The repeated evolution of stripe patterns is correlated with body morphology in the adaptive radiations of East African cichlid fishes

Urban, Sabine; Gerwin, Jan; Hulsey, Christopher Darrin; Meyer, Axel; Kratochwil, Claudius F.

The repeated evolution of stripe patterns is correlated with body morphology in the adaptive radiations of East African cichlid fishes

Dateien

Urban_2-1s5w4zuan9k7n7.pdfGröße: 2.06 MBDownloads: 109

Datum

2022

Open Access-Veröffentlichung

Open Access Gold

Sammlungen

Biologie

Publikationstyp

Zeitschriftenartikel

Publikationsstatus

Published

Erschienen in

Ecology and Evolution. Wiley. 2022, 12(2), e8568. eISSN 2045-7758. Available under: doi: 10.1002/ece3.8568

Zusammenfassung

Color patterns are often linked to the behavioral and morphological characteristics of an animal, contributing to the effectiveness of such patterns as antipredatory strategies. Species-rich adaptive radiations, such as the freshwater fish family Cichlidae, provide an exciting opportunity to study trait correlations at a macroevolutionary scale. Cichlids are also well known for their diversity and repeated evolution of color patterns and body morphology. To study the evolutionary dynamics between color patterns and body morphology, we used an extensive dataset of 461 species. A phylogenetic supertree of these species shows that stripe patterns evolved ~70 times independently and were lost again ~30 times. Moreover, stripe patterns show strong signs of correlated evolution with body elongation, suggesting that the stripes' effectiveness as antipredatory strategy might differ depending on the body shape. Using pedigree-based analyses, we show that stripes and body elongation segregate independently, indicating that the two traits are not genetically linked. Their correlation in nature is therefore likely maintained by correlational selection. Lastly, by performing a mate preference assay using a striped CRISPR-Cas9 mutant of a nonstriped species, we show that females do not differentiate between striped CRISPR mutant males and nonstriped wild-type males, suggesting that these patterns might be less important for species recognition and mate choice. In summary, our study suggests that the massive rates of repeated evolution of stripe patterns are shaped by correlational selection with body elongation, but not by sexual selection.

Fachgebiet (DDC)

570 Biowissenschaften, Biologie

Schlagwörter

body morphology, convergence, CRISPR-Cas9 cichlid, motion dazzle, pigmentation, trait correlation

Zitieren

ISO 690

URBAN, Sabine, Jan GERWIN, Christopher Darrin HULSEY, Axel MEYER, Claudius F. KRATOCHWIL, 2022. The repeated evolution of stripe patterns is correlated with body morphology in the adaptive radiations of East African cichlid fishes. In: Ecology and Evolution. Wiley. 2022, 12(2), e8568. eISSN 2045-7758. Available under: doi: 10.1002/ece3.8568

BibTex

@article{Urban2022-02repea-56626,
  year={2022},
  doi={10.1002/ece3.8568},
  title={The repeated evolution of stripe patterns is correlated with body morphology in the adaptive radiations of East African cichlid fishes},
  number={2},
  volume={12},
  journal={Ecology and Evolution},
  author={Urban, Sabine and Gerwin, Jan and Hulsey, Christopher Darrin and Meyer, Axel and Kratochwil, Claudius F.},
  note={Article Number: e8568}
}

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