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A new west African chimpanzee subspecies?

Abstract

We have sequenced a portion of the mitochondrial DNA control region from the hairs of Nigerian chimpanzees living on both sides of the Niger River, which is proposed as a biogeographic boundary. Our data suggest that a previously unrecognized type of chimpanzee may be present in Nigeria and adjacent parts of Cameroon, and that the zoogeographic barriers separating chimpanzees are different from those previously proposed.

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Figure 1: Localities from which chimpanzee mtDNA was sampled by Morin et al.k .2
Figure 2: Phylogeny derived using a maximum parsimony analysis of chimpanzee mtDNA D-loop sequences.

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Gonder, M., Oates, J., Disotell, T. et al. A new west African chimpanzee subspecies?. Nature 388, 337 (1997). https://doi.org/10.1038/41005

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