| [the existence in europe of four groups of mice (genus mus l.) of species and subspecies rank, demonstrated by biochemical genetics]. | analysis at 20 genetic loci by starch gel electrophoresis of a population from greece shows that contrary to most accepted views, the outdoor eastern mediterranean short-tailed mouse (i) does not belong to the same species as the house mouse (mus musculus), (ii) is not less distant from the eastern european semi-species of house mouse (biochemical group 2) than from the western and mediterranean european semi-species (group 1), and (iii) is not more closely related to the outdoor western mediter ... | 1978 | 103641 |
| [2 new esterase loci es-14 and es-15 in mice (genus muc l.) : characterization by different substrates and inhibitors]. | allelic differences at an esterase locus designated es-14 exist between mus musculus (both inbred strains and wild mice) and mus spretus. this locus is expressed in a variety of tissues. mus musculus has been assigned the allele es-14r while mus spretus carries the alternate alleles es-14l. each phenotype manifests itself as a single band of enzyme activity and f1 hybrids show two bands corresponding to the parental forms. allozyme variation was also detected at another esterase locus, temporari ... | 1979 | 115606 |
| analysis of high complement levels in mus hortulanus and bub mice. | bub/bnj mice were previously identified as having exceptionally potent complement activity, relative to common mouse strains, in the lysis of antibody-coated human tumor cells. we describe herein our investigation into the molecular and genetic basis for this difference between mouse strains, and also our results with wild mice and mouse strains recently derived from the wild, to determine whether low complement levels are characteristic of wild mice. bub complement was compared with complement ... | 1992 | 1401942 |
| genetic variation in mouse apolipoprotein a-iv due to insertion and deletion in a region of tandem repeats. | we have detected three unique apolipoprotein a-iv (apoa-iv) charge isoforms in strains of commensal mice. the cdna sequences for one representative of each isoform (mus domestesticus strains c57bl/6j and 129/j and mus castaneus) revealed a polymorphism within a series of four imperfect repeats encoding the sequence glu-gln-ala/val-gln. insertions or deletions of 12 nucleotides within this repetitive region have given rise to three genotypes characterized by three (129), four (c57bl/6), or five ( ... | 1991 | 1648102 |
| recent evolutionary origin of the expression of the glial fibrillary acidic protein (gfap) in lens epithelial cells. a molecular and genetic analysis of various mouse species. | we have investigated the phylogenetic distribution of the glial fibrillary acidic protein (gfap) in lens epithelial cells (lec) of various mouse species within the genus mus. we have shown that lens gfap is expressed in mice of the mus musculus complex and in mus spicilegus and mus macedonicus species (l.gfap(+) phenotype) while it is absent in mus spretus, mus caroli and mus cooki species (l.gfap(-) phenotype). our results argue in favour of one of the phenograms illustrating the probable phylo ... | 1991 | 1712888 |
| dominant expression of a distinctive v14+ t-cell antigen receptor alpha chain in mice. | a distinctive variable region 14-positive (v14+) alpha chain (v alpha 14+) of the t-cell antigen receptor is predominantly expressed in multiple mouse subspecies. the v alpha 14 family has two members, v alpha 14.1 and v alpha 14.2, which differ by only three amino acids at positions 50-52. based on the ecori restriction fragment length polymorphism of the gene encoding v alpha 14, mice can be divided into three groups: type i with an 11.2-kilobase (kb) fragment, type ii with a 2.0-kb fragment, ... | 1991 | 1881891 |
| cytogenetic and biochemical comparison of mus musculus and mus hortulanus. | two chromosome markers of mus hortulanus are described: a dotted y chromosome exceeding half of the length of autosome 19, and the 'domesticus' type of c-banding in the x chromosome. in mus musculus from distant regions of the ussr (more than 200 specimens of various subspecies), the y chromosome is equal to autosome 19, and the x chromosome is of the 'molossinus' type. specific biochemical characteristics of house mice of the ussr are shown. | 1990 | 2226722 |
