Publications
| Title | Abstract | Year(sorted descending) Filter | PMID Filter |
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| new world camelids are sentinels for the presence of borna disease virus. | borna disease (bd), a frequently fatal neurologic disorder caused by borna disease virus 1 (bodv-1), has been observed for decades in horses, sheep, and other mammals in certain regions of europe. the bicoloured white-toothed shrew (crocidura leucodon) was identified as a persistently infected species involved in virus transmission. recently, bodv-1 attracted attention as a cause of fatal encephalitis in humans. here, we report investigations on bodv-1-infected llamas from a farm in a bd endemic ... | 2021 | 33501762 |
| borna disease outbreak with high mortality in an alpaca herd in a previously unreported endemic area in germany. | borna disease virus 1 (bodv-1) is the causative agent of borna disease, an often fatal neurologic condition of domestic mammals, including new world camelids, in endemic areas in central europe. recently, bodv-1 gained further attention by the confirmation of fatal zoonotic infections in humans. although borna disease and bodv-1 have been described already over the past decades, comprehensive reports of borna disease outbreaks in domestic animals employing state-of-the-art diagnostic methods are ... | 2020 | 32223069 |
| molecular survey for cyst-forming coccidia (toxoplasma gondii, neospora caninum, sarcocystis spp.) in mediterranean periurban micromammals. | rodents and other micromammals constitute important reservoirs of infectious diseases; their role in the life cycle of apicomplexan parasites such as toxoplasma gondii, neospora caninum, and sarcocystis spp. still needs clarification. in the present study, we analyzed by pcr and sanger sequencing methods the presence of specific parasite dna within brain and heart tissues of 313 individuals of five synanthropic small mammal species (apodemus sylvaticus, mus spretus, m. musculus, rattus rattus, a ... | 2020 | 32588173 |
| multilocus phylogeny and cryptic diversity of white-toothed shrews (mammalia, eulipotyphla, crocidura) in china. | crocidura, the most speciose mammalian genus, occurs across much of asia, europe and africa. the taxonomy of chinese representatives has been studied primarily based on cursory morphological comparisons and their molecular phylogenetic analyses remain unexplored. in order to understand the phylogeny of this group in china, we estimated the first multilocus phylogeny and conducted species delimitation, including taxon sampling throughout their distribution range. | 2020 | 32059644 |
| population dynamics of small endotherms under global change: greater white-toothed shrews crocidura russula in mediterranean habitats. | small endotherms would be especially exposed to main global change drivers (habitat and climate changes) but would also be able to withstand them by adjusting population dynamics locally to changing climate- and habitat-driven food and predation conditions. we analyse the relative importance of changes in climate (mean and variability, including relevant time-lags) and habitat conditions on the abundance, age structure and growth rate of mediterranean populations of a small endotherm, the greate ... | 2020 | 31810679 |
| geographical distribution of ljungan virus in small mammals in europe. | ljungan virus (lv), which belongs to the parechovirus genus in the picornaviridae family, was first isolated from bank voles (myodes glareolus) in sweden in 1998 and proposed as a zoonotic agent. to improve knowledge of the host association and geographical distribution of lv, tissues from 1685 animals belonging to multiple rodent and insectivore species from 12 european countries were screened for lv-rna using reverse transcriptase (rt)-pcr. in addition, we investigated how the prevalence of lv ... | 2020 | 32487013 |
| chromosomal differentiation in genetically isolated populations of the marsh-specialist crocidura suaveolens (mammalia: soricidae). | the genus crocidura represents a remarkable model for the study of chromosome evolution. this is the case of the lesser white-toothed shrew (crocidura suaveolens), a representative of the palearctic group. although continuously distributed from siberia to central europe, c. suaveolens is a rare, habitat-specialist species in the southwesternmost limit of its distributional range, in the gulf of cádiz (iberian peninsula). in this area, c. suaveolens is restricted to genetically isolated populatio ... | 2020 | 32131436 |
| the variable heartbeat of japanese moles (mogera spp.). | this report demonstrates the variable cardiac rhythm in two species of subterranean mole, the large japanese mole (mogera wogura) and the lesser japanese mole (mogera imaizumii). the phenomenon was revealed using x-ray videos of m. wogura and investigated in detail using electrocardiogram (ecg) traces recorded with implanted electrodes in this species and m. imaizumii. cessation of heartbeat and extended r-r intervals were observed in the ecgs from both species during short bouts of rest in wake ... | 2019 | 31612249 |
| detection of rabbit hemorrhagic disease virus gi.2/rhdv2/b in the mediterranean pine vole ( microtus duodecimcostatus) and white-toothed shrew ( crocidura russula). | the european wild rabbit ( oryctolagus cuniculus) is a key prey species on the iberian peninsula, and several predator species that are at risk of extinction are dependent on them as prey. a new rabbit hemorrhagic disease (rhd) virus genotype (gi.2/rhdv2/b) emerged in 2010 and posed a threat to wild rabbit populations. during a survey aimed at investigating rhd epidemiology in wild rabbits, gi.2/rhdv2/b was detected by duplex real-time pcr in carcasses of one mediterranean pine vole ( microtus d ... | 2019 | 30226801 |
| low prevalence of borna disease virus 1 (bodv-1) igg antibodies in humans from areas endemic for animal borna disease of southern germany. | borna disease virus-1 (bodv-1) was recently discovered as cause of severe and often fatal encephalitis in humans. bodv-1 is known to cause neurological disease in horses and sheep mainly in south and central germany. the virus is maintained in bicolored white-toothed shrews (crocidura leucodon). the incidence of infection and risk factors in humans are completely unresolved. veterinarians may be disproportionally bodv-1-exposed through contact to animals not recognized to be bodv-1 infected. we ... | 2019 | 31882942 |
| protocol for the reconstruction of micromammals from fossils. two case studies: the skulls of beremendia fissidens and dolinasorex glyphodon. | we have developed a protocol for reconstructing 3d models of the skulls of extinct species of small mammals. for the first time, the reconstruction uses fragments of fossils from a mixture of different specimens and from related extant species. we use free software and commercial computers to make the process reproducible and usable for the scientific community. we present a semi-quantitative protocol to face the problem of making 3d reconstructions of fossil species that are incomplete in the f ... | 2019 | 30893322 |
| demodex foveolator (acariformes: demodecidae) from crocidura suaveolens (soricomorpha: soricidae) – the second observation worldwide, and a checklist of the demodecid mites of soricomorphs | thus far, only six species of parasitic mites of the demodecidae family have been recorded in hosts from the soricomorpha: two from the common shrew (sorex araneus), two from the mediterranean water shrew (neomys anomalus), one from the lesser white-toothed shrew (crocidura suaveolens) and one from the european mole (talpa europaea). the present study describes the identification of demodex foveolator in c. suaveolens from the area of poland (the wielkopolska region). this is only the second rec ... | 2019 | 32191421 |
