| coccidian parasites (apicomplexa) from snakes in the southcentral and southwestern united states: new host and geographic records. | four hundred thirty-five leptotyphlopid, colubrid, elapid, and viperid snakes were collected from various localities in arkansas, new mexico, oklahoma, and texas, and their feces were examined for coccidian parasites. of these, 131 (30%) were passing oocysts or sporocysts of at least 1 coccidian; 88 (67%) of the infected snakes had only 1 species of coccidian when they were examined. aquatic and semiaquatic snakes accounted for 48% of the infections, whereas strictly terrestrial snakes comprised ... | 1995 | 7876980 |
| susceptibility to yersinia pestis in the northern grasshopper mouse (onychomys leucogaster). | the laboratory-born progeny from two geographically distant populations of northern grasshopper mice (onychomys leucogaster) were challenged with yersinia pestis to determine their relative susceptibilities to plague. one of the o. leucogaster populations was associated with a known epizootic focus of the disease and was found to be nearly 2,000 times more resistant to mortality than were members of another population from an area historically free of plague. the ecology and omnivorous behavior ... | 1988 | 3373638 |
| aeromonas-associated gastroenteritis in children. | during a 20-month period 55 strains of aeromonas species were isolated from 53 children with diarrhea. the isolation rate of 2.5% for aeromonas compared with the rates of 4.5% for shigella, 3.3% for salmonella, 2.7% for campylobacter and 0.05% for yersinia. in 45 children aeromonas was the sole bacterial enteropathogen identified. aeromonas was also isolated from 2 (0.5%) of 380 asymptomatic children. despite its known lack of identifiable virulence properties, aeromonas caviae was the most prev ... | 1988 | 3340460 |
| isolation of borrelia burgdorferi from peromyscus leucopus in oklahoma. | borrelia burgdorferi was isolated from a field-caught peromyscus leucopus from central oklahoma (usa). the strain was identified as b. burgdorferi by reaction with monoclonal antibody h5332 specific for the outer surface protein ospa of b. burgdorferi. this represents the first isolation of b. burgdorferi from a wild mouse outside of the normal range of the known vectors ixodes dammini and i. pacificus. | 1992 | 1602581 |
| hemoglobin polymorphism in the encinal mouse, peromyscus pectoralis. | horizontal starch gel electrophoresis revealed five hemoglobin phenotypes in natural populations of the encinal mouse, peromyscus pectoralis, from northeastern mexico. populations of the encinal mouse from texas, oklahoma, and northwestern and north central mexico were monomorphic for multiple-band phenotypes. analysis of the hemoglobin polymorphism indicates that two loci control this variation. | 1976 | 1259700 |
| presence of hyperplastic pectoral mammary glands in a white-footed mouse (peromyscus leucopus) from a superfund site in oklahoma, usa. | laboratory experiments have documented the effects of hormones and endocrine-disrupting compounds on mammary development in mammals. however, few observations of mammary hyperplasia have been presented for wild rodents. we describe hyperplastic mammary glands in a wild-caught white-footed mouse (peromyscus leucopus) from an area contaminated with heavy metals. | 2011 | 21270018 |
| select human anthrax protective antigen epitope-specific antibodies provide protection from lethal toxin challenge. | bacillus anthracis remains a serious bioterrorism concern, and the currently licensed vaccine remains an incomplete solution for population protection from inhalation anthrax and has been associated with concerns regarding efficacy and safety. thus, understanding how to generate long-lasting protective immunity with reduced immunizations or provide protection through postexposure immunotherapeutics are long-sought goals. through evaluation of a large military cohort, we characterized the levels ... | 2010 | 20533877 |
| alternate pathway of infection with hepatozoon americanum and the epidemiologic importance of predation. | the range of american canine hepatozoonosis (ach) is expanding from the southern usa northward. transmission of hepatozoon americanum occurs by ingestion of infected gulf coast ticks, amblyomma maculatum. the source of the protozoan for the tick remains undetermined; infected dogs are unusual hosts for the tick. | 2009 | 19709355 |
| protein nutrition of southern plains small mammals: immune response to variation in maternal and offspring dietary nitrogen. | maternal nutrition during pregnancy and postnatal offspring nutrition may influence offspring traits. we investigated the effects of maternal and postweaning offspring dietary nitrogen on immune function and hematology in two species of rodent: the hispid cotton rat (sigmodon hispidus), a primarily herbivorous rodent, and the fulvous harvest mouse (reithrodontomys fulvescens), an omnivore. these two species responded differently to the same levels of treatment, with cotton rats primarily influen ... | 2009 | 19199557 |
| field survey of rodents for hepatozoon infections in an endemic focus of american canine hepatozoonosis. | eighteen of 31 (58%) cotton rats (sigmodon hispidus) and 8 of 24 (33.3%) white-footed mice (peromyscus leucopus) that were wild-trapped from 4 american canine hepatozoonosis endemic sites in oklahoma were infected with hepatozoon species. the predilection organ for merogony of the hepatozoon species in cotton rats was the liver. meronts were not detected in any of the white-footed mice. a 488 bp dna fragment that includes a variable region of the 18s rrna hepatozoon gene amplified from blood or ... | 2007 | 17942230 |
| small mammals as indicators of short-term and long-term disturbance in mixed prairie. | disturbance by military maneuvers over short and long time scales may have differential effects on grassland communities. we assessed small mammals as indicators of disturbance by military maneuvers in a mixed prairie in southern oklahoma usa. we examined sites on two soil series, foard and lawton, across a gradient of disturbance intensity. a manova showed that abundance of small mammals was associated (p = 0.03) with short-term (cover of vehicle tracks) disturbance but was not associated (p = ... | 2008 | 17458511 |