Female dewlap ornaments are evolutionarily labile and associated with increased diversification rates in Anolis lizards DOI
Michael L. Yuan, Erin P. Westeen, Guinevere O. U. Wogan

et al.

Proceedings of the Royal Society B Biological Sciences, Journal Year: 2022, Volume and Issue: 289(1987)

Published: Nov. 16, 2022

The evolution of costly signalling traits has largely focused on male ornaments. However, our understanding ornament is necessarily incomplete without investigating the causes and consequences variation in female ornamentation. Here, we study Anolis lizard dewlap, a trait extensively studied as secondary sexual characteristic but present females several species. We characterized dewlaps for 339 species to test hypotheses about their evolution. Our results did not support hypothesis that are selected against throughout anole phylogeny. Rather, found were evolutionary labile. also find adaptive interspecific competition drove dewlaps. pleiotropy with larger reduced size dimorphism more likely possess Lastly, dewlap presence influenced diversification rates anoles, only secondarily hidden state. demonstrate ornamentation widespread anoles traditional divergent selection between sexes does fully explain Instead, be subject complex non-adaptive forces.

Language: Английский

Evaluating testosterone as a phenotypic integrator: From tissues to individuals to species DOI Creative Commons
Sara E. Lipshutz, Elizabeth George, Alexandra B. Bentz

et al.

Molecular and Cellular Endocrinology, Journal Year: 2019, Volume and Issue: 496, P. 110531 - 110531

Published: July 31, 2019

Language: Английский

Citations

58
Female ornamentation is associated with elevated aggression and testosterone in a tropical songbird DOI Open Access
Erik D. Enbody, Jordan Boersma, Hubert Schwabl

et al.

Behavioral Ecology, Journal Year: 2018, Volume and Issue: 29(5), P. 1056 - 1066

Published: May 9, 2018

In males, testosterone plays a key role in ornament production and linking ornamentation with reproductive behaviors other traits to produce an integrated phenotype. Less is known about whether females couple testosterone, ornamentation, aggressive achieve female-specific combinations of traits. Ornamentation may be the result correlated expression male or female could arise as sex-specific selection pressures. Resolving between these alternatives necessary understand degree which acts on The White-shouldered Fairywren (Malurus alboscapulatus) provides useful context address questions because populations vary derived trait, whereas constant across both populations. We found that ornamented have higher levels circulating respond more aggressively experimental territorial intrusions than do unornamented females. These findings are consistent idea that, among Fairywrens, mechanistically link plumage behavioral competitive phenotype, has been reported for males closely related species. contrast, did not differ significantly More broadly, our ongoing mechanisms underlying ornaments, likely via social selection.

Language: Английский

Citations

43
Testosterone regulates CYP2J19 -linked carotenoid signal expression in male red-backed fairywrens ( Malurus melanocephalus ) DOI Creative Commons
Sarah Khalil, Joseph F. Welklin, Kevin J. McGraw

et al.

Proceedings of the Royal Society B Biological Sciences, Journal Year: 2020, Volume and Issue: 287(1935), P. 20201687 - 20201687

Published: Sept. 16, 2020

Carotenoid pigments produce most red, orange and yellow colours in vertebrates. This coloration can serve as an honest signal of quality that mediates social mating interactions, but our understanding the underlying mechanisms control carotenoid production, including how different physiological pathways interact to shape maintain these signals, remains incomplete. We investigated role testosterone mediating gene expression associated with a red plumage sexual red-backed fairywrens (

Language: Английский

Citations

33
Testosterone Coordinates Gene Expression Across Different Tissues to Produce Carotenoid-Based Red Ornamentation DOI Creative Commons
Sarah Khalil, Erik D. Enbody,

Carolina Frankl‐Vilches

et al.

Molecular Biology and Evolution, Journal Year: 2023, Volume and Issue: 40(4)

Published: March 13, 2023

Abstract Carotenoid pigments underlie most of the red, orange, and yellow visual signals used in mate choice vertebrates. However, many underlying processes surrounding production carotenoid-based traits remain unclear due to complex nature carotenoid uptake, metabolism, deposition across tissues. Here, we leverage ability experimentally induce a red plumage patch red-backed fairywren (Malurus melanocephalus), songbird which is an important male sexual signal. We elevated testosterone unornamented males lacking ornamentation compared gene expression both liver feather follicles between control males, testosterone-implanted naturally ornamented males. show that upregulates CYP2J19, known be involved ketocarotenoid putative processing (ELOVL6) liver, also regulates transporter genes on back, including ABCG1. In black feathers, carotenoid-related are downregulated melanin upregulated, but find carotenoids still present feathers. This may activity carotenoid-cleaving enzyme BCO2 Our study provides first working model pathway for trait free-living birds, implicates as key regulator carotenoid-associated expression, suggests hormones coordinate these multiple

Language: Английский

Citations

12
An illustrated key for identification of colour aberrations in alcids with a revision of nomenclature used DOI Creative Commons
Karolina Cieślińska, Philippe Bodson,

Ellis Gruber

et al.

