Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Shared and Species-Specific Patterns of Nascent Y Chromosome Evolution in Two Guppy Species
UCL, Dept Genet Evolut & Environm, London WC1E 6BT, England.ORCID iD: 0000-0002-0137-2610
UCL, Dept Genet Evolut & Environm, London WC1E 6BT, England.
UCL, Dept Genet Evolut & Environm, London WC1E 6BT, England.
Univ Sheffield, Dept Anim & Plant Sci, Sheffield S10 2TN, S Yorkshire, England.
Show others and affiliations
2018 (English)In: Genes, ISSN 2073-4425, E-ISSN 2073-4425, Vol. 9, no 5, article id 238Article in journal (Refereed) Published
Abstract [en]

Sex chromosomes form once recombination is halted around the sex-determining locus between a homologous pair of chromosomes, resulting in a male-limited Y chromosome. We recently characterized the nascent sex chromosome system in the Trinidadian guppy (Poecilia reticulata). The guppy Y is one of the youngest animal sex chromosomes yet identified, and therefore offers a unique window into the early evolutionary forces shaping sex chromosome formation, particularly the rate of accumulation of repetitive elements and Y-specific sequence. We used comparisons between male and female genomes in P. reticulata and its sister species, Endler's guppy (P. wingei), which share an ancestral sex chromosome, to identify male-specific sequences and to characterize the degree of differentiation between the X and Y chromosomes. We identified male-specific sequence shared between P. reticulata and P. wingei consistent with a small ancestral non-recombining region. Our assembly of this Y-specific sequence shows substantial homology to the X chromosome, and appears to be significantly enriched for genes implicated in pigmentation. We also found two plausible candidates that may be involved in sex determination. Furthermore, we found that the P. wingei Y chromosome exhibits a greater signature of repetitive element accumulation than the P. reticulata Y chromosome. This suggests that Y chromosome divergence does not necessarily correlate with the time since recombination suppression. Overall, our results reveal the early stages of Y chromosome divergence in the guppy.

Place, publisher, year, edition, pages
MDPI , 2018. Vol. 9, no 5, article id 238
Keywords [en]
sex chromosomes, Y-chromosome, heterochromatin, Poecilia, guppies, sex determination, pigmentation
National Category
Genetics
Identifiers
URN: urn:nbn:se:uu:diva-358557DOI: 10.3390/genes9050238ISI: 000435194100013PubMedID: 29751570OAI: oai:DiVA.org:uu-358557DiVA, id: diva2:1250072
Funder
EU, European Research Council, 260233EU, European Research Council, 680951Available from: 2018-09-21 Created: 2018-09-21 Last updated: 2018-09-21Bibliographically approved

Open Access in DiVA

fulltext(821 kB)9 downloads
File information
File name FULLTEXT01.pdfFile size 821 kBChecksum SHA-512
1eeb9dd05102f3794b39eba1bedeb2897be4d3e5ed5cbd6af0f9e3420eb5c8b244abfefb3f707a4490cc592a6648959305e87f61cfc42406fbd2fc6062dc7808
Type fulltextMimetype application/pdf

Other links

Publisher's full textPubMed

Search in DiVA

By author/editor
Morris, JakeMank, Judith E.
By organisation
Systematic Biology
In the same journal
Genes
Genetics

Search outside of DiVA

GoogleGoogle Scholar
Total: 9 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

doi
pubmed
urn-nbn

Altmetric score

doi
pubmed
urn-nbn
Total: 20 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf