A phylogenomic perspective on diversity, hybridization and evolutionary affinities in the stickleback genus Pungitius

Autor: Bohao Fang, Baocheng Guo, Alexandra Yu. Kravchenko, Paolo Momigliano, Cui Wang, Takahito Shikano, Juha Merilä
Přispěvatelé: Organismal and Evolutionary Biology Research Programme, Ecological Genetics Research Unit, Helsinki Institute of Urban and Regional Studies (Urbaria), Biosciences, Ecology and Evolutionary Biology
Rok vydání: 2019
Předmět:
0106 biological sciences
0301 basic medicine
NINESPINE STICKLEBACKS
Time Factors
MITOCHONDRIAL-DNA
01 natural sciences
RAD-seq
Phylogenomics
Convergent evolution
Phylogeny
Likelihood Functions
INTROGRESSIVE HYBRIDIZATION
FRESH-WATER
Geography
phylogenomics
Smegmamorpha
Mitochondria
SEX-DETERMINATION
1181 Ecology
evolutionary biology
Female
Taxonomy (biology)
Gene Flow
Mitochondrial DNA
Species complex
introgression
Introgression
Biology
010603 evolutionary biology
GENETIC ARCHITECTURE
SPECIES DELIMITATION
PELVIC REDUCTION
03 medical and health sciences
Pungitius
Species Specificity
Phylogenetics
Genetics
Animals
POPULATION-STRUCTURE
biogeography
Ecology
Evolution
Behavior and Systematics
Cell Nucleus
Genetic Variation
15. Life on land
biology.organism_classification
030104 developmental biology
Evolutionary biology
PARALLEL EVOLUTION
Gasterosteidae
1182 Biochemistry
cell and molecular biology
Hybridization
Genetic
Zdroj: Molecular Ecology. 28:4046-4064
ISSN: 1365-294X
0962-1083
Popis: Hybridization and convergent evolution are phenomena of broad interest in evolutionary biology, but their occurrence poses challenges for reconstructing evolutionary affinities among affected taxa. Sticklebacks in the genus Pungitius are a case in point: evolutionary relationships and taxonomic validity of different species and populations in this circumpolarly distributed species complex remain contentious due to convergent evolution of traits regarded as diagnostic in their taxonomy, and possibly also due to frequent hybridization among taxa. To clarify the evolutionary relationships among different Pungitius species and populations globally, as well as to study the prevalence and extent of introgression among recognized species, genomic data sets of both reference genome-anchored single nucleotide polymorphisms and de novo assembled RAD-tag loci were constructed with RAD-seq data. Both data sets yielded topologically identical and well-supported species trees. Incongruence between nuclear and mitochondrial DNA-based trees was found and suggested possibly frequent hybridization and mitogenome capture during the evolution of Pungitius sticklebacks. Further analyses revealed evidence for frequent nuclear genetic introgression among Pungitius species, although the estimated proportions of autosomal introgression were low. Apart from providing evidence for frequent hybridization, the results challenge earlier mitochondrial and morphology-based hypotheses regarding the number of species and their affinities in this genus: at least seven extant species can be recognized on the basis of genetic data. The results also shed new light on the biogeographical history of the Pungitius-complex, including suggestion of several trans-Arctic invasions of Europe from the Northern Pacific. The well-resolved phylogeny should facilitate the utility of this genus as a model system for future comparative evolutionary studies.
Databáze: OpenAIRE
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