title: Sea-level variations have influenced the demographic history of estuarine and freshwater fishes of the coastal plain of Paraná, Brazil.
abstract: This study surveyed the mitochondrial haplotype diversity of nine freshwater fish species and two estuarine-marine species from the coastal basins and drainages of the highland plateaus of Paraná, Brazil. Portions of the cytochrome b gene or the control region were sequenced. The demographic history of each species was inferred using the Bayesian skyline method, mismatch distribution analysis and statistical neutrality tests. Demographic reconstruction analyses revealed a single pattern of variation in the effective population size (Ne) among species. No dramatic changes in Newere detected in upland species. By contrast, evidence of population expansion over the past 200 000 years was detected in all coastal plain and estuarine species. These findings correspond to periods of low sea-level (regressions) followed by a rapid increase in the sea-level by >100 m. The resulting reconnections and subsequent fragmentation and isolation between the estuarine and freshwater bodies were putatively relevant to the historical demography of the fish species in these areas.
authors.affiliation: Laboratório de Ecologia Molecular e Parasitologia Evolutiva, Departamento de Zoologia, Universidade Federal do Paraná, C. P. 19073, 81531-980, Curitiba, PR, Brazil.
authors.forename: M K
authors.initials: MK
authors.lastname: Tschá
authors.affiliation: Laboratório de Ecologia Molecular e Parasitologia Evolutiva, Departamento de Zoologia, Universidade Federal do Paraná, C. P. 19073, 81531-980, Curitiba, PR, Brazil.
authors.forename: R A
authors.initials: RA
authors.lastname: Baggio
authors.affiliation: Laboratório de Ecologia Molecular e Parasitologia Evolutiva, Departamento de Zoologia, Universidade Federal do Paraná, C. P. 19073, 81531-980, Curitiba, PR, Brazil.
authors.forename: F M
authors.initials: FM
authors.lastname: Marteleto
authors.affiliation: Grupo de Pesquisas em Ictiofauna, Museu de História Natural Capão da Imbuia, Prefeitura Municipal de Curitiba, 82810-080, Curitiba, PR, Brazil.
authors.forename: V
authors.initials: V
authors.lastname: Abilhoa
authors.affiliation: Department for Research and Collections, Natural History Museum, University of Oslo, P. O. Box 1172, NO 0318, Oslo, Norway.
authors.forename: L
authors.initials: L
authors.lastname: Bachmann
authors.affiliation: Laboratório de Ecologia Molecular e Parasitologia Evolutiva, Departamento de Zoologia, Universidade Federal do Paraná, C. P. 19073, 81531-980, Curitiba, PR, Brazil.
authors.forename: W A
authors.initials: WA
authors.lastname: Boeger
mesh_terms: D000818:Animals; D001267:Atlantic Ocean; D001483:Base Sequence; D001499:Bayes Theorem; D001938:Brazil; D045303:Cytochromes b / Q000235:genetics; D004272:DNA, Mitochondrial / Q000235:genetics; D063366:Estuaries; D005399:Fishes / Q000235:genetics*; D005618:Fresh Water; D014644:Genetic Variation; D006239:Haplotypes; D058974:Phylogeography; D011157:Population Dynamics
chemical_list: D004272:DNA, Mitochondrial; D045303:Cytochromes b
keywords: Ne; effective population size; eustasy; late Pleistocene; skyline plot