Koiffmann C P, Saldanha P H
Folia Primatol (Basel). 1981;36(1-2):150-5. doi: 10.1159/000156015.
Chromosome studies were performed in a male representative of Cacajao melanocephalus. The diploid number was 45: the chromosome complement consisting of 12 pairs of acrocentric autosomes, 9 pairs of biarmed autosomes and 1 heteromorphic pair composed of one subtelocentric and one acrocentric chromosome. The X chromosome was submetacentric and the Y chromosome was apparently translocated to an acrocentric autosome. G-banding patterns were studied and the results compared to karyotypes previously described for Cacajao rubicundus and Cacajao calvus.
对黑头僧面猴的一只雄性代表进行了染色体研究。二倍体数为45：染色体组由12对近端着丝粒常染色体、9对双臂常染色体和1对异型染色体组成，该异型染色体由一条亚端着丝粒染色体和一条近端着丝粒染色体组成。X染色体为亚中着丝粒染色体，Y染色体显然易位到了一条近端着丝粒常染色体上。研究了G带模式，并将结果与先前描述的红脸僧面猴和白脸僧面猴的核型进行了比较。
