Mitonuclear interactions impact aerobic metabolism in hybrids and may explain mitonuclear discordance in young, naturally hybridizing bird lineages

Molecular Ecology, Journal Year: 2024, Volume and Issue: 33(12)

Published: May 10, 2024

Abstract Understanding genetic incompatibilities and introgression between incipient species are major goals in evolutionary biology. Mitochondrial genes evolve rapidly exist dense gene networks with coevolved nuclear genes, suggesting that mitochondrial respiration may be particularly susceptible to disruption hybrid organisms. Mitonuclear interactions have been demonstrated contribute dysfunction deeply divergent taxa crossed the laboratory, but there few empirical examples of mitonuclear younger lineages naturally hybridize. Here, we use controlled crosses high‐resolution respirometry provide first experimental evidence a bird inter‐lineage impact aerobic metabolism. Specifically, capacity two mitodiscordant backcrosses (with mismatched combinations) differs from one another, although they do not differ significantly parental groups or mitoconcordant as would expect disruptions. In wild zone these subspecies, cline centre is shifted west centre, which consistent direction our results. Our results therefore demonstrate asymmetric cellular help explain geographic discordance genomes observed wild.

Language: Английский

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Whole‐genome phylogeography of the blue‐faced honeyeater (Entomyzon cyanotis) and discovery and characterization of a neo‐Z chromosome

Molecular Ecology, Journal Year: 2022, Volume and Issue: 32(6), P. 1248 - 1270

Published: July 7, 2022

Whole-genome surveys of genetic diversity and geographic variation often yield unexpected discoveries novel structural variation, which long-read DNA sequencing can help clarify. Here, we report on whole-genome phylogeography a bird exhibiting classic vicariant geographies across Australia New Guinea, the blue-faced honeyeater (Entomyzon cyanotis), discovery characterization neo-Z chromosome by sequencing. Using short-read genome-wide SNPs, inferred population divergence events within E. cyanotis Carpentarian other biogeographic barriers during Pleistocene (~0.3-1.7 Ma). Evidence for introgression between nonsister populations supports hypothesis reticulate evolution around triad dynamic Lake Carpentaria Guinea. During this phylogeographic survey, discovered large (134 Mbp) explored its diversity, landscape. We show that, as in some sylvioid passerine birds, fusion occurred 5 Z to form chromosome; cyanotis, ancestral pseudoautosomal region (PAR) appears nonrecombinant W, along with most fused 5. The added recombination-suppressed portion (~37.2 displays reduced faster differentiation compared ancestral-Z. Yet, new PAR (~17.4 shows elevated autosomes, potentially resulting from introgression. In our case, helped clarify genomic landscape autosomes sex chromosomes species where prior knowledge genome structure was still incomplete.

Language: Английский

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Experimentally testing mate preference in an avian system with unidirectional bill color introgression

Ecology and Evolution, Journal Year: 2023, Volume and Issue: 13(2)

Published: Feb. 1, 2023

Mating behavior can play a key role in speciation by inhibiting or facilitating gene flow between closely related taxa. Hybrid zones facilitate direct examination of mating and the traits involved establishing species barriers. The long-tailed finch (

Language: Английский

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Contemporary intergeneric hybridization and backcrossing among birds-of-paradise

Evolution Letters, Journal Year: 2024, Volume and Issue: 8(5), P. 680 - 694

Published: June 8, 2024

Abstract Despite large differences in morphology, behavior and lek-mating strategies the birds-of-paradise are known to hybridize occasionally, even across different genera. Many of these bird-of-paradise hybrids were originally described as distinct species based on morphological when compared recognized species. Nowadays, specimens generally assessments. Having fascinated naturalists for centuries, hybrid have been collected kept Natural History Collections. In present study, we utilize this remarkable resource a museomics framework evaluate genomic composition most intergeneric some intrageneric hybrids. We show that majority investigated first-generation parental species, cases, line with prior also identify two result introgressive hybridization between Additionally, exhibit morphologies but no identifiable signals hybridization, which may indicate minor levels introgression can effects. Our findings provide direct evidence contemporary taking place genera nature, despite markedly behaviors.

