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CHROMOSOME COMPLEMENTS OF TWO SPECIES OF PRIMATES: CYNOPITHECUS NIGER AND PRESBYTIS ENTELLUS.
Science (New York, N.Y.)
|October 2, 1964
Summary
Chromosomal analysis of Celebes apes (Cynopithecus niger) revealed 42 chromosomes, while Indian langurs (Presbytis entellus) had 44. These findings cytogenetically support their established taxonomic classification.
Area of Science:
- Primatology
- Cytogenetics
- Zoology
Background:
- Accurate taxonomic classification relies on comparative biological data.
- Cytogenetic analysis provides a molecular basis for understanding species relationships.
Purpose of the Study:
- To determine the chromosome counts for Celebes apes (Cynopithecus niger) and Indian langurs (Presbytis entellus).
- To provide cytogenetic evidence supporting the existing taxonomic classification of these primate species.
Main Methods:
- Culturing of somatic cells from four Celebes apes and three Indian langurs.
- Microscopic examination of mitotic cells to count chromosomes.
Main Results:
- Celebes apes (Cynopithecus niger) exhibited 42 chromosomes.
- Indian langurs (Presbytis entellus) showed 44 chromosomes.
Conclusions:
- The determined chromosome numbers align with the established taxonomic placement of Cynopithecus niger and Presbytis entellus.
- Cytogenetic data reinforces the validity of Simpson's taxonomic classification for these primates.
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