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Cytogenetic analysis shows extensive genomic rearrangements between red howler ( Alouatta seniculus, Linnaeus ) subspecies
Author(s) -
Stanyon R.,
Tofanelli S.,
Morescalchi M. A.,
Agoramoorthy G.,
Ryder O. A.,
Wienberg J.
Publication year - 1995
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/ajp.1350350302
Subject(s) - subspecies , biology , karyotype , phylogenetic tree , zoology , genetics , evolutionary biology , chromosome , autosome , gene
A comparison of the G‐banded karyotypes of two red howler subspecies, Alouatta seniculus arctoidea and A. s. sara , showed that they differed by at least 14 chromosomal rearrangements. Genomic reshuffling is so great that homologs between subspecies could not be found for some chromosome, while the assignment of homology for other chromosomes remains uncertain. The two red howlers, however, share an unusual X 1 X 2 Y 1 Y 2 / X 1 X 1 X 2 X 2 sex‐chromosome system that resulted from a Y‐autosome translocation, probably in a common ancestor. The great chromosomal variability resulting from rapid chromosomal evolution in howlers indicates that cytogenetic data could make an important contribution to resolving phylogenetic and conservation problems in this group of highly conspicuous New World Monkeys. © 1995 Wiley‐Liss, Inc.