| angiostrongylus michiganensis sp. n. (nematoda: metastrongyloidea), a lungworm occurring in the shrew, sorex cinereus cinereus, in michigan. | | 1967 | 6026853 |
| lung parasites of shrews from pennsylvania. | we examined lung parasites of three species of soricids, sorex cinereus (n = 58), sorex fumeus (n = 23) and blarina brevicauda (n = 45) collected from pennsylvania (usa), from 1990 to 1995. yeast-like cells of hisfoplasma capsulatum var. capsulatum were found in lung sections stained with grocott's modification of gomori's methenamine silver, periodic acid-schiff, giemsa, and hematoxylin-eosin in two (3%) s. cinereus, eight (35%) s. fumeus and two (4%) b. brevicauda. the number of spores of h. c ... | 1997 | 9131560 |
| natural infection of small mammal species in minnesota with the agent of human granulocytic ehrlichiosis. | the natural reservoirs for the agent of human granulocytic ehrlichiosis (hge) are suspected to be the small mammals that host immature stages of ixodes scapularis ticks. to determine if such small mammals are naturally infected, we collected blood and serum samples from small mammal species in rural and suburban areas of minneapolis and st. paul, minn. samples were collected from white-footed mice (peromyscus leucopus), eastern chipmunks (tamias striatus), southern red-backed voles (clethrionomy ... | 1997 | 9157141 |
| blood parasites of shrews from pennsylvania. | we examined 30 sorex cinereus, 5 sorex fumeus, and 21 blarina brevicauda collected from pennsylvania in 1995 for blood parasites. trypomastigotes of trypanosoma sp. were visible in 13% of the s. cinereus. ten percent of s. cinereus, 20% of s. fumeus, and 14% of b. brevicauda were infected with bartonella sp. (or spp.). in s. cinereus, we detected no concurrent trypanosoma and bartonella infections. | 1998 | 9920338 |
| attempted isolation of blastomyces dermatitidis from native shrews in northern wisconsin, usa. | the precise ecological niche of blastomyces dermatitidis is unknown. the related dimorphic fungus, paracoccidioides brasiliensis, has been isolated from south american ground-dwelling insectivorous armadillos. we attempted to isolate blastomyces from shrews, north american ground-dwelling insectivores that have been shown to harbor histoplasma capsulatum in endemic areas. forty-seven masked shrews (sorex cinereus) and 13 northern short-tailed shrews (blarina brevicauda) were collected in endemic ... | 2005 | 16178369 |
| prevalence of bordetella bronchiseptica in certain central iowa. | bordetella bronchiseptica was isolated from 6 of 13 short-tailed shrews (blarina brevicauda) and 1 of 47 house sparrows (passer domesticus) trapped in the vicinity of a swine bordetella rhinitis experimental area. the organism was found in four of 50 foxes (vulpes fulva), 2 of 36 opossums (didelphis marsupialis) and 1 of 37 raccoons (procyon lotor) trapped in the ames, iowa area. this bacterium was not culturally isolated from 14 deer mice (peromyscus maniculatus), 64 house mice (mus musculus), ... | 1976 | 16502690 |
| prevalence of cryptosporidium species in wildlife populations within a watershed landscape in southeastern new york state. | a cross-sectional study was conducted to determine the prevalence of cryptosporidium in wildlife in the new york city (nyc) watershed in southeastern new york state. a total of 6227 fecal samples were collected and evaluated from 5892 mammals (38 species), 263 birds (14 species), 2 reptiles (2 species), 8 amphibians (4 species), and 62 fish (15 species). cryptosporidium was detected in 30 species. of the species found positive for cryptosporidium, 16 represented new records for this parasite-alo ... | 2007 | 17466459 |
| phylogenetically distinct hantaviruses in the masked shrew (sorex cinereus) and dusky shrew (sorex monticolus) in the united states. | a limited search for hantaviruses in lung and liver tissues of sorex shrews (family soricidae, subfamily soricinae) revealed phylogenetically distinct hantaviruses in the masked shrew (sorex cinereus) from minnesota and in the dusky shrew (sorex monticolus) from new mexico and colorado. the discovery of these shrew-borne hantaviruses, named ash river virus and jemez springs virus, respectively, challenges the long-held dogma that rodents are the sole reservoir hosts and forces a re-examination o ... | 2008 | 18256444 |
| response to enrichment, type and timing: small mammals vary in their response to a springtime cicada but not a carbohydrate pulse. | 1. masting events in the autumn provide a carbohydrate-rich pulse of resources that can influence the dynamics of small mammals and their natural enemies. similar patterns are observed with the periodical cicada emergence which provides a protein-rich pulse in the spring, but comparisons are confounded by timing and food type. 2. we compared the influence of a naturally occurring spring pulse of cicadas with an experimental spring pulse of carbohydrate-rich seeds. we used a replicated population ... | 2009 | 18684131 |
| cortical organization in insectivora: the parallel evolution of the sensory periphery and the brain. | insectivores are traditionally described as a primitive group that has not changed much in the course of mammalian evolution. in contrast, recent studies reveal a great diversity of sensorimotor specializations among insectivores adapted to a number of different ecological niches, indicating that there has been significant diversification and change in the course of their evolution. here the organization of sensory cortex is compared in the african hedgehog (atelerix albiventris), the masked shr ... | 2000 | 10971016 |
