Postzygotic genetic incompatibility between sympatric color morphs
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Pryke, Sarah; Griffith, Simon C.
Description
Alternative genetically determined color morphs within a population or species are believed to successfully interbreed within a population. However, the occurrence of prezygotic or ecological selection in a number of polymorphic systems may lead to nonrandom mating and prevent genetic morphs from fully interbreeding. Here we show that postzygotic incompatibility significantly limits gene flow between the sympatric red and black color morphs of the Gouldian finch (Erythrura gouldiae). Using a...[Show more]
dc.contributor.author | Pryke, Sarah | |
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dc.contributor.author | Griffith, Simon C. | |
dc.date.accessioned | 2015-12-13T22:45:28Z | |
dc.identifier.issn | 0014-3820 | |
dc.identifier.uri | http://hdl.handle.net/1885/79796 | |
dc.description.abstract | Alternative genetically determined color morphs within a population or species are believed to successfully interbreed within a population. However, the occurrence of prezygotic or ecological selection in a number of polymorphic systems may lead to nonrandom mating and prevent genetic morphs from fully interbreeding. Here we show that postzygotic incompatibility significantly limits gene flow between the sympatric red and black color morphs of the Gouldian finch (Erythrura gouldiae). Using a balanced within-female experimental design, in which individuals were forced to breed in pure and mixed morph crosses, we found large inviability effects (>30%) in offspring resulting from genetically mixed genotypes. The consistent mortality effects across different stages of development (e.g., prehatching, juvenile, adulthood), unconfounded by environmentally derived parental effects or social environments, reveal an underlying genetic incompatibility between different genotypes. Furthermore, mortality in mixed morph genotypes was particularly severe (43.6%) for the heterogametic sex (daughters), which is consistent with Haldane's rule predicted for postzygotic incompatibilities between hybridizing species. This significant, but incomplete, postzygotic isolation suggests that the sympatric morphs may represent transient stages in the speciation-hybridization process. | |
dc.publisher | Society for the Study of Evolution | |
dc.source | Evolution | |
dc.subject | Keywords: assortative mating; color morph; experimental design; genotype; hybrid; mortality; passerine; reproductive isolation; sympatry; animal; article; Australia; classification; female; finch; genetics; histology; male; pigmentation; population genetics; Animal Assortative mating; Color polymorphism; Gouldian finch; Postzygotic incompatibility; Reproductive isolation | |
dc.title | Postzygotic genetic incompatibility between sympatric color morphs | |
dc.type | Journal article | |
local.description.notes | Imported from ARIES | |
local.identifier.citationvolume | 63 | |
dc.date.issued | 2009 | |
local.identifier.absfor | 060201 - Behavioural Ecology | |
local.identifier.ariespublication | f5625xPUB8174 | |
local.type.status | Published Version | |
local.contributor.affiliation | Pryke, Sarah, College of Medicine, Biology and Environment, ANU | |
local.contributor.affiliation | Griffith, Simon C., Macquarie University | |
local.description.embargo | 2037-12-31 | |
local.bibliographicCitation.issue | 3 | |
local.bibliographicCitation.startpage | 793 | |
local.bibliographicCitation.lastpage | 798 | |
local.identifier.doi | 10.1111/j.1558-5646.2008.00584.x | |
local.identifier.absseo | 970106 - Expanding Knowledge in the Biological Sciences | |
dc.date.updated | 2016-02-24T09:40:16Z | |
local.identifier.scopusID | 2-s2.0-60849122823 | |
local.identifier.thomsonID | 000263679800019 | |
Collections | ANU Research Publications |
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