entomology, University of California, Davis 95616, USA. sb323@cornell.edu |
| Data Bank Information | |
Bank Name/Acc. No.:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adaptation, Physiological* Animals Ants / genetics*, physiology* Behavior, Animal* Evolution* Molecular Sequence Data Reproduction / physiology* |
| Comments/Corrections | |
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