Triploid Plover Female Provides Support for a Role of the W Chromosome in Avian Sex Determination

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Triploid Plover Female Provides Support for a Role of the W Chromosome in Avian Sex Determination

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Title: Triploid Plover Female Provides Support for a Role of the W Chromosome in Avian Sex Determination
Author: Küpper, Clemens; Augustin, Jakob; Edwards, Scott V.; Székely, Tamás; Kosztolányi, András; Burke, Terry; Janes, Daniel E.

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Citation: Küpper, Clemens, Jakob Augustin, Scott V. Edwards, Tamás Székely, András Kosztolányi, Terry Burke, and Daniel E. Janes. 2012. “Triploid plover female provides support for a role of the W chromosome in avian sex determination.” Biology Letters 8 (5) (September 11): 787-789. doi:10.1098/rsbl.2012.0329. http://dx.doi.org/10.1098/rsbl.2012.0329.
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Abstract: Two models, Z Dosage and Dominant W, have been proposed to explain sex determination in birds, in which males are characterized by the presence of two Z chromosomes, and females are hemizygous with a Z and a W chromosome. According to the Z Dosage model, high dosage of a Z-linked gene triggers male development, whereas the Dominant W model postulates that a still unknown W-linked gene triggers female development. Using 33 polymorphic microsatellite markers, we describe a female triploid Kentish plover Charadrius alexandrinus identified by characteristic triallelic genotypes at 14 autosomal markers that produced viable diploid offspring. Chromatogram analysis showed that the sex chromosome composition of this female was ZZW. Together with two previously described ZZW female birds, our results suggest a prominent role for a female determining gene on the W chromosome. These results imply that avian sex determination is more dynamic and complex than currently envisioned.
Published Version: doi:10.1098/rsbl.2012.0329
Other Sources: http://www.ncbi.nlm.nih.gov/pubmed/22647929
Terms of Use: This article is made available under the terms and conditions applicable to Open Access Policy Articles, as set forth at http://nrs.harvard.edu/urn-3:HUL.InstRepos:dash.current.terms-of-use#OAP
Citable link to this page: http://nrs.harvard.edu/urn-3:HUL.InstRepos:11688782
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