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Phylogenetic relationships of the callitrichinae (Platyrrhini, Primates) based on β 2 ‐microglobulin DNA sequences
Author(s) -
Canavez Flávio C.,
Moreira Miguel A. M.,
Simon Faiçal,
Parham Peter,
Seuánez Héctor N.
Publication year - 1999
Publication title -
american journal of primatology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.988
H-Index - 81
eISSN - 1098-2345
pISSN - 0275-2565
DOI - 10.1002/(sici)1098-2345(1999)48:3<225::aid-ajp4>3.0.co;2-4
Subject(s) - biology , phylogenetic tree , sister group , callithrix , lineage (genetic) , zoology , phylogenetics , callitrichidae , clade , evolutionary biology , genetics , primate , gene , ecology
Abstract The phylogenetic relationships of callitrichine primates have been determined by DNA sequence analyses of exons 1, 2, and 3 of the β 2 ‐microglobulin gene. Parsimony, distance, and maximum likelihood analyses of ca. 900 base pairs of 21 taxa, representing all callitrichine genera, indicated that Saguinus was the most basal offshoot. Within Saguinus , S. fuscicollis appeared as the first divergent lineage followed by an unresolved trichotomy formed by S. mystax / S. imperator , S. midas / S. bicolor , and S. oedipus . A second callitrichine lineage was formed by Leontopithecus ; each of the three species studied showed identical nucleotide sequences. Callimico appeared as the sister taxon of Callithrix / Cebuella . Genetic distances within this latter group were very small, although a stronger association between Cebuella and species of the Callithrix argentata group was observed. The inclusion of Cebuella in the genus Callithrix is suggested. These studies indicated that tamarins are more plesiomorphic than marmosets in agreement with the phyletic dwarfism hypothesis. Am. J. Primatol. 48:225–236, 1999. © 1999 Wiley‐Liss, Inc.