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    Brain transcriptome of the violet-eared waxbill and recent evolution in the songbird genome

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    rsob-3-130063.PMC3787746.pdf (945.7Kb)

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    Author
    Balakrishnan, Christopher N.; Chapus, Charles; Brewer, Michael S.; Clayton, David F.
    Abstract
    Songbirds are important models for the study of social behaviour and communication. To complement the recent genome sequencing of the domesticated zebra finch, we sequenced the brain transcriptome of a closely related songbird species, the violet-eared waxbill (Uraeginthus granatina). Both the zebra finch and violet-eared waxbill are members of the family Estrildidae, but differ markedly in their social behaviour. Using Roche 454 RNA sequencing, we generated an assembly and annotation of 11 084 waxbill orthologues of 17 475 zebra finch genes (64%), with an average transcript length of 1555 bp. We also identified 5985 single nucleotide polymorphisms (SNPs) of potential utility for future population genomic studies. Comparing the two species, we found evidence for rapid protein evolution (ω) and low polymorphism of the avian Z sex chromosome, consistent with prior studies of more divergent avian species. An intriguing outlier was putative chromosome 4A, which showed a high density of SNPs and low evolutionary rate relative to other chromosomes. Genome-wide ω was identical in zebra finch and violet-eared waxbill lineages, suggesting a similar demographic history with efficient purifying natural selection. Further comparisons of these and other estrildid finches may provide insights into the evolutionary neurogenomics of social behaviour.
    URI
    http://hdl.handle.net/10342/5477
    Subject
     aggression; genome; positive selection; sex chromosome; social behaviour; zebra finch 
    Date
    2013-09
    Citation:
    APA:
    Balakrishnan, Christopher N., & Chapus, Charles, & Brewer, Michael S., & Clayton, David F.. (September 2013). Brain transcriptome of the violet-eared waxbill and recent evolution in the songbird genome. Open Biology, (3:9), p.1-12. Retrieved from http://hdl.handle.net/10342/5477

    Display/Hide MLA, Chicago and APA citation formats.

    MLA:
    Balakrishnan, Christopher N., and Chapus, Charles, and Brewer, Michael S., and Clayton, David F.. "Brain transcriptome of the violet-eared waxbill and recent evolution in the songbird genome". Open Biology. 3:9. (1-12.), September 2013. August 17, 2022. http://hdl.handle.net/10342/5477.
    Chicago:
    Balakrishnan, Christopher N. and Chapus, Charles and Brewer, Michael S. and Clayton, David F., "Brain transcriptome of the violet-eared waxbill and recent evolution in the songbird genome," Open Biology 3, no. 9 (September 2013), http://hdl.handle.net/10342/5477 (accessed August 17, 2022).
    AMA:
    Balakrishnan, Christopher N., Chapus, Charles, Brewer, Michael S., Clayton, David F.. Brain transcriptome of the violet-eared waxbill and recent evolution in the songbird genome. Open Biology. September 2013; 3(9) 1-12. http://hdl.handle.net/10342/5477. Accessed August 17, 2022.
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