| vertical distribution of soil removed by four species of burrowing rodents in disturbed and undisturbed soils. | burrow volumes were determined in disturbed and undisturbed soils for four species of rodents in southeastern idaho. comparisons were made between soil types for the average volume and the proportion of the total volume of soil excavated from 10-cm increments for each species, and the relative number of burrows and proportion of total soil removed from beneath the minimum thickness of soil covers over buried low-level radioactive wastes. burrows of montane voles (microtus montanus) and deer mice ... | 1988 | 3280518 |
| the primary structure and functional properties of the hemoglobins of a ground squirrel (spermophilus townsendii, rodentia). | the hemoglobin of the ground squirrel spermophilus townsendii consists of two components which are present in a ratio of ca. 2:1. the two hemoglobins have identical alpha-chains, but differ in their beta-chains. we present the primary structures of the alpha- and the two beta-globin chains. following chain separation by chromatography on carboxymethyl-cellulose cm-52, the amino-acid sequences were established by automatic edman degradation of the globin chains and the tryptic peptides, as well a ... | 1985 | 4063068 |
| serologic testing of badgers to monitor plague in southwestern idaho. | serologic testing of badgers (taxidea taxus) was used to monitor plague (yersinia pestis) in a townsend ground squirrel (spermophilus townsendi) population in 10,000 ha of the snake river birds of prey study area, idaho. eighty-six percent of the 294 sera tested in 1975 and in 1976 were positive. significantly fewer (72%) seropositives occurred in 1977. seasonal changes in the percentage of seropositives and the decline in 1977 were probably due to the phenology of the townsend ground squirrel a ... | 1983 | 6842729 |
| 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 |
| effects of tracking by armored vehicles on townsend's ground squirrels in the orchard training area, idaho, usa | / maintaining raptor populations is a primary objective of the legislation that designates the snake river birds of prey national conservation area. army training activities could influence habitat quality for raptors by changing the density, productivity, or behavior of their townsend's ground squirrel (spermophilus townsendii) prey. these changes could occur directly or as a result of changes in the vegetation available as food and cover for the ground squirrels. we assessed the effects of lon ... | 1998 | 9582397 |
| mammal and flea relationships in the great basin desert: from h. j. egoscue's collections. | host-parasite association among 58 flea species parasitizing 40 mammal species in the great basin desert of the western united states was investigated. increased flea species richness was correlated with larger geographic ranges and stable locomotion of hosts. hosts from habitats of moderately low productivity (sage and grass) and of peromyscus maniculatus size, 10-33 g, had the highest flea species richness. larger hosts had fewer flea species, but fleas were more prevalent. increased host spec ... | 2006 | 16729681 |
| two new species and temporal changes in the prevalence of eimerians in a free-living population of townsend's ground squirrels (spermophilus townsendii) in idaho. | more than 1,180 fecal samples were collected from 253 juvenile and 384 adult townsend's ground squirrels (spermophilus townsendii) at the snake river birds of prey area near boise, idaho, from february to june 1992. oocysts of 7 eimerians were observed. five are new host records (eimeria beecheyi, eimeria bilamellata, eimeria callospermophili, eimeria lateralis, and eimeria morainensis), 2 species are described here as new, and new structural information on e. morainensis is added. sporulated oo ... | 1994 | 8158469 |
| effects of small mammal burrows on water infiltration in a cool desert environment. | the hypothesis that small mammal burrows can increase the amount of water infiltrating into the soil profile was tested. the amount of water added to the soil profile from spring recharge in areas adjacent to ground squirrel (spermophilus townsendii and s. elegans) burrows was compared to nearby areas without burrows. recharge amounts in burrow areas were significantly higher than nonburrow areas. an average of 21% more of the winter precipitation infiltrated into the soil near burrows. the amou ... | 1993 | 28313856 |
| variation in renal structure and urine concentrating capacity among ground squirrels of the spermophilus townsendii complex (rodentia: sciuridae). | renal structure and urine concentrating capacity varied significantly among nine populations of desert ground squirrels representing four closely related taxa. variation in renal structure was weakly associated with taxonomic grouping. urine concentrating capacity was not correlated with standard measures of habitat were aridity, but it was correlated with soil salinity. maximum urine osmolalities for one population from the most saline habitat were among the highest documented for sciurid roden ... | 1989 | 2566419 |
| the chromosomes of spermophilus townsendi (rodentia: sciuridae) and report of a new subspecies. | | 1968 | 5653739 |