Mammal species likely to be found in dry prairie in the Grand Calumet River basin are the prairie deermouse, Peromyscus maniculatus bairdii; white-footed mouse, Peromyscus leucopus; prairie vole, Microtus ochrogaster; thirteen-lined ground squirrel, Spermophilus
tridecemlineatus; woodchuck, Marmota monax; least shrew, Cryptotisparva; Franklin's ground squirrel, Spermnophilus franklinii; southern bog lemming, Synaptomys cooperi; coyote, Can is latrans; red fox, Vulpes vulpes; least weasel, Mustela nivalis; and American badger, Taxidea taxus.
Specimens of Spermophilus tridecemlineatus were obtained from natural populations in Wichita Falls, Texas during the month of September 1997 and transported to the Animal Care Facility of Midwestern State University.
Monthly microbial colony counts of fecal samples expressed in number of colonies per gram from five specimens of Spermophilus tridecemlineatus, as determined by cultures on CHROMagar media.
Hybridization in the Mexican and thirteen-lined ground squirrels, Spermophilus
mexicanus and Spermophilus
Adult females of Spermophilus mexicanus from Haskell Cemetery, Haskell County, Texas, were housed in large glass aquariums lined with cedar shavings and maintained on a diet of alfalfa pellets and water.
One can only speculate how accurately these observations of one or both litters summarize early growth and development in Spermophilus mexicanus, or how variable these results would have been, had it been possible to assess these same litters as they developed under natural conditions.
Comparisons of descriptive statistics for weights (g) and body measurements (mm) of two captive-born litters (N = 6 for each) of Spermophilus mexicanus originating from Haskell County, Texas.
2002 Taxon Colony Non-colony Baiomys taylori 0 1 Chaetodipus hispidus 5 32 Cryptotis parva 0 1 Microtus ochrogaster 2 0 Mus musculus 0 1 Onychomys leucogaster 29 19 Perognathus 7 17 Peromyscus 76 107 Reithrodontomys 4 35 Sigmodon hispidus 0 6 Spermophilus
tridecemlineatus 7 3 Total 130 222 2003 Taxon Colony Non-colony Total Baiomys taylori 0 0 1 Chaetodipus hispidus 8 57 102 Cryptotis parva 0 0 1 Microtus ochrogaster 0 3 5 Mus musculus 0 0 1 Onychomys leucogaster 54 4 106 Perognathus 4 7 35 Peromyscus 77 124 384 Reithrodontomys 2 32 73 Sigmodon hispidus 0 41 47 Spermophilus
tridecemlineatus 37 19 66 Total 182 287 821
Univariate and multivariate statistical tests were used to assess individual and secondary sexual morphological variation in a sample of 99 Spermophilus tridecemlineatus from northwestern Texas.
The 13-lined ground squirrel, Spermophilus tridecemlineatus, inhabits a broad geographic area in the central United States.
annulatus annulatus-Specimens, 3 (1[male], 2[female]).
Benton and Altmann, 1964; Jackson and DeFoliart, 1976) and has been collected from a large number of hosts, many of which are undoubtedly accidental: Didelphis, Sorex, Blarina, Glaucomys, Spermophilus
, Tamias, Tamiasciurus, Sciurus, Sigmodon, Ondatra, Dipodomys, Perognathus, Neotoma, Onychomys, Reithrodontomys, Microtus, Clethrionomys, Synaptomys, Napaeozapus, Mus, Erethizon, and various carnivores (Morlan, 1955; Benton, 1980; Haddow et al.