title: Contribution to the molecular systematics of the genusCapoetafrom the south Caspian Sea basin using mitochondrial cytochrome b sequences (Teleostei: Cyprinidae).
abstract: Traditionally,Capoetapopulations from the southern Caspian Sea basin have been considered asCapoeta capoeta gracilis. Study on the phylogenetic relationship ofCapoetaspecies using mitochondrial cytochromebgene sequences show thatCapoetapopulation from the southern Caspian Sea basin is distinct species and receive well support (posterior probability of 100%). Based on the tree topologies obtained from Bayesian and Maximum Likelihood methods, three main groups for the studiedCapoetawere detected: Clade I)Capoeta truttagroup (the MesopotamianCapoetagroup) including closely related taxa (e.g.trutta,turani,barroisi) characterized by having numerous irregular black spots on the dorsal half of the body. This clade was the sister group to all otherCapoetaspecies and its separation occurred very early in evolution possess, so we considered it as O ld Evolutionary Group. Clade II) comprises highly diversified and widespread group,Capoeta damascinacomplex group (small scale capoeta group), the Anatolian-Iranian group (e.g.banarescui,buhsei,damascina,saadii), characterized by small scales and plain body (absence of irregular black spots on the dorsal half of the body, except in some juveniles) with signiﬁcantly later speciation event so called Young Evolutionary Group. Clade III)Capoeta capoetacomplex group (large scale capoeta group, the Aralo-Caspian group) comprises very closely related taxa characterized by large scales and plain body (absence of irregular black spots on the dorsal half of the body) distributed in Aralo-Caspian water bodies (capoeta,ekmekciae,heratensis,gracilis,sevangi) that has been recently diverged and could be considered as Very Young Evolutionary Group.
authors.affiliation: Department of Biology, College of Sciences, Shiraz University, Shiraz, Iran.
authors.forename: Halimeh
authors.initials: H
authors.lastname: Zareian
authors.affiliation: Department of Biology, College of Sciences, Shiraz University, Shiraz, Iran.
authors.forename: Hamid Reza
authors.initials: HR
authors.lastname: Esmaeili
authors.affiliation: Department of Fisheries, Faculty of Natural Resources, University of Guilan, Sowmeh Sara, Guilan, Iran.
authors.forename: Adeleh
authors.initials: A
authors.lastname: Heidari
authors.affiliation: Department of Fisheries, Faculty of Natural Resources, University of Guilan, Sowmeh Sara, Guilan, Iran.
authors.forename: Majid Reza
authors.initials: MR
authors.lastname: Khoshkholgh
authors.affiliation: Department of Fisheries, Faculty of Natural Resources, University of Guilan, Sowmeh Sara, Guilan, Iran.
authors.forename: Hamed
authors.initials: H
authors.lastname: Mousavi-Sabet
keywords: Capoeta Gracilis; Caspian Sea basin; Evolutionary History; Phylogenetic Relationship