干旱区生态环境知识资源中心(Arid): Feeling the heat: Extreme temperatures compromise constitutive innate humoral immunity and skin color in a desert dwelling lizard

Arid

DOI	10.1016/j.jtherbio.2019.05.012
	Feeling the heat: Extreme temperatures compromise constitutive innate humoral immunity and skin color in a desert dwelling lizard
	Plasman, Melissa 1,2; Torres, Roxana 1
通讯作者	Torres, Roxana
来源期刊	JOURNAL OF THERMAL BIOLOGY
ISSN	0306-4565
出版年	2019
卷号	83 页码:142-149
英文摘要	Environmental temperature, particularly in habitats with extreme temperature fluctuations, may shape selection pressures on life history traits. Especially in ectotherms, temperature affects performance, physiology, and in some species, skin color. Skin color can be a sexual ornament signaling the bearer's ability to resist infections, when only high-quality individuals are able to invest both in high immune defense and elaborate ornament expression. However, how the information content of these sexual traits may vary with environmental conditions has been less studied. Dickerson's collared lizard (Crotaphytus dickersonae) males are blue and have a black and white collar. This conspicuous coloration signals performance and immune response, and is related to body temperature. Here, by maintaining males at higher, lower, and mean environmental temperatures we evaluated whether temperature variation influences color and constitutive innate humoral immunity (agglutination and lysis titers, estimated through hemolysis-hemagglutination assays), and whether extreme temperatures impose trade-offs between color and humoral immunity. We found that at low and high temperature treatments males had lower agglutination and lysis titers, and at low temperature, blue chroma from the dorsum declined and males became greener. Interestingly, at low and control temperature treatments, agglutination titer and blue coloration were positively correlated, whereas high temperatures revealed a trade-off between increasing agglutination titers and displaying bluer skin color. Our results suggest that in the Dickerson collared lizard even short-term variation of environmental temperature affects performance of constitutive innate humoral immunity and the brilliant blue skin color. Particularly, high temperatures may compromise some components of male's immunity and sexual signaling.
英文关键词	Color change Dynamic signal Agglutination and lysis titers Sexual color Trade-off
类型	Article
语种	英语
国家	Mexico
收录类别	SCI-E
WOS记录号	WOS:000478704700018
WOS关键词	HONEST SIGNAL ; PLUMAGE COLOR ; LIFE-HISTORY ; COST ; EVOLUTIONARY ; EXPOSURE ; FITNESS ; SIZE
WOS类目	Biology ; Zoology
WOS研究方向	Life Sciences & Biomedicine - Other Topics ; Zoology
来源机构	Universidad Nacional Autónoma de México
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/217392
作者单位	1.Univ Nacl Autonoma Mexico, Inst Ecol, Dept Ecol Evolut, Lab Conducta Anim, Circuito Exterior S-N Anexo Jardin Bot Exterior, Mexico City 04510, DF, Mexico; 2.Univ Autonoma Tlaxcala, Ctr Tlaxcala Biol Conducta, Carretera Tlaxcala Puebla Km 1-5, Tlaxcala 90062, Mexico
推荐引用方式 GB/T 7714	Plasman, Melissa,Torres, Roxana. Feeling the heat: Extreme temperatures compromise constitutive innate humoral immunity and skin color in a desert dwelling lizard[J]. Universidad Nacional Autónoma de México,2019,83:142-149.
APA	Plasman, Melissa,&Torres, Roxana.(2019).Feeling the heat: Extreme temperatures compromise constitutive innate humoral immunity and skin color in a desert dwelling lizard.JOURNAL OF THERMAL BIOLOGY,83,142-149.
MLA	Plasman, Melissa,et al."Feeling the heat: Extreme temperatures compromise constitutive innate humoral immunity and skin color in a desert dwelling lizard".JOURNAL OF THERMAL BIOLOGY 83(2019):142-149.