| genetic differences in the histochemically defined structure of oligosaccharides in mice. | a wide range of tissues from three interfertile species of mice and an interspecific hybrid was examined with lectins conjugated to peroxidase to localize specifically glycoconjugates containing terminal alpha-n-acetylgalactosamine, alpha-galactose, and alpha-fucose, and the terminal disaccharide galactose-(beta 1----3)-n-acetylgalactosamine. this battery of lectins disclosed marked heterogeneity of glycoconjugates in different histological sites in a given animal and even between cells in a pre ... | 1987 | 2443557 |
| serological survey of complement factor h in common laboratory and wild mice: a new third allotype. | antigenic specificities of complement factor h from mice were studied serologically. in addition to previously reported allotypes, referred to as h.1 and h.2, a new allotype of complement factor h, h.3, was identified in the bfm/2ms strain derived from european wild mice. using three different alloantisera raised against the various mouse factor h allotype, a serological survey of the common laboratory strains and wild-derived strains of mus musculus and its relatives, mus spretus, mus spretoide ... | 1989 | 2522412 |
| y chromosome evolution in the subgenus mus (genus mus). | a 305 base pair dna sequence isolated from the y chromosome of the inbred mouse strain c57bl/10 was used to investigate the pattern and tempo of evolution of y chromosome dna sequences for five species in the subgenus mus, including mus spretus, mus hortulanus, mus abbotti, mus musculus and mus domesticus. variation in hybridization patterns between species was characterized by differences in fragment lengths of both intensely and faintly hybridizing fragments, whereas variation in hybridization ... | 1989 | 2543607 |
| nucleotide sequence and mode of transmission of the wild mouse ecotropic virus, homulv. | homulv is an nb-tropic wild mouse leukemia virus (mulv) with ecotropic host range which induces lymphoma, erythroleukemia, and myelogenous leukemia in nih swiss mice. although homulv uses the same cell surface receptor as other ecotropic mulvs, hybridization studies suggested that the homulv envelope glycoprotein differs from that of other ecotropic mulvs. we have now molecularly cloned homulv and sequenced its ltr, gag, and env regions. homulv differs markedly from other mulvs in the ltr u3 reg ... | 1989 | 2554579 |
| molecular genetics of androgen-inducible rp2 gene transcription in the mouse kidney. | androgen control of the rp2 gene in the mouse kidney has been modified during evolution. in inbred mice (mus domesticus), the concentrations of mrnas encoded by rp2 undergo a 10- to 12-fold induction in response to testosterone; in other mus species (e.g., mus hortulanus and mus caroli), induction ranges from none to about two- to fourfold. in this communication, we show that androgens induced rp2 transcription in m. domesticus, although this induction may not have fully accounted for the increa ... | 1989 | 2710112 |
| a repeated segment on the mouse y chromosome is composed of retroviral-related, y-enriched and y-specific sequences. | we report the isolation and characterization of two recombinant clones containing dna derived from the y chromosome of the c57bl/10 inbred mouse strain. both clones were isolated from a lambda phage library derived from a partial ecori digest of c57bl/10 male dna using the murine retrovirus m720. characterization of these clones showed they were derived from a repeated segment present on the c57bl/10j y chromosome that contains sequences found elsewhere in the genome. in addition, one clone cont ... | 1989 | 2731728 |
| differential methylation of the ornithine carbamoyl transferase gene on active and inactive mouse x chromosomes. | ornithine carbamoyl transferase (oct) is an x-linked gene which exhibits tissue-specific expression. to determine whether methylation of specific cpg sequences plays a role in dosage compensation or tissue-specific expression of the gene, 13 potentially methylatable sites were identified over a 30-kilobase (kb) region spanning from approximately 15 kb upstream to beyond exon ii. fragments of the mus hortulanus oct gene were used as probes to establish the degree of methylation at each site. by c ... | 1987 | 2828919 |
