Color polymorphisms have become a major topic in evolutionary biology and substantial efforts have been devoted to the understanding of the mechanisms responsible for originating such colorful systems.Within-morph con...Color polymorphisms have become a major topic in evolutionary biology and substantial efforts have been devoted to the understanding of the mechanisms responsible for originating such colorful systems.Within-morph continuous variation,on the other hand,has been neglected in most of the studies.Here,we combine spectrophotometric/visual modeling and genetic data to study the mechanisms promoting continuous variation within categorical color morphs of Podarcis muralis.Our results suggest that intra-morph variability in the pterin-based orange morph is greater compared to white and yellow morphs.We also show that continuous variation within the orange morph is partially discriminable by conspecifics.Genotyping results indicate that allelic variants at the BCO2 locus(responsible for deposition of yellow carotenoids)contribute to generate continuous variation in orange individuals.However,other intrinsic and/or extrinsic mechanisms,such as body size,might be involved,opening a new avenue for future research on the drivers of continuous variation within-morphs.展开更多
基金supported by post-doctoral grants Juan de la Cierva-Incorporación,IJC2018-035319-I(from the Spanish Ministerio de Ciencia,Inovación y Universidades)SFRH/BPD/94582/2013 by Fundação para a Ciência e a Tecnologia under the Programa Operacional Potencial Humano-Quadro de Referência Estratégico Nacional,funds from the European Social Fund and Portuguese Ministério da Educação e Ciência+3 种基金P.Andrade was supported by the Fundação para a Ciência e Tecnologia(FCT)through a research contract in the scope of project PTDC/BIA-EVL/28621/2017P.Aguilar was supported by the Fundação para a Ciência e Tecnologia(FCT)through a technician contract in the scope of project PTDC/BIA-EVL/30288/2017-NORTE-01-0145-FEDER-30288funded by Fundação para a Ciência e Tecnologia through the FCT project PTDC/BIA-EVL/30288/2017-NORTE-01-0145-FEDER-30288by the Spanish Ministerio de Ciencia e Innovación through the project PID2019-104721GB-I00.
文摘Color polymorphisms have become a major topic in evolutionary biology and substantial efforts have been devoted to the understanding of the mechanisms responsible for originating such colorful systems.Within-morph continuous variation,on the other hand,has been neglected in most of the studies.Here,we combine spectrophotometric/visual modeling and genetic data to study the mechanisms promoting continuous variation within categorical color morphs of Podarcis muralis.Our results suggest that intra-morph variability in the pterin-based orange morph is greater compared to white and yellow morphs.We also show that continuous variation within the orange morph is partially discriminable by conspecifics.Genotyping results indicate that allelic variants at the BCO2 locus(responsible for deposition of yellow carotenoids)contribute to generate continuous variation in orange individuals.However,other intrinsic and/or extrinsic mechanisms,such as body size,might be involved,opening a new avenue for future research on the drivers of continuous variation within-morphs.
