| osmotic effectors in kidneys of xeric and mesic rodents: corticomedullary distributions and changes with water availability. | urea, sodium, the methylamines glycine betaine and glycerophosphorylcholine (gpc), and the polyols sorbitol and myo-inositol are reported to be the major osmolytes in kidneys of laboratory mammals. these were measured (millimoles per kilogram wet weight) in kidney regions and urines of three species of wild rodents with different dehydration tolerances: the pocket mouse perognathus parvus (xeric), vole microtus montanus (mesic), and deer mouse peromyscus m. gambeli (intermediate). in animals kep ... | 1988 | 3057002 |
| environmental and endogenous control of reproductive function in the great basin pocket mouse perognathus parvus. | pocket mice captured in the field at various times of year were introduced into laboratory experiments to examine the short-term sensitivity of reproductive function to environmental factors, principally day length, and the tendency of the reproductive system to become active spontaneously over longer durations. spontaneous enlargement and partial activation of the gonads occurred over the course of 4-5 mo in continuous darkness during the hibernation season. males held for 13 mo in 12l:12d show ... | 1984 | 6509135 |
| hemorrhagic gastritis in free-living rodents in idaho. | between february 1992 and march 1994, four species of rodent from the snake river birds of prey area near boise, idaho (usa) were necropsied. hemorrhagic gastritis was observed in 16 of 131 townsend's ground squirrels (spermophilus townsendii), one of 11 ord's kangaroo rats (dipodomys ordii) and the one great basin pocket mouse (perognathus parvus) evaluated. no lesions were observed in 14 white-footed deer mice (peromyscus maniculatus). tissue from one townsend's ground squirrel was negative fo ... | 1996 | 9359067 |
| apneic oxygen uptake in the torpid pocket mouse perognathus parvus. | the apneas of many torpid mammals can persist longer than estimated o2 stores allow. this suggests that some o2 is acquired during these apneas by either cutaneous uptake or by a nonventilatory flux down an open airway (tracheal flux). previous experiments confirmed apneic o2 uptake in the bat eptesicus fuscus with the conclusion that the uptake most likely occurred by tracheal flux. however, the bat's large cutaneous wing area remained a potential source of cutaneous o2 uptake, leaving uncertai ... | 1998 | 9798250 |
| effectiveness of six species of rodents as dispersers of singleleaf piñon pine (pinus monophylla). | the effectiveness of six species of rodents as dispersers of singleleaf piñon pine (pinus monophylla) was investigated in field enclosures. the rodent species were panamint kangaroo rat (dipodomys panamintinus), great basin pocket mouse (perognathus parvus), pinyon mouse (peromyscus truei), deer mouse (peromyscus maniculatus), least chipmunk (tamias minimus), and white-tailed antelope ground squirrel (ammospermophilus leucurus). five measures of seed harvesting and caching behavior were assessed ... | 2004 | 14534782 |
| surveillance for borrelia burgdorferi in ixodes ticks and small rodents in british columbia. | to determine the prevalence of borrelia burgdorferi in british columbian ticks, fieldwork was conducted over a 2-year period. in all, 893 ticks (ixodes pacificus, i. angustus, i. soricis, ixodes spp., and dermacentor andersoni) of different life stages were retrieved from 483 small rodents (peromyscus maniculatus, perognathus parvus, and reithrodontomys megalotis). b. burgdorferi dna was detected in 5 out of 359 tick pools, and 41 out of 483 mice were serologically confirmed to have antibodies a ... | 2015 | 26502354 |
| factors determining the abundance and distribution of rodents in a shrub-steppe ecosystem: the role of shrubs. | this study addressed the relative importances of shrub "resources" on a rodent community in a sagebrush dominated shrub-steppe ecosystem in southwestern wyoming. direct effects of shrubs (i.e., providing rodents with "food and cover") were assessed by removing shrubs from a 1.25 ha study plot and monitoring both rodent populations and their food resources. shrub architecture and shrub-related food resources were found to be unimportant to deermice (peromyscus maniculatus), great basin pocket mic ... | 1983 | 28310227 |
| geomylichus perognathi sp. n. (acari: listrophoridae) from perognathus spp. in the united states. | a new species of listrophorid mite, geomylichus perognathi, is described from pocket mice, perognathus parvus and p. fasciatus, from oregon, usa. it is closest to geomylichus brevispinosus and g. inaequalis, but is distinguished from those and all others in the genus by the following: (1) shape of the postcapular shield which is completely striated; (2) length of the postcapular shield; (3) striated membranes of coxae ii; (4) the different thickness of sc e; and (5) the length of l 5 in the male ... | 1980 | 7463254 |
| radiation effects in free-ranging pocket mice, perognathus parvus, during the breeding season. | captive and free-ranging great basin pocket mice, perognathus parvus, were exposed to ionizing radiation during the breeding season, april-june, in 1971. the values for the median lethal dose (ld(50)) at 30 days plus or minus the standard deviation were 880 +/- 14 rads and 780 +/- 27 rads, respectively, and the slopes of the survivorship curves were significantly different. these differences suggested that there was a synergism between radiation-induced and environmental sources of mortality, si ... | 1973 | 4683126 |
| effects of ionizing radiation on survival, longevity, and reproduction in free-ranging pocket mice, perognathus parvus. | | 1972 | 5012867 |
| detection of 'candidatus ehrlichia khabarensis' in rodents and ticks removed from rodents in british columbia, canada. | 'candidatus ehrlichia khabarensis' was first described from rodents and insectivores in the far east territory of khabarovsk on the russian pacific coast. here we report the detection of dna from this microorganism in rodents and fed ticks collected from rodents in british columbia, canada in 2013-2014. 'candidatus ehrlichia khabarensis' was detected in (i) a female ixodes angustus tick collected from a peromyscus maniculatus; (ii) a female dermacentor andersoni tick collected from a perognathus ... | 2020 | 31501035 |