First Report of Sex Chromosomes in Plated Lizards (Squamata: Gerrhosauridae)

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F21%3A10431371" target="_blank" >RIV/00216208:11310/21:10431371 - isvavai.cz</a>

Result on the web

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=sjOOmYF3Cx" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=sjOOmYF3Cx</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1159/000513764" target="_blank" >10.1159/000513764</a>

Result language

angličtina

Original language name

First Report of Sex Chromosomes in Plated Lizards (Squamata: Gerrhosauridae)

Original language description

Squamate reptiles show high diversity in sex determination ranging from environmental sex determination to genotypic sex determination with varying degrees of differentiation of sex chromosomes. Unfortunately, we lack even basic information on sex determination mode in several lineages of squamates, which prevents full understanding of their diversity and evolution of sex determination. One of the reptilian lineages with missing information on sex determination is the family Gerrhosauridae, commonly known as the plated lizards. Several species of gerrhosaurids have been studied in the past by conventional cytogenetic methods, but sex-specific differences were not identified. In this study, we applied both conventional and molecular cytogenetic methods to metaphases from both sexes of the Peters&apos; keeled plated lizard (Tracheloptychus petersi). We identified accumulations of rDNA loci in a pair of microchromosomes in metaphases from males, but only in a single microchromosome in females. The restriction of the observed heterozygosity to females suggests a putative ZZ/ZW system of sex chromosomes, which represents the first report of sex chromosomes in a gerrhosaurid lizard. The lack of sex-specific signals in all other cytogenetic methods implies that the sex chromosomes of T. petersi are poorly differentiated in sequence content.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10602 - Biology (theoretical, mathematical, thermal, cryobiology, biological rhythm), Evolutionary biology

Project

<a href="/en/project/GC20-27236J" target="_blank" >GC20-27236J: Comparative and genomic perspective on karyotype evolution in reptiles</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2021

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Sexual Development

ISSN

1661-5425

e-ISSN

—

Volume of the periodical

14

Issue of the periodical within the volume

1-6

Country of publishing house

CH - SWITZERLAND

Number of pages

6

Pages from-to

60-65

UT code for WoS article

000625247300001

EID of the result in the Scopus database

2-s2.0-85112215862