| homulv: a novel pathogenic ecotropic virus isolated from the european mouse, mus hortulanus. | we isolated a novel infectious murine leukemia virus (homulv) from the wild mouse mus hortulanus. homulv has an ecotropic virus host range, but the viral dna fails to hybridize to viral envelope segments specific for the known inbred and wild mouse ecotropic as well as nonecotropic mulvs. despite this difference in its env gene, homulv appears to use the same ecotropic cell-surface receptor since it infects only hamster and mouse somatic cell hybrids which contain the rec-1 ecotropic virus recep ... | 1988 | 2841796 |
| serological survey of t-lymphocyte differentiation antigens in wild mice. | allelic distributions of thy-1, ly-1, and ly-2 antigens in wild mice are characteristic of each mus musculus subspecies. eastern mice (m.m.molossinus, m.m.musculus, m.m.castaneus, m.m.bactrianus) express the thy-1.1 antigen, whereas western mice (m.m.domesticus, m.m.brevirostris) express the thy-1.2. all mice from wild populations examined in this survey express the ly-1.2. the ly-2.1 is distributed in eastern mice and some western mice, and the ly-2.2 is found in the remaining western mice. all ... | 1985 | 2864312 |
| evolutionary relationships between laboratory mice and subspecies of mus musculus based on the genetic study of pancreatic proteinase loci, prt-1, prt-2, prt-3, and prt-6. | various patterns of mouse pancreatic proteinase activity bands were observed on agarose gel electrophoresis. prt-1a and prt-1b genes control the positive (prt-1a) and negative (prt-1b) expression of tryptic band v, respectively; prt-2a and prt-2b correspond to chymotryptic bands ii (prt-2a) and iii (prt-2b); prt-3a and prt-3b control the low (prt-3a) and high (prt-3b) tryptic activities of band iv; the prt-1 and prt-3 loci are closely linked on the same chromosome; prt-6a and prt-6b correspond t ... | 1987 | 3300637 |
| androgen regulation of murine beta-glucuronidase expression: identification and characterization of a nonresponse variant. | one of the major features of beta-glucuronidase (gus) expression in inbred strains of the house mouse, mus musculus, is the responsiveness of this enzyme to androgen stimulation in tubule cells of the kidney. both gus-specific and nonspecific mutations have been described which define genes that serve to control this response. during examination of the expression of gus in the interbreeding subspecies, mus hortulanus, a new gus haplotype was uncovered that is characterized, in part, by a lack of ... | 1988 | 3396859 |
| altered turnover of hypoxanthine phosphoribosyltransferase in erythroid cells of mice expressing hprt a and hprt b alleles. | we have previously shown that mice expressing hprt a allele(s) have erythrocyte hypoxanthine phosphoribosyltransferase (hprt) levels that are approximately 25-fold (mus musculus castaneus) and 70-fold (mus spretus) higher than in mice that express the hprt b allele (mus musculus domesticus; c57bi/6j; c3h/heha), and that these differences in erythrocyte hprt levels are due to differences in the turnover rates of the hprt a and b proteins as reticulocytes mature to erythrocytes. we show here that: ... | 1987 | 3609725 |
| [on the problem of brucellosis in steppe mouse-like rodents]. | | 1969 | 5792170 |
| novel carbonic anhydrase (car-2) allele in spanish mice. | a unique electrophoretic form of carbonic anhydrase is characteristic of some laboratory-maintained mice of the wild mouse species mus spretus. this isozyme has been characterized by cellulose acetate electrophoresis and by isoelectric focusing. it is proposed that this isozyme be called car-2c and that its encoding allele be designated car-2c. fertile hybrids of mus spretus and c57bl/6j (car-2a) show both car-2a and car-2c bands of approximately equal intensity. the car-2c isozyme is readily id ... | 1984 | 6440531 |
| [polymorphism of t-specific dna elements of the proximal part of chromosome 17 in mice of mus genus]. | to study structural organization and polymorphism of the proximal part of chromosome 17, a hybridization analysis of dna from mice of different origin was carried out using four t-specific probes. results of the analysis allow us to conclude that the dna element copy number is quantitatively unstable and differs in distribution in both newly formed recombinant haplotypes and in wild-type chromosome 17. probe tu66 was used to study d17leh66-element organization of mus abbotti and mus hortulanus m ... | 1995 | 7622026 |
