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33. Whence the Red Panda?

Author

Flynn, John J., primary, Nedbal, Michael A., additional, Dragoo, Jerry W., additional, and Honeycutt, Rodney L., additional

Published
2000
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35. Natural nidality in Bolivian hemorrhagic fever and the systematics of the reservoir species

Author

Salazar-Bravo, Jorge, Dragoo, Jerry W., Bowen, Michael D., Peters, Clarence J., Ksiazek, Thomas G., and Yates, Terry L.

Subjects
*HEMORRHAGIC fever, *ZOONOSES
Abstract

Zoonoses within wild reservoir host populations often occur focally obeying Pavlovskii’s rules of “natural nidality”. What appears to be a clear example is Bolivian hemorrhagic fever (BHF), a disease endemic to northeastern Bolivia. The etiological agent is Machupo virus (MACV, Arenaviridae). The vertebrate reservoir, identified 30 years ago, was Calomys callosus a wild rodent common to open biomes in the lowlands of southeastern South America. The lack of concordance between the occurrence of MACV and the range of its rodent host has puzzled cadres of researchers and could be used as an exemplar of natural nidality. Here, we show that the populations of rodents responsible for the maintenance and transmission of MACV are an independent monophyletic lineage, different from those in other areas of South America. Therefore a clearer understanding of the systematics of the host species explains the apparent natural nidality of BHF. Similar studies may prove to be informative in other zoonoses. [Copyright &y& Elsevier]

Published
2002

36. Systematic and Evolutionary Relationships Among North American Arid-Land Foxes

Author

Dragoo, Jerry W. and Dragoo, Jerry W.

Abstract

Intrapopulational variation was assessed for 14 cranial measurements in 205 specimens of the San Joaquin kit fox (Vulpes macrotis mutica). Variance components analysis revealed little secondary sexual variation relative to variation with age or individual variation. Both Tukey’s studentized range test and principal components analysis showed that subadult and adult males and females can be pooled for taxonomic study of geographic variation of these foxes. Old adults are significantly larger than subadults and adults and should be analyzed separately. The puppy age class is extremely variable and is not a useful for taxonomic analysis.

Published
1988

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