Journal article
HYBRIDIZATION AND POPULATION SUBDIVISION WITHIN AND BETWEEN ROSS'S GEESE AND LESSER SNOW GEESE: A MOLECULAR PERSPECTIVE
The Condor (Los Angeles, Calif.), v 104(2), pp 432-436
May 2002
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
We reanalyzed Quinn's (1992) mtDNA control region data set including new sequences from nine Lesser Snow Geese (Chen caerulescens caerulescens) and 10 Ross's Geese (Chen rossi) and found the same divergent lineages that Quinn (1992) attributed to vicariant separation of Lesser Snow Goose populations during the Pleistocene. However, peculiar patterns of mtDNA control region sequence variation, including a multimodal mismatch distribution of mtDNA sequences with two levels of population structuring and the sharing of two divergent haplotype lineages, are consistent with two hybridization episodes in Chen geese. Comparisons of mtDNA variation with historical and allozyme data sets compiled by Cooke et al. (1988) are consistent with the hypothesis that sharing of two mtDNA haplotype lineages between Ross's Goose and Lesser Snow Goose resulted from hybridization (Avise et al. 1992). Furthermore, population structure found within one haplotype cluster is consistent with Cooke et al.‘s (1988) hypothesis of past allopatry between blue and white Lesser Snow Geese. Hibridización y Subdivisión dentro y entre Poblaciones de Chen rossi y Chen caerulescens caerulescens: Una Perspectiva Molecular Resumen. Reanalizamos los datos de la región de control del ADN mitocondrial (ADNmt) de Quinn (1992), junto con nuevas secuencias de nueve individuos de la especie Chen caerulescens caerulescens y 10 de Chen rossi. Encontramos los mismos linajes divergentes que Quinn (1992) atribuyó a la separación vicariante de las poblaciones de C. c. caerulescens durante el Pleistoceno. Sin embargo, encontramos que las dos especies comparten dos linajes de haplotipos divergentes, y la distribución de “mismatch” en secuencias del ADNmt mostró multimodalidad con dos niveles de estructuración de la población. Estos patrones peculiares están de acuerdo con la hipótesis de que hubo dos episodios de hibridización en gansos del género Chen. Los datos históricos y de aloenzimas compilados por Cooke et al. (1988) también apoyan esta hipótesis (Avise et al. 1992). Además, la estructura de la población dentro de un grupo de haplotipos es consistente con la hipótesis de Cooke et al. (1988) acerca de la pasada alopatría entre los morfos azul y blanco de C. c. caerulescens.
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Details
- Title
- HYBRIDIZATION AND POPULATION SUBDIVISION WITHIN AND BETWEEN ROSS'S GEESE AND LESSER SNOW GEESE: A MOLECULAR PERSPECTIVE
- Creators
- Jason D Weckstein - Houston Museum of Natural ScienceAlan D Afton - Louisiana State UniversityRobert M Zink - University of MinnesotaRay T Alisauskas - Canadian Wildlife Service
- Publication Details
- The Condor (Los Angeles, Calif.), v 104(2), pp 432-436
- Number of pages
- 5
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Biodiversity, Earth, and Environmental Science (BEES)
- Web of Science ID
- WOS:000175402500020
- Scopus ID
- 2-s2.0-0036244214
- Other Identifier
- 991019350578304721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Ornithology