| immune response of lizards and rodents to larval ixodes scapularis (acari: ixodidae). | the house mouse (laboratory strain), mus musculus (l.), the cotton mouse, peromyscus gossypinus (leconte), the broad-headed skink, eumeces laticeps (schneider), and the guinea pig, cavia porcellus (l.), were successively infested five times with larvae of the blacklegged tick, ixodes scapularis say. tick feeding success, engorgement weight, and subsequent molting success were measured after each infestation. a greater percentage of ticks (p less than 0.05) fed on m. musculus and e. laticeps than ... | 1992 | 1404256 |
| antibodies to borrelia burgdorferi in rodents in the eastern and southern united states. | serologic studies were conducted to determine whether white-footed mice (peromyscus leucopus) and cotton mice (peromyscus gossypinus) contained serum antibodies to borrelia burgdorferi, the causative agent of lyme borreliosis. enzyme-linked immunosorbent assays detected antibodies to this spirochete in 35.7 and 27.3% of 56 p. leucopus and 535 p. gossypinus serum samples, respectively, collected in connecticut, north carolina, south carolina, georgia, florida, alabama, and mississippi. antibody t ... | 1992 | 1624561 |
| etiologic agent of lyme disease, borrelia burgdorferi, detected in ticks (acari: ixodidae) collected at a focus in alabama. | the study was conducted at sites of known transmission of borrelia burgdorferi in east central alabama. the objectives were to determine species of ticks present at these sites, their host associations, and species of ticks and small mammals naturally infected with b. burgdorferi. a total of 451 hosts were examined for ticks, including cotton mice, peromyscus gossypinus (le conte); cotton rats, sigmodon hispidus say & ord; southern short-tailed shrews, blarina carolinensis (bachman); house mice, ... | 1991 | 1941933 |
| experimental infection of the cotton mouse (peromyscus gossypinus) with venezuelan equine encephalomyelitis virus. | | 1974 | 4429188 |
| toxicity of carbofuran lindane to the old-field mouse (peromyscus polionotus) and the cotton mouse (p. gossypinus). | | 1980 | 6156732 |
| bot fly (cuterebra fontinella fontinella) parasitism of cotton mice (peromyscus gossypinus) on st. catherines island, georgia. | from february 1993 through october 1994, 382 cotton mice (peromyscus gossypinus) were live-trapped and examined for bot fly (cuterebra fontinella fontinella) larvae. thirty-nine (10%) of the mice were parasitized by a total of 44 bot fly larvae. all bots were situated in the inguinal or lower abdominal region of the mice. monthly data strongly suggested that this bot is bivoltine at this latitude with distinct summer and winter population peaks. prevalence of parasitism was highest in june 1994 ... | 1995 | 7472877 |
| fleas (siphonaptera) of cotton mice on a georgia barrier island: a depauperate fauna. | from february 1993 through october 1994, 382 cotton mice peromyscus gossypinus were live-trapped and examined for fleas on st. catherines island, liberty county, georgia. orchopeas leucopus was the only species of flea collected, with an overall prevalence of 27% and a mean intensity of 3.8. this flea was more abundant on cotton mice during the cooler months, with peak infestation indices recorded in march 1993 and in january 1994. five species of fleas (polygenis gwyni, stenoponia americana, ct ... | 1995 | 7623192 |
| relative utilization of reptiles and rodents as hosts by immature ixodes scapularis (acari: ixodidae) in the coastal plain of north carolina, usa. | the interaction of immature black-legged ticks, ixodes scapularis, with reptiles and rodents was investigated in various woodland habitats in the coastal plain of north carolina. reptiles were sampled from april 1 to september 30, 1991. no ticks were found on 95 specimens representing 16 species of snakes. ticks were found on 54 (36.7%) of 147 lizards. i. scapularis was the only tick recovered from lizards. some lizards were collected in drift fence traps each month of the study except august. c ... | 1993 | 7628223 |
| natural occurrence and characterization of the lyme disease spirochete, borrelia burgdorferi, in cotton rats (sigmodon hispidus) from georgia and florida. | this is the first report of natural infection by borrelia burgdorferi in the cotton rat sigmodon hispidus. nine b. burgdorferi isolates were obtained from ear tissues, urinary bladders, or both, by culturing tissues in bskii medium. the rat from which the si-3 isolate was cultured was from the same site (sapelo island, georgia) as an infected cotton mouse peromyscus gossypinus and ixodes scapularis tick reported previously. the 8 b. burgdorferi isolates from rats in florida included 1 (ai-1) fro ... | 1995 | 7876974 |