| restriction fragment length polymorphism and evolution of the mouse immunoglobulin constant region gamma loci. | genomic dna from twelve laboratory mouse strains, in addition to 21 wild-derived strains belonging to different taxa (mus musculus domesticus, mus musculus musculus, mus spretus, mus macedonicus, and mus spicilegus) and four mouse strains that are evolutionarily more distant, were analyzed by southern blot for polymorphism of the ig heavy chain constant region gamma isotype (igh-c gamma) and for the distribution of the duplicated igh-1 (c gamma 2 alpha) haplotype. distinct allelic forms of each ... | 1993 | 8099342 |
| different patterns of retinal cone topography in two genera of rodents, mus and apodemus. | recently, we have reported the peculiar topographic separation of shortwave- and middlewave-sensitive (s and m) cones in the retina of the common house mouse (mus musculus) and in a number of inbred laboratory mouse strains derived from the same species. in an attempt to follow the phylogeny of the complementary cone fields, we have investigated the retina of other mouse-like rodents. two monoclonal anti-visual pigment antibodies, os-2 and cos-1, specific to the s and m cones, respectively, have ... | 1994 | 8187156 |
| evolutionary rate variation within mus aprt. | rodents are thought to have relatively high rates of evolution, twice as fast as the rates for mammals in other orders. however, the uniformly high rates of evolution inferred for the order rodentia from mus musculus and rattus norvegicus are not consistently found for other rodent species. using a maximum likelihood phylogenetic algorithm (dnaml), we show here that mus spicilegus has a fivefold different rate of evolution in 1100 bp around the adenine phosphoribosyltransferase gene (aprt) since ... | 1996 | 8890519 |
| substitution rate variation in closely related rodent species. | the existence of evolutionary rate variation has previously been demonstrated between different orders, different species and even between different regions of the same gene. to examine rate variation between closely related species of rodents we have sequenced the adenine phosphorybosyltransferase (aprt) gene from mus spicilegus, mus pahari, mastomys hildebrandtii, stochomys longicaudatus and gerbillus campestris and compared these sequences with the previously published mus musculus, rattus no ... | 1997 | 9023989 |
| social structure of the mound-building mouse mus spicilegus revealed by genetic analysis with microsatellites. | the mound-building mouse mus spicilegus possesses a unique behaviour amongst mice. it constructs large earthen mounds and associated nesting chambers which serve to store food for immature individuals during the winter nesting period. we have used genetic analysis of four autosomal and four x-linked microsatellite loci to determine relationships between individuals inhabiting 40 mounds in bulgaria. we show that, in almost all cases, individuals in a mound are the product of multiple parentage. w ... | 1997 | 9394460 |
| [genotypic variability in populations of the mound-builder mouse mus spicilegus pet., 1882, at various life cycle stages]. | genotypic variability in two moldovian populations of moundbuilder mice mus spicilegus pet. was examined at different stages of their life cycle--at the beginning of overwintering in mounds and in the middle of summer in agrocenoses. thirty allozymes were assayed. significant differences in allele frequencies and heterozygosity between overwintered and mice born in the year of the experiment were recorded only for idh-1. this fact was related to the presence of differential mortality among overw ... | 1998 | 9749336 |
| [species-specific odor in closely related species: period of development in ontogenesis of house (mus musculus musculus) and mound-building (mus spicilegus) mice]. | in two-choice odor tests, it was shown that house and mound-building mice began to discriminate the species-specific odor of young at the age of 17 days. the mice investigated the odor of conspecific urine significantly longer than that of heterospecific urine, when the young donors of urine, were 17 days old or older. thus, the species-specific odor appears in ontogenesis of these species on the 17th day of life. | 1998 | 9891431 |
| female sexual preferences differ in mus spicilegus and mus musculus domesticus: the role of familiarization and sexual experience. | mating systems correspond to particular ecological conditions and result from proximate interactions between individuals. we compared the mating preferences of female mice of two species: the house mouse, mus musculus domesticus, and the mound-builder mouse, mus spicilegus. because of differences in their habitat, we expected to observe differences in their sexual preferences. we studied female preferences for a familiar or an unfamiliar male and the occurrence of copulation with the unfamiliar ... | 1998 | 9933543 |
