Use este identificador para citar ou linkar para este item: https://repositorio.inpa.gov.br/handle/1/18647
Título: Extreme long-distance dispersal of the lowland tropical rainforest tree Ceiba pentandra L. (Malvaceae) in Africa and the Neotropics
Autor: Dick, Christopher W.
Bermingham, Eldredge P.
Lemes, Maristerra R.
Gribel, Rogério
Palavras-chave: Africa
Angiosperm
Genetic Variability
Genetics
Geography
Kapok
Phylogeny
Tree
Tropic Climate
Africa
Ceiba
Geography
Malvaceae
Phylogeny
Trees
Tropical Climate
Variation (genetics)
Ceiba Pentandra
Magnoliophyta
Malvaceae
Data do documento: 2007
Revista: Molecular Ecology
É parte de: Volume 16, Número 14, Pags. 3039-3049
Abstract: Many tropical tree species occupy continental expanses of rainforest and flank dispersal barriers such as oceans and mountains. The role of long-distance dispersal in establishing the range of such species is poorly understood. In this study, we test vicariance hypotheses for range disjunctions in the rainforest tree Ceiba pentandra, which is naturally widespread across equatorial Africa and the Neotropics. Approximate molecular clocks were applied to nuclear ribosomal [ITS (internal transcribed spacer)] and chloroplast (psbB-psbF) spacer DNA sampled from 12 Neotropical and five West African populations. The ITS (N = 5) and psbB-psbF (N = 2) haplotypes exhibited few nucleotide differences, and ITS and psbB-psbF haplotypes were shared by populations on both continents. The low levels of nucleotide divergence falsify vicariance explanations for transatlantic and cross-Andean range disjunctions. The study shows how extreme long-distance dispersal, via wind or marine currents, creates taxonomic similarities in the plant communities of Africa and the Neotropics. © 2007 The Authors.
DOI: 10.1111/j.1365-294X.2007.03341.x
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