Skip to main content
Log in

The Effects of Ecological Traits on the Rate of Molecular Evolution in Ray-Finned Fishes: A Multivariable Approach

  • Original Article
  • Published:
Journal of Molecular Evolution Aims and scope Submit manuscript

Abstract

Myriad environmental and biological traits have been investigated for their roles in influencing the rate of molecular evolution across various taxonomic groups. However, most studies have focused on a single trait, while controlling for additional factors in an informal way, generally by excluding taxa. This study utilized a dataset of cytochrome c oxidase subunit I (COI) barcode sequences from over 7000 ray-finned fish species to test the effects of 27 traits on molecular evolutionary rates. Environmental traits such as temperature were considered, as were traits associated with effective population size including body size and age at maturity. It was hypothesized that these traits would demonstrate significant correlations with substitution rate in a multivariable analysis due to their associations with mutation and fixation rates, respectively. A bioinformatics pipeline was developed to assemble and analyze sequence data retrieved from the Barcode of Life Data System (BOLD) and trait data obtained from FishBase. For use in phylogenetic regression analyses, a maximum likelihood tree was constructed from the COI sequence data using a multi-gene backbone constraint tree covering 71% of the species. A variable selection method that included both single- and multivariable analyses was used to identify traits that contribute to rate heterogeneity estimated from different codon positions. Our analyses revealed that molecular rates associated most significantly with latitude, body size, and habitat type. Overall, this study presents a novel and systematic approach for integrative data assembly and variable selection methodology in a phylogenetic framework.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5

Similar content being viewed by others

Code Availability

The source code used for this research is available at https://github.com/jmay29/phylo.

Data Availability

All sequence and trait data used are available as supplementary material for this article.

References

Download references

Acknowledgements

We thank Dr. Robert Hanner for his advice regarding the processing and analyzing of fish barcode sequence data. We would like to thank the many contributors of sequence and trait data to BOLD and FishBase, respectively. Finally, we would like to thank three anonymous reviewers for their invaluable insight and suggestions for improving this manuscript.

Funding

This work was supported by Discovery Grants from the Natural Sciences and Engineering Research Council of Canada (NSERC) (2016–06199 to S.J.A and 400095 to Z.F) and by a grant in Bioinformatics and Computational Biology (15401) from the Government of Canada through Genome Canada and Ontario Genomics (to S.J.A., Z.F., et al.). Additionally, this study represents a contribution to the “Food from Thought” research program led by the University of Guelph and supported through the Canada First Research Excellence Fund.

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to Jacqueline A. May.

Ethics declarations

Conflict of interest

The authors declare that they have no conflict of interest.

Additional information

Handling Editor: Joana Projecto-Garcia.

Electronic supplementary material

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

May, J.A., Feng, Z., Orton, M.G. et al. The Effects of Ecological Traits on the Rate of Molecular Evolution in Ray-Finned Fishes: A Multivariable Approach. J Mol Evol 88, 689–702 (2020). https://doi.org/10.1007/s00239-020-09967-9

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s00239-020-09967-9

Keywords

Navigation