Journal article
Bare parts in the Galliformes: the evolution of a multifunctional structure
ROYAL SOCIETY OPEN SCIENCE, v 11(1), 231695
10 Jan 2024
PMID: 38204797
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
A morphological trait can have multiple functions shaped by varying selective forces. Bare parts in birds, such as wattles, casques and combs, are known to function in both signalling and thermoregulation. Studies have demonstrated such structures are targets of sexual selection via female choice in several species of Galliformes (junglefowl, turkeys and grouse), though other studies have shown some role in thermoregulation (guineafowl). Here, we tested fundamental hypotheses regarding the evolution and maintenance of bare parts in Galliformes. Using a phylogeny that included nearly 90% of species in the order, we evaluated the role of both sexual and natural selection in shaping the function of bare parts across different clades. We found a combination of both environmental and putative sexually selected traits strongly predicted the variation of bare parts for both males and females across Galliformes. When the analysis is restricted to the largest family, Phasianidae (pheasants, junglefowl and allies), sexually selected traits were the primary predictors of bare parts. Our results suggest that bare parts are important for both thermoregulation and sexual signalling across Galliformes but are primarily under strong sexual selection within the Phasianidae.
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Details
- Title
- Bare parts in the Galliformes: the evolution of a multifunctional structure
- Publication Details
- ROYAL SOCIETY OPEN SCIENCE, v 11(1), 231695
- Publisher
- ROYAL SOC; LONDON
- Grant note
- We thank Scott Robinson, Brittaney Buchanan and Luis Daniel Montalvo for their valuable comments on this manuscript. We thank Ben Kolbus for digitizing the bird drawings. Megan Smith and Brackin Garlough measured the pixels from phasianid photos that were shared for comparison. This is publication number 38 of the Center for Biodiversity & Conservation Research at the University of Mississippi. We are grateful to the two anonymous reviewers for their comments that improved our paper.
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Drexel University
- Web of Science ID
- WOS:001138763300007
- Scopus ID
- 2-s2.0-85183703942
- Other Identifier
- 991021861196104721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Ecology