Climate differently influences the genomic patterns of two sympatric marine fish species

Journal of Animal Ecology, Год журнала: 2021, Номер 91(6), С. 1180 - 1195

Опубликована: Окт. 30, 2021

Climate influences population genetic variation in marine species. Capturing these impacts remains challenging for fishes which disperse over large geographical scales spanning steep environmental gradients. It requires the extensive spatial sampling of individuals or populations, representative seascape heterogeneity, combined with a set highly informative molecular markers capable revealing climatic-associated variations. We explored how space, dispersal and environment shape genomic patterns two sympatric fish species Mediterranean Sea, ranks among oceanic basins most affected by climate change human pressure. hypothesized that structure climate-associated signatures selection would be stronger less mobile species, as restricted gene flow tends to facilitate fixation locally adapted alleles. To test our hypothesis, we genotyped contrasting abilities: white seabream Diplodus sargus striped red mullet Mullus surmuletus. collected 823 used genotyping sequencing (GBS) detect 8,206 single nucleotide polymorphisms (SNPs) 2,794 mullet. For each identified differentiated regions (i.e. outliers) disentangled relative contribution variables (climate, primary productivity) on outliers' prevalence local adaptation. observed adaptive between The showed distinct Alboran sea panmixia across Sea. revealed additional differentiation within Sea was significantly correlated summer winter temperatures, well productivity. Functional annotation outlier SNPs then candidate genes involved heat tolerance could examined further predict species' responses change. Our results illustrate key steps comparative genomics study aiming unravel evolutionary processes at play better anticipate their response Defining adaptation capacities niches can serve incorporate into conservation planning.

Язык: Английский

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Seascape Genomics and Phylogeography of the Sailfish (Istiophorus platypterus)

Genome Biology and Evolution, Год журнала: 2023, Номер 15(4)

Опубликована: Март 13, 2023

Abstract Permeable phylogeographic barriers characterize the vast open ocean, boosting gene flow and counteracting population differentiation speciation of widely distributed migratory species. However, many species consists distinct populations throughout their distribution, evidencing that our understanding how marine environment triggers divergence are insufficient. The sailfish is a circumtropical highly billfish inhabits warm productive areas. Despite its ecological socioeconomic importance as predator fishery resource, threatened by overfishing, requiring innovative approaches to improve management conservation status. Thus, we presented novel high-quality reference genome for applied seascape genomics approach understand environmental features may promote local adaptation it affects between populations. We delimit two Atlantic Indo-Western Pacific oceans detect outlier loci correlated with sea surface temperature, salinity, oxygen, chlorophyll concentrations. most significant explanatory factor explains differences was isolation distance. recent drops, not inbred. For billfishes in general, genome-wide heterozygosity found be relatively low compared other fishes, need counteract overfishing effects. In addition, climate change scenario, agencies must implement state-of-the-art sequencing methods, consider findings plans, monitor over time sustainable fisheries long-term viability

Язык: Английский

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Dispersive currents explain patterns of population connectivity in an ecologically and economically important fish

Evolutionary Applications, Год журнала: 2023, Номер 16(7), С. 1284 - 1301

Опубликована: Июнь 21, 2023

Abstract How to identify the drivers of population connectivity remains a fundamental question in ecology and evolution. Answering this can be challenging aquatic environments where dynamic lake ocean currents coupled with high levels dispersal gene flow decrease utility modern genetic tools. To address challenge, we used RAD‐Seq genotype 959 yellow perch ( Perca flavescens ), species an ~40‐day pelagic larval duration (PLD), collected from 20 sites circumscribing Lake Michigan. We also developed novel, integrative approach that couples detailed biophysical models eco‐genetic agent‐based generate “predictive” values differentiation. By comparing predictive empirical differentiation, estimated relative contributions for known (e.g., currents, behavior, PLD). For main basin populations (i.e., largest contiguous portion lake), found led low overall differentiation among F ST = 0.003). far best predictors were matrices derived periods time when there strong highly dispersive currents. Thus, these are driving patterns basin. northern southern slightly divergent one another, while those Green Bay 0.11). integrating genome‐wide data, illustrate identified systems.

