细胞遗传学分析显示，红吼猴（Alouatta seniculus，林奈）亚种之间存在广泛的基因组重排。

Cytogenetic analysis shows extensive genomic rearrangements between red howler (Alouatta seniculus, Linnaeus) subspecies.

作者信息

Stanyon R, Tofanelli S, Morescalchi M A, Agoramoorthy G, Ryder O A, Wienberg J

机构信息

Institute of Physical Anthropology, University of Genoa, Genoa, Italy.

Institute of Anthropology, University of Florence, Italy.

出版信息

Am J Primatol. 1995;35(3):171-183. doi: 10.1002/ajp.1350350302.

DOI:10.1002/ajp.1350350302

PMID:31924072

Abstract

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 XXYY/ XXXX 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.

摘要

对两种红吼猴亚种——阿氏吼猴指名亚种（Alouatta seniculus arctoidea）和阿氏吼猴萨拉亚种（A. s. sara）的G带核型进行比较后发现，它们至少有14种染色体重排差异。基因组重排非常大，以至于某些染色体在亚种之间找不到同源染色体，而其他染色体的同源性归属仍不确定。然而，这两种红吼猴共享一个不寻常的XXYY/XXXX性染色体系统，该系统可能源于一个共同祖先中的Y染色体与常染色体易位。吼猴中快速的染色体进化导致了巨大的染色体变异性，这表明细胞遗传学数据可能对解决这一群体高度引人注目的新大陆猴的系统发育和保护问题做出重要贡献。© 1995威利 - 利斯公司。