| isolation and transmission of the lyme disease spirochete from the southeastern united states. | the isolation of the lyme disease spirochete (borrelia burgdorferi) from the southeastern united states is reported. three isolates, two from cotton mice (peromyscus gossypinus) and one from the black-legged tick (ixodes scapularis), were recovered from sapelo island, georgia, in july and september 1991. the spirochetes were characterized by indirect fluorescent antibody assay using a battery of five monoclonal antibodies, by sodium dodecyl sulfate/polyacrylamide gel electrophoresis (sds/page) o ... | 1993 | 8346258 |
| parasitic arthropods of sympatric opossums, cotton rats, and cotton mice from merritt island, florida. | six species of parasitic arthropods were collected from 12 opossums (didelphis virginiana), 8 species were obtained from 28 cotton rats (sigmodon hispidus), and 4 species were collected from 10 cotton mice (peromyscus gossypinus) from merritt island, brevard county, florida. the flea polygenis gwyni was the only parasite that infested all 3 host species, and it was present in very high densities (mean intensity = 73.7) on the opossums. the american dog tick, dermacentor variabilis, and the tropi ... | 1993 | 8459341 |
| ticks (acari: ixodidae) in bulloch county, georgia. | an 18-mo study was conducted in bulloch county, georgia, to determine tick species composition, seasonal activity of individual tick species, and host-tick associations. the following 7 methods of tick collection were included: (1) live trapping of potential host animals, (2) checking wild game, (3) drag sampling, (4) carbon dioxide attraction, (5) checking livestock, road kills, nests, and burrows, (6) samples submitted from veterinarians, and (7) ticks collected by local residents and submitte ... | 1996 | 8742526 |
| antibodies to arthropod-borne encephalitis viruses in small mammals from southern florida. | from 1987 through 1991, blood samples were collected from 10 species of small mammals in indian river country, florida (usa). sera from 1,347 animals were analyzed for hemagglutination-inhibition (hi) antibody to st. louis encephalitis (sle) and eastern equine encephalitis (eee) viruses. of these, 75 (5.6%) were positive for hi antibody to sle virus and 121 (9.0%) were positive for eee antibody. sera from five mammalian species were tested for neutralizing (nt) antibody to sle, eee, highlands j ... | 1996 | 8827668 |
| black creek canal virus infection in sigmodon hispidus in southern florida. | a total of 1,500 small mammals were collected and tested for antibodies cross-reactive to sin nombre virus (hantavirus: bunyaviridae) at 89 sites in a 1,600 km2 study area of southern florida. more than 95% of the 123 seropositive animals were cotton rats (sigmodon hispidus), suggesting infection by black creek canal virus, although seroreactive rattus rattus (5 of 294) and peromyscus gossypinus (1 of 39) also were captured. crude seroprevalence in s. hispidus was 11%. seroprevalence increased w ... | 1998 | 9840584 |
| antibodies to granulocytic ehrlichiae in white-footed and cotton mice in eastern united states. | serum samples, collected from peromyscus leucopus (white-footed mouse) or peromyscus gossypinus (cotton mouse) during 1987 through 1990 in florida, georgia, maryland, mississippi, and north carolina (usa), and in 1997 in southern connecticut were analyzed by indirect fluorescent antibody (ifa) staining methods or western blot procedures for antibodies to granulocytic ehrlichiae. of the 82 sera from white-footed mice in connecticut tested by ifa methods with either the bds or nch-1 strain of the ... | 1999 | 10231752 |
| isolation, cultivation, and characterization of borrelia burgdorferi from rodents and ticks in the charleston area of south carolina. | twenty-eight borrelia burgdorferi isolates from the charleston, s.c., area are described. this represents the first report and characterization of the lyme disease spirochete from that state. the isolates were obtained from december 1994 through december 1995 from the tick ixodes scapularis, collected from vegetation, and from the rodents peromyscus gossypinus (cotton mouse), neotoma floridana (eastern wood rat), and sigmodon hispidus (cotton rat). all isolates were screened immunologically by i ... | 2000 | 10618074 |
