The past, the recent, and the ongoing evolutionary processes of the worldwide invasive ascidian Styela plicata DOI
Carles Galià‐Camps, Xavier Turón, Marta Pascual

et al.

Authorea (Authorea), Journal Year: 2024, Volume and Issue: unknown

Published: Aug. 29, 2024

Invasive species are one of the main threats to global biodiversity and, within marine ecosystems, tunicates feature some prominent examples. Styela plicata is an ascidian inhabiting harbors in all temperate oceans and seas, thus being considered a thriving invasive species. However, this species' adaptive mechanisms, introduction history, population structure have never been completely elucidated. Here, by genotyping 87 S. individuals from 18 localities worldwide with 2b-RADseq, we confirm presence four chromosome inversions, demonstrate structuring on species, detect local adaptation signals, infer historical demographic events. The locality North Carolina constitutes utterly unrelated population, Atlanto-Mediterranean Pacific constitute their own genetic clusters, South presents intermediate position between other two groups. For each biogeographic highlight substructuring, most evident split Atlantic+Mediterranean Atlantic localities. We identify genomic drivers for adaptation, functions involved cell processes, metabolism, development, ion transport, among others. model ancient effective sizes, providing evidence three bottlenecks that could correspond different Finally, hybridization tests point having hybrid origin, likely resulting secondary contact populations. Overall, study highlights complex processes plicata, which led its current distribution, structure, footprint worldwide.

Language: Английский

Allochrony in Atlantic Lumpfish: Genomic and Otolith Shape Divergence Between Spring and Autumn Spawners DOI Creative Commons

Mathilde Horaud,

N. Raventos, Kim Præbel

et al.

Ecology and Evolution, Journal Year: 2025, Volume and Issue: 15(2)

Published: Feb. 1, 2025

ABSTRACT Allochrony is a form of reproductive isolation characterized by differences in the timing spawning and may play crucial role genetic phenotypic divergence within species. The Atlantic lumpfish ( Cyclopterus lumpus ) known to spawn spring autumn. However, allochrony on genomic structure this species has not been addressed. Here, combining whole genome sequencing data otolith shape 64 specimens, we explore evolutionary drivers lumpfish, focusing autumn spawners sampled at two well‐separated grounds along Norwegian coast. Overall, identified pronounced morphologic between groups. Genomic groups were concentrated three chromosomes, with region chromosome 1 encompassing same single nucleotide polymorphisms (SNPs) driving differential season for both localities, suggesting parallel responses. functional analysis SNPs revealed genes associated responses environmental stressors, possibly adaptations seasonal variations high latitudes. morphological otoliths supported these findings, showing compatible light availability. presence islands divergence, alongside general lack differentiation across mitochondrial genome, suggest recent rapid selection processes potentially modulated ongoing gene flow. This study underscores importance considering temporal structures, particularly bimodal time, conservation management strategies prevent overexploitation optimize breeding programs.

Language: Английский

Citations

0
Ascidian Fouling in North Carolina Shellfish Farms DOI Creative Commons

Jordan Pilcher,

G. B. Monteith,

Brenna Hutchings

et al.

Aquaculture Research, Journal Year: 2025, Volume and Issue: 2025(1)

Published: Jan. 1, 2025

Ascidians are marine sessile animals that particularly abundant on artificial structures, where they often overgrow native species and compete with other filter feeders. North Carolina’s (NC) coastline supports productive aquaculture operations ascidians considered pests there. Five shellfish farms four nearby marinas were surveyed to compare the structure composition of their ascidian communities using photo‐quadrat surveys presence–absence abundance matrices, “marina” “shellfish farm” as factors. Twelve observed in marinas, but only six farms: three native, two cryptogenic, one identifiable genus level. The ( Clavelina oblonga , Perophora viridis Molgula manhattensis ) have established populations many world regions at least visited. cryptogenic Styela plicata was found all most species. All also present no significant difference or abundance. Independently introduction status, thriving a wide range habitats more adaptable better suited establish substrates, resulting increased maintenance costs for operations.

