Genetic guppy

2008

Zoological Science, 1999

在美国国内的孔雀鱼基因的选择一直依赖这性别连锁基因。Y基因是决定花纹, 而色彩模式是由X基因所决定。在过去的几十年中较大比例的品系的表型组合（尤其是那些由亚洲和欧洲的饲养者所创建的）是基于常染色体基因或性连锁和常染色体基因的共表达产生。此次演讲文稿，是帮助孔雀鱼玩家认识常染色体显性基因及了解它们的相互作用和其他基因的结合。国内基因的发展，不像大自然界野生动物那样, 弱肉强食, 适者生存，它们会受到育种选择和保留。这些演讲结果是基于45年的养殖经验，其中有30年透过其他专业育种者的努力, 科学根据, 一直致力于剑尾孔雀鱼的保存。 The selection for genes in Domestic Guppies has long been heavily based on sex-linked genes. In particular Y-linked for pattern and X-linked for color. Over the last several decades a larger percentage of strains and phenotyes (especially those created by Asian and European breeders) have been produced based on autosomal genes or co-expression of sex-linked and autosomal genes. The attempt of this presentation is to help breeders gain not only an understanding of autosomal genes, but their interactions in combination(s) and with other genes. The development of domestic genes, unlike wild counterparts subject to predation, is only hindered by breeder selection and retention. Results based on 45 years breeding Page2 experience of which nearly thirty (30) years have been devoted to strains collectively known as " Swordtail Guppies " , efforts of other professional breeders, and that of the scientific community are presented.

Abstract. The selection for genes in Domestic Guppies has long been heavily based on sex-linked genes. In particular Y-linked for pattern and X-linked for color. Over the last several decades a larger percentage of strains and phenotypes (especially those created by Asian and European breeders) have been produced based on autosomal genes or co-expression of sex-linked and autosomal genes. The attempt of this presentation is to help breeders gain not only an understanding of autosomal genes, but their interactions in combination(s) and with other genes. The development of domestic genes, unlike wild counterparts subject to predation, is only hindered by breeder selection and retention. Results based on 45 years breeding experience of which nearly thirty (30) years have been devoted to strains collectively known as “Swordtail Guppies”, efforts of other professional breeders, and that of the scientific community are presented.

2009

Zusammenfassung: Reziproke Verpaarungen vier verschiedener spezifisch gefärbter domestizierter Guppy-Stämme (Caeruleus, Maculatus, Lutino, Metallicus/Pink) mit Stämmen bekannten Erbgangs (Pauper/ Grau, Maculatus/Grau, Albino, Gold) ergaben, dass diese Farben auf fünf Farbgenen beruhen, von denen drei autosomal-rezessiv vererbt (Lutino, Pink, Metallicus) und zwei (Moscow, Caeruleus) vom Y-Chromosom kodiert werden.

Zoological Science, 1999

Zoological Science, 1999

Journal of Evolutionary Biology, 2007

Proceedings of the National Academy of Sciences

It is often stated that polymorphisms for mutations affecting fitness of males and females in opposite directions [sexually antagonistic (SA) polymorphisms] are the main selective force for the evolution of recombination suppression between sex chromosomes. However, empirical evidence to discriminate between different hypotheses is difficult to obtain. We report genetic mapping results in laboratory-raised families of the guppy (Poecilia reticulata), a sexually dimorphic fish with SA polymorphisms for male coloration genes, mostly on the sex chromosomes. Comparison of the genetic and physical maps shows that crossovers are distributed very differently in the two sexes (heterochiasmy); in male meiosis, they are restricted to the termini of all four chromosomes studied, including chromosome 12, which carries the sex-determining locus. Genome resequencing of male and female guppies from a population also indicates sex linkage of variants across almost the entire chromosome 12. More tha...

Evolution, 2012