| it's a trap: optimizing detection of rare small mammals. | improving detection probabilities for rare species is critical when assessing presence or habitat associations. our goal was to create a new small mammal trapping protocol that improved detection of rare species, such as the olive-backed pocket mouse (perognathus fasciatus). we used three trap and bait types and trapped an area 4.4 times larger than the standard grid. we also assessed the effect of captures of non-target species on detection probability of pocket mice. regardless of species, tra ... | 2019 | 30835752 |
| the ecological dynamics of hantavirus diseases: from environmental variability to disease prevention largely based on data from china. | hantaviruses can cause hantavirus pulmonary syndrome (hps) in the americas and hemorrhagic fever with renal syndrome (hfrs) in eurasia. in recent decades, repeated outbreaks of hantavirus disease have led to public concern and have created a global public health burden. hantavirus spillover from natural hosts into human populations could be considered an ecological process, in which environmental forces, behavioral determinants of exposure, and dynamics at the human-animal interface affect human ... | 2019 | 30789905 |
| predator-mediated effects of severe drought associated with poor reproductive success of a seabird in a cross-ecosystem cascade. | despite the profound impacts of drought on terrestrial productivity in coastal arid ecosystems, only a few studies have addressed how drought can influence ecological cascades across ecosystem boundaries. in this study, we examine the consequences of rainfall pulses and drought that subsequently impact the breeding success of a threatened nocturnal seabird, the scripps's murrelet (synthliboramphus scrippsi). on an island off the coast of southern california, the main cause of reduced nest succes ... | 2019 | 30773758 |
| differential regulation of the unfolded protein response in outbred deer mice and susceptibility to metabolic disease. | endoplasmic reticulum (er) stress has been causatively linked to the onset of various pathologies. however, whether and how inherent variations in the resulting unfolded protein response (upr) affect predisposition to er-stress-associated metabolic conditions remains to be established. by using genetically diverse deer mice (peromyscus maniculatus) as a model, we show that the profile of tunicamycin-induced upr in fibroblasts isolated at puberty varies between individuals and predicts deregulati ... | 2019 | 30733237 |
| effects of the captive and wild environment on diversity of the gut microbiome of deer mice (peromyscus maniculatus). | vertebrate gastrointestinal tracts have co-existed with microbes over millennia. these microbial communities provide their host with numerous benefits. however, the extent to which different environmental factors contribute to the assemblage of gut microbial communities is not fully understood. the purpose of this study was to determine how the external environment influences the development of gut microbiome communities (gmcs). faecal samples were collected from deer mice (peromyscus maniculatu ... | 2019 | 30664674 |
| sibling rivalry: males with more brothers develop larger testes. | when females mate with multiple partners in a reproductive cycle, the relative number of competing sperm from rival males is often the most critical factor in determining paternity. gamete production is directly related to testis size in most species, and is associated with both mating behavior and perceived risk of competition. deer mice, peromyscus maniculatus, are naturally promiscuous and males invest significantly more in sperm production than males of p. polionotus, their monogamous sister ... | 2018 | 30250695 |
| ecological processes determining the distribution dynamics of vole populations during forest succession. | the size and distribution of animal populations may vary drastically over time following a disturbance event. while both competition and predation can control the size of animal populations, changes in the relative importance of these two density-dependent processes remain poorly documented during ecological succession. here, we combined habitat selection and optimal foraging theory to identify the processes that can explain the increase in red-backed voles (myodes gapperi) during post-logging f ... | 2018 | 30244315 |
| evolved changes in breathing and co2 sensitivity in deer mice native to high altitudes. | we examined the control of breathing by o2 and co2 in deer mice native to high altitude to help uncover the physiological specializations used to cope with hypoxia in high-altitude environments. highland deer mice ( peromyscus maniculatus) and lowland white-footed mice ( p. leucopus) were bred in captivity at sea level. the first and second generation progeny of each population was raised to adulthood and then acclimated to normoxia or hypobaric hypoxia (12 kpa o2, simulating hypoxia at ~4,300 m ... | 2018 | 30183337 |
| assessment of chronic low-dose elemental and radiological exposures of biota at the kanab north uranium mine site in the grand canyon watershed. | high-grade u ore deposits are in various stages of exploitation across the grand canyon watershed, yet the effects of u mining on ecological and cultural resources are largely unknown. we characterized the concentrations of al, as, bi, cd, co, cu, fe, pb, hg, mo, ni, se, ag, tl, th, u, and zn, gross alpha and beta activities, and u and th radioisotopes in soil, vegetation (hesperostipa comata, artemisia tridentata, tamarix chinensis), and rodents (peromyscus maniculatus, p. boylii) to waste mate ... | 2019 | 30136757 |
