ArticleBiology direct2026
The role of satellite DNAs in repeatome organization and sex chromosome evolution in the owl monkey Aotus infulatus and congeneric species.
Article in Biology direct, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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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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6 authors.
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Abstract
backgroundMultiple sex chromosome systems provide exceptional models for investigating the genomic mechanisms underlying sex chromosome evolution. In Neotropical primates, owl monkeys (Aotus) are notable for their extensive karyotypic diversity and recurrent emergence of complex sex chromosome systems. Here, we present a comprehensive cytogenomic analysis of the repeatome of Aotus infulatus, a species exhibiting an X
resultsRepetitive sequences account for approximately 37% of the A. infulatus genome, with satellite DNAs (satDNAs) representing the most variable component among species. Nine satDNA families were identified in A. infulatus, most of which show high sequence conservation across Aotus, consistent with a shared ancestral repeat library followed by lineage-specific amplification. Comparative analyses between sexes revealed a modest enrichment of satDNAs in the male genome. Fluorescence in situ hybridization uncovered differential chromosomal distributions of several satellites, including sex-biased accumulation on the X
conclusionsOur results demonstrate that repetitive DNA, particularly satDNAs, has played a central role in reshaping the sex chromosome architecture of A. infulatus. This study establishes Aotus as a compelling primate model for investigating the genomic consequences of sex chromosome fusion and highlights the importance of repeatome dynamics in the evolution of multiple sex chromosome systems.
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