| reduced nucleotide variability at an androgen-binding protein locus (abpa) in house mice: evidence for positive natural selection. | previous work has shown that the gene for the alpha subunit of androgen-binding protein, abpa, may be involved in premating isolation between different subspecies of the house mouse, mus musculus. we investigated patterns of dna sequence variation at abpa within and between species of mice to test several predictions of a model of neutral molecular evolution. intraspecific variation among 10 mus musculus domesticus alleles was compared with divergence between m. m. domesticus and m. caroli for a ... | 1999 | 10486974 |
| male-female interactions and socio-sexual isolation of mus spicilegus toward two other species of east-european mice, m. macedonicus and m. m. musculus. | social and sexual interactions were analysed as potential behavioural processes assessing reproductive isolation between the mound-building mouse, mus spicilegus, and two other wild species, m. macedonicus and m. musculus. dyadic encounters among strange m. spicilegus individuals and between m. spicilegus and the two other species members were conducted with females in an oestrus state. in intraspecific m. spicilegus encounters, there was a high incidence of close contact behaviours initiated by ... | 1999 | 10488434 |
| line-1 (l1) lineages in the mouse. | recently, a rapidly amplifying family of mouse line-1 (l1) has been identified and named t(f). the evolutionary context surrounding the derivation of the t(f) family was examined through phylogenetic analysis of sequences in the 3' portion of the repeat. the mus musculus domesticus t(f) family was found to be the terminal subfamily of the previously identified l1md4 lineage. the l1md4 lineage joins the other prototypical mouse line-1 lineage (the l1mda2 lineage) approximately 1 mya at about the ... | 2000 | 10742052 |
| conspecific and heterospecific behavioural discrimination of individual odours by mound-building mice. | we have tested the ability of male mound-building mice, mus spicilegus, to discriminate on the basis of their social odours a) two males of their own species; and b) two males of the house mouse, mus musculus domesticus. an habituation-dishabituation procedure was used. an experimental animal was presented with the scent from the same stimulus animal for four trials; on the fifth trial, scent from a second stimulus animal was presented. male mus spicilegus were able to discriminate the olfactory ... | 1998 | 10877600 |
| a comparative study of parental care between two rodent species: implications for the mating system of the mound-building mouse mus spicilegus. | paternal care is uncommon in mammals where males are more often involved in sexual competition than in providing care for their own offspring. however some species present some form of paternal care and, most of the time, this phenomenon is associated with a monogamous mating system. mice of the genus mus, such as the house mouse mus musculus domesticus, are commonly considered to be polygamous-polygynous species. in mus spicilegus, the mound-building mouse, previous results on female sexual pre ... | 2000 | 11074310 |
| short-term contact elicits heterospecific behavioral discrimination of individual odors in mound-building mice (mus spicilegus). | the authors used a habituation-dishabituation procedure to test the ability of male mound-building mice (mus spicilegus) to discriminate individual odors from males of another species of mouse. male mound-building mice failed to spontaneously discriminate individual odors from mus musculus musculus males, a natural competitor. after 24-hr contact with a male of one of the m. musculus subspecies (m. m. musculus or m. m. domesticus), experienced m. spicilegus males discriminated the individual odo ... | 2002 | 12539931 |
| generation of novel syncytium-inducing and host range variants of ecotropic moloney murine leukemia virus in mus spicilegus. | mus spicilegus is an eastern european wild mouse species that has previously been reported to harbor an unusual infectious ecotropic murine leukemia virus (mlv) and proviral envelope genes of a novel mlv subgroup. in the present study, m. spicilegus neonates were inoculated with moloney ecotropic mlv (momlv). all 17 inoculated mice produced infectious ecotropic virus after 8 to 14 weeks, and two unusual phenotypes distinguished the isolates from momlv. first, most of the m. spicilegus isolates g ... | 2003 | 12692209 |
