ArticleMobile DNA2026
The extraordinary satellitome diversity of freshwater crayfish: a driver of genome evolution.
Article in Mobile DNA, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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1 citing paper in PubMed.
- Cytogenomics of the Flea BeetleGenes · 2026Article
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Authors and funding
13 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundRepetitive elements, particularly satellite DNA (satDNA), play a significant role in genome evolution and organisation. However, their diversity and evolutionary dynamics remain poorly understood in non-model organisms. Freshwater crayfish (Decapoda, Astacidea) have large genomes with a high chromosome number and are rich in satDNAs. This makes them attractive for studying the impact of satDNA on genome evolution.
resultsIn this study, we investigated the repetitive genomic landscape of 19 species representing four freshwater crayfish families. Our analysis revealed a high proportion of repetitive DNA in all studied species, with the total repeat content ranging from 30% to 66%. The number of satDNA families was remarkably high (54–622 families per species), with minisatellites (< 100 bp) forming the largest component of the satellitome. Family-specific patterns emerged: Astacidae and Cambaroididae showed the highest satDNA proportions, while Cambaridae and Parastacidae were dominated by Class I transposable elements. Species of the family Parastacidae showed the largest number of unique satDNA clusters and were clearly separated from other families, reflecting their phylogenetic divergence and distinct biogeographic history. We identified specific satDNAs conserved across all species, among them the PlSAT3-411, pointing to their important functional roles as pericentromeric satDNA.
conclusionThis study provides the first comprehensive comparative analysis of satDNA in freshwater crayfish. Our results highlight the dynamic nature of repetitive DNA and underscore its importance in genome organisation and evolutionary history.
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