Gene flow assessment helps to distinguish strong genomic
structure from speciation in an Iberian ant-eating spider

J 2023

Gene flow assessment helps to distinguish strong genomic structure from speciation in an Iberian ant-eating spider

ORTIZ MARTÍNEZ, David, Stanislav PEKÁR and Anna BRYJOVÁ

Basic information

Original name

Gene flow assessment helps to distinguish strong genomic structure from speciation in an Iberian ant-eating spider

Authors

ORTIZ MARTÍNEZ, David (724 Spain, guarantor, belonging to the institution), Stanislav PEKÁR (703 Slovakia, belonging to the institution) and Anna BRYJOVÁ

Edition

Molecular Phylogenetics and Evolution, Elsevier, 2023, 1055-7903

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10602 Biology , Evolutionary biology

Country of publisher

United States of America

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

URL

Impact factor

Impact factor: 4.100 in 2022

RIV identification code

RIV/00216224:14310/23:00130205

Organization unit

Faculty of Science

DOI

http://dx.doi.org/10.1016/j.ympev.2022.107682

UT WoS

000917099800001

Keywords in English

Ancestral range estimation; Gdi; Gene flow analyses; Integrative taxonomy; Multispecies coalescent; Species delimitation

Abstract

V originále

Although genomic data is boosting our understanding of evolution, we still lack a solid framework to perform reliable genome-based species delineation. This problem is especially critical in the case of phylogeographically structured organisms, with allopatric populations showing similar divergence patterns as species. Here, we assess the species limits and phylogeography of Zodarion alacre, an ant-eating spider widely distributed across the Iberian Peninsula. We first performed species delimitation based on genome-wide data and then validated these results using additional evidence. A commonly employed species delimitation strategy detected four distinct lineages with almost no admixture, which present allopatric distributions. These lineages showed ecological differentiation but no clear morphological differentiation, and evidence of introgression in a mitochondrial barcode. Phylogenomic networks found evidence of substantial gene flow between lineages. Finally, phylogeographic methods highlighted remarkable isolation by distance and detected evidence of range expansion from south-central Portugal to central-north Spain. We conclude that despite their deep genomic differentiation, the lineages of Z. alacre do not show evidence of complete speciation. Our results likely shed light on why Zodarion is among the most diversified spider genera despite its limited distribution and support the use of gene flow evidence to inform species boundaries.

Links

GA22-20229S, research and development project

Name: Evoluce potravní specializace u myrmekofágních pavouků

Investor: Czech Science Foundation

LM2018140, research and development project

Name: e-Infrastruktura CZ (Acronym: e-INFRA CZ)

Investor: Ministry of Education, Youth and Sports of the CR

Citovat

ORTIZ MARTÍNEZ, David, Stanislav PEKÁR and Anna BRYJOVÁ. Gene flow assessment helps to distinguish strong genomic structure from speciation in an Iberian ant-eating spider. Molecular Phylogenetics and Evolution. Elsevier, 2023, vol. 180, March, p. 1-14. ISSN 1055-7903. Available from: https://dx.doi.org/10.1016/j.ympev.2022.107682.

@article{2248072,
   author = {Ortiz Martínez, David and Pekár, Stanislav and Bryjová, Anna},
   article_number = {March},
   doi = {http://dx.doi.org/10.1016/j.ympev.2022.107682},
   keywords = {Ancestral range estimation; Gdi; Gene flow analyses; Integrative taxonomy; Multispecies coalescent; Species delimitation},
   language = {eng},
   issn = {1055-7903},
   journal = {Molecular Phylogenetics and Evolution},
   title = {Gene flow assessment helps to distinguish strong genomic structure from speciation in an Iberian ant-eating spider},
   url = {https://doi.org/10.1016/j.ympev.2022.107682},
   volume = {180},
   year = {2023}
}

TY  - JOUR
ID  - 2248072
AU  - Ortiz Martínez, David - Pekár, Stanislav - Bryjová, Anna
PY  - 2023
TI  - Gene flow assessment helps to distinguish strong genomic structure from speciation in an Iberian ant-eating spider
JF  - Molecular Phylogenetics and Evolution
VL  - 180
IS  - March
SP  - 1-14
EP  - 1-14
PB  - Elsevier
SN  - 10557903
KW  - Ancestral range estimation
KW  - Gdi
KW  - Gene flow analyses
KW  - Integrative taxonomy
KW  - Multispecies coalescent
KW  - Species delimitation
UR  - https://doi.org/10.1016/j.ympev.2022.107682
N2  - Although genomic data is boosting our understanding of evolution, we still lack a solid framework to perform reliable genome-based species delineation. This problem is especially critical in the case of phylogeographically structured organisms, with allopatric populations showing similar divergence patterns as species. Here, we assess the species limits and phylogeography of Zodarion alacre, an ant-eating spider widely distributed across the Iberian Peninsula. We first performed species delimitation based on genome-wide data and then validated these results using additional evidence. A commonly employed species delimitation strategy detected four distinct lineages with almost no admixture, which present allopatric distributions. These lineages showed ecological differentiation but no clear morphological differentiation, and evidence of introgression in a mitochondrial barcode. Phylogenomic networks found evidence of substantial gene flow between lineages. Finally, phylogeographic methods highlighted remarkable isolation by distance and detected evidence of range expansion from south-central Portugal to central-north Spain. We conclude that despite their deep genomic differentiation, the lineages of Z. alacre do not show evidence of complete speciation. Our results likely shed light on why Zodarion is among the most diversified spider genera despite its limited distribution and support the use of gene flow evidence to inform species boundaries.
ER  -

ORTIZ MARTÍNEZ, David, Stanislav PEKÁR and Anna BRYJOVÁ. Gene flow assessment helps to distinguish strong genomic structure from speciation in an Iberian ant-eating spider. \textit{Molecular Phylogenetics and Evolution}. Elsevier, 2023, vol.~180, March, p.~1-14. ISSN~1055-7903. Available from: https://dx.doi.org/10.1016/j.ympev.2022.107682.

Detailed Information on Publication Record