期刊
EVOLUTION
卷 76, 期 6, 页码 1195-1208出版社
OXFORD UNIV PRESS
DOI: 10.1111/evo.14482
关键词
Activity times; ancestral state reconstruction; macroevolution; MCMCglmm; phylogenetic ordinal regression; Scincidae
资金
- Australian Friends of Tel Aviv-Monash University Research Collaboration Award
- Australian Research Council [FT200100108]
- Holsworth Wildlife Research Endowment - Equity Trustees Charitable Foundation
- Ecological Society of Australia
- Royal Society [RGF\EA\181082]
- Monash-Museums Victoria Robert Blackwood scholarship
- Australian Research Council [FT200100108] Funding Source: Australian Research Council
This study used phylogenetic comparative methods to examine the evolutionary history of diel activity in skinks. The results showed the association between diel patterns and microhabitat, ambient temperatures, and morphology. The study also revealed the relationship between nocturnal habits and fossorial activity, limb reduction and loss, and warm temperatures.
Many animals have strict diel activity patterns, with unique adaptations for either diurnal or nocturnal activity. Diel activity is phylogenetically conserved, yet evolutionary shifts in diel activity occur and lead to important changes in an organism's morphology, physiology, and behavior. We use phylogenetic comparative methods to examine the evolutionary history of diel activity in skinks, one of the largest families of terrestrial vertebrates. We examine how diel patterns are associated with microhabitat, ambient temperatures, and morphology. We found support for a nondiurnal ancestral skink. Strict diurnality in crown group skinks only evolved during the Paleogene. Nocturnal habits are associated with fossorial activity, limb reduction and loss, and warm temperatures. Our results shed light on the evolution of diel activity patterns in a large radiation of terrestrial ectotherms and reveal how both intrinsic biotic and extrinsic abiotic factors can shape the evolution of animal activity patterns.
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