Chromosome analysis and the occurrence of B chromosomes in fish parasite Acanthocephalus anguillae (Palaeacanthocephala: Echinorhynchida)

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60077344%3A_____%2F23%3A00577320" target="_blank" >RIV/60077344:_____/23:00577320 - isvavai.cz</a>

Alternative codes found

RIV/60076658:12310/23:43907235

Result on the web

<a href="https://www.parasite-journal.org/articles/parasite/pdf/2023/01/parasite230069.pdf" target="_blank" >https://www.parasite-journal.org/articles/parasite/pdf/2023/01/parasite230069.pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1051/parasite/2023045" target="_blank" >10.1051/parasite/2023045</a>

Result language

angličtina

Original language name

Chromosome analysis and the occurrence of B chromosomes in fish parasite Acanthocephalus anguillae (Palaeacanthocephala: Echinorhynchida)

Original language description

The cytogenetics of Acanthocephala is a neglected area in the study of this group of endoparasites. Chromosome number and/or karyotypes are known for only 12 of the 1,270 described species, and molecular cytogenetic data are limited to rDNA mapping in two species. The standard karyological technique and mapping of 18S rRNA and H3 histone genes on the chromosomes of Acanthocephalus anguillae individuals from three populations, one of which originated from the unfavorable environmental conditions of the Zemplínska Šírava reservoir in eastern Slovakia, were applied for the first time. All specimens had 2n = 7/8 (male/female), n = 1m + 1m-sm + 1a + 1a (X). Fluorescence in situ hybridization (FISH) revealed three loci of 18S rDNA on two autosomes and dispersion of H3 histone genes on all autosomes and the X chromosome. In addition to the standard A chromosome set, 34% of specimens from Zemplínska Šírava possessed a small acrocentric B chromosome, which was always found to be univalent, with no pairing observed between the B chromosome and the A complement. The B chromosome had a small amount of heterochromatin in the centromeric and telomeric regions of the chromosomal arms and showed two clusters of H3 genes. It is well known that an environment permanently polluted with chemicals leads to an increased incidence of chromosomal rearrangements. As a possible scenario for the B chromosome origin, we propose chromosomal breaks due to the mutagenic effect of pollutants in the aquatic environment. The results are discussed in comparison with previous chromosome data from Echinorhynchida species.

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

10603 - Genetics and heredity (medical genetics to be 3)

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2023

Confidentiality

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

Name of the periodical

Parasite

ISSN

1252-607X

e-ISSN

1776-1042

Volume of the periodical

30

Issue of the periodical within the volume

OCT 23

Country of publishing house

FR - FRANCE

Number of pages

13

Pages from-to

44

UT code for WoS article

001090266800001

EID of the result in the Scopus database

2-s2.0-85175270081