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Metric-dependent genomic diversity reveals phylogenetic and ecological structure in saproxylic beetles

Year: 2026
Type: preprint
Abstract: Comparative studies can reach different conclusions when genomic-diversity metrics use different denominators. We analysed standardized ddRAD-seq data from 759 individuals, 149 species-by-site population records and 26 saproxylic beetle species across eight Polish forest complexes. Species identity and sampling hierarchy explained most population-level variation. Deciduous-associated species had higher variant-site expected heterozygosity than conifer-associated species. All-position nucleotide diversity showed stable phylogenetic signal, whereas occurrence tier and exploratory forest-management and protection contrasts showed no consistent associations. Genomic-diversity metrics are not interchangeable; comparative assessments should report their denominator and test lineage sensitivity.
DOI: 10.64898/2026.08.30.748084
Authors: Rama Sarvani Krovi, Nermeen R. Amer, Alicja Wierzbicka, Radosław Plewa, Marcin Kadej, Tomasz Jaworski, Adrian Smolis, Tomasz Szmatoła, Maria Oczkowicz, Łukasz Kajtoch
Institutions: Institute of Systematics and Evolution of Animals, Polish Academy of Sciences, Cairo University, National Research Institute of Animal Production, Instytut Badawczy Leśnictwa, University of Wrocław, University of Agriculture in Krakow
Language: English
Subfield: Genetics
Open Access status: green
OpenAlex ID: W7208741731
Cites: 48
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Related to: 10