Cytogenetics of the Javan file snake (Acrochordus javanicus) and the evolution of snake sex chromosomes

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F18%3A10385269" target="_blank" >RIV/00216208:11310/18:10385269 - isvavai.cz</a>

Alternative codes found

RIV/67985904:_____/18:00488580

Result on the web

<a href="https://doi.org/10.1111/jzs.12180" target="_blank" >https://doi.org/10.1111/jzs.12180</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1111/jzs.12180" target="_blank" >10.1111/jzs.12180</a>

Result language

angličtina

Original language name

Cytogenetics of the Javan file snake (Acrochordus javanicus) and the evolution of snake sex chromosomes

Original language description

Advanced snakes (Caenophidia) are an important group including around 90% of the recent species of snakes. The basal splitting of the clade is still rather controversial, and it is not fully understood when the differentiation of sex chromosomes started in snake evolution. To help resolve these questions, we performed cytogenetic analysis on the Javan file snake, also known as the elephant trunk snake (Acrochordus javanicus) from the family Acrochordidae, which occupies an informative phylogenetic position. For the first time for acrochordids, we identified heteromorphic ZZ/ZW sex chromosomes with a highly heterochromatic W chromosome. These traits are likely synapomorphies of advanced snakes. In contrast to other caenophidian snakes, the Javan file snake lacks an accumulation of Bkm repeats and interstitial telomeric repeats on the W chromosome. This observation supports the sister group relationship between acrochordids and all other caenophidian snakes including the family Xenodermatidae and questions the suggested role of Bkm repeats in the formation of sex heterochromatin in snakes. The revealed partial gene content of the Z chromosome in acrochordids supports the hypothesis that the progressive degeneration of the W chromosome commenced in snakes before the basal split of Caenophidia, albeit its evolutionary rate in file snakes might be slower than in their sister lineage.

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

—

OECD FORD branch

10613 - Zoology

Project

<a href="/en/project/GJ17-22141Y" target="_blank" >GJ17-22141Y: Evolution of sex chromosomes in toxicoferan reptiles</a><br>

Continuities

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

Publication year

2018

Confidentiality

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

Name of the periodical

Journal of Zoological Systematics and Evolutionary Research

ISSN

0947-5745

e-ISSN

—

Volume of the periodical

56

Issue of the periodical within the volume

1

Country of publishing house

DE - GERMANY

Number of pages

9

Pages from-to

117-125

UT code for WoS article

000419657600008

EID of the result in the Scopus database

2-s2.0-85040374008