Chapter

Neogene Assembly of Modern Faunas

James S. Albert and Tiago P. Carvalho

in Historical Biogeography of Neotropical Freshwater Fishes

Published by University of California Press

Published in print August 2011 | ISBN: 9780520268685
Published online March 2012 | e-ISBN: 9780520948501 | DOI: http://dx.doi.org/10.1525/california/9780520268685.003.0007
Neogene Assembly of Modern Faunas

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This chapter examines the assembly of modern faunas in South America during the Neogene period. It presents a Brooks Parsimony Analysis (BPA) of published species-level phylogenies for freshwater fishes of tropical South America. The result indicates that the taxonomic composition of the modern river basins predates the rise of the Michicola, Fitzcarrald, and Vaupes Arches that fragmented the Sub-Andean Foreland. The findings also suggest that the semipermeable watershed barriers facilitated a mosaic assembly of regional species pools, intermittently separating and mixing the faunas of adjacent basins.

Keywords: modern faunas; South America; Neogene period; BPA; species-level phylogenies; freshwater species; river basins

Chapter.  10882 words.  Illustrated.

Subjects: Aquatic Biology

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