| the fleas (siphonaptera) of south carolina with an assessment of their vectorial importance. | we document 25 species of fleas from south carolina including new state records for two species, the ctenophthalmids epitedia cavernicola and rhadinopsylla orama. host and other collection data, by county, are provided, including many new records amassed from 1992-1998 and some older records gleaned from the clemson university arthropod collection. one flea species, the rhopalopsyllid polygenis gwyni, is especially common and widespread in south carolina, particularly on the cotton rat (sigmodon ... | 1999 | 10672546 |
| rodent ectoparasites from two locations in northwestern florida. | from feb.-apr. 1999, 19 species of ectoparasitic arthropods (2 sucking lice, 4 fleas, 4 ticks, 2 mesostigmatid mites, 5 chiggers, 2 fur mites) were recovered from 106 rodents belonging to 5 species (cotton mouse, peromyscus gossypinus, n = 64; cotton rat, sigmodon hispidus, n = 23; eastern woodrat, neotoma floridana, n = 9; golden mouse, ochrotomys nuttalli, n = 9; eastern gray squirrel, sciurus carolinensis, n = 1) at tall timbers research station, leon county, florida. during the same period, ... | 2000 | 11217221 |
| genetic heterogeneity of borrelia burgdorferi sensu lato in the southern united states based on restriction fragment length polymorphism and sequence analysis. | fifty-six strains of borrelia burgdorferi sensu lato, isolated from ticks and vertebrate animals in missouri, south carolina, georgia, florida, and texas, were identified and characterized by pcr-restriction fragment length polymorphism (rflp) analysis of rrf (5s)-rrl (23s) intergenic spacer amplicons. a total of 241 to 258 bp of intergenic spacers between tandemly duplicated rrf (5s) and rrl (23s) was amplified by pcr. msei and drai restriction fragment polymorphisms were used to analyze these ... | 2001 | 11427560 |
| host associations of ticks parasitizing rodents at borrelia burgdorferi enzootic sites in south carolina. | a total of 237 rodents was collected in 4 regions of south carolina from july 1994 through december 1995. eight species were collected, including cotton mouse, hispid cotton rat, eastern woodrat, marsh rice rat, white-footed mouse, eastern harvest mouse, golden mouse, and black rat. of the 1,514 ticks recovered from these hosts, ixodes minor neumann, including larvae, nymphs, and adults, was the most abundant species, representing 54% of the total. only immature stages of other tick species were ... | 2001 | 11780825 |
| venezuelan equine encephalitis virus from south florida. | venezuelan equine encephalitis virus was isolated three times from the culex (melanoconion) species of mosquitoes collected in south florida in june, july, and october, 1963. specific antibody was present in 16 of 28 peromyscus gossypinus (cotton mice) and 3 of 16 sigmodon hispidus (cotton rats) sampled from one of the infected sites in january 1964. | 1964 | 14171567 |
| an enzootic transmission cycle of lyme borreliosis spirochetes in the southeastern united states. | lyme borreliosis, or lyme disease (ld), is a tick-borne zoonotic infection of biomedical significance, caused by borrelia burgdorferi sensu lato (s.l.) spirochetes and transmitted by ixodes species ticks. it usually circulates among wildlife vertebrate reservoirs and vector ticks but may infect humans, causing multisystem problems. in far western and northern north america, the host reservoirs, tick vectors, and genospecies of borrelia are well known but not so in the southern u.s., where there ... | 2003 | 14500917 |
| borrelia species in host-seeking ticks and small mammals in northern florida. | the aim of this study was to improve understanding of several factors related to the ecology and environmental risk of borrelia infection in northern florida. small mammals and host-seeking adult ticks were collected at several sites, and specimens were tested for the presence of borrelia species, primarily by pcr amplification. tissues from some vertebrates and ticks were initially cultured in bsk-h medium to isolate spirochetes, but none were recovered. however, comparison of partial flagellin ... | 2004 | 15528699 |
| ectoparasites and other epifaunistic arthropods of sympatric cotton mice and golden mice: comparisons and implications for vector-borne zoonotic diseases. | ectoparasite and epifaunistic arthropod biodiversity and infestation parameters were compared between 2 sympatric small rodent species, the cotton mouse (peromyscus gossypinus (le conte)) and golden mouse (ochrotomys nuttalli (harlan)), in southern georgia from 1992 to 2003. because the cotton mouse is known to be a reservoir of more vector-borne zoonotic pathogens than the golden mouse, we hypothesized that it would be parasitized by more ectoparasites that are known to be vectors of these path ... | 2004 | 15715219 |
