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Do we need to sequence all algal type specimens?
Olivier De Clerck1, Frederik Leliaert2, Silke Bouckenooghe1
1Research Group Phycology, Biology Department, Ghent University, Ghent, Belgium.
Journal of Phycology
|August 12, 2026
Summary
Sequencing algal type specimens can clarify taxonomy but may not ensure long-term stability. Alternative methods like epitypification and name protection are needed for stable algal nomenclature.
Area of Science:
- Phycology
- Taxonomy
- Molecular Biology
Background:
- Nomenclatural uncertainties in algae, especially Ulva, are being addressed by sequencing type specimens.
- Sequencing type specimens links historical names to modern molecular data, aiding species identification.
Purpose of the Study:
- To evaluate the feasibility and long-term impact of comprehensive type sequencing for algal nomenclature.
- To discuss the balance between taxonomic accuracy, scientific advancement, and nomenclatural stability in algae.
- To explore alternative nomenclatural mechanisms for enhancing stability.
Main Methods:
- Review of recent studies on sequencing algal type specimens.
- Analysis of the International Code of Nomenclature for algae.
- Discussion of epitypification, conservation of names, and protection mechanisms.
Main Results:
- Type sequencing resolves some uncertainties but causes frequent name changes due to the principle of priority.
- A complete sequence-based framework faces challenges from historical name backlogs, new taxa, evolving concepts, and technical difficulties.
- Repeated changes can hinder biological knowledge accessibility.
Conclusions:
- Comprehensive type sequencing alone is unlikely to achieve lasting nomenclatural stability in algae.
- Alternative strategies such as epitypification, name conservation, and protection (for fungi) offer potential for greater stability.
- A community-wide reflection on balancing taxonomic precision with nomenclatural stability is crucial for the future of phycology.
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