Published April 13, 2026 | Version 2

Replicated radiations reveal temporally structured macroevolutionary dynamics

  • 1. ROR icon University of Oxford
  • 2. ROR icon University of Basel
  • 3. EDMO icon University of Basel, Department of Environmental Sciences
  • 4. ROR icon Hasselt University
  • 5. ROR icon KU Leuven
  • 6. ROR icon Royal Museum for Central Africa
  • 7. ROR icon Yale Peabody Museum
  • 8. American Museum of Natural History
  • 9. Sengabay Capture Fisheries Research Center, P.O. Box 316, Salima, Malawi

Description

We present a dataset of vertebral counts, body shape measurements, and lateral radiographs for 4861 individuals representing 583 species of African cichlids. This comprehensive dataset captures the full range of axial phenotypic diversity across African cichlids.  

------UPDATED 13/04/2026------

RDS files for associated code were updated. Old RDS objects should be discarded from any analysis reruns.

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Please see the README.pdf file for full descriptions of each data file deposited here. Do not hesitate to contact me at callum.bucklow@biology.ox.ac.uk/c.v.bucklow@gmail.com for further information.

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Acknowledgements

This research was supported by a Biotechnology and Biological Sciences Research Council (BBSRC) studentship (Grant No. 2445747), the John Fell Fund at the University of Oxford (Grant No. 0009780), a European Research Council Starting Grant (No. 101163722, Counts), and grants from the Swiss National Science Foundation (SNSF; Nos. 176039 and 208002). We thank Richard Durbin for the $\mu$CT-scans of the specimens in the CAMZM collection used in this study that were $\mu$CT-scanned at the Cambridge Biotomography Centre. Specimens were collected ethically under prescribed permits, and the results and data are published under an Access and Benefit Sharing agreement with the Government of Malawi. We acknowledge the contributions of Hannes Svardal, Karl Svardal, Richard Zatha, Bosco Rusuwa, George Turner and colleagues, and the Malawi Department of Fisheries and the Government of Malawi for their assistance in the collection of samples.

Files

all_specimens_vertebral_counts_body_aspect_ratios.csv

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Additional details

Related works

Is cited by
Preprint: 10.1101/2025.05.23.655800 (DOI)
Is published in
Preprint: 10.1101/2025.05.13.653847 (DOI)

Funding

UK Research and Innovation
Combining experimental embryology and geometric morphometrics to uncover the evolution of vertebral variability in Lake Malawi cichlids 2445747
Swiss National Science Foundation
The genomic basis of divergence and convergence in fish species-flocks 176039
Swiss National Science Foundation
The evolutionary and ecological context of adaptive radiation in cichlid and other fishes from Lake Tanganyika 208002
European Commission
COUNTS - Evolving increased vertebral counts: Developmental mechanisms underpinning phenotypic evolution in the Lake Malawi cichlid radiation. 101163722
University of Oxford
John Fell Fund (JFF) 0009780
Royal Society
RGS\R1\211324

Software