| characteristics of muscle fiber-type distribution in moles. | moles are a strictly fossorial soricomorpha species and possess a suite of specialized adaptations to subterranean life. however, the contractile function of skeletal muscles in moles remains unclear. we compared muscle fiber-type distribution in two mole species (the large japanese mole and lesser japanese mole) with that in four other soricomorpha species that are semi-fossorial, terrestrial, or semi-aquatic (the japanese shrew-mole, house shrew, japanese white-toothed shrew, and japanese wate ... | 2019 | 30376699 |
| ultrastructure of digenean trematode eggs (platyhelminthes: neoophora): a review emphasizing new comparative data on four european microphalloidea. | despite their tremendous diversity and their medical and veterinary importance, details of egg ultrastructure among the digenean trematodes has been studied rather little. the available literature is spread over several decades and several species, but has not been adequately reviewed to reveal patterns of similarity and divergence. we present this review to synthesize and analyse what is known from the available literature reporting studies using both transmission electron microscopy (tem) and ... | 2018 | 29351080 |
| phylogeography of the asian lesser white-toothed shrew, crocidura shantungensis, in east asia: role of the korean peninsula as refugium for small mammals. | many peninsulas in the temperate zone played an important role as refugia of various flora and fauna, and the southern korean peninsula also served as a refugium for many small mammals in east asia during the pleistocene. the asian lesser white-toothed shrew, crocidura shantungensis, is a widely distributed species in east asia, and is an appropriate model organism for exploring the role of the korean peninsula as a refugium of small mammals. here, we investigated phylogenetic relationships and ... | 2018 | 29441472 |
| molecular investigation of vector-borne parasites in wild micromammals, barcelona (spain). | information about the role of micromammals in the epidemiology of leishmania infantum and babesia sp. in southern europe is scarce. wild micromammals were captured in natural areas in the barcelona province (ne spain) in 2011 and analysed by real-time pcr for the presence of dna of piroplasmida (n = 253) and leishmania infantum (n = 166). the wood mouse (apodemus sylvaticus) was the most abundant species, but all specimens tested negative for l. infantum, for which two out of 15 (13.3%) white-to ... | 2018 | 29943318 |
| complete mitochondrial genome of the ussuri white-toothed shrew crocidura lasiura (insectivora, soricidae). | we obtained the complete mitochondrial genome of the ussuri white-toothed shrew crocidura lasiura (insectivora, soricidae) at 17 362 base pairs (bp) containing 13 protein-coding genes, two ribosomal rnas, 22 transfer rnas, and a non-coding control region. its gene order is identical to that of other vertebrates. several repeat elements were identified in the non-coding control region (d-loop). phylogenetic tree using mt protein-coding gene sequences showed that c. lasiura was closely related to ... | 2017 | 26710936 |
| parasitic infections of bicoloured white-toothed shrew (crocidura leucodon) from dasht-e-razan, western iran. | the prevalence and intensity of endo and ectoparasites in shrews inhabiting in the dasht-e razan of hamedan province, iran, were determined in this study. | 2017 | 28761469 |
| infections of horses and shrews with bornaviruses in upper austria: a novel endemic area of borna disease. | borna disease, a lethal infection with borna disease virus-1 (bodv-1), was diagnosed in four horses from upper austria in 2015 and 2016. all cases occurred in winter (two cases in february 2015 and two cases in december 2016), and the maximal distance of the affected stables was 17 km. to demonstrate whether the causative agent was also harbored by its reservoir host, the bicolored white-toothed shrew (crocidura leucodon), 28 shrews from this geographic area were collected in 2015 and investigat ... | 2017 | 28634359 |
| long-term data from a small mammal community reveal loss of diversity and potential effects of local climate change. | climate change affects distribution and persistence of species. however, forecasting species' responses to these changes requires long-term data series that are often lacking in ecological studies. we used 15 years of small mammal trapping data collected between 1978 and 2015 in 3 areas at doñana national park (southwest spain) to (i) describe changes in species composition and (ii) test the association between local climate conditions and size of small mammal populations. overall, 5 species wer ... | 2017 | 29492011 |
| dynamic circulation and genetic exchange of a shrew-borne hantavirus, imjin virus, in the republic of korea. | hantaviruses (family bunyaviridae) are enveloped negative-sense tripartite rna viruses. the natural hosts of hantaviruses include rodents, shrews, moles, and bats. imjin virus (mjnv) is a shrew-borne hantavirus identified from the ussuri white-toothed shrews (crocidura lasiura) in the republic of korea (rok) and china. we have isolated mjnv and determined its prevalence and molecular diversity in gyeonggi province, rok. however, the distribution and phylogeography of mjnv in other regions of rok ... | 2017 | 28295052 |
| detection of imjin virus and seoul virus in crocidurine shrews in shandong province, china. | recently, hantaviruses have been discovered in insectivores in europe, asia, africa, and north america. imjin virus (mjnv) was first isolated from the lung tissues of ussuri white-toothed shrew (crocidura lasiura) from south korea in 2009. we aim to detect the species and prevalence of insectivore- and rodent-borne hantaviruses in shrews and rodents. | 2017 | 28287930 |
| differences in the ectoparasite fauna between micromammals captured in natural and adjacent residential areas are better explained by sex and season than by type of habitat. | we compared the ectoparasite fauna in 608 micromammals (chiefly 472 wood mice apodemus sylvaticus, 63 algerian mice mus spretus, and 51 greater white-toothed shrews crocidura russula) captured in natural and adjacent residential areas in spring and autumn during three consecutive years in four areas in periurban barcelona (ne spain). we found little support for an association of urbanization with differences in infestation by ectoparasites. prevalence of rhipicephalus sp. tick in wood mice and s ... | 2016 | 26946133 |
| emerging infectious disease implications of invasive mammalian species: the greater white-toothed shrew (crocidura russula) is associated with a novel serovar of pathogenic leptospira in ireland. | the greater white-toothed shrew (crocidura russula) is an invasive mammalian species that was first recorded in ireland in 2007. it currently occupies an area of approximately 7,600 km2 on the island. c. russula is normally distributed in northern africa and western europe, and was previously absent from the british isles. whilst invasive species can have dramatic and rapid impacts on faunal and floral communities, they may also be carriers of pathogens facilitating disease transmission in poten ... | 2016 | 27935961 |
| screening red foxes (vulpes vulpes) for possible viral causes of encephalitis. | next to various known infectious and non-infectious causes, the aetiology of non-suppurative encephalitis in red foxes (vulpes vulpes) often remains unclear. known causes in foxes imply rabies, canine distemper, toxoplasmosis, aujeszky's disease, as well as parvovirus, adenovirus, circovirus and flavivirus infections. in this study, particular attention was paid on bornaviruses, since red foxes are predators of bicoloured white-toothed shrews, a reservoir of borna disease virus 1 (bodv-1). in ad ... | 2016 | 27590473 |