| acclimatization of low altitude-bred deer mice ( peromyscus maniculatus) to high altitude. | a colony of deer mice subspecies ( peromyscus maniculatus sonoriensis) native to high altitude (ha) has been maintained at sea level for 18-20 generations and remains genetically unchanged. to determine if these animals retain responsiveness to hypoxia, one group (9-11 wk old) was acclimated to ha (3,800 m) for 8 wk. age-matched control animals were acclimated to a lower altitude (la; 252 m). maximal o2 uptake (v̇o2max) was measured at the respective altitudes. on a separate day, lung volume, di ... | 2018 | 30091664 |
| an updated genetic map of peromyscus with chromosomal assignment of linkage groups. | species across the rodent genus peromyscus have become prominent models for studying diverse mechanistic and evolutionary processes, including chromosome evolution, infectious disease transmission and human health, ecological adaptation, coat color variation, and parental care. supporting such diverse research programs has been the development of genetic and genomic resources for species within this genus, including genome data, interspecific chromosome homologies, and a recently developed genet ... | 2018 | 29947964 |
| novel focus of sin nombre virus in peromyscus eremicus mice, death valley national park, california, usa. | the deer mouse (peromyscus maniculatus) is the primary reservoir for sin nombre virus (snv) in the western united states. rodent surveillance for hantavirus in death valley national park, california, usa, revealed cactus mice (p. eremicus) as a possible focal reservoir for snv in this location. we identified snv antibodies in 40% of cactus mice sampled. | 2018 | 29774841 |
| impact of sylvatic plague vaccine on non-target small rodents in grassland ecosystems. | oral vaccination is an emerging management strategy to reduce the prevalence of high impact infectious diseases within wild animal populations. plague is a flea-borne zoonosis of rodents that often decimates prairie dog (cynomys spp.) colonies in the western usa. recently, an oral sylvatic plague vaccine (spv) was developed to protect prairie dogs from plague and aid recovery of the endangered black-footed ferret (mustela nigripes). although oral vaccination programs are targeted toward specific ... | 2018 | 29744628 |
| the deer mouse (peromyscus maniculatus) as an enzootic reservoir of plague in california. | it has long been theorized that deer mice (peromyscus maniculatus) are a primary reservoir of yersinia pestis in california. however, recent research from other parts of the western usa has implicated deer mice as spillover hosts during epizootic plague transmission. this retrospective study analyzed deer mouse data collected for plague surveillance by public health agencies in california from 1971 to 2016 to help elucidate the role of deer mice in plague transmission. the fleas most commonly fo ... | 2018 | 29700709 |
| back to basics: a methodological perspective on marble-burying behavior as a screening test for psychiatric illness. | animal models of human psychiatric illness are valuable frameworks to investigate the etiology and neurobiology underlying the human conditions. accurate behavioral measures that can be used to characterize animal behavior, thereby contributing to a model's validity, are crucial. one such measure, i.e. the rodent marble-burying test (mbt), is often applied as a measure of anxiety- and compulsive-like behaviors. however, the test is characterized by noteworthy between-laboratory methodological di ... | 2018 | 29694852 |
| intersecting paths of emerging and reemerging infectious diseases. | severe acute respiratory syndrome coronavirus 2 (sars-cov-2) shares common clinicopathologic features with other severe pulmonary illnesses. hantavirus pulmonary syndrome was diagnosed in 2 patients in arizona, usa, suspected of dying from infection with sars-cov-2. differential diagnoses and possible co-infections should be considered for cases of respiratory distress during the sars-cov-2 pandemic. | 2021 | 33704045 |
| sars-cov-2 infection, neuropathogenesis and transmission among deer mice: implications for spillback to new world rodents. | coronavirus disease-19 (covid-19) emerged in late 2019 in china and rapidly became pandemic. as with other coronaviruses, a preponderance of evidence suggests the virus originated in horseshoe bats (rhinolophus spp.) and may have infected an intermediate host prior to spillover into humans. a significant concern is that sars-cov-2 could become established in secondary reservoir hosts outside of asia. to assess this potential, we challenged deer mice (peromyscus maniculatus) with sars-cov-2 and f ... | 2021 | 34010360 |
| continuing orthohantavirus circulation in deer mice in western montana. | hantavirus pulmonary syndrome (hps) is an often-fatal disease caused by new world hantaviruses, such as sin nombre orthohantavirus (snv). in the us, >800 cases of hps have been confirmed since it was first discovered in 1993, of which 43 were reported from the state of montana. the primary cause of hps in the us is snv, which is primarily found in the reservoir host peromyscus maniculatus (deer mouse). the reservoir host covers most of the us, including montana, where multiple studies found snv ... | 2021 | 34072112 |