| patterns of avian nest predators and a brood parasite among restored riparian habitats in agricultural watersheds. | in fragmented edge-dominated landscapes, nest predation and brood parasitism may reduce avian reproductive success and, ultimately, populations of some passerine species. in the fragmented agroecosystem of northwest mississippi, placement of drop-pipe structures has been used as a restoration technique for abating gully erosion along stream banks. these actions have formed small herbaceous and woody habitat extensions into former agricultural lands. we quantified species relative abundances, spe ... | 2005 | 16160783 |
| tick infestations of the eastern cottontail rabbit (sylvilagus floridanus) and small rodentia in northwest alabama and implications for disease transmission. | studies were conducted over a four-county area of northwest alabama to determine the association of eastern cottontail rabbits with dermacentor variabilis, the eastern united states vector of rocky mountain spotted fever. a secondary objective was to compare infestations of this tick on rabbits with infestations on commonly encountered rodent species as a means of determining the relative importance of each in the disease transmission cycle. these epidemiologic surveys were conducted in response ... | 2005 | 16599149 |
| concentration ratios for small mammals collected from the exposed sediments of a 137cs contaminated reservoir. | (137)cs concentration ratios were computed for small mammals collected from the dried sediments of a partially drained, contaminated reservoir. soil (137)cs activity concentrations were heterogeneous on small and large spatial scales and had a geometric mean of 253 (range 23-2110) bq/kg dry weight. mean (137)cs activity concentrations in composite cotton rat sigmodon hispidus and cotton mouse peromyscus gossypinus samples averaged 2480 (range 556-6670) and 471 (range 96-1000) bq/kg whole body dr ... | 2006 | 16963166 |
| borrelia carolinensis sp. nov., a new (14th) member of the borrelia burgdorferi sensu lato complex from the southeastern region of the united states. | approximately 118 borrelia isolates were cultured from a variety of rodents, birds, and ticks collected in the southern united states. in addition to a highly diverse group of borrelia bissettii strains and a homogenous group of borrelia burgdorferi sensu stricto strains, a group of 16 isolates with unusual characteristics was found. the isolates were cultured from ear biopsy samples of the rodents peromyscus gossypinus and neotoma floridana trapped at five localities in south carolina. a multil ... | 2009 | 19020062 |
| borrelia carolinensis sp. nov., a novel species of the borrelia burgdorferi sensu lato complex isolated from rodents and a tick from the south-eastern usa. | a group of 16 isolates with genotypic characteristics different from those of known species of the borrelia burgdorferi sensu lato complex were cultured from ear biopsies of the rodents peromyscus gossypinus and neotoma floridana trapped at five localities in south carolina, usa, and from the tick ixodes minor feeding on n. floridana. multilocus sequence analysis of members of the novel species, involving the 16s rrna gene, the 5s-23s (rrf-rrl) intergenic spacer region and the flagellin, ospa an ... | 2011 | 20305062 |
| novel hepatozoon in vertebrates from the southern united states. | abstract novel hepatozoon spp. sequences collected from previously unrecognized vertebrate hosts in north america were compared with documented hepatozoon 18s rrna sequences in an effort to examine phylogenetic relationships between the different hepatozoon organisms found cycling in nature. an approximately 500 base pair fragment of 18s rdna common to hepatozoon spp. and some other apicomplexans was amplified and sequenced from the tissues or blood of 16 vertebrate host species from the souther ... | 2011 | 21506825 |
| the rare ospc allele l of borrelia burgdorferi sensu stricto, commonly found among samples collected in a coastal plain area of the southeastern united states, is associated with ixodes affinis ticks and local rodent hosts peromyscus gossypinus and sigmodon hispidus. | the rare ospc allele l was detected in 30% of borrelia burgdorferi sensu stricto strains cultured from a tick species, ixodes affinis, and two rodent host species, peromyscus gossypinus and sigmodon hispidus, collected in a coastal plain area of georgia and south carolina, in the southeastern united states. | 2013 | 23220965 |