Language: Английский

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Accelerated differentiation of neo-W nuclear-encoded mitochondrial genes between two climate-associated bird lineages signals potential co-evolution with mitogenomes

Heredity, Journal Year: 2024, Volume and Issue: 133(5), P. 342 - 354

Published: Aug. 22, 2024

There is considerable evidence for mitochondrial-nuclear co-adaptation as a key evolutionary driver. Hypotheses regarding the roles of sex-linkage have emphasized Z-linked nuclear genes with mitochondrial function (N-mt genes), whereas it remains contentious whether perfect co-inheritance W mitogenomes could hinder or facilitate co-adaptation. Young (neo-) sex chromosomes that possess relatively many N-mt compared to older provide unprecedented hypothesis-testing opportunities. Eastern Yellow Robin (EYR) lineages in coastal and inland habitats different climates are diverged mitogenomes, ~ 15.4 Mb region enriched genes, contrast otherwise-similar genomes. This maps passerine chromosome 1A, previously found be neo-sex EYR genome. To compare sex-linked Chr1A-derived between lineages, we assembled annotated We that: (i) lineage shares similar system lineage, (ii) neo-W neo-Z not more than comparable non-N-mt showed little broad positive selection, (iii) however, W-linked their gametologs. The latter effect was ~7 times stronger suggesting might under environmental selection through co-evolution mitogenomes. Finally, identify candidate gene driver divergent NDUFA12. Our data represent rare example possible role W-associated interactions climate-associated adaptation differentiation.

Language: Английский

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Spread of yellow-bill-color alleles favored by selection in the long-tailed finch hybrid system

Current Biology, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 1, 2024

Language: Английский

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Gene expression in male and female stickleback from populations with convergent and divergent throat coloration

Ecology and Evolution, Journal Year: 2022, Volume and Issue: 12(5)

Published: April 29, 2022

Understanding of genetic mechanisms underlying variation in sexual dichromatism remains limited, especially for carotenoid-based colors. We addressed this knowledge gap a gene expression study with threespine stickleback. compared male and female throat tissues across five populations, including two which red coloration has evolved convergently. found that the individual genes, ontologies, coexpression networks associated color within population differed between California British Columbia suggesting differences mechanisms. Comparing females from each these populations to dominated by dull females, we again extensive differences. For population, genes showed same patterns males only inconsistently. The functional roles showing correlated are unclear whereas highlighted through inter-population comparisons include some previously suggested function carotenoid pathways. Among these, most consistent involved TTC39B (Tetratricopeptide Repeat Domain 39B), is known QTL stickleback implicated other taxa.

Language: Английский

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Multigenerational hybridisation results in heterosis and facilitates adaptive introgression, with no evidence of outbreeding depression in a pair of marine gastropods

Research Square (Research Square), Journal Year: 2024, Volume and Issue: unknown

Published: March 8, 2024

Abstract Anthropogenic environmental changes continue to threaten species globally. On the one hand, anthropogenic movement of has caused unintentional hybridisation, which contributed declines. other hand (more recently), hybridisation been viewed as a way increase evolutionary potential vulnerable rapid change. However, benefits mixing genetically divergent lineages do not come without risks individual fitness and long-term viability populations. Here, we use combination genome-wide Single Nucleotide Polymorphism (SNP) markers, mitochondrial DNA sequencing measurements growth rate determine genetic consequences between two congeneric marine gastropods. Multigeneration resulted from introduction intertidal periwinkle Bembicium vittatum (a direct developer) into native range its congener auratum with planktotrophic larval dispersal). Despite significant divergences species, found no evidence outbreeding depression in admixed population. Instead, for heterosis, dissipated over time. After an initial lag, frequency introduced B. alleles declined dramatically hybrid population, however, few (3.18%) increased significantly against overall trend, providing adaptive introgression. In context conservation management tool, our results provide some that can be gained suggest costs due small.

Language: Английский

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Adaptive Introgression of Carotenoid Processing Genes that Underlie Bill Color Variation in the Long-Tailed Finch

Published: Jan. 1, 2024

Language: Английский

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Multigenerational hybridisation results in heterosis and facilitates adaptive introgression, with no evidence of outbreeding depression in a pair of marine gastropods

Heredity, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 1, 2024

Language: Английский

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