| diversity of shrews in ethiopia, with the description of two new species of <i>crocidura</i> (mammalia: lipotyphla: soricidae). | two new species of white-toothed shrews, crocidura afeworkbekelei and crocidura yaldeni, are described from southern ethiopia. comparisons are made with other species of crocidura known to occur in ethiopia. a list of 28 species of shrews known from ethiopia is provided, 10 of which (including both newly described species) are currently considered to be endemic to ethiopia. the endemic shrew fauna consists of forest and montane species known to occur within the altitudinal range of 1200-4050 m a ... | 2016 | 27988680 |
| phenotypic flexibility in the energetic strategy of the greater white-toothed shrew, crocidura russula. | the balance between energetic acquisition and expenditure depends on the amount of energy allocated to biological functions such as thermoregulation, growth, reproduction and behavior. ambient temperature has a profound effect on this balance, with species inhabiting colder climates often needing to invest more energy in thermoregulation to maintain body temperature. this leads to local behavioral and physiological adaptations that increase energetic efficiency. in this study, we investigated th ... | 2016 | 26857972 |
| prevalence and genotype allocation of pathogenic leptospira species in small mammals from various habitat types in germany. | small mammals serve as most important reservoirs for leptospira spp., the causative agents of leptospirosis, which is one of the most neglected and widespread zoonotic diseases worldwide. the knowledge about leptospira spp. occurring in small mammals from germany is scarce. thus, this study's objectives were to investigate the occurrence of leptospira spp. and the inherent sequence types in small mammals from three different study sites: a forest in southern germany (site b1); a national park in ... | 2016 | 27015596 |
| quadricuspid aortic valves in syrian hamsters and their formation according to current knowledge on valvulogenesis. | occurrence of quadricuspid aortic valves has been reported in humans, in nine dogs and in a greater white-toothed shrew. moreover, two cases of developing aortic valves with four anticipated leaflets have been described in syrian hamster embryos. currently, however, no case of quadricuspid aortic valve in adult hamsters has been recorded. the aim here is to present four adults of this rodent species, two of them with unequivocally quadricuspid aortic valves and the other two with quadricuspid-li ... | 2015 | 25854086 |
| lethal disease in infant and juvenile syrian hamsters experimentally infected with imjin virus, a newfound crocidurine shrew-borne hantavirus. | to gain insights into the pathogenicity of imjin virus (mjnv), a newfound hantavirus isolated from the ussuri white-toothed shrew (crocidura lasiura), groups of syrian hamsters (mesocricetus auratus) of varying ages (<1, 5, 10, 14, 21, 35 and 56 days) were inoculated by the intraperitoneal route with 1000 pfu of mjnv strains 04-55 and 05-11. mjnv-infected syrian hamsters, aged 21 days or less, exhibited reduced activity, weight loss, respiratory distress, hind-limb paralysis and seizures. death ... | 2015 | 26371066 |
| circannual testis changes in seasonally breeding mammals. | in the non-equatorial zones of the earth, species concentrate their reproductive effort in the more favorable season. a consequence of seasonal breeding is seasonal testis regression, which implies the depletion of the germinative epithelium, permeation of the blood-testis barrier, and reduced androgenic function. this process has been studied in a number of vertebrates, but the mechanisms controlling it are not yet well understood. apoptosis was assumed for years to be an important effector of ... | 2015 | 26375035 |
| vocal development during postnatal growth and ear morphology in a shrew that generates seismic vibrations, diplomesodon pulchellum. | the ability of adult and subadult piebald shrews (diplomesodon pulchellum) to produce 160hz seismic waves is potentially reflected in their vocal ontogeny and ear morphology. in this study, the ontogeny of call variables and body traits was examined in 11 litters of piebald shrews, in two-day intervals from birth to 22 days (subadult), and ear structure was investigated in two specimens using micro-computed tomography (micro-ct). across ages, the call fundamental frequency (f0) was stable in squ ... | 2015 | 26112702 |
| shedding of infectious borna disease virus-1 in living bicolored white-toothed shrews. | many rna viruses arise from animal reservoirs, namely bats, rodents and insectivores but mechanisms of virus maintenance and transmission still need to be addressed. the bicolored white-toothed shrew (crocidura leucodon) has recently been identified as reservoir of the neurotropic borna disease virus 1 (bodv-1). | 2015 | 26313904 |
| the bicolored white-toothed shrew crocidura leucodon (hermann 1780) is an indigenous host of mammalian borna disease virus. | borna disease (bd) is a sporadic neurologic disease of horses and sheep caused by mammalian borna disease virus (bdv). its unique epidemiological features include: limited occurrence in certain endemic regions of central europe, yearly varying disease peaks, and a seasonal pattern with higher disease frequencies in spring and a disease nadir in autumn. it is most probably not directly transmitted between horses and sheep. all these features led to the assumption that an indigenous virus reservoi ... | 2014 | 24699636 |
| factors associated with the prevalence and pathology of calodium hepaticum and c. splenaecum in periurban micromammals. | calodium hepaticum (syn. capillaria hepatica) and calodium splenaecum (syn. capillaria splenaecum) are nematodes that infect the liver and spleen, respectively, of mammals. while the host range, distribution, pathology and zoonotic potential of c. hepaticum are well known, very little is known about c. splenaecum. the observed prevalence of these two parasites, the factors associated with prevalence, and the lesions resulting in the different host species were studied in 408 micromammals capture ... | 2014 | 24879015 |
| biodiversity and evolution of imjin virus and thottapalayam virus in crocidurinae shrews in zhejiang province, china. | the recent discovery of numerous hantaviruses in insectivores has provided a new view of hantavirus biodiversity and evolution. to determine the presence and genetic diversity of imjin virus (mjnv) and thottapalayam virus (tpmv) in insectivores in zhejiang province, china, we captured and performed virus screening of 32 ussuri white-toothed shrews (crocidura lasiura) and 105 asian house shrews (suncus murinus) in different coastal regions. hantavirus genome (s, m, and l segments) sequences were ... | 2014 | 24874196 |
| responses of wild small mammals to arsenic pollution at a partially remediated mining site in southern france. | partial remediation actions at a former gold mine in southern france led to a mosaic of contaminated and rehabilitated zones. in this study, the distribution of arsenic and its potential adverse effects on small mammals were investigated. the effectiveness of remediation for reducing the transfer of this element into wildlife was also discussed. arsenic levels were measured in the soil and in the stomach contents, livers, kidneys, and lungs of four small mammal species (the wood mouse (apodemus ... | 2014 | 24239822 |
