Hormonal control of seasonal color change in female spiny-footed lizards:an observational and experimental approach  

作　　者：Belen FRESNILLO Josabel BELLIURE Diego GIL Jose J.CUERVO 

机构地区：[1]Department of Life Sciences,Ecology Section,University of Alcala,Madrid,Spain [2]Department of Functional and Evolutionary Ecology,Estacion Experimental de Zonas Aridas(CSIC),Carretera de Sacramento s/n,Almerfa,Spain [3]Department of Evolutionary Ecology,Museo Nacional de Ciencias Naturales(CSIC),Madrid,Spain

出　　处：《Current Zoology》2019年第6期633-642,共10页动物学报（英文版）

摘　　要：Breeding coloration of females often signals aspects of their reproductive status,suggesting a link between color and sex steroid hormones.In this study,we examined the relationships between 2 sex steroid hormones(progesterone and p-estradiol)and reproductive coloration in female spinyfooted lizards Acanthodactylus erythrurus.We first explored natural variation in female plasma hormone levels and coloration during their reproductive cycle,p-estradiol was negatively related to brightness and positively related to red saturation,whereas progesterone was not significantly related to coloration.After identifying key relationships,plasma hormone concentrations were manipulated by creating 3 experimental female groups(p-estradiol-treated,progesterone-treated,and control),and the effects on coloration were monitored,p-estradiol-treated females,in which there was a rise in both p-estradiol and progesterone levels,lost their red coloration earlier than females in the other 2 experimental groups,whereas progesterone treatment had no significant effect on female coloration.Our results suggest that high levels of either p-estradiol alone or(3-estradiol together with progesterone trigger the loss of red coloration in female spiny-footed lizards,and that progesterone alone does not affect coloration.We hypothesize that changes in female breeding color might be regulated by(3-estradiol in species in which conspicuous coloration is displayed before ovulation,and by progesterone in species in which this color is displayed during gravidity.

关 键 词：color signaling enzyme immunoassay hormone-induced color change sex-specific coloration spectrophotometry transdermal hormone application 

分 类 号：TP3[自动化与计算机技术—计算机科学与技术]