| social regulation of reproduction in the female mound-builder mouse (mus spicilegus). | social environment influences the reproductive physiology and sexual behaviour of the female house mouse mus musculus. an all-female environment tends to suppress the oestrous cycles, whereas the presence of a male induces and synchronises sexual receptivity. however, reproductive responses to social environment may differ among the various species of rodents. in mound-builder female mice, mus spicilegus, periods of sexual receptivity are interrupted by periods where adult females display a vagi ... | 2003 | 12782228 |
| seasonal reproduction and delayed sexual maturity in mound-building mice mus spicilegus. | in the mound-building mouse, mus spicilegus, which is found from central to eastern europe, reproduction is seasonal and limited to spring and summer. in autumn, the mice build voluminous mounds composed of vegetable matter covered with earth, where juvenile animals (autumnal individuals) over-winter in groups without reproducing. autumnal animals delay reproduction until the next spring when they are 6 months old. the influence and interactions of environmental (short light period and cold temp ... | 2003 | 12921705 |
| novel host range and cytopathic variant of ecotropic friend murine leukemia virus. | a variant ecotropic friend murine leukemia virus, f-s mlv, is capable of inducing the formation of large multinucleated syncytia in mus dunni cells. this cytopathicity resembles that of spl574 mlv, a novel variant recently isolated from the spleen of a mus spicilegus mouse neonatally inoculated with moloney mlv. f-s mlv is an n-tropic friend mlv that also has the unusual ability to infect hamster cells, which are normally resistant to mouse ecotropic mlvs. syncytium induction by both f-s mlv and ... | 2004 | 15507605 |
| temporal, spatial, and ecological modes of evolution of eurasian mus based on mitochondrial and nuclear gene sequences. | we sequenced mitochondrial (cytochrome b, 12s rrna) and nuclear (irbp, rag1) genes for 17 species of the old world murine genus mus, drawn primarily from the eurasian subgenus mus. phylogenetic analysis of the newly and previously available sequences support recognition of four subgenera within mus (mus, coelomys, nannomys, and pyromys), with an unresolved basal polytomy. our data further indicate that the subgenus mus contains three distinct 'species groups': (1) a mus booduga species group, al ... | 2004 | 15522792 |
| characterization of hortulanus endogenous murine leukemia virus, an endogenous provirus that encodes an infectious murine leukemia virus of a novel subgroup. | simple retroviruses present a unique opportunity for examining the host-virus relationship. following exogenous infection and integration into the germ line, copies of these viruses can become fixed within the genome. the resulting endogenous proviral "fossils" represent a record of past retroviral infections and forms. previous work in our laboratory has been directed at dissecting the extensive nonecotropic murine leukemia virus content of the mouse genome. one such provirus, hortulanus endoge ... | 2005 | 15956577 |
| deficit in reproduction in polygynously mated females of the monogamous mound-building mouse mus spicilegus. | in monogamous mound-building mice mus spicilegus, facultative polygyny was observed in april, at the beginning of the reproductive season. in order to evaluate the cost of polygyny, we compared, under laboratory conditions, the reproductive success of trios and pairs composed of sister females mated with unrelated brother males. females in trios were able to tolerate each other during the reproductive period and to reproduce with the same male under spatial constraints. nevertheless, polygyny ha ... | 2005 | 16263067 |
| reproductive potential and gene variation in mound-building (mus spicilegus) and house (mus musculus s. str.) mouse populations as a result of their evolution. | | 2005 | 16405123 |
| paternal care in the mound-building mouse reduces inter-litter intervals. | in many rodent species males display paternal behaviour. the primary reported effect of this paternal care is to increase pup survival. in mammal females, pregnancy and lactation are energetically demanding, especially when they are concurrent in post-partum reproduction. to face this energy requirement, females generally lengthen the duration of their post-partum pregnancy. in the present study we tested whether paternal care could affect this duration in the monogamous mound building mouse mus ... | 2007 | 17394789 |
