Potential of genomic selection for growth, meat content and colour traits in mixed-family breeding designs for the Pacific oyster Crassostrea gigas

Aquaculture, Journal Year: 2023, Volume and Issue: 576, P. 739878 - 739878

Published: July 8, 2023

Language: Английский

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Genomic selection for resistance to one pathogenic strain of Vibrio splendidus in blue mussel Mytilus edulis

Frontiers in Genetics, Journal Year: 2025, Volume and Issue: 15

Published: Jan. 3, 2025

The blue mussel is one of the major aquaculture species worldwide. In France, this faces a significant threat from infectious disease outbreaks in both farms and natural environment over past decade. Diseases caused by various pathogens, particularly Vibrio spp., have posed challenge to industry. Genetic improvement resistance can be an effective approach overcoming issue. work, we tested genomic selection (Mytilus edulis) understand genetic basis pathogenic strain splendidus (strain 14/053 2T1) predict accuracy using pedigree information. Additionally, performed genome-wide association study (GWAS) identify putative QTLs underlying resistance. We conducted experimental infection involving 2,280 mussels sampled 24 half-sib families containing each two full-sib which were injected with V. splendidus. Dead survivor all sampled, among them, 348 dead surviving genotyped recently published multi-species medium-density 60K SNP array. From potentially 23.5K SNPs for M. edulis present on array, identified 3,406 high-quality SNPs, out 2,204 successfully mapped onto reference genome. Heritability was moderate ranging 0.22 0.31 pedigree-based model 0.28 0.36 genomic-based model. GWAS revealed polygenic architecture trait mussel. models studied showed overall better performance than terms breeding values prediction. This work provides insights into exemplifies potential family-based programs edulis.

Language: Английский

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Particle tracking modelling in coastal marine environments: Recommended practices and performance limitations

Ecological Modelling, Journal Year: 2025, Volume and Issue: 501, P. 110999 - 110999

Published: Jan. 20, 2025

Language: Английский

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The Intertidal North‐South Split: Oceanographic Features and Life History Shape the Phylogeography of Chiton Acanthochitona rubrolineata

Evolutionary Applications, Journal Year: 2025, Volume and Issue: 18(4)

Published: March 31, 2025

ABSTRACT The genetic structure and demographic history of marine organisms are shaped by a variety factors including biological ecological characteristics, ocean currents, the palaeogeological effects sea‐level fluctuations. Here we present comprehensive method combining population genomics, laboratory experiments, modelling in 13 populations chiton Acanthochitona rubrolineata along coast China. Based on genomic analyses, significant divergence was observed between Northern Southern groups, which separated Yangtze River Estuary. numerical circulation model simulation showed that gene flow connectivity were strongly influenced currents larval dispersal ability A. . These data thus clearly revealed presence two separately evolving lineages chiton— northern southern. Our study highlights robust understanding intertidal zone requires consideration influence structure, life‐history traits, coastal geographic isolation, habitat suitability. life organisms, together with local oceanographic features, could ultimately drive lead to speciation. findings provide guideline for future analyses non‐model potentially threatened species will aid conservation biodiversity.

Language: Английский

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Signatures of Selection for Resistance/Tolerance to Perkinsus olseni in Grooved Carpet Shell Clam (Ruditapes decussatus) Using a Population Genomics Approach

Evolutionary Applications, Journal Year: 2025, Volume and Issue: 18(5)

Published: May 1, 2025

ABSTRACT The grooved carpet shell clam ( Ruditapes decussatus ) is a bivalve of high commercial value distributed throughout the European coast. Its production has suffered decline caused by different factors, especially parasite Perkinsus olsenii . Improving R requires genomic resources to ascertain genetic factors underlying resistance/tolerance P. olseni i In this study, first reference genome was assembled through long‐ and short‐read sequencing (1677 contigs; 1.386 Mb) further scaffolded at chromosome level with Hi‐C (19 superscaffolds; 95.4% assembly). Repetitive elements were identified (32%) masked for annotation 38,276 coding‐ 13,056 non‐coding genes. This used as develop 2bRAD‐Seq 13,438 SNP panel screening on six shellfish beds across Atlantic Ocean Mediterranean Sea. Beds selected perkinsosis prevalence infection individually evaluated in all samples. Genetic diversity significantly higher than region. main breakage detected between those regions (F ST = 0.224), being more heterogeneous Atlantic. Several loci under divergent selection (394 outliers; 261 windows) beds. Samples also inspected detect signals using infection‐level population‐genomics approaches, 90 common outliers gene mining. Candidate genes markers provide invaluable information controlling improving clam.

