Inferring Long-Term and Short-Term Determinants of Genetic Diversity in Honey Bees: Beekeeping Impact and Conservation Strategies DOI Creative Commons
Thibault Leroy, Pierre Faux, Benjamin Basso

и другие.

Molecular Biology and Evolution, Год журнала: 2024, Номер 41(12)

Опубликована: Дек. 1, 2024

Abstract Bees are vital pollinators in natural and agricultural landscapes around the globe, playing a key role maintaining flowering plant biodiversity ensuring food security. Among honey bee species, Western (Apis mellifera) is particularly significant, not only for its extensive crop pollination services but also producing economically valuable products such as honey. Here, we analyzed whole-genome sequence data from four Apis species to explore how evolution has shaped current diversity patterns. Using Approximate Bayesian Computation, first reconstructed demographic history of A. mellifera Europe, finding support postglacial secondary contacts, therefore predating human-mediated transfers linked modern beekeeping. However, our analysis recent changes reveals significant bottlenecks due beekeeping practices, which have notably affected genetic diversity. Black populations conservatories, those on islands, exhibit considerable loss, highlighting need evaluate long-term effectiveness conservation strategies. Additionally, observed high degree genomic nucleotide across despite divergence gradient spanning over 15 million years, consistent with recombination landscapes. Taken together, results provide most comprehensive assessment patterns bees date offer insights into optimal management resources ensure persistence their invaluable services.

Язык: Английский

The role of mating systems in postzygotic reproductive isolation between two recently divergentAquilegiaSpecies DOI Creative Commons
Yin‐Mei Ma, Junchu Peng, Yibing Weng

и другие.

bioRxiv (Cold Spring Harbor Laboratory), Год журнала: 2025, Номер unknown

Опубликована: Апрель 15, 2025

Abstract Mating systems play a crucial role in plant speciation. In particular, hybrid seed inviability is prevalent among species with different mating due to parental conflict for resource allocation offspring. However, whether such postzygotic barrier can be rapidly established recently diverged remains poorly understood. this study, we integrate population genomic and ecological approaches address question using pairs Aquilegia kansuensis A. ecalcarata , which approximately 0.256 Ma, sympatric from Qinghai, China. Population structure demographic history results reveal clear genetic differentiation between the two species, corroborating their recent divergence. The of outcrossing rate estimation based on microsatellite markers indicated that exhibit high selfing mixed systems, respectively. We performed reciprocal crosses found yielded very small number small-sized seeds when selfed was used as pollen donors, resulting strong asymmetric reproductive isolation. An approximate Bayesian computation framework identified 4.6% loci are associated isolation, gene ontology analyses these highlighted key pathways involved maturation post-embryonic development. Therefore, our findings provide evidence represent novel case isolation driven by divergent suggesting critical rapid

Язык: Английский

Процитировано

1
Genomic incompatibilities are persistent barriers when speciation happens with gene flow in Formica ants DOI Creative Commons
Patrick Heidbreder, Noora Poikela, Pierre Nouhaud

и другие.

bioRxiv (Cold Spring Harbor Laboratory), Год журнала: 2025, Номер unknown

Опубликована: Апрель 1, 2025

Abstract A current goal of speciation research is to identify the loci underlying reproductive barriers between species. Locating such barrier in empirical data difficult due often complex demographic history diverged taxa and heterogeneity evolutionary forces across genome. Here we take advantage a natural case hybridization two wood ant species ( Formica aquilonia F. polyctena ) regions reduced long-term gene flow using demographically explicit scans non-admixed genomes. In addition candidate Bateson-Dobzhansky-Muller incompatibilities (BDMIs) through an imbalanced recombinant haplotype frequency analysis × hybrid Both approaches find that are scattered Furthermore, BDMIs significantly overlap with identified by gIMble, indicating have persisted despite divergence Intriguingly, interact network number pairwise interactions BDMI has correlates its strength: hub-like many reduce more effectively. Finally regards function, gIMble arise outside both coding sequences (CDS) transposable elements. contrast, where co-locate associated introns, implying potential role alternative splicing or regulation incompatibilities, rather than CDS divergence. Overall, our results highlight underappreciated impact multilocus need consider connectivity future work. Significance Detecting closely related common research. However, reliable detection confounding signals genomic data. different, recently developed genome, on-going flow, maintain distinct We reveal incompatible can act as persistent barriers, theoretical predictions for their collapse under flow. Connectivity also seems play important persistence. These

Язык: Английский

Процитировано

0
Holocene Climate Change Promoted Allopatric Divergence and Disjunct Geographic Distribution in a Bee Orchid Species DOI
Anaïs Gibert, Roselyne Buscail, Michel Baguette

и другие.

