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Genetic analysis of hybridization and introgression between wild mongoose and brown lemurs
- Source :
- BMC Evolutionary Biology, Vol 9, Iss 1, p 32 (2009), ResearcherID, BMC Evolutionary Biology
- Publication Year :
- 2009
- Publisher :
- BMC, 2009.
-
Abstract
- Background Hybrid zones generally represent areas of secondary contact after speciation. The nature of the interaction between genes of individuals in a hybrid zone is of interest in the study of evolutionary processes. In this study, data from nuclear microsatellites and mitochondrial DNA sequences were used to genetically characterize hybridization between wild mongoose lemurs (Eulemur mongoz) and brown lemurs (E. fulvus) at Anjamena in west Madagascar. Results Two segments of mtDNA have been sequenced and 12 microsatellite loci screened in 162 brown lemurs and mongoose lemurs. Among the mongoose lemur population at Anjamena, we identified two F1 hybrids (one also having the mtDNA haplotype of E. fulvus) and six other individuals with putative introgressed alleles in their genotype. Principal component analysis groups both hybrids as intermediate between E. mongoz and E. fulvus and admixture analyses revealed an admixed genotype for both animals. Paternity testing proved one F1 hybrid to be fertile. Of the eight brown lemurs genotyped, all have either putative introgressed microsatellite alleles and/or the mtDNA haplotype of E. mongoz. Conclusion Introgression is bidirectional for the two species, with an indication that it is more frequent in brown lemurs than in mongoose lemurs. We conclude that this hybridization occurs because mongoose lemurs have expanded their range relatively recently. Introgressive hybridization may play an important role in the unique lemur radiation, as has already been shown in other rapidly evolving animals.
- Subjects :
- Genotype
Evolution
Population
Introgression
Lemur
Lemur catta
DNA, Mitochondrial
Evolution, Molecular
Hybrid zone
Species Specificity
biology.animal
Madagascar
QH359-425
Animals
education
Alleles
Phylogeny
Ecology, Evolution, Behavior and Systematics
Principal Component Analysis
education.field_of_study
Polymorphism, Genetic
biology
Mongoose lemur
Haplotype
Sequence Analysis, DNA
biology.organism_classification
Mongoose
Genetics, Population
Haplotypes
Evolutionary biology
Hybridization, Genetic
Sequence Alignment
Microsatellite Repeats
Research Article
Subjects
Details
- Language :
- English
- ISSN :
- 14712148
- Volume :
- 9
- Issue :
- 1
- Database :
- OpenAIRE
- Journal :
- BMC Evolutionary Biology
- Accession number :
- edsair.doi.dedup.....ab8f4abd6af72636f5bba0858d63fd98