| amblyomma auricularium (ixodida: ixodidae) in florida: new hosts and distribution records. | previous published evidence for the occurrence of an exotic armadillo tick, amblyomma auricularium (conil), in florida is scant, but we found it is fully established and integrated into the state's tick fauna. we collected 11,192 specimens of this tick from naturalized nine-banded armadillos, dasypus novemcinctus l., and 14 other species of wild native mammals and birds in florida, while sampling statewide during 2004 through 2007. in all, we document its specific presence only in 14 contiguous ... | 2017 | 28082640 |
| a review of gongylonema spp. (nematoda: gongylonematidae) in north american rodents with description of a new species from the cotton rat, sigmodon hispidus (mammalia: cricetidae). | gongylonema archboldi n. sp. (nematoda: gongylonematidae) is described from tunnels in the gastric mucosa of the stomach of the cotton rat (sigmodon hispidus) from highlands county, florida, u.s.a. measurements are also given for specimens from cotton mice (peromyscus gossypinus), oldfield mice (peromyscus polionotus), florida mice (podomys floridanus), and golden mice (ochrotomys nuttalli) from the same locality. additional specimens were collected from the cotton rat and the rice rat (oryzomys ... | 2016 | 27394819 |
| sexual imprinting and speciation between two peromyscus species. | sexual isolation, a reproductive barrier, can prevent interbreeding between diverging populations or species. sexual isolation can have a clear genetic basis; however, it may also result from learned mate preferences that form via sexual imprinting. here, we demonstrate that two sympatric species of mice-the white-footed mouse (peromyscus leucopus) and its sister species, the cotton mouse (p. gossypinus)-hybridize only rarely in the wild despite co-occurrence in the same habitat and lack of any ... | 2017 | 29231989 |
| validating mammalian resistance to stressor-mediated reproductive impact using rodent sperm analysis. | small rodents from chemically and radiologically contaminated areas on the savannah river site, sc were evaluated for sensitive reproductive parameters in a dual purpose study. the primary intent was to observe if established reproductive thresholds-for effect could be exceeded in animals that, due to their restricted home ranges, are maximally exposed to local contamination. secondarily, validation was sought for a principal element of the rodent sperm analysis method that is used in support of ... | 2016 | 26879951 |
| effects of variations in copulatory behavior on pregnancy in two species of peromyscus. | stimulation requirements for the initiation of pregnancy were studied in cotton mice, peromyscus gossypinus, and white-footed mice, p. leucopus. mating to satiety rather than for one ejaculatory series significantly increased the per cent of p. gossypinus females pregnant (63% vs 0%). among females mated to satiety, those which became pregnant received significantly more copulations than those which did not. while no p. leucopus female mated for one ejaculatory series became pregnant, the increa ... | 1976 | 14677583 |
| the importance of species: pygmy rattlesnake venom toxicity differs between native prey and related non-native species. | venom toxicity assessments are often based upon non-native surrogate prey species that are not consumed in the wild by the venomous predator. this raises questions about the relevance of toxicity results on these "model" prey in addressing ecological or evolutionary questions about venom effects on native prey. we explore this issue by comparing the toxicity of venom from pygmy rattlesnakes (sistrurus miliarius) on taxonomically-diverse sets of model (non-native) and native prey. specifically, w ... | 2018 | 29410327 |
| diet-based assortative mating through sexual imprinting. | speciation is facilitated by "magic traits," where divergent natural selection on such traits also results in assortative mating. in animal populations, diet has the potential to act as a magic trait if populations diverge in consumed food that incidentally affects mating and therefore sexual isolation. while diet-based assortative mating has been observed in the laboratory and in natural populations, the mechanisms causing positive diet-based assortment remain largely unknown. here, we experime ... | 2019 | 31844516 |