| taxonomic uncertainty and the loss of biodiversity on christmas island, indian ocean. | the taxonomic uniqueness of island populations is often uncertain which hinders effective prioritization for conservation. the christmas island shrew (crocidura attenuata trichura) is the only member of the highly speciose eutherian family soricidae recorded from australia. it is currently classified as a subspecies of the asian gray or long-tailed shrew (c. attenuata), although it was originally described as a subspecies of the southeast asian white-toothed shrew (c. fuliginosa). the christmas ... | 2014 | 24283832 |
| invading and expanding: range dynamics and ecological consequences of the greater white-toothed shrew (crocidura russula) invasion in ireland. | establishing how invasive species impact upon pre-existing species is a fundamental question in ecology and conservation biology. the greater white-toothed shrew (crocidura russula) is an invasive species in ireland that was first recorded in 2007 and which, according to initial data, may be limiting the abundance/distribution of the pygmy shrew (sorex minutus), previously ireland's only shrew species. because of these concerns, we undertook an intensive live-trapping survey (and used other data ... | 2014 | 24955824 |
| the testis of greater white-toothed shrew crocidura russula in southern european populations: a case of adaptive lack of seasonal involution? | males of all seasonal breeding mammals undergo circannual periods of testis involution resulting in almost complete ablation of the germinative epithelium. we performed a morphometric, histological, hormonal, and gene-expression study of the testes from winter and summer males of the greater white-toothed shrew, crocidura russula, in populations of the southeastern iberian peninsula. unexpectedly, we found no significant differences between the two study groups. surprisingly, female data confirm ... | 2014 | 24895181 |
| bones and genes: resolution problems in three vietnamese species of crocidura (mammalia, soricomorpha, soricidae) and the description of an additional new species. | recent investigations of southeast asian white toothed shrews belonging to the genus crocidura have revealed discrepancies between the results of morphological and molecular studies. the following study concerns three species of crocidura occurring in vietnam, namely crocidura attenuata, crocidura tanakae and crocidura wuchihensis, and an undescribed fourth species revealed by molecular analysis. for many years crocidura attenuata has been known to occur in vietnam but, until very recently, the ... | 2013 | 23840165 |
| non-contiguous finished genome sequence and description of bartonella florenciae sp. nov. | bartonella florenciae sp. nov. strain r4(t) is the type strain of b. florenciae sp. nov., a new species within the genus bartonella. this strain, whose genome is described here, was isolated in france from the spleen of the shrew crocidura russula. b. florenciae is an aerobic, rod-shaped, gram-negative bacterium. here we describe the features of this organism, together with the complete genome sequence and its annotation. the 2,010,844 bp-long genome contains 1,909 protein-coding and 46 rna gene ... | 2013 | 24501655 |
| differential behavioural and endocrine responses of common voles (microtus arvalis) to nest predators and resource competitors. | adaptive behavioural strategies promoting co-occurrence of competing species are known to result from a sympatric evolutionary past. strategies should be different for indirect resource competition (exploitation, e.g., foraging and avoidance behaviour) than for direct interspecific interference (e.g., aggression, vigilance, and nest guarding). we studied the effects of resource competition and nest predation in sympatric small mammal species using semi-fossorial voles and shrews, which prey on v ... | 2013 | 24010574 |
| chronic exposure to environmental stressors induces fluctuating asymmetry in shrews inhabiting protected mediterranean sites. | many ecotoxicological studies have addressed the effects of contaminant exposure at various levels of biological organization. however, little information exists on the effects of toxicants on wildlife populations. here we examined exposure of populations of the greater white-toothed shrew crocidura russula (soricomorpha, soricidae) occupying two protected mediterranean sites (a polluted area, the ebro delta, and a control site, garraf massif). bioaccumulation of selected elements (pb, hg, cd, z ... | 2013 | 23800592 |
| does shape co-variation between the skull and the mandible have functional consequences? a 3d approach for a 3d problem. | morpho-functional patterns are important drivers of phenotypic diversity given their importance in a fitness-related context. although modularity of the mandible and skull has been studied extensively in mammals, few studies have explored shape co-variation between these two structures. despite being developmentally independent, the skull and mandible form a functionally integrated unit. in the present paper we use 3d surface geometric morphometric methods allowing us to explore the form of both ... | 2013 | 23964811 |
| is there a significant gas exchange through the skin of the shrew crocidura russula monacha? | because of its small body mass, the shrew crocidura russula monacha has a relatively high surface area to volume ratio, thin skin, and high thermal conductance compared with larger mammals. this study was aimed at examining the possibility that such a mammal may exhibit a significant skin gas exchange. gas composition was measured in subcutaneous gas pockets. co2 and o2 exchange through skin were measured both in vitro and in vivo. in 7-wk-old gas pockets, the steady-state po2 and pco2 values we ... | 2013 | 9678501 |
| bicolored white-toothed shrews as reservoir for borna disease virus, bavaria, germany. | 2013 | 24274262 | |
| complete mitochondrial genome of an asian lesser white-toothed shrew, crocidura shantungensis (soricidae). | the complete mitochondrial genome was sequenced and annotated newly from an individual of crocidura shantungensis (soricidae) from korea. the total length of the c. shantungensis genome is 17,160 bp, with a base composition of 32.5% a, 32.7% t, 21.6% c, and 13.1% g. | 2012 | 23688267 |
| divergent ancestral lineages of newfound hantaviruses harbored by phylogenetically related crocidurine shrew species in korea. | spurred by the recent isolation of a novel hantavirus, named imjin virus (mjnv), from the ussuri white-toothed shrew (crocidura lasiura), targeted trapping was conducted for the phylogenetically related asian lesser white-toothed shrew (crocidura shantungensis). pair-wise alignment and comparison of the s, m and l segments of a newfound hantavirus, designated jeju virus (jjuv), indicated remarkably low nucleotide and amino acid sequence similarity with mjnv. phylogenetic analyses, using maximum ... | 2012 | 22230701 |
| [cellular aspects of aging in the pineal gland of the shrew, crocidura russula]. | the greater white-toothed shrew crocidura russula is short-lived species and the phase of senescence is greatly elongated in captivity. the loss of rhythmicity of biological functions that accompanies its aging is also well documented. c. russula is thus an excellent model to test the effects of aging on biological clocks. melatonin is a key hormone in the synchronization of behaviors, metabolisms and physiological regulations with environmental factors. in the present work we want to know if th ... | 2012 | 22226159 |
| white-toothed shrews (mammalia, soricomorpha, crocidura) of coastal islands of vietnam. | new findings of the white-toothed shrews (crocidura spp.) from offshore islands of vietnam are reported. the species identifications have been confirmed by the analysis of complete mitochondrial cytochrome b gene (1140 bp). crocidura phuquocensis is the only species found in the phu quoc island. crocidura fuliginosa has been recorded from two islands of the con dao archipelago (con son and bai canh). the occurrence of crocidura fuliginosa in vietnam has been genetically confirmed for the first t ... | 2012 | 22855639 |
