Sex determination diversity and sex chromosome evolution in poeciliid fish in Sacramento

Publication types Research Support, Non-U. Gov't Review. Initial analysis revealed a high plasticity of the sex-determining region and the absence of synteny with other fish and vertebrate sex chromosomes, indicating an independent evolutionary origin.

Abstract Poeciliids, a family of live-bearing freshwater fish, including among others platyfish, swordtails and guppies, fully illustrate the diversity of genetic sex determination mechanisms observed in teleosts. For one species, the Southern platyfish Xiphophorus maculatus, positional cloning of the master sex-determining gene has been initiated through the construction and sequencing of bacterial artificial chromosome contigs covering the region differentiating the X from the Y chromosome.

Poeciliids, a family of live-bearing freshwater fish, including among others platyfish, swordtails and guppies, fully illustrate the diversity of genetic sex determination mechanisms observed in teleosts.

Due to the presence of different mechanisms in closely related species or even between populations within a same species, poeciliids are a very attractive model to study the evolutionary dynamics of sex determination. For one species, the Southern platyfish Xiphophorus maculatus, positional cloning of the master sex-determining gene has been initiated through the construction and sequencing of bacterial artificial chromosome contigs covering the region differentiating the X from the Y chromosome.

Abstract Poeciliids, a family of live-bearing freshwater fish, including among others platyfish, swordtails and guppies, fully illustrate the diversity of genetic sex determination mechanisms observed in teleosts. Initial analysis revealed a high plasticity of the sex-determining region and the absence of synteny with other fish and vertebrate sex chromosomes, indicating an independent evolutionary origin.

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Zander, C. Dmrt1 is upregulated in the gonads during female-to-male sex reversal in ZW chicken embryos. Beloniformes and Cyprinodontiformes are considered sister groups, while Atheriniformes occupies a basal position Parenti, ; Nelson, ; Setiamarga et al. Identification of the master sex determining gene in Northern pike Esox lucius reveals restricted sex chromosome differentiation.

Petry, P. Europe PMC requires Javascript to function effectively. Mol Ecol28 2110 Oct Dev Biol.

For one species, the Southern platyfish Xiphophorus maculatus, positional cloning of the master sex-determining gene has been initiated through the construction and sequencing of bacterial artificial chromosome contigs covering the region differentiating the X from the Y chromosome. Abstract Poeciliids, a family of live-bearing freshwater fish, including among others platyfish, swordtails and guppies, fully illustrate the diversity of genetic sex determination mechanisms observed in teleosts.

Gov't Review. Initial analysis revealed a high plasticity of the sex-determining region and the absence of synteny with other fish and vertebrate sex chromosomes, indicating an independent evolutionary origin. Due to the presence of different mechanisms in closely related species or even between populations within a same species, poeciliids are a very attractive model to study the evolutionary dynamics of sex determination.

Sex determination diversity and sex chromosome evolution in poeciliid fish in Sacramento

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