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The Genome of the Trinidadian Guppy, Poecilia reticulata, and Variation in the Guanapo Population

Please always quote using this URN: urn:nbn:de:bvb:20-opus-166755
  • 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 aFor 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.show moreshow less

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Metadaten
Author: Axel Künstner, Margarete Hoffmann, Bonnie A. Fraser, Verena A. Kottler, Eshita Sharma, Detlef Weigel, Christine Dreyer
URN:urn:nbn:de:bvb:20-opus-166755
Document Type:Journal article
Faculties:Fakultät für Biologie / Theodor-Boveri-Institut für Biowissenschaften
Language:English
Parent Title (English):PLoS ONE
Year of Completion:2016
Volume:11
Issue:12
Pagenumber:e0169087
Source:PLoS ONE 11(12):e0169087 (2016). DOI: 10.1371/journal.pone.0169087
DOI:https://doi.org/10.1371/journal.pone.0169087
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 57 Biowissenschaften; Biologie / 576 Genetik und Evolution
Tag:Poecilia reticulata; Trinidadian guppy; genetics
Release Date:2019/07/11
Licence (German):License LogoCC BY: Creative-Commons-Lizenz: Namensnennung 4.0 International