The Taxonomy affinities of the Mentawai islands Sureli, Presbytis potenziani (Bonaparte, 1856) (Mammalia: Primata: Cercopithecidae)
A review of the skeletal and external morphology of Presbytis potenziani demonstrate that, although marginal in some respects, the species is referable to the genus Presbytis (sensu stricto). Its cranial, pelage and adult male vocal characteristic indicates that its closest affinities are with Bornean and Sumatran populations of Presbytis comata. The type locality restriction for the nominate subspecies is amended, but the collector and date of collection of the holotype remain obscure. The generically atypical characteristic of P. potemziani are interpreted as the result of its being the sole representative of it’s genus to survive a severe cold and dry stadial of the recent glaciation. The maritime climate of the Mentawai Island enabled the archipelago to sustain the requisite Presbytis (sensu stricto) habitat when this had been eradicated elsewhere. Character such as the ploychromatism and reduced supraorbital torus of the rest of the genus are atributed to relaxaton of the genetic stability during the rapid dispersal process that succeded the glaciation, when the genus expanded geographically to its present distribution.
|Judul||The Taxonomy affinities of the Mentawai islands Sureli, Presbytis potenziani (Bonaparte, 1856) (Mammalia: Primata: Cercopithecidae)|
|Penulis||Douglas Brandon- Jones|