TY  - JOUR
A1  - Kottler, Verena A.
A1  - Schartl, Manfred
T1  - The colorful sex chromosomes of teleost fish
JF  - Genes
N2  - Teleost fish provide some of the most intriguing examples of sexually dimorphic coloration, which is often advantageous for only one of the sexes. Mapping studies demonstrated that the genetic loci underlying such color patterns are frequently in tight linkage to the sex-determining locus of a species, ensuring sex-specific expression of the corresponding trait. Several genes affecting color synthesis and pigment cell development have been previously described, but the color loci on the sex chromosomes have mostly remained elusive as yet. Here, we summarize the current knowledge about the genetics of such color loci in teleosts, mainly from studies on poeciliids and cichlids. Further studies on these color loci will certainly provide important insights into the evolution of sex chromosomes.
KW  - teleost fish
KW  - sex chromosomes
KW  - coloration
KW  - pigment pattern
KW  - sexual conflict
KW  - sexually antagonistic genes
Y1  - 2018
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-176587
VL  - 9
IS  - 5
ER  - 
TY  - JOUR
A1  - Künstner, Axel
A1  - Hoffmann, Margarete
A1  - Fraser, Bonnie A.
A1  - Kottler, Verena A.
A1  - Sharma, Eshita
A1  - Weigel, Detlef
A1  - Dreyer, Christine
T1  - The Genome of the Trinidadian Guppy, Poecilia reticulata, and Variation in the Guanapo Population
JF  - PLoS ONE
N2  - For over a century, the live bearing guppy, Poecilia reticulata, has been used to study sexual selection as well as local adaptation. Natural guppy populations differ in many traits that are of intuitively adaptive significance such as ornamentation, age at maturity, brood size and body shape. Water depth, light supply, food resources and predation regime shape these traits, and barrier waterfalls often separate contrasting environments in the same river. We have assembled and annotated the genome of an inbred single female from a high-predation site in the Guanapo drainage. The final assembly comprises 731.6 Mb with a scaffold N50 of 5.3 MB. Scaffolds were mapped to linkage groups, placing 95% of the genome assembly on the 22 autosomes and the X-chromosome. To investigate genetic variation in the population used for the genome assembly, we sequenced 10 wild caught male individuals. The identified 5 million SNPs correspond to an average nucleotide diversity (π) of 0.0025. The genome assembly and SNP map provide a rich resource for investigating adaptation to different predation regimes. In addition, comparisons with the genomes of other Poeciliid species, which differ greatly in mechanisms of sex determination and maternal resource allocation, as well as comparisons to other teleost genera can begin to reveal how live bearing evolved in teleost fish.
KW  - Trinidadian guppy
KW  - Poecilia reticulata
KW  - genetics
Y1  - 2016
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-166755
VL  - 11
IS  - 12
ER  -