Язык: Английский

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A multidisciplinary approach to describe population structure of Solea solea in the Mediterranean Sea

Frontiers in Marine Science, Год журнала: 2024, Номер 11

Опубликована: Май 1, 2024

Investigating marine species population structure in a multidisciplinary framework can reveal signatures of potential local adaptation and the consequences for management conservation. In this study we delineate common sole ( Solea solea ) Mediterranean Sea using genomic otolith data, based on single nucleotide polymorphism (SNPs) markers, shape trace element composition data. We correlated SNPs with environmental spatial variables to evaluate impact selected features actual structure. Specifically, used seascape genetics approach redundancy (RDA) genetic-environmental association (GEA) analysis identify loci potentially involved adaptation. Finally, putative functional annotation was investigated detect genes associated detected patterns neutral adaptive genetic variation. Results from both data suggested significant divergence among populations sole, confirming clear separation between Western Eastern Sea, as well distinct cluster corresponding Adriatic Sea. Evidence fine-scale observed at outlier level further differentiation Adriatic. Longitude salinity variation accounted most wide fine The GEA processes under highly structured differentiation. RDA distribution could partially explain Our not only indicates that is led primarily by because low connectivity due segregation limited dispersal, but it also suggests presence These results should be taken into account support optimize assessment stock units, including review possible redefinition fishery units.

Язык: Английский

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Spatial gradients of introgressed ancestry reveal cryptic connectivity patterns in a high gene flow marine fish

Molecular Ecology, Год журнала: 2020, Номер 29(20), С. 3857 - 3871

Опубликована: Авг. 28, 2020

Assessing genetic connectivity among populations in high gene flow species is sometimes insufficient to evaluate demographic connectivity. Genetic differentiation quickly becomes zero as soon a few dozen migrants are exchanged per generation. This provides little information determine whether migration can ensure coupling. The resulting difficulties delineating conservation units for the management of commercially exploited marine fish well illustrated case European sea bass (Dicentrarchus labrax). Previous attempts assess patterns northeast Atlantic have been hampered by lack spatial structure. In contrast, mark-recapture data suggested low rates between regional spawning areas. Here, we show how gradient introgressed Mediterranean ancestry across reflects cryptic and Using 1K SNP chip set 827 individuals sampled from Portugal North Sea, found null overall Atlantic. We however detected subtle latitudinal admixture originating at edge contact zone with lineage. Two significant breaks tip Galicia northern Brittany indicated barriers effective dispersal demographically distinct units. Moreover, northward expansion signal Irish Seas was revealed surfing rare alleles range. Our results that gradients offer powerful alternative when neutral migration-drift balance not informative.

Язык: Английский

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Contrasting influence of seascape, space and marine reserves on genomic variation in multiple species

Ecography, Год журнала: 2022, Номер 2023(1)

Опубликована: Ноя. 25, 2022

Marine reserves are being established worldwide to conserve and manage marine resources, also often assumed the evolutionary potential of populations. However, comparisons genomic patterns inside outside in multiple species scarce. Here, we aim fill this gap by 1) comparing variation protected versus unprotected areas a network eight Mediterranean Sea, 2) disentangling effect seascape, space on 1297 individuals from four genotyped at more than 10 000 SNPs each. We report homogeneous local genetic diversity within three (the white seabream Diplodus sargus , striped red mullet Mullus surmuletus European spiny lobster Palinurus elephas ). Surprisingly, comber Serranus cabrilla shows lower areas, highlighting an apparent conservation paradox that may be due increased predation fishes reserves. Multivariate analyses reveal seascape factors (salinity, temperature chlorophyll) exert significant influence some cases, while protection status has no detectable effect. Nevertheless, (Cabo de Palos, Cerbère‐Banyuls, Cap Creus Illes Columbretes) harbor singular one or two species. This pattern, observed species, suggests contribute preserve locally. Our study illustrates can document key aspects their interaction with factors, It stresses need for multi‐species approach inform planning, opening up new perspectives community level.