Language: Английский

Citations

0
The past, the recent, and the ongoing evolutionary processes of the worldwide invasive ascidian Styela plicata DOI Creative Commons
Carles Galià‐Camps, Alba Enguídanos, Xavier Turón

et al.

Molecular Ecology, Journal Year: 2024, Volume and Issue: 33(18)

Published: Aug. 28, 2024

Abstract Invasive species are one of the main threats to global biodiversity and, within marine ecosystems, tunicates feature some prominent examples. Styela plicata is an ascidian inhabiting harbours in all temperate oceans and seas, thus being considered a thriving invasive species. However, this species' adaptive mechanisms, introduction history, population structure have never been completely elucidated. Here, by genotyping 87 S. individuals from 18 localities worldwide with 2b‐RADseq, we confirm presence four chromosome inversions, demonstrate structuring on species, detect local adaptation signals, infer historical demographic events. We show that North Carolina constitute unrelated population, Atlanto‐Mediterranean Pacific form their own genetic clusters substructuring, most evident split between northern southern Atlantic localities. The locality South presents intermediate position other two groups pointing hybrid origin recurrent gene flow. generate test models, providing evidence independent events Pacific, admixture originated Carolina. Finally, identify candidate loci for adaptation, functions involved cell processes, metabolism, development, ion transport, among others. Overall, study highlights complex processes , which led its current distribution, structure, footprint worldwide.

Language: Английский

Citations

2
Navigating spatio-temporal microbiome dynamics: Environmental factors and trace elements shape the symbiont community of an invasive marine species DOI Creative Commons
Carles Galià‐Camps, Liam Junkin,

Xavier Borrallo

et al.

Marine Pollution Bulletin, Journal Year: 2024, Volume and Issue: 203, P. 116477 - 116477

Published: May 16, 2024

The proliferation of marine invasive species is a mounting concern. While the role microbial communities in ascidian recognized, seasonal shifts microbiome composition remains largely unexplored. We sampled five individuals Styela plicata quarterly from January 2020 to October 2021 two harbours, examining gills, tunics, and surrounding water. By analysing Amplicon Sequence Variants (ASVs) seawater trace elements, we found that compartment (seawater, tunic, or gills) was primary differentiating factor, followed by harbour. Clear patterns were evident bacteria, less so absent tunics. identified compartment-specific as well indicator ASVs correlated with element concentrations. Among these Endozoicomonas, Hepatoplasma Rhodobacteraceae had reported functions which might be necessary for overcoming seasonality shifts. This study contributes understanding dynamics holobiont systems, indicate potential adaptation invasiveness.

Language: Английский

Citations

1
The past, the recent, and the ongoing evolutionary processes of the worldwide invasive ascidian Styela plicata DOI
Carles Galià‐Camps, Xavier Turón, Marta Pascual

et al.

Authorea (Authorea), Journal Year: 2024, Volume and Issue: unknown

Published: Aug. 29, 2024

Invasive species are one of the main threats to global biodiversity and, within marine ecosystems, tunicates feature some prominent examples. Styela plicata is an ascidian inhabiting harbors in all temperate oceans and seas, thus being considered a thriving invasive species. However, this species' adaptive mechanisms, introduction history, population structure have never been completely elucidated. Here, by genotyping 87 S. individuals from 18 localities worldwide with 2b-RADseq, we confirm presence four chromosome inversions, demonstrate structuring on species, detect local adaptation signals, infer historical demographic events. The locality North Carolina constitutes utterly unrelated population, Atlanto-Mediterranean Pacific constitute their own genetic clusters, South presents intermediate position between other two groups. For each biogeographic highlight substructuring, most evident split Atlantic+Mediterranean Atlantic localities. We identify genomic drivers for adaptation, functions involved cell processes, metabolism, development, ion transport, among others. model ancient effective sizes, providing evidence three bottlenecks that could correspond different Finally, hybridization tests point having hybrid origin, likely resulting secondary contact populations. Overall, study highlights complex processes plicata, which led its current distribution, structure, footprint worldwide.

Language: Английский

Citations

0