| Population growth confounds phylogeographic inference in Namaqua sandgrouse. | |
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MedLine Citation:
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PMID: 17158463 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The Namaqua sandgrouse, Pterocles namaqua, is a highly nomadic granivore of semiarid to arid habitats. As a result of nomadic movements in response to rainfall, the size of the breeding population in any one area fluctuates dramatically between breeding seasons. This high mobility in response to spatial and temporal abundance of food resources is expected to result in little population genetic structuring. Namaqua sandgrouse also shows a seasonally predictable partial migration between the southeast and northwest regions of South Africa, and a further possible north-south migration between southwestern South Africa and central Namibia. It is unclear whether birds migrating between these regions breed in only one or both regions. If populations breed in only one region of their migratory range, then population genetic structuring is predicted to occur. This study addresses Namaqua sandgrouse movements with the analysis of mitochondrial DNA control region sequences. In general, little population genetic structure was evident, yet strong signals of population growth were detected. Several populations have private alleles, which is in direct contradiction to the spatial genetic pattern expected under high levels of gene flow. We suggest that the inference of high levels of female gene flow could be an artifact of population growth and that additional loci will allow a greater understanding of Namaqua sandgrouse movements. |
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Authors:
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Wayne Delport; Timothy M Crowe; Penn Lloyd; Paulette Bloomer |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2006-12-07 |
Journal Detail:
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Title: The Journal of heredity Volume: 98 ISSN: 0022-1503 ISO Abbreviation: J. Hered. Publication Date: 2007 Mar-Apr |
Date Detail:
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Created Date: 2007-04-26 Completed Date: 2007-06-19 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0375373 Medline TA: J Hered Country: United States |
Other Details:
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Languages: eng Pagination: 158-64 Citation Subset: IM |
Affiliation:
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DST-NRF Centre of Excellence at the Percy FitzPatrick Institute, Molecular Ecology and Evolution Programme, Department of Genetics, University of Pretoria, Pretoria, South Africa. wdelport@botzoo.uct.ac.za |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Animals Birds / genetics* DNA, Mitochondrial / genetics Ecosystem Female Namibia Population Dynamics Population Growth South Africa |
| Chemical | |
Reg. No./Substance:
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0/DNA, Mitochondrial |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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