| spatially explicit analysis of metal transfer to biota: influence of soil contamination and landscape. | concepts and developments for a new field in ecotoxicology, referred to as "landscape ecotoxicology," were proposed in the 1990s; however, to date, few studies have been developed in this emergent field. in fact, there is a strong interest in developing this area, both for renewing the concepts and tools used in ecotoxicology as well as for responding to practical issues, such as risk assessment. the aim of this study was to investigate the spatial heterogeneity of metal bioaccumulation in anima ... | 2011 | 21655187 |
| genetic diversity of imjin virus in the ussuri white-toothed shrew (crocidura lasiura) in the republic of korea, 2004-2010. | recently, imjin virus (mjnv), a genetically distinct hantavirus, was isolated from lung tissues of the ussuri white-toothed shrew (crocidura lasiura) captured near the demilitarized zone in the republic of korea. to clarify the genetic diversity of mjnv, partial m- and l-segment sequences were amplified from lung tissues of 12 of 37 (32.4%) anti-mjnv igg antibody-positive ussuri white-toothed shrews captured between 2004 and 2010. a 531-nucleotide region of the m segment (coordinates 2,255 to 2, ... | 2011 | 21303516 |
| xenoma-like formations induced by soricimyxum fegati (myxosporea) in three species of shrews (soricomorpha: soricidae), including records of new hosts. | in south bohemia, czech republic, 178 shrews, including 98 common shrews, sorex araneus l., 70 pygmy shrews, sorex minutus l., and 10 lesser white-toothed shrews, crocidura suaveolens (pallas), were examined for soricimyxum fegati prunescu, prunescu, pucek et lom, 2007 infections, using squash preparations of unfixed tissues, histological sections and molecular methods. the infection was found in 51 (52%) s. araneus, 14 (20%) s. minutus and 1 (10%) c. suaveolens. the records of the latter two sp ... | 2011 | 22263306 |
| normal and aberrant mesocestoides tetrathyridia from crocidura spp. (soricimorpha) in corsica and spain. | abstract tetrathyridia of mesocestoides sp. were collected from the body cavities of the shrews (soricimorpha), crocidura russula in valencia, spain, and crocidura suaveolens on the mediterranean island of corsica, france. specimens were processed by routine microscopical and histological techniques, including examination with brightfield, phase-contrast, and differential-interference-contrast optics. most tetrathyridia occurred both clustered together inside host-derived fibrotic capsules, but ... | 2011 | 21612421 |
| molecular evolution of azagny virus, a newfound hantavirus harbored by the west african pygmy shrew (crocidura obscurior) in cote d'ivoire. | abstract: background: tanganya virus (tgnv), the only shrew-associated hantavirus reported to date from sub-saharan africa, is harbored by the therese's shrew (crocidura theresae), and is phylogenetically distinct from thottapalayam virus (tpmv) in the asian house shrew (suncus murinus) and imjin virus (mjnv) in the ussuri white-toothed shrew (crocidura lasiura). the existence of myriad soricid-borne hantaviruses in eurasia and north america would predict the presence of additional hantaviruses ... | 2011 | 21798050 |
| neospora caninum and toxoplasma gondii in brain tissue of feral rodents and insectivores caught on farms in the netherlands. | we investigated the presence of both neospora caninum and toxoplasma gondii in 250 brain tissue samples from 9 species of feral rodents and insectivores caught on 10 organic farms in the netherlands in 2004. collected samples were conserved in 4% paraformaldehyde solution and analysed by real-time pcr. for n. caninum, 31 samples originating from 6 species tested positive (12.4%): common shrews (33.3%), wood mice (17.6%), harvest mice (16.7%), house mice (15.4%), white-toothed shrews (10.8%) and ... | 2011 | 21958437 |
| distribution of borna disease virus antigen and rna in tissues of naturally infected bicolored white-toothed shrews, crocidura leucodon, supporting their role as reservoir host species. | borna disease is a severe viral-induced disorder of the central nervous system of horses, sheep, and a few other animal species, occurring in certain areas of central europe. pathogenesis and epidemiology of natural borna disease virus (bdv) infections are still not fully understood; several unique epidemiologic features, however, point toward the existence of bdv reservoir populations other than the final hosts. in this study, 69 mice and 12 shrews were trapped and examined. the virus distribut ... | 2010 | 20133953 |
| characterization of a novel wood mouse virus related to murid herpesvirus 4. | two novel gammaherpesviruses were isolated, one from a field vole (microtus agrestis) and the other from wood mice (apodemus sylvaticus). the genome of the latter, designated wood mouse herpesvirus (wmhv), was completely sequenced. wmhv had the same genome structure and predicted gene content as murid herpesvirus 4 (muhv4; murine gammaherpesvirus 68). overall nucleotide sequence identity between wmhv and muhv4 was 85 % and most of the 10 kb region at the left end of the unique region was particu ... | 2010 | 19940063 |
| cornea, retina, and lens morphology in five soricidae species (soricomorpha: mammalia). | we analyzed the cornea, retina, and lens of five species of soricidae (pygmy shrew, sorex minutus; common shrew, sorex araneus; millet's shrew, sorex coronatus; water shrew, neomys fodiens; greater white-toothed shrew, crocidura russula) by light and electron microscopy. in all of these species, the corneal epithelium showed a dead cell layer, which may increase the refractive power of the cornea, thereby reducing the hypermetropy that would be expected in a small eye. moreover, the anterior sur ... | 2009 | 19367448 |
| ectoparasites (sucking lice, fleas and ticks) of small mammals in southeastern kenya. | during 1998-2000, at least 14 species (n = 309) of small mammals were live-trapped and examined for ectoparasites in moist forests of the taita and shimba hills and drier savannah habitats of nguruman, southeastern kenya. ectoparasites were recorded from 11 species of mammals. five species of sucking lice [hoplopleura inexpectans johnson, h. intermedia kellogg & ferris, polyplax reclinata (nitzsch), p. waterstoni bedford and schizophthirus graphiuri ferris], six species of fleas (ctenophthalmus ... | 2009 | 19941604 |
| characterization of imjin virus, a newly isolated hantavirus from the ussuri white-toothed shrew (crocidura lasiura). | until recently, the single known exception to the rodent-hantavirus association was thottapalayam virus (tpmv), a long-unclassified virus isolated from the asian house shrew (suncus murinus). robust gene amplification techniques have now uncovered several genetically distinct hantaviruses from shrews in widely separated geographic regions. here, we report the characterization of a newly identified hantavirus, designated imjin virus (mjnv), isolated from the lung tissues of ussuri white-toothed s ... | 2009 | 19357167 |
| metal and metalloid accumulation in shrews (soricomorpha, mammalia) from two protected mediterranean coastal sites. | although ecotoxicological data on heavy metals are abundant, information on other potentially toxic elements with attributed deficiency and/or toxic disturbances is scarce. here we quantify zinc, copper, iron, manganese, chromium, molybdenum, strontium, barium, and boron in bones of greater white-toothed shrews, crocidura russula, inhabiting two protected mediterranean coastal sites: the ebro delta, a wetland impacted by human activities, and the medas islands, a reference site. natural and anth ... | 2009 | 19144455 |
