Article (Scientific journals)
Multiple Pathways of Visual Adaptations for Water Column Usage in an Antarctic Adaptive Radiation
Yoder, Ella B; Parker, Elyse; Frederich, Bruno et al.
2025In Ecology and Evolution, 15 (3), p. 70867
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Keywords :
icefish; notothenioids; opsin; tuning site; Ecology, Evolution, Behavior and Systematics; Ecology; Nature and Landscape Conservation; macroevolution; Southern Ocean; phylogenetic comparative analyses; trait evolution
Abstract :
[en] Evolutionary transitions in water column usage have played a major role in shaping ray-finned fish diversity. However, the extent to which vision-associated trait complexity and water column usage is coupled remains unclear. Here we investigated the relationship between depth niche, eye size, and the molecular basis of light detection across the Antarctic notothenioid adaptive radiation. Integrating a phylogenetic comparative framework with data on eye size and depth occupancy, we provide support for an acceleration in the rate of eye size diversification nearly 20 million years after the initial radiation. Our results further reveal that levels of eye size divergence are often highest between closely related taxa. We further analyzed opsin tuning site sequences and found changes representing repeated instances of independent tuning site changes across the notothenioid phylogeny that are generally not associated with habitat depth or species eye size. Collectively, our results strongly support that multiple evolutionary pathways underlie the diversification of visual adaptations in this iconic adaptive radiation.
Research Center/Unit :
FOCUS - Freshwater and OCeanic science Unit of reSearch - ULiège
Disciplines :
Aquatic sciences & oceanology
Environmental sciences & ecology
Zoology
Author, co-author :
Yoder, Ella B;  Department of Bioinformatics and Genomics University of North Carolina at Charlotte Charlotte North Carolina USA ; Research Triangle High School Durham North Carolina USA
Parker, Elyse;  Department of Ecology and Evolutionary Biology Yale University New Haven Connecticut USA
Frederich, Bruno  ;  Université de Liège - ULiège > Freshwater and OCeanic science Unit of reSearch (FOCUS)
Tew, Alexandra;  Department of Bioinformatics and Genomics University of North Carolina at Charlotte Charlotte North Carolina USA
Jones, Christopher D;  Ecosystem Science Division NOAA Southwest Fisheries Science Center La Jolla California USA
Dornburg, Alex ;  Department of Bioinformatics and Genomics University of North Carolina at Charlotte Charlotte North Carolina USA
Language :
English
Title :
Multiple Pathways of Visual Adaptations for Water Column Usage in an Antarctic Adaptive Radiation
Publication date :
March 2025
Journal title :
Ecology and Evolution
eISSN :
2045-7758
Publisher :
John Wiley and Sons Ltd, England
Volume :
15
Issue :
3
Pages :
e70867
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 03 April 2025

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