Seuénez Héctor N, Armada Jorge L, Freitas Lucy, Silva Roberto Rocha E, Pissinatti Alcides, Coimbra-Filho Adelmar
Department of Genetics, Universidade Federal do Rio de Janeiro/Genetics Section, Instituto Nacional do Cancer, Brazil.
Department of Genetics, Universidade Federal Rural do Rio de Janeiro, Brazil.
Am J Primatol. 1986;10(3):237-247. doi: 10.1002/ajp.1350100304.
Chromosome studies in six wild-caught specimens of Cebus apella xanthosternos showed a distinctive chromosome pair number 11 that made it possible to distinguish this subspecies from other Cebus apella. The characteristic chromosome pair had intercalar heterochromatin unlike the "standard" chromosome type of Cebus apella and other species of the same genus, in which this chromosome pair shows a large, terminal, heterochromatic block. A comparison at the chromosomal level between different Cebus apella populations suggests that chromosome 11 in Cebus apella xanthosternos is a derived chromosome that has probably become fixed in this subspecies, either by selection or by drift in a small isolated population.
对六只野生捕获的黄腹绒毛猴（Cebus apella xanthosternos）标本进行的染色体研究显示，其11号染色体对具有独特性，这使得该亚种能够与其他绒毛猴区分开来。与绒毛猴属的其他物种以及绒毛猴（Cebus apella）的“标准”染色体类型不同，该特征性染色体对具有居间异染色质，而在其他物种中，该染色体对显示出一个大的、末端的异染色质块。不同绒毛猴种群之间的染色体水平比较表明，黄腹绒毛猴的11号染色体是一条衍生染色体，可能通过选择或在一个小的隔离种群中的漂变而在该亚种中固定下来。
