Proteomic analysis of F_(1)hybrids and intermediate variants in a Littorina saxatilis hybrid zone

查看全文 作　　者：Angel [1]P.DIZ;Mónica [1]R.ROMERO;Juan [1]GALINDO;María [2]SAURA;David [3]O.F.SKIBINSKI;Emilio ROLÁN-[1]ALVAREZ 机构地区：[1]Centro de Investigación Mariña(CIM-UVIGO),Universidade de Vigo,Vigo 36310,Spain;[2]Departamento de Mejora Genética Animal,INIA,Madrid 28040,Spain;[3]Institute of Life Science,Swansea University Medical School,Swansea SA28PP,UK 出　　处：《Current Zoology》索引2022年第68卷第3期,共9页 基　　金：This work was supported by Xunta de Galicia(ED431C 2020/05);FONDOS FEDER(“unha maneira de facer Europa”);Ministerio de Economía y Competitividad(CGL2016-75482-P);Marine Research Center(CIM-UVIGO)is funded by the Galician Regional Government through the“Excellence in Research(INUGA)”Program and ERDF Operational European Union Program Galicia 2014-2020;J Galindo was funded by a JIN project(Ministerio de Ciencia,Innovación y Universidades,code RTI2018-101274-J-I00);Funding for open access charge:Universidade de Vigo/CISUG. 摘　　要：Proteomic analysis was carried out on the Crab(upper-shore)and Wave(lower-shore)ecotypes of Littorina saxatilis from a hybrid zone at Silleiro Cape,Spain.Proteome profiles of individual snails were obtained.Protein expression in F_(1)hybrid snails bred in the laboratory and snails with intermediate shell phenotypes collected from the mid-shore were compared with Crab and Wave ecotypes using analytical approaches used to study dominance.Multivariate analysis over many protein spots showed that the F_(1)snails are distinct from both ecotypes but closer to the Wave ecotype.The intermediate snails are highly variable,some closer to the Crab and others to the Wave ecotype.Considered on a protein by protein basis,some proteins are significantly closer in expression to the Crab and others to the Wave ecotype for both F_(1)and intermediate snails.Furthermore,a significant majority of proteins were closer in expression to the Wave ecotype for the F_(1),consistent with the multivariate analysis.No such significant majority toward either the Crab or Wave ecotype was observed for the intermediate snails.The closer similarity of F_(1)and Wave ecotype expression patterns could be the result of similar selective pressures in the similar mid-shore and low-shore environments.For a significantly larger number of proteins,intermediate snails were closer in expression to the ecotype having the lower expression,for both Crab and Wave ecotypes.This is somewhat unexpected as lower expression might be expected to be an indication of impairment of function and lower fitness.Proteomic analysis could be important for the identification of candidate proteins useful for gaining improved understanding of adaptation and barriers to gene flow in hybrid zones. 关 键 词：F_(1)hybrids gene expression marine invertebrates molecular phenotype reproductive isolation SPECIATION