XX/XY sex chromosome system and chromosome markers in the snake eel Ophisurus serpens (Anguilliformes: Ophichtidae)

Autor:	Susanna Salvadori, Federica Deidda, Anna Maria Deiana, Antonello Mulas, Cinzia Lobina, Elisabetta Coluccia
Rok vydání:	2018
Předmět:	0106 biological sciences 0301 basic medicine Genetics Autosome biology Anguilliformes Chromosome Karyotype Ophichthidae Aquatic Science Ribosomal RNA Oceanography biology.organism_classification 010603 evolutionary biology 01 natural sciences food.food 03 medical and health sciences 030104 developmental biology food Ophisurus Ecology Evolution Behavior and Systematics X chromosome
Zdroj:	Marine Biology Research. 14:158-164
ISSN:	1745-1019 1745-1000
DOI:	10.1080/17451000.2017.1406665
Popis:	We report evidence of an XX/XY sex chromosome system in the snake eel Ophisurus serpens (Anguilliformes: Ophichthidae). We characterized the male and female karyotypes by C-, replication- and HaeIII-bandings. The 45S and 5S ribosomal gene families were located using dual fluorescence in situ hybridization, which showed that the 5S rDNA sites were present on the X chromosome, beside an autosome pair. FISH with a telomeric peptide nucleic acid probe enabled recognition of Interstitial Telomeric Sequences (ITSs), likely remnants of chromosomal rearrangements, in five chromosome pairs, including the rDNA-bearing ones. Possible mechanisms of the origin of sex chromosomes in this species are discussed, considering the presence of a sex-linked marker and ITSs.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::d01670d4406aea698c32582fe44fb53c https://doi.org/10.1080/17451000.2017.1406665 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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