Язык: Английский

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Climate adaptation and vulnerability of foundation species in a global change hotspot

Molecular Ecology, Год журнала: 2023, Номер 32(8), С. 1990 - 2004

Опубликована: Янв. 16, 2023

Climate change is altering species ranges, and relative abundances within as populations become differentially adapted vulnerable to the climates they face. Understanding present whether harbour exchange adaptive variants, how variants are distributed across landscapes undergoing rapid change, therefore crucial predicting responses future informing conservation strategies. Such insights nonetheless lacking for most of concern. We assess genomic patterns neutral variation, climate adaptation vulnerability (offsets in predicted distributions putatively landscapes) sister foundation species, marine tubeworms Galeolaria caespitosa gemineoa, a sentinel region impacts. find that genetically isolated despite uncovering sympatry their show parallel nonparallel signals thermal on spatial scales smaller than gene flow face different risks maladaptation under temperatures ranges. Our findings have implications understanding local flow, generate spatially explicit predictions climatic disruption coastal ecosystems could guide experimental validation planning.

Язык: Английский

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Large effective population size masks population genetic structure in Hirondellea amphipods within the deepest marine ecosystem, the Mariana Trench

Molecular Ecology, Год журнала: 2023, Номер 32(9), С. 2206 - 2218

Опубликована: Фев. 18, 2023

The examination of genetic structure in the deep-ocean hadal zone has focused on divergence between tectonic trenches to understand how environment and geography may drive species promote endemism. There been little attempt examine localized within trenches, partly because logistical challenges associated with sampling at an appropriate scale, large effective population sizes that can be sampled adequately mask underlying structure. Here we superabundant amphipod Hirondellea gigas Mariana Trench depths 8126-10,545 m. RAD sequencing was used identify 3182 loci containing 43,408 single nucleotide polymorphisms (SNPs) across individuals after stringent pruning prevent paralogous multicopy genomic regions being erroneously merged. Principal components analysis SNP genotypes resolved no locations, consistent a signature panmixia. However, discriminant principal identified all sites driven by 301 outlier SNPs 169 significantly latitude depth. Functional annotation differences singleton pruned from data set also nonoutlier loci, hypotheses explaining role transposable elements driving genome dynamics. This study traditional perspective highly abundant amphipods trench form panmictic population. We discuss findings relation eco-evolutionary ontogenetic processes operating deep sea, highlight key nonmodel systems inherent genomes.

Язык: Английский

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Perspectives on the Grey Zone of Species Delimitation With Notes on Invertebrates in the Marine Environment

Bulletin of the Society of Systematic Biologists, Год журнала: 2023, Номер 2(2), С. 1 - 23

Опубликована: Окт. 4, 2023

Defining species boundaries, or delimiting species, is a complex and often difficult task. Indeed, when such studies incorporate approaches that consider evolutionary mechanisms, there much to be learned about diversity how the processes play critical roles in speciation can impact delineation. In 2021, virtual workshop on delimitation was held at Smithsonian Institution National Museum of Natural History train natural history scientists taxonomists appropriate analytical tools used help delimit using molecular data. This perspective highlights some main themes discussed during while detailing three challenge any study. Specifically, we discuss incomplete lineage sorting, gene flow, population structure boundaries We highlight empirical methodological have successfully met these challenges under various scenarios. Finally, provide recommendations considerations for undertaking variety taxa. To this end, recommend fully embrace process-based delimitation, which important insights into their study systems. For those developing approaches, hope they incorporating less well-known taxa, as marine invertebrates, method testing. Marine invertebrates encompass many dark taxa across tree life yet represent majority animal phyla, are vulnerable extinction due global ocean change. Thus, advancing address taxonomic revisions organisms will support conservation decisions keystone ecosystems. Furthermore, strategies, lack obvious barriers flow environment, occurrence isolated habitat patches better inform our knowledge role generating nature.

Язык: Английский

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Marine Population Genomics: Challenges and Opportunities

Population genomics, Год журнала: 2019, Номер unknown, С. 3 - 35

Опубликована: Янв. 1, 2019

Язык: Английский

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