| cortical organization in shrews: evidence from five species. | cortical organization was examined in five shrew species. in three species, blarina brevicauda, cryptotis parva, and sorex palustris, microelectrode recordings were made in cortex to determine the organization of sensory areas. cortical recordings were then related to flattened sections of cortex processed for cytochrome oxidase or myelin to reveal architectural borders. an additional two species (sorex cinereus and sorex longirostris) with visible cortical subdivisions based on histology alone ... | 1999 | 10397395 |
| comparative morphology and morphometry of the nasal fossae of four species of north american shrews (soricinae). | the present study compares the morphology of the nasal conchae and the relative development (i.e., surface area and neurosensory cell number) of the olfactory epithelium between four species of shrews occupying different ecotopes (blarina brevicauda, sorex cinereus, s. fumeus, s. palustris). the number of olfactory cells was corrected for split cell error. data were analyzed by using size indices based on the allometric method. the convoluted shape of the maxilloturbinal in blarina, with large r ... | 1989 | 2618929 |
| a comparative study of certain trigeminal components in two soricid shrews, blarina brevicauda and sorex cinereus. | | 1957 | 13475504 |
| prey choice by marten during a decline in prey abundance. | we examined variation in diet choice by marten (martes americana) among seasons and between sexes and ages from 1980-1985. during this period prey populations crashed simultaneously, except for ruffed grouse (bonasa umbellus) which was common at the beginning and end of the study, and masked shrews (sorex cinereus) which were abundant in 1983. marten were catholic in selection of prey and made use of most available mammalian prey, ruffed grouse, passerine birds, berries, and insects. diet niche ... | 1990 | 28313176 |
| two new species of staphylocystoides yamaguti, 1959 (cyclophyllidea: hymenolepididae) from the masked shrew sorex cinereus in north america. | two new species of staphylocystoides are described from masked shrews sorex cinereus: staphylocystis oligospinosus n. sp. was collected from the vicinity of missoula, montana, united states and staphylocystoides parasphenomorphus n. sp. was collected from the vicinity of whitehorse, yukon territory, canada. morphological differentiation from known species is provided. both species are morphologically closest to staphylocystoides sphenomorphus and to each other. among other characters, staphylocy ... | 2018 | 29182486 |
| accumulation of methylmercury in invertebrates and masked shrews (sorex cinereus) at an upland forest-peatland interface in northern minnesota, usa. | mercury (hg) methylation is often elevated at the terrestrial-peatland interface, but methylmercury (mehg) production at this "hot spot" has not been linked with in situ biotic accumulation. we examined total hg and mehg levels in peat, invertebrates and tissues of the insectivore sorex cinereus (masked shrew), inhabiting a terrestrial-peatland ecotone in northern minnesota, usa. mean mehg concentrations in s. cinereus (71 ng g-1) fell between concentrations measured in spiders (mean 70-140 ng g ... | 2017 | 29063129 |
| a climate for speciation: rapid spatial diversification within the sorex cinereus complex of shrews. | the cyclic climate regime of the late quaternary caused dramatic environmental change at high latitudes. although these events may have been brief in periodicity from an evolutionary standpoint, multiple episodes of allopatry and divergence have been implicated in rapid radiations of a number of organisms. shrews of the sorex cinereus complex have long challenged taxonomists due to similar morphology and parapatric geographic ranges. here, multi-locus phylogenetic and demographic assessments usi ... | 2012 | 22652055 |
| arsenic speciation, distribution, and bioaccessibility in shrews and their food. | shrews (sorex cinereus) collected at a historic mine in nova scotia, canada, had approximately twice the arsenic body burden and 100 times greater daily intake of arsenic compared with shrews from a nearby uncontaminated background site. shrews store arsenic as inorganic and simple methylated arsenicals. much of the arsenic associated with their primary food source, i.e., small invertebrates, may be soil adsorbed to their exoskeletons. a physiologically based extraction test estimated that 47 ± ... | 2012 | 21986782 |
| splenic mass of masked shrews, sorex cinereus, in relation to body mass, sex, age, day of the year, and bladder nematode, liniscus (=capillaria) maseri, infection. | the spleen is an important organ of vertebrates. splenic mass can change in response to a variety of factors. we tested whether splenic mass of masked shrews, sorex cinereus, was related to sex, age, time of the year, or intensity of bladder nematode (liniscus [=capillaria] maseri) infection, after controlling for host body mass. for females, body mass was a strong predictor of splenic mass. for males, splenic masses were greater later in the year and in more heavily infected males. the latter a ... | 2009 | 18576853 |
| patterns of sequence variation in the mitochondrial d-loop region of shrews. | direct sequencing of the mitochondrial displacement loop (d-loop) of shrews (genus sorex) for the region between the trna(pro) and the conserved sequence block-f revealed variable numbers of 79-bp tandem repeats. these repeats were found in all 19 individuals sequenced, representing three subspecies and one closely related species of the masked shrew group (sorex cinereus cinereus, s. c. miscix, s. c. acadicus, and s. haydeni) and an outgroup, the pygmy shrew (s. hoyi). each specimen also posses ... | 1994 | 8121290 |
| a field study of growth and development of nestling masked shrews (sorex cinereus). | | 1976 | 1003045 |
| food and external parasites of sorex palustris and food of sorex cinereus from st. louis county, minnesota. | | 1973 | 4705264 |
| the nuclear anatomy of the diencephalon of sorex cinereus. | | 1953 | 13084780 |