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Natural vs hatchery-based selection in common cockle Cerastoderma edule for resilience to Marteilia cochillia
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DOI：10.1016/j.aqrep.2026.103709.png)
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Abstract
En 中文
• Selected and wild cockles had similar outcomes and lower M. cochillia prevalence and mortality than the naïve strain. • Sixteen SNPs differentiated resilient from naïve cockles, sugesting their use in marker-assisted selection. • A SNP in E3 ubiquitin ligase HERC4 showed allele frequency shifts in all strains, suggesting selection after exposure. • STRUCTURE and DAPC showed clustering by strain and exposure status, supporting the genomic basis of resilience. • A single multiplex SNP panel can identify resilient cockles without requiring parasite exposure, supporting selective breeding.
Keywords:
Breeding program
Disease resistance
Mass-spawning
Marteiliosis outbreak
SNP markers
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