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Cephalopod Sex Determination and its Ancient Evolutionary Origin Revealed by Chromosome-level Assembly of the California Two-Spot Octopus.
Coffing, Gabrielle C; Tittes, Silas; Small, Scott T; Songco-Casey, Jeremea O; Piscopo, Denise M; Pungor, Judit R; Miller, Adam C; Niell, Cristopher M; Kern, Andrew D.
Afiliación
  • Coffing GC; Department of Biology, University of Oregon, 77 Klamath Hall, 1210 University of Oregon, Eugene, OR, 97403, USA.
  • Tittes S; Department of Biology, University of Oregon, 77 Klamath Hall, 1210 University of Oregon, Eugene, OR, 97403, USA.
  • Small ST; Department of Biology, University of Oregon, 77 Klamath Hall, 1210 University of Oregon, Eugene, OR, 97403, USA.
  • Songco-Casey JO; Department of Biology, University of Oregon, 77 Klamath Hall, 1210 University of Oregon, Eugene, OR, 97403, USA.
  • Piscopo DM; Department of Biology, University of Oregon, 77 Klamath Hall, 1210 University of Oregon, Eugene, OR, 97403, USA.
  • Pungor JR; Department of Biology, University of Oregon, 77 Klamath Hall, 1210 University of Oregon, Eugene, OR, 97403, USA.
  • Miller AC; Department of Biology, University of Oregon, 77 Klamath Hall, 1210 University of Oregon, Eugene, OR, 97403, USA.
  • Niell CM; Department of Biology, University of Oregon, 77 Klamath Hall, 1210 University of Oregon, Eugene, OR, 97403, USA.
  • Kern AD; Department of Biology, University of Oregon, 77 Klamath Hall, 1210 University of Oregon, Eugene, OR, 97403, USA.
bioRxiv ; 2024 Feb 29.
Article en En | MEDLINE | ID: mdl-38463997
ABSTRACT
Sex chromosomes are critical elements of sexual reproduction in many animal and plant taxa, however they show incredible diversity and rapid turnover even within clades. Here, using a chromosome-level assembly generated with long read sequencing, we report the first evidence for genetic sex determination in cephalopods. We have uncovered a sex chromosome in California two-spot octopus (Octopus bimaculoides) in which males/females show ZZ/ZO karyotypes respectively. We show that the octopus Z chromosome is an evolutionary outlier with respect to divergence and repetitive element content as compared to other chromosomes and that it is present in all coleoid cephalopods that we have examined. Our results suggest that the cephalopod Z chromosome originated between 455 and 248 million years ago and has been conserved to the present, making it the among the oldest conserved animal sex chromosomes known.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: BioRxiv Año: 2024 Tipo del documento: Article País de afiliación: Estados Unidos
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: BioRxiv Año: 2024 Tipo del documento: Article País de afiliación: Estados Unidos