| echinostome infections in the striped-field mouse, apodemus agrarius, and the ussuri white-toothed shrew, crocidura lasiura, caught near the demilitarized zone, gyeonggi-do (province), republic of korea. | a total of 1,498 small mammals (rodents and insectivores), including apodemus agrarius (n = 1,366), crocidura lasiura (54), mus musculus (32), micronytus fortis (28), eothenomys regulus (9), micronys minutes (6), and cricetulus triton (3), were live-trapped in gyeonggi-do (province) (paju-si, pocheon-gun, and yeoncheon-gun) near the demilitarized zone (dmz) from december 2004 to september 2005. a. agrarius was found to be infected with 3 species of echinostomes (echinostoma hortense, echinostoma ... | 2009 | 19724709 |
| metals in liver and kidneys and the effects of chronic exposure to pyrite mine pollution in the shrew crocidura russula inhabiting the protected wetland of doñana. | historically impacted by anthropogenic activities, the nature reserve of doñana (sw spain) was affected by an unprecedented spillage of mud and acidic water from the aznalcóllar pyrite mine in april 1998. although several studies have addressed the influence of this spill on soils, water, and biota, there is little information on mammals, especially carnivorous species. we measured the concentrations of fe, mg, pb, hg, cd, zn, cu, mn, mo, co, and cr in specimens of the greater white-toothed shre ... | 2009 | 19394996 |
| bioaccumulation of metals and effects of a landfill in small mammals part iii: structural alterations. | the leachates from the garraf landfill located in a protected site (ne spain) contain several potentially toxic substances such as heavy metals. here we report the histopathological alterations produced by this pollution in wild specimens of an omnivorous species, the wood mouse, apodemus sylvaticus, and an insectivorous species, the greater white-toothed shrew, crocidura russula. hepatic tissue presented the most severe alterations in both the species, namely cell cycle arrest (apoptosis and ne ... | 2009 | 19758588 |
| the timing of the shrew: continuous melatonin treatment maintains youthful rhythmic activity in aging crocidura russula. | laboratory conditions nullify the extrinsic factors that determine the wild expected lifespan and release the intrinsic or potential lifespan. thus, wild animals reared in a laboratory often show an increased lifespan, and consequently an increased senescence phase. senescence is associated with a broad suite of physiological changes, including a decreased responsiveness of the circadian system. the time-keeping hormone melatonin, an important chemical player in this system, is suspected to have ... | 2009 | 19526053 |
| kestrel-prey dynamic in a mediterranean region: the effect of generalist predation and climatic factors. | most hypotheses on population limitation of small mammals and their predators come from studies carried out in northern latitudes, mainly in boreal ecosystems. in such regions, many predators specialize on voles and predator-prey systems are simpler compared to southern ecosystems where predator communities are made up mostly of generalists and predator-prey systems are more complex. determining food limitation in generalist predators is difficult due to their capacity to switch to alternative p ... | 2009 | 19234618 |
| inferring recent migration rates from individual genotypes. | we present a novel and straightforward method for estimating recent migration rates between discrete populations using multilocus genotype data. the approach builds upon a two-step sampling design, where individual genotypes are sampled before and after dispersal. we develop a model that estimates all pairwise backwards migration rates (m(ij), the probability that an individual sampled in population i is a migrant from population j) between a set of populations. the method is validated with simu ... | 2009 | 19222755 |
| [epizootic significance of white-toothed shrews in the natural focus of steppe type tularemia in the stavropol' region]. | the observations indicate that anthropogenic activities cause structural changes with time among tularemia pathogen carriers in the microfocus. the epizootic and epidemic values of animal species, such as dwarf hamsters and house mice, decrease while those of insect-eating animals, namely white-toothed shrews that refer to group ii increase, in terms of tularemia infection susceptibility. in white-toothed shrews, tularemia infection rates are 4-6-times greater than those in other small mammals t ... | 2009 | 11702461 |
| photoreceptor types and distributions in the retinae of insectivores. | the retinae of insectivores have been rarely studied, and their photoreceptor arrangements and expression patterns of visual pigments are largely unknown. we have determined the presence and distribution of cones in three species of shrews (common shrew sorex araneus, greater white-toothed shrew crocidura russula, dark forest shrew crocidura poensis; soricidae) and in the lesser hedgehog tenrec echinops telfairi (tenrecidae). special cone types were identified and quantified in flattened whole r ... | 2008 | 11193110 |
| habitat-quality effects on metapopulation dynamics in greater white-toothed shrews, crocidura russula. | the effects of patch size and isolation on metapopulation dynamics have received wide empirical support and theoretical formalization. by contrast, the effects of patch quality seem largely underinvestigated, partly due to technical difficulties in properly assessing quality. here we combine habitat-quality modeling with four years of demographic monitoring in a metapopulation of greater white-toothed shrews (crocidura russula) to investigate the role of patch quality on metapopulation processes ... | 2008 | 18959315 |
| haematology, genotoxicity, enzymatic activity and histopathology as biomarkers of metal pollution in the shrew crocidura russula. | haematological (wbc, rbc, hgb and hct) and genotoxicity (mnt) parameters, hepatic enzymatic activities (gst, gpx and gr), and a histopathological evaluation of liver, kidneys and gonads were assessed as general biomarkers of metal pollution in the shrew crocidura russula inhabiting a pyrite mining area. specimens exposed to metals presented a few significant alterations when compared with reference animals: gst activity decreased; micronuclei increased; and evident liver alterations related to m ... | 2008 | 18448220 |
| histological description of seminiferous epithelium and cycle length of spermatogenesis in the water shrew neomys fodiens (mammalia: soricidae). | recently, we examined the spermatogenesis cycle length in two shrews species, sorex araneus characterized by a very high metabolic rate and a polyandric mating system (sperm competition) resulting in a short cycle and crocidura russula characterized by a much lower metabolic rate and a monogamous mating system showing a longer cycle. in this study, we investigated the spermatogenesis cycle in neomys fodiens showing an intermediate metabolic rate. we described the stages of seminiferous epitheliu ... | 2008 | 17629637 |
| mass effects mediate coexistence in competing shrews. | recent developments in metacommunity theory have raised awareness that processes occurring at regional scales might interfere with local dynamics and affect conditions for the local coexistence of competing species. four main paradigms are recognized in this context (namely, neutral, patch-dynamics, species-sorting, and mass-effect), which differ according to the role assigned to ecological or life-history differences among competing species, as well as to the relative time scale of regional vs. ... | 2008 | 18705388 |
