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Volume 7, Number 1—February 2001


Geographic Subdivision of the Range of the Malaria Parasite, Plasmodium vivax

Jun Li*, William E. Collins†, Robert A. Wirtz†, Dharmendar Rathore*, Altaf Lal†, and Thomas F. McCutchan*Comments to Author 
Author affiliations: *National Institutes of Health, Bethesda, Maryland, USA; †Centers for Disease Control and Prevention, Atlanta, Georgia, USA

Main Article


Anopheles albimanus exhibits greater susceptibility to New World versus Old World Plasmodium vivax

Infection rate
P. vivax Mosquito (No. positive/no. fed)
New World An. albimanus 21.2% (5,888/27,700)
An. freeborni 57.1% (13,227/25,555)
Old World An. albimanus 0.4% (10/2,508)
An. freeborni 57% (1,790/3,135)

Main Article

¹The biologic diversity inherent in P. vivax already justifies the use of a trinomial system for naming its members that includes the designation of subspecies, a taxonomic character given formal recognition in the International Rules of Zoological Nomenclature. A subspecies is a population or group of populations inhabiting a geographic subdivision of the range of a species and differing from other populations by diagnostic morphologic characteristics.

²The designation of separate species does not require that the two organisms cannot mate and produce viable progeny, only that this does not happen with frequency in natural situations.