Language: Английский

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Genomic survey of edible cockle (Cerastoderma edule) in the Northeast Atlantic: A baseline for sustainable management of its wild resources

Evolutionary Applications, Journal Year: 2021, Volume and Issue: 15(2), P. 262 - 285

Published: Dec. 28, 2021

Knowledge on correlations between environmental factors and genome divergence populations of marine species is crucial for sustainable management fisheries wild populations. The edible cockle (

Language: Английский

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Heterogeneous microgeographic genetic structure of the common cockle (Cerastoderma edule) in the Northeast Atlantic Ocean: biogeographic barriers and environmental factors

Heredity, Journal Year: 2023, Volume and Issue: 131(4), P. 292 - 305

Published: Aug. 18, 2023

Language: Английский

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A single genomic region involving a putative chromosome rearrangement in flat oyster (Ostrea edulis) is associated with differential host resilience to the parasite Bonamia ostreae

Evolutionary Applications, Journal Year: 2022, Volume and Issue: 15(9), P. 1408 - 1422

Published: July 6, 2022

European flat oyster (

Language: Английский

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Genetic markers associated with divergent selection against the parasite Marteilia cochillia in common cockle (Cerastoderma edule) using transcriptomics and population genomics data

Frontiers in Marine Science, Journal Year: 2023, Volume and Issue: 10

Published: April 4, 2023

The common cockle (Cerastoderma edule) plays an important role in marine ecosystems and represents a valuable socioeconomic resource for coastal communities. In 2012, the beds from Rı́a de Arousa (Galicia, NW Spain) were seriously decimated by protozoan Marteilia cochillia responsible marteiliosis. We aimed to identify single nucleotide polymorphisms (SNP) markers potentially associated with resilience marteiliosis be used marker-assisted selection programs restoring affected recovering their production. For this, we carried out population genomics approach using 2b-RADseq, where 38 naive samples (before first detection of M. 2012) two compared 39 collected 2018/2019 (after several years occurring area), either before (15 non-exposed samples) or during (24 exposed outbreak. Additionally, 767 differentially expressed genes (DEG) previous transcriptomic study addressed aforementioned 2018/19 outbreak, evaluated SNPs showing signals selection. Using 9,154 genotyped among them, 110 consistent outliers divergent identified. This set was able discriminate according status (naive vs affected; non-exposed), while another 123 identified linked DEGs level infection across temporal series. Finally, combining transcriptomics information, selected 60 most reliable resilience. These close within DEGs, many them related immune response (phagocytosis cell adhesion), defence, such as apoptosis, stress, cellular cycle, other functions. will eventually validated develop cost-effective genotyping tool application obtaining cockle-resilient strains

Language: Английский

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Assessing the demographic connectivity of common cockles in a shallow estuary as a basis for fisheries management and stock protection efforts

Marine Ecology Progress Series, Journal Year: 2023, Volume and Issue: 731, P. 293 - 313

Published: March 30, 2023

Common cockle Cerastoderma edule populations in the Danish Limfjorden constitute an important ecosystem component and a valuable resource for fishermen industries, providing large proportion of landings both Denmark European Union. However, processes driving recruitment mortality are not well understood, prevent sustainable fisheries management species protection efforts. We report thorough study that main drivers population recruitment, namely larval dispersal settlement. Outputs from biophysical modelling dispersal, connectivity analysis derived graph theory metrics were used to analyse potential demographic or isolation between known other parts Limfjorden. The results show most productive commercially beds almost exclusively dependent on imports unexploited spawning biomass elsewhere rather than self-recruitment, allowing exploitation levels would be unsustainable otherwise. Other relatively isolated, relying mostly self-recruitment. also some areas where predicted settlement potentials highest, absence indicates factors, likely environmental, more important. This provides example contrasting dynamics connectivity, suggesting vulnerability natural may highly variable interlinked. Ignoring affecting jeopardise highlights importance understanding marine bivalve management.

Language: Английский

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