Journal of Biogeography, Год журнала: 2024, Номер unknown

Опубликована: Сен. 2, 2024

ABSTRACT Aim Species with disjunct geographic distributions provide natural opportunities to investigate incipient or recent allopatric divergence. The combination of both genetic and ecological data may be fruitful decipher the causes such patterns: (i) actual vicariance, (ii) successful colonisation from one source a new range (dispersal, biological introduction) (iii) parallel convergent evolution. Location Southern France Northern Spain. Taxon bee orchid Ophrys aveyronensis (and its two recognised subspecies O. a. subsp. vitorica ) displays distribution subranges separated by 600 km on sides Pyrenees mountain range. Methods As divergence is often complex document in wild, we used population genomics niche modelling (ENM) this intriguing biogeographic pattern. Results genomic demonstrate that all studied populations exhibit similar patterns diversity dramatic decrease effective size compared ancestral population. Significant differentiation reciprocal monophyly exist between , despite very time as young ca. 1500 generations ago. Moreover, paleo‐ENM analyses support consistent split broad range, contraction distinct longitudinal latitudinal shifts response climate warming during Holocene. Main Conclusion congruence results obtained ENM approaches documents how continental initiated speciation system. provides promising opportunity study onset reproductive isolation evolution following an initial stage separation group high diversification rate.

Язык: Английский

Процитировано

2
Beyond gene flow: (non)‐parallelism of secondary contact in a pair of highly differentiated sibling species DOI Creative Commons
Hannah Augustijnen, Kay Lucek

Molecular Ecology, Год журнала: 2024, Номер 33(17)

Опубликована: Авг. 9, 2024

Abstract Replicated secondary contact zones can provide insights into the barriers to gene flow that are important during speciation and reveal which degree may result in similar evolutionary outcomes. Here, we studied two between highly differentiated Alpine butterflies of genus Erebia using whole‐genome resequencing data. We assessed genomic relationships populations species found hybridization be rare, with no little current or historical introgression either zone. There large similarities zones, consistent an allopatric origin interspecific differentiation, indications for ongoing reinforcing selection. Consistent expected reduced effective population size, further find scaffolds related Z‐chromosome show increased differentiation compared already high levels across entire genome, could also hint towards a contribution Z chromosome divergence this system. Finally, detected presence endosymbiont Wolbachia , cause reproductive isolation its hosts, all E. cassioides while it appears fully largely absent zone tyndarus . discuss how rare pattern have arisen affected dynamics upon contact.

Язык: Английский

Процитировано

0
Inferring long-term and short-term determinants of genetic diversity in honey bees: Beekeeping impact and conservation strategies DOI Creative Commons
Thibault Leroy, Pierre Faux, Benjamin Basso

и другие.

bioRxiv (Cold Spring Harbor Laboratory), Год журнала: 2024, Номер unknown

Опубликована: Сен. 8, 2024

Abstract Bees are vital pollinators in natural and agricultural landscapes around the globe, playing a key role maintaining flowering plant biodiversity ensuring food security. Among honey bee species, Western ( Apis mellifera ) is particularly significant, not only for its extensive crop pollination services but also producing economically valuable products such as honey. Here, we analyzed whole-genome sequence data from four species to explore how evolution has shaped current diversity patterns. Using Approximate Bayesian Computation, first reconstructed demographic history of A. Europe, finding support postglacial secondary contacts, therefore predating human-mediated transfers linked modern beekeeping. However, our analysis recent changes then reveals significant bottlenecks due beekeeping practices, which have notably affected genetic diversity. Black populations conservatories, those on islands, exhibit considerable loss, raising concerns about long-term effectiveness conservation strategies. Additionally, observed high degree genomic nucleotide across despite divergence gradient spanning over 15 million years, consistent with recombination landscapes. Taken together, results provide most comprehensive assessment patterns bees date offer insights into optimal management resources ensure persistence their invaluable services.

Язык: Английский

Процитировано

0
Inferring Long-Term and Short-Term Determinants of Genetic Diversity in Honey Bees: Beekeeping Impact and Conservation Strategies DOI Creative Commons
Thibault Leroy, Pierre Faux, Benjamin Basso

и другие.

Molecular Biology and Evolution, Год журнала: 2024, Номер 41(12)

Опубликована: Дек. 1, 2024

Abstract Bees are vital pollinators in natural and agricultural landscapes around the globe, playing a key role maintaining flowering plant biodiversity ensuring food security. Among honey bee species, Western (Apis mellifera) is particularly significant, not only for its extensive crop pollination services but also producing economically valuable products such as honey. Here, we analyzed whole-genome sequence data from four Apis species to explore how evolution has shaped current diversity patterns. Using Approximate Bayesian Computation, first reconstructed demographic history of A. mellifera Europe, finding support postglacial secondary contacts, therefore predating human-mediated transfers linked modern beekeeping. However, our analysis recent changes reveals significant bottlenecks due beekeeping practices, which have notably affected genetic diversity. Black populations conservatories, those on islands, exhibit considerable loss, highlighting need evaluate long-term effectiveness conservation strategies. Additionally, observed high degree genomic nucleotide across despite divergence gradient spanning over 15 million years, consistent with recombination landscapes. Taken together, results provide most comprehensive assessment patterns bees date offer insights into optimal management resources ensure persistence their invaluable services.

Язык: Английский

Процитировано

0