Publications by authors named "Keith L Johnson"

2 Publications

  • Page 1 of 1

Parasitism of prehistoric humans and companion animals from Antelope Cave, Mojave County, northwest Arizona.

J Parasitol 2011 Oct 23;97(5):862-7. Epub 2011 Mar 23.

Departamento de Biología, Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata, Mar del Plata 7600, Buenos Aires, Argentina.

Previously, we reported a tick recovered from Antelope Cave in extreme northwest Arizona. Further analyses of coprolites from Antelope Cave revealed additional parasitological data from coprolites of both human and canid origin. A second tick was found. This site is the only archaeological locality where ticks have been recovered. We also discovered an acanthocephalan in association with Enterobius vermicularis eggs in the same coprolite. This association shows that the coprolite was deposited by a human. This discovery expands our knowledge of the range of prehistoric acanthocephalan infection. In addition, findings from canid coprolites of Trichuris vulpis are reported. This is the first published discovery of T. vulpis from a North American archaeological context. The close association of dogs with humans at Ancestral Puebloan (Anasazi) sites raises the potential that zoonotic parasites were transferred to the human population. The archaeological occupation is associated with the Ancestral Pueblo culture 1,100 yr ago.
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http://dx.doi.org/10.1645/GE-2459.1DOI Listing
October 2011

A tick from a prehistoric Arizona coprolite.

J Parasitol 2008 Feb;94(1):296-8

Department of Anthropology, Butte 311, California State University, Chico, California 95929-0400, USA.

Ticks have never been reported in archaeological analyses. Here, we present the discovery of a tick from a coprolite excavated from Antelope Cave in extreme northwest Arizona. Dietary analysis indicates that the coprolite has a human origin. This archaeological occupation is associated with the Ancestral Pueblo culture (Anasazi). This discovery supports previous hypotheses that ticks were a potential source of disease and that ectoparasites were eaten by ancient people.
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http://dx.doi.org/10.1645/GE-1059.1DOI Listing
February 2008