Arid
DOI10.1007/s00265-015-1908-y
Effects of carotenoid supplementation and oxidative challenges on physiological parameters and carotenoid-based coloration in an urbanization context
Giraudeau, Mathieu1; Chavez, Afton1; Toomey, Matthew B.1,2; McGraw, Kevin J.1
通讯作者Giraudeau, Mathieu
来源期刊BEHAVIORAL ECOLOGY AND SOCIOBIOLOGY
ISSN0340-5443
EISSN1432-0762
出版年2015
卷号69期号:6页码:957-970
英文摘要

Worldwide urbanization continues to present new selection pressures on organisms. Carotenoid pigmentation of animals provides an ideal study system for identifying the source and significance of urban impacts because it is an environmentally derived trait and carotenoid molecules have widespread physiological, phenotypic, and fitness functions. Prior work indicates that in some bird species, urban individuals display less colorful carotenoid ornaments than rural birds. However, few studies have experimentally identified the causal factors that drive such a pattern of reduced "sexiness in the city". We performed two common-garden experiments with house finches, in which we manipulated carotenoid access and exposure to oxidative stress to understand how urban and desert birds respond to these drivers of carotenoid utilization. Urban finches were less colorful than desert birds at capture, but we found no differences between urban and desert finches in how carotenoid provisioning or oxidative stress affected plumage coloration. The only notable site differences in our experiments were that (a) the oxidative challenge caused a larger mass loss in urban compared to desert birds (experiment 1), (b) urban birds circulated higher levels of carotenoids than desert birds after receiving the same diet for 4 months (experiment 2), suggesting that, compared to desert birds, urban finches can better assimilate carotenoids from food or do not deplete as many carotenoids for use in free-radical scavenging. Overall, our results fail to reveal key carotenoid-specific physiological differences in urban and desert finches, and instead implicate other ecophysiological factors that drive urban/desert differences in carotenoid ornamentation.


英文关键词Urbanization Carotenoids House finch Oxidative stress Plumage coloration
类型Article
语种英语
国家USA
收录类别SCI-E
WOS记录号WOS:000354227000010
WOS关键词PLUMAGE COLORATION ; HOUSE FINCH ; GREAT TITS ; SEXUAL ATTRACTIVENESS ; DIETARY CAROTENOIDS ; PLASMA CAROTENOIDS ; IMMUNE ACTIVATION ; HEALTH STATE ; PARUS-MAJOR ; MATE CHOICE
WOS类目Behavioral Sciences ; Ecology ; Zoology
WOS研究方向Behavioral Sciences ; Environmental Sciences & Ecology ; Zoology
来源机构Arizona State University
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/186174
作者单位1.Arizona State Univ, Sch Life Sci, Tempe, AZ 85287 USA;
2.Washington Univ, Sch Med, Dept Pathol & Immunol, St Louis, MO 63110 USA
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GB/T 7714
Giraudeau, Mathieu,Chavez, Afton,Toomey, Matthew B.,et al. Effects of carotenoid supplementation and oxidative challenges on physiological parameters and carotenoid-based coloration in an urbanization context[J]. Arizona State University,2015,69(6):957-970.
APA Giraudeau, Mathieu,Chavez, Afton,Toomey, Matthew B.,&McGraw, Kevin J..(2015).Effects of carotenoid supplementation and oxidative challenges on physiological parameters and carotenoid-based coloration in an urbanization context.BEHAVIORAL ECOLOGY AND SOCIOBIOLOGY,69(6),957-970.
MLA Giraudeau, Mathieu,et al."Effects of carotenoid supplementation and oxidative challenges on physiological parameters and carotenoid-based coloration in an urbanization context".BEHAVIORAL ECOLOGY AND SOCIOBIOLOGY 69.6(2015):957-970.
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