title: Genetic linkage map of the guppy, Poecilia reticulata, and quantitative trait loci analysis of male size and colour variation.
abstract: We report construction of a genetic linkage map of the guppy genome using 790 single nucleotide polymorphism markers, integrated from six mapping crosses. The markers define 23 linkage groups (LGs), corresponding to the known haploid number of guppy chromosomes. The map, which spans a genetic length of 899 cM, includes 276 markers linked to expressed genes (expressed sequence tag), which have been used to derive broad syntenic relationships of guppy LGs with medaka chromosomes. This combined linkage map should facilitate the advancement of genetic studies for a wide variety of complex adaptive phenotypes relevant to natural and sexual selection in this species. We have used the linkage data to predict quantitative trait loci for a set of variable male traits including size and colour pattern. Contributing loci map to the sex LG for many of these traits.
authors.affiliation: Department of Molecular Biology, Max Plank Institute for Developmental Biology, 72076 Tübingen, Germany.
authors.forename: Namita
authors.initials: N
authors.lastname: Tripathi
authors.forename: Margarete
authors.initials: M
authors.lastname: Hoffmann
authors.forename: Eva-Maria
authors.initials: EM
authors.lastname: Willing
authors.forename: Christa
authors.initials: C
authors.lastname: Lanz
authors.forename: Detlef
authors.initials: D
authors.lastname: Weigel
authors.forename: Christine
authors.initials: C
authors.lastname: Dreyer