What question did this study set out to answer?

The aim is to create a framework to identify and validate cryptic species using Lumbriculus variegatus as an example.

From Molecular Phylogenetics to Ecological Niche Modelling: Global Distribution Patterns and Evolutionary History of Lumbriculus variegatus (Annelida, Clitellata, Lumbriculidae)

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Reveals distinct evolutionary lineages in Lumbriculus variegatus, suggesting their ecological divergence and genomic differentiation.

The aim is to create a framework to identify and validate cryptic species using Lumbriculus variegatus as an example.
Developed a phylogeny-niche modelling workflow combining molecular and ecological data.
Used mitochondrial COI sequences for phylogenetic analysis and haplotype networking.
Constructed MaxEnt ecological niche models to assess historical distribution under different climate scenarios.
Conducted flow cytometry for genome size estimates to validate lineage divergence.
Identified two distinct lineages of Lumbriculus variegatus, CI and CII, with significant genetic distance.
Lineage CI occupies warm-humid environments while CII thrives in cooler, high-altitude regions.
Historical projections showed unique refugia and expansion pathways, indicating ecosystem changes over time.
Found a significant ninefold difference in genome size, supporting the distinct status of each lineage.

Zhou et al. (2026) studied this question.

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View Full Paper

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Authors

Reveals distinct evolutionary lineages in Lumbriculus variegatus, suggesting their ecological divergence and genomic differentiation.

The aim is to create a framework to identify and validate cryptic species using Lumbriculus variegatus as an example.
Developed a phylogeny-niche modelling workflow combining molecular and ecological data.
Used mitochondrial COI sequences for phylogenetic analysis and haplotype networking.
Constructed MaxEnt ecological niche models to assess historical distribution under different climate scenarios.
Conducted flow cytometry for genome size estimates to validate lineage divergence.
Identified two distinct lineages of Lumbriculus variegatus, CI and CII, with significant genetic distance.
Lineage CI occupies warm-humid environments while CII thrives in cooler, high-altitude regions.
Historical projections showed unique refugia and expansion pathways, indicating ecosystem changes over time.
Found a significant ninefold difference in genome size, supporting the distinct status of each lineage.

Zhou et al. (2026) studied this question.

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