| evaluation of some sources of variability in using small mammals as pollution biomonitors. | in the present study the effects of gender, age and nutritional status on tissue concentrations of some trace elements (zn, cu, mn, and cr) in wood mouse (apodemus sylvaticus), spanish shrew (sorex granarius), and great white-toothed shrew (crocidura russula) were investigated. four sampling stations were selected for the study: a restored mine dump, an area characterised by ultrabasic soil and two sites in oak woods in the vicinity of a power plant. gender had no effect on the tissue concentrat ... | 2008 | 18313721 |
| relationships of basal metabolic rate, relative testis size and cycle length of spermatogenesis in shrews (mammalia, soricidae). | the aim of the present study was to determinate the cycle length of spermatogenesis in three species of shrew, suncus murinus, sorex coronatus and sorex minutus, and to assess the relative influence of variation in basal metabolic rate (bmr) and mating system (level of sperm competition) on the observed rate of spermatogenesis, including data of shrew species studied before (sorex araneus, crocidura russula and neomys fodiens). the dynamics of sperm production were determined by tracing 5-bromod ... | 2008 | 18402763 |
| the role of rodents and shrews in the transmission of toxoplasma gondii to pigs. | inadequate rodent control is considered to play a role in toxoplasma gondii infection of pigs. this issue was addressed in the current study by combining a 4-month rodent control campaign and a 7-month longitudinal analysis of t. gondii seroprevalence in slaughter pigs. three organic pig farms with known rodent infestation were included in the study. on these farms, presence of t. gondii in trapped rodents was evaluated by real-time pcr. all rodent species and shrews investigated had t. gondii d ... | 2008 | 18606498 |
| lawsonia intracellularis in rodents from pig farms with the occurrence of porcine proliferative enteropathy. | lawsonia intracellularis is an obligate intracellular bacterium causing proliferative enteropathy in certain species of domestic, laboratory and captive animals. the aim of our study was to detect l. intracellularis in free-living rodents from pig farms in the czech republic. | 2008 | 18673433 |
| [localization of larvae of neotrombicula (n) monticola (trombiculidae) ticks on the vertebrates]. | the specific features of distribution of neotrombicula (n) monticola schluger et davidov, 1967 on small mammals were studied in the tien shan montains (kirghiz ridge). n. (n ) monticola was found to occur in all the places under study. nine species of mammals (pigmy white-toothed shrew, dwarf hamster, tamarisk gerbil, turkestan rat, long-tailed mouse, tien shan, kirghiz, and silver voles, and wood mouse) were established to be feeders of larvae of the ticks. n. (n) monticola larvae were detected ... | 2007 | 17912838 |
| tissue, age, and sex distribution of thallium in shrews from doñana, a protected area in sw spain. | in 1998, the protected area of doñana, an important natural region in sw europe, was affected with great amount of acidic waters and sludge from a pyrite mine loaded with toxic metals such as thallium (tl). since this ecological catastrophe, several studies have addressed the effects of this pollution on the flora and fauna in this protected area. however, in contrast to other non-essential metals, scarce information on tl was available after this disaster, especially in terrestrial environments ... | 2007 | 17570462 |
| bioaccumulation of lead, mercury, and cadmium in the greater white-toothed shrew, crocidura russula, from the ebro delta (ne spain): sex- and age-dependent variation. | we quantified bioaccumulation of lead, mercury, and cadmium in bones from 105 greater white-toothed shrews (crocidura russula) collected at the ebro delta, a polluted area, and the medas islands, a control site. lead and mercury levels varied with site, age, and sex, although statistical significances depended on each factor. globally, shrews from the polluted area exhibited significantly higher concentrations of pb and hg. increment of pb with age was particularly remarkable in wetland animals ... | 2007 | 16777291 |
| the electrocardiogram of european shrews. | a recording method of electrocardiograms in resting animals is described. the electrocardiograms of crocidura russula, crocidura leucodon, crocidura suaveolens, neomys fodiens and sorex araneus are similar to those of other small mammals. t-wave directly follows the qrs-complex. the duration of electrocardiograms depends on heart mass and body temperature. heart rate shows no influence on the duration of electrocardiograms. | 2007 | 2870871 |
| heavy-metal concentrations in small mammals from a diffusely polluted floodplain: importance of species- and location-specific characteristics. | the soil of several floodplain areas along large european rivers shows increased levels of heavy metals as a relict from past sedimentation of contaminants. these levels may pose risks of accumulation in food webs and toxicologic effects on flora and fauna. however, for floodplains, data on heavy-metal concentrations in vertebrates are scarce. moreover, these environments are characterised by periodical flooding cycles influencing ecologic processes and patterns. to investigate whether the sugge ... | 2007 | 17387425 |
| tick-borne zoonotic bacteria in wild and domestic small mammals in northern spain. | the prevalence and diversity of tick-borne zoonotic bacteria (borrelia spp., anaplasma phagocytophilum, coxiella burnetii, and spotted fever group rickettsiae) infecting 253 small mammals captured in the basque country (spain) were assessed using pcr and reverse line blot hybridization. trapping sites were selected around sheep farms (study 1, 2000 to 2002) and recreational parks (study 2, 2003 to 2005). the majority of the studied mammals (162) were wood mice (apodemus sylvaticus), but six othe ... | 2007 | 17693556 |
| bioaccumulation of metals and effects of landfill pollution in small mammals. part i. the greater white-toothed shrew, crocidura russula. | here we quantified the bioaccumulation of metals (lead, mercury, cadmium, iron, magnesium, zinc, copper, manganese, molybdenum, and chromium) and assessed several morphological (ri, relative weights) and genotoxic parameters as biomarkers of pollution from the landfill of garraf (barcelona, ne spain). specimens of crocidura russula (insectivora, mammalia) from the landfill site showed increased pb, cd, mg, zn, cu, and cr concentrations in their tissues. levels of mercury were below detection lim ... | 2007 | 17367842 |
| cycle length of spermatogenesis in shrews (mammalia: soricidae) with high and low metabolic rates and different mating systems. | the aim of the present study was to establish and compare the durations of the seminiferous epithelium cycles of the common shrew sorex araneus, which is characterized by a high metabolic rate and multiple paternity, and the greater white-toothed shrew crocidura russula, which is characterized by a low metabolic rate and a monogamous mating system. twelve s. araneus males and fifteen c. russula males were injected intraperitoneally with 5-bromodeoxyuridine, and the testes were collected. for cyc ... | 2007 | 17267697 |
| metal bioaccumulation in the greater white-toothed shrew, crocidura russula, inhabiting an abandoned pyrite mine site. | hepatic and renal concentrations of iron, magnesium, zinc, lead, copper, manganese, mercury, cadmium, molybdenum, chromium, and nickel were quantified in shrews (crocidura russula) inhabiting a pyrite mine site in portugal. several morphological parameters (body weight, residual index, and relative weights) were also examined to clarify the physiological effects of pollution. shrews from the mine showed increased bioavailability of fe, pb, hg, cd, mo, and ni in comparison with reference specimen ... | 2007 | 17107703 |
