Molecular Phylogeny and Biogeography of the Amphidromous Fish Genus Dormitator Gill 1861 (Teleostei: Eleotridae)
Por:
Galvan-Quesada, Sesangari, Doadrio, Ignacio, Alda, Fernando, Perdices, Anabel, Gisela Reina, Ruth, Garcia Varela, Martin, Hernandez, Natividad, Campos Mendoza, Antonio, Bermingham, Eldredge, Dominguez-Dominguez, Omar
Publicada:
13 abr 2016
Resumen:
Species of the genus Dormitator, also known as sleepers, are
representatives of the amphidromous freshwater fish fauna that inhabit
the tropical and subtropical coastal environments of the Americas and
Western Africa. Because of the distribution of this genus, it could be
hypothesized that the evolutionary patterns in this genus, including a
pair of geminate species across the Central American Isthmus, could be
explained by vicariance following the break-up of Gondwana. However, the
evolutionary history of this group has not been evaluated. We
constructed a time-scaled molecular phylogeny of Dormitator using
mitochondrial (Cytochrome b) and nuclear (Rhodopsin and beta-actin) DNA
sequence data to infer and date the cladogenetic events that drove the
diversification of the genus and to relate them to the biogeographical
history of Central America. Two divergent lineages of Dormitator were
recovered: one that included all of the Pacific samples and another that
included all of the eastern and western Atlantic samples. In contrast to
the Pacific lineage, which showed no phylogeographic structure, the
Atlantic lineage was geographically structured into four clades:
Cameroon, Gulf of Mexico, West Cuba and Caribbean, showing evidence of
potential cryptic species. The separation of the Pacific and Atlantic
lineages was estimated to have occurred similar to 1 million years ago
(Mya), whereas the four Atlantic clades showed mean times of divergence
between 0.2 and 0.4 Mya. The splitting times of Dormitator between ocean
basins are similar to those estimated for other geminate species pairs
with shoreline estuarine preferences, which may indicate that the common
evolutionary histories of the different clades are the result of
isolation events associated with the closure of the Central American
Isthmus and the subsequent climatic and oceanographic changes.
Filiaciones:
Galvan-Quesada, Sesangari:
Univ Michoacana, Programa Inst Doctorado Ciencias Biol, Morelia, Michoacan, Mexico
Univ Michoacana, Fac Biol, Lab Biol Acuat, Morelia, Michoacan, Mexico
Doadrio, Ignacio:
CSIC, Museo Nacl Ciencias Nat, Dept Biodiversidad & Biol Evolut, E-28006 Madrid, Spain
Alda, Fernando:
Smithsonian Trop Res Inst, Apartado 2072, Balboa, Panama
Louisiana State Univ, Dept Biol Sci, Museum Nat Sci, Baton Rouge, LA 70803 USA
Perdices, Anabel:
CSIC, Museo Nacl Ciencias Nat, Dept Biodiversidad & Biol Evolut, E-28006 Madrid, Spain
Smithsonian Trop Res Inst, Apartado 2072, Balboa, Panama
Gisela Reina, Ruth:
Smithsonian Trop Res Inst, Apartado 2072, Balboa, Panama
Garcia Varela, Martin:
Univ Nacl Autonoma Mexico, Inst Biol, Mexico City 04510, DF, Mexico
Hernandez, Natividad:
Inst Med Trop Pedro Kouri, Apartado 601, Havana, Cuba
Campos Mendoza, Antonio:
Univ Michoacana, Fac Biol, Lab Biol Acuat, Morelia, Michoacan, Mexico
Bermingham, Eldredge:
Smithsonian Trop Res Inst, Apartado 2072, Balboa, Panama
Patricia & Phillip Frost Museum Sci, Miami, FL USA
Dominguez-Dominguez, Omar:
Univ Michoacana, Fac Biol, Lab Biol Acuat, Morelia, Michoacan, Mexico
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