The European Zoological Journal, Journal Year: 2025, Volume and Issue: 92(1), P. 238 - 257

Published: Jan. 27, 2025

Language: Английский

Citations

0
The evolutionary history and mechanistic basis of female ornamentation in a tropical songbird DOI Creative Commons
Erik D. Enbody, Simon Yung Wa Sin, Jordan Boersma

et al.

Evolution, Journal Year: 2022, Volume and Issue: 76(8), P. 1720 - 1736

Published: June 24, 2022

Ornamentation, such as the showy plumage of birds, is widespread among female vertebrates, yet evolutionary pressures shaping ornamentation remain uncertain. In part this due to a poor understanding mechanistic route in females. To address issue, we evaluated history ornament expression tropical passerine bird, White-shouldered Fairywren, whose females, but not males, strongly vary between populations occurrence ornamented black-and-white plumage. We first use phylogenomic analysis demonstrate that derived and evolves independently changes male then exogenous testosterone field experiment induce partial naturally unornamented By sequencing transcriptome experimentally induced natural feathers, identify genes expressed during production evaluate degree which system associated with elevated testosterone, common males. reveal some females linked sexes differ ornament-linked gene expression. Lastly, using genomic outlier candidate melanogenesis lies region high divergence also differentially feather follicles different plumages. Taken together, these findings are consistent sex-specific selection favoring evolution ornaments key role for generating population through regulation. More broadly, our work highlights similarities differences how sexes.

Language: Английский

Citations

16
Effects of testosterone on gene expression are concordant between sexes but divergent across species of Sceloporus lizards DOI
Christopher D. Robinson, Matthew D. Hale, Christian L. Cox

et al.

The American Naturalist, Journal Year: 2024, Volume and Issue: 204(5), P. 517 - 532

Published: July 15, 2024

AbstractHormones mediate sexual dimorphism by regulating sex-specific patterns of gene expression, but it is unclear how much this regulation involves hormone levels versus transcriptomic responses to the same hormonal signal. Moreover, hormones can evolve, extent which pleiotropy in conserved across closely related species not well understood. We addressed these issues elevating testosterone juvenile females and males three

Language: Английский

Citations

3
Variation in song system anatomy and androgen levels does not correspond to song characteristics in a tropical songbird DOI
Hubert Schwabl, Jenélle L. Dowling, Daniel T. Baldassarre

et al.

Animal Behaviour, Journal Year: 2015, Volume and Issue: 104, P. 39 - 50

Published: April 9, 2015

Language: Английский

Citations

27
Testosterone induces plumage ornamentation followed by enhanced territoriality in a female songbird DOI Open Access
Jordan Boersma, Erik D. Enbody, John Anthony Jones

et al.

Behavioral Ecology, Journal Year: 2020, Volume and Issue: 31(5), P. 1233 - 1241

Published: Aug. 4, 2020

Abstract We know little of the proximate mechanisms underlying expression signaling traits in female vertebrates. Across males, sexual and competitive traits, including ornamentation aggressive behavior, is often mediated by testosterone. In white-shouldered fairywren (Malurus alboscapulatus) New Guinea, females different subspecies differ presence or absence white shoulder patches melanic plumage, whereas males are uniformly ornamented. Previous work has shown that ornamented circulate more testosterone exhibit territorial aggression than do unornamented females. investigated degree to which regulates ornamental plumage behavior implanting free-living with Every testosterone-treated produced a male-like cloacal protuberance, 15 20 replaced experimentally plucked brown patch feathers but did not typically produce characteristic Testosterone treatment elevate prior production ornament during active life implant. However, induced ornamentation, exhausted implants, increased vocal components territory defense relative pretreatment period also testosterone-implanted ornamentation. Our results suggest induces partial acquisition phenotype expression, rather alone, elevations some behaviors.

Language: Английский

Citations

21
Production of plumage ornaments among males and females of two closely related tropical passerine bird species DOI Creative Commons
Erik D. Enbody,

Samantha M. Lantz,

Jordan Karubian

et al.

Ecology and Evolution, Journal Year: 2017, Volume and Issue: 7(11), P. 4024 - 4034

Published: April 25, 2017

Abstract The evolution of elaborate secondary sexual traits (i.e., ornaments) is well‐studied in males but less so females. Similarity the appearance ornaments between and females supports view that female arise as a neutral byproduct selection on male due to genetic correlation sexes, recent research suggests an adaptive function at least some contexts. Information degree which production differs sexes can shed light these alternative perspectives. We therefore characterized structural underpinnings melanin‐based plumage two closely related passerine bird species (genus Malurus ). Importantly, both ornamented unornamented phenotypes each sex are present species, providing opportunity test null expectation equivalent modes phenotypes. In alboscapulatus , qualitatively similar males, we describe distinctive phenotype from lacking blue sheen lower feather barbule density. M. melanocephalus also appearance, similarity color underlying structure pigment composition. Unornamented flexibly transition weeks, found extreme differences These results contradict idea have evolved this system following simple switch male‐like by demonstrating greater complexity than

Language: Английский

Citations

22