| how does the greater white-toothed shrew, crocidura russula, responds to long-term heavy metal contamination? -- a case study. | heavy metals accumulation in parallel with the evaluation of physiological and biochemical effects resulting from continued metal exposure were considered here using for the first time the great white-toothed shrew crocidura russula as an in vivo model. shrews were originated from an abandoned lead/zinc mining area and from a reference area, both in alentejo, southern portugal. hepatic contents of nickel, copper, zinc, cadmium, mercury and lead were quantified by inductively coupled plasma mass ... | 2007 | 17321569 |
| a novel set of microsatellite marker loci linkage-mapped in the house musk shrew, suncus murinus. | ten microsatellite dna loci developed for the white-toothed shrew (crocidura russula) were tested for pcr amplification and for utility in linkage studies in the house musk shrew, suncus murinus. four primer pairs successfully yielded pcr amplicons and showed polymorphism between two mutant strains, ban-kc,oeb and wz. cloning and sequencing of the pcr amplicons of all the four loci confirmed the presence of microsatellite sequences. alleles segregating in an f2 resource population constructed fr ... | 2007 | 17283891 |
| mediterranean populations of the lesser white-toothed shrew (crocidura suaveolens group): an unexpected puzzle of pleistocene survivors and prehistoric introductions. | an earlier study revealed the strong phylogeographical structure of the lesser white-toothed shrew (crocidura suaveolens group) within the northern palaearctic. here, we aim to reconstruct the colonization history of mediterranean islands and to clarify the biogeography and phylogeographical relationships of the poorly documented middle east region with the northern palaearctic. we performed analyses on 998-bp-long haplotypes of the mitochondrial cytochrome b gene of 143 samples collected around ... | 2007 | 17688544 |
| comparative fine structure of the epididymal spermatozoa from three korean shrews with considerations on their phylogenetic relationships. | this study examined the fine structures of epididymal spermatozoa on the lesser white-toothed shrew (crocidura suaveolens), the japanese white-toothed shrew (c. dsinezumi) and the big white-toothed shrew (c. lasiura) belonging to the subfamily crocidurinae living in korea. in the spermatozoa of c. suaveolens, the head has a large acrosome, a smooth inner acrosomal membrane and a wavy, finger-like, electron-dense apical body. the neck has a solid proximal centriole that is filled with electron-de ... | 2006 | 16972552 |
| rate of metabolism during lactation in small terrestrial mammals (crocidura russula, mus domesticus and microtus arvalis). | basal rate of metabolism (bmr) and resting maternal rate of metabolism around peak lactation (rmr(l)) were measured in crocidura russula, mus domesticus and microtus arvalis. these species have a moderate or high bmr relative to the scaling relationship of kleiber. one goal of the study was to check whether females of these species show elevated rates of metabolism during lactation. a second goal was to test for a possible intraspecific correlation between the level of bmr and the change in rate ... | 2006 | 16630734 |
| disentangling reasons for low y chromosome variation in the greater white-toothed shrew (crocidura russula). | y chromosome variation is determined by several confounding factors including mutation rate, effective population size, demography, and selection. disentangling these factors is essential to better understand the evolutionary properties of the y chromosome. we analyzed genetic variation on the y chromosome, x chromosome, and mtdna of the greater white-toothed shrew, a species with low variance in male reproductive success and limited sex-biased dispersal, which enables us to control to some exte ... | 2006 | 16582448 |
| life cycle and description of a new species of brachylaimid (trematoda: digenea) in spain. | the life cycle of brachylaima llobregatensis n. sp. (trematoda: brachylaimidae) is elucidated. embryonated, operculated, asymmetric eggs (30.9 x 18.2 microm) are eliminated with feces of natural hosts wood mouse mus spretus; white-toothed shrew, crocidura russula; and an experimental host, domestic mouse, mus musculus var. domesticus. the eggs are ingested by the helicid gastropod helix (cornu) aspersa, the only natural and experimental first intermediate host. the miracidium hatches from the eg ... | 2006 | 17304812 |
| shrews as reservoir hosts of borna disease virus. | borna disease virus (bdv) is the causative agent of severe t-cell-mediated meningoencephalitis in horses, sheep, and other animal species in central europe. here we report the first unequivocal detection of a bdv reservoir species, the bicolored white-toothed shrew, crocidura leucodon, in an area in switzerland with endemic borna disease. | 2006 | 16704819 |
| pliocene and pleistocene diversification and multiple refugia in a eurasian shrew (crocidura suaveolens group). | we sequenced 998 base pairs (bp) of mitochondrial dna cytochrome b and 799 bp of nuclear gene brca1 in the lesser white-toothed shrew (crocidura suaveolens group) over its geographic range from portugal to japan. the aims of the study were to identify the main clades within the group and respective refugia resulting from pleistocene glaciations. analyses revealed the asian lesser white-toothed shrew (c. shantungensis) as the basal clade, followed by a major branch of c. suaveolens, subdivided se ... | 2006 | 16426868 |
| sex-specific selective pressures on body mass in the greater white-toothed shrew, crocidura russula. | the direction, intensity and shape of viability-, sexual- and fecundity selection on body mass were investigated in a natural population of the greater white-toothed shrew (crocidura russula), combining parentage assignment through molecular techniques and mark-recapture data over several generations. a highly significant stabilizing viability selection was found in both sexes, presumably stemming from the constraints imposed by their insectivorous habits and high metabolic costs. sexual selecti ... | 2005 | 15715835 |
| nonshivering thermogenesis capacity associated to mitochondrial dna haplotypes and gender in the greater white-toothed shrew, crocidura russula. | a selection gradient was recently suggested as one possible cause for a clinal distribution of mitochondrial dna (mtdna) haplotypes along an altitudinal transect in the greater white-toothed shrew, crocidura russula (ehinger et al. 2002). one mtdna haplotype (h1) rare in lowland, became widespread when approaching the altitudinal margin of the distribution. as h1 differs from the main lowland haplotype by several nonsynonymous mutations (including on atp6), and as mitochondria play a crucial rol ... | 2005 | 15660955 |
| energy expenditure in crocidurinae shrews (insectivora): is metabolism a key component of the insular syndrome? | a cascade of morphological, ecological, demographical and behavioural changes operates within island communities compared to mainland. we tested whether metabolic rates change on islands. using a closed circuit respirometer, we investigated resting metabolic rate (rmr) of three species of crocidurinae shrews: suncus etruscus, crocidura russula, and c. suaveolens. for the latter, we compared energy expenditure of mainland and island populations. our measurements agree with those previously report ... | 2005 | 16154371 |