Biology ETDs

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A twelve-month survey of the incidence of Salmonella among small mammals was conducted in central New Mexico, utilizing a direct fecal plating on both selective and enrichment media. Collections were made at the following locations: Albuquerque, Bernardo, Cuba, Isleta Indian Pueblo, Juan Tabo Park, and Moriarty. Locations selected characterize three major types of terrain: mountain, mesa, and river valley. The predominant genera caught in the mountains, in order of their frequency, were Peromyscus, Dipodomys, and Neotoma. The predominant genera caught on the mesas, in order of their frequency, were Peromyscus, Spermophilus, and Dipodomys. The predominant genera caught long the Rio Grande River, in order of their frequency, were Peromyscus, Dipodomys, Spermophilus, and Rattus. All mammals caught belong to two major orders, Rodentia and Lagomorpha. A direct plating of fecal material on selective and enrichment media for Salmonella was made. Possible Salmonella colonies were picked and subsequent biochemical and serological identification was made. Salmonella was isolated only once. This was confirmed by the Center for Disease Control, Atlanta, Georgia, to be Salmonella enteritidis ser. infantis. This organism was isolated from a Norway rat (Rattus norvegicus), trapped on September 27, 1971, long the Rio Grande River near the Isleta Indian Pueblo.



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Degree Name


Level of Degree


Department Name

UNM Biology Department

First Committee Member (Chair)

John Wm. Beakley

Second Committee Member

Earl Whitfield Bourne

Third Committee Member

James Samuel Booth

Fourth Committee Member

Donald Walter Duszynski

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