Genomic regions of current low hybridisation mark long-term barriers to gene flow in scarce swallowtail butterflies

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081766%3A_____%2F25%3A00619140" target="_blank" >RIV/68081766:_____/25:00619140 - isvavai.cz</a>

Result on the web

<a href="https://journals.plos.org/plosgenetics/article?id=10.1371/journal.pgen.1011655" target="_blank" >https://journals.plos.org/plosgenetics/article?id=10.1371/journal.pgen.1011655</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1371/journal.pgen.1011655" target="_blank" >10.1371/journal.pgen.1011655</a>

Result language

angličtina

Original language name

Genomic regions of current low hybridisation mark long-term barriers to gene flow in scarce swallowtail butterflies

Original language description

Many closely related species continue to hybridise after millions of generations of divergence. However, the extent to which current patterning in hybrid zones connects back to the speciation process remains unclear: does evidence for current multilocus barriers support the hypothesis of speciation due to multilocus divergence? We analyse whole-genome sequencing data to investigate the speciation history of the scarce swallowtails Iphiclidespodalirius and I. feisthamelii, which abut at a narrow (similar to 25 km) contact zone north of the Pyrenees. We first quantify the heterogeneity of effective migration rate under a model of isolation with migration, using genomes sampled across the range to identify long-term barriers to gene flow. Secondly, we investigate the recent ancestry of individuals from the hybrid zone using genome polarisation and estimate the coupling coefficient under a model of a multilocus barrier. We infer a low rate of long-term gene flow from I. feisthamelii into I. podalirius the direction of which matches the admixture across the hybrid zone and complete reproductive isolation across approximate to 33% of the genome. Our contrast of recent and long-term gene flow shows that regions of low recent hybridisation are indeed enriched for long-term barriers which maintain divergence between these hybridising sister species. This finding paves the way for future analysis of the evolution of reproductive isolation along the speciation continuum.

Czech name

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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

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

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2025

Confidentiality

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

Name of the periodical

PLoS Genetics

ISSN

1553-7404

e-ISSN

—

Volume of the periodical

21

Issue of the periodical within the volume

4

Country of publishing house

US - UNITED STATES

Number of pages

29

Pages from-to

e1011655

UT code for WoS article

001463502200003

EID of the result in the Scopus database

2-s2.0-105002393326