| evaluation of the social bond: a new method tested in mus spicilegus. | innovative and fruitful studies of social bonds have been developed in recent years, although the methods used to establish the existence of a social bond between two individuals have not evolved significantly. two types of paradigms have been currently used: the separation-reunion paradigm, which evaluates the distress caused by the disruption of the social bond, and choice paradigms, which test the specificity of the bond to a given individual. we have developed a new paradigm based on the ide ... | 2007 | 17923378 |
| superovulation and in vitro oocyte maturation in three species of mice (mus musculus, mus spretus and mus spicilegus). | mouse oocytes can be obtained via superovulation or using in vitro maturation although several factors, including genetic background, may affect response. our previous studies have identified various mouse species as models to understand the role of sexual selection on the evolution of sperm traits and function. in order to do comparative studies of sperm-oocyte interaction, we sought reliable methods for oocyte superovulation and in vitro maturation in mature females of three mouse species (gen ... | 2008 | 18640710 |
| comparison of urinary scents of two related mouse species, mus spicilegus and mus domesticus. | whereas the house mouse (mus domesticus) has been studied extensively in terms of physiology/behavior and pheromonal attributes, the evolutionarily related mound-building mouse (mus spicilegus) has received attention only recently due to its divergent behavioral traits related to olfaction. to date, no chemical studies on urinary volatile compounds have been performed on m. spicilegus. the rationale for our investigations was to determine if there are differences in urinary volatiles of intact a ... | 2009 | 19390894 |
| oestrous females investigate the unfamiliar male more than the familiar male in both commensal and non-commensal populations of house mice. | we studied female preferences for familiar and unfamiliar males. the subjects were laboratory-born house mice: (1) non-commensal mus musculus domesticus from the eastern part of syria along the euphrates river; and (2) commensal m. m. musculus from the czech republic. pair-choice preference tests have revealed that oestrous females of both populations sniffed towards unfamiliar males more than familiar males. in the case of females exhibiting postpartum oestrus, this preference was less pronounc ... | 2010 | 19850114 |
| blood parasites of mound-building mouse, mus spicilegus petényi, 1882 (mammalia, rodentia). | mound-building mice, mus spicilegus, were studied for the blood parasites in eastern slovakia, vicinity kechnec village near kosice town (kosická kotlina basin, 21 degrees 14' e, 48 degrees 33' n) during years 2002-2005. overall, 251 specimens were examined. the parasites were detected using microhematokrit centrifugation technique and on the giemsa's method stained blood smears and light microscopy. the parasites were found in 3.57% of specimens; 1.20% of mice were infected with bartonella sp., ... | 2010 | 20450010 |
| Food preferences and mound-building behaviour of the mound-building mice Mus spicilegus. | Optimal foraging strategies and food choice are influenced by various factors, e.g. availability, size and caloric content of the food type and predation risk. However, food choice criteria may change when food is not eaten immediately but has to be carried to a storage site for later use. For example, handling time in terms of harvesting and transport time should be optimized, particularly when the risk of predation is high. Thus, it is not clear whether food selected by hoarding animals reflec ... | 2011 | 21861181 |
| behavioral differentiation during collective building in wild mice mus spicilegus. | although well documented in social insects, the possibility of behavioral differentiation during collective building has been poorly studied in mammals. in this context, the mound-building mouse mus spicilegus is an interesting model. under natural conditions, juveniles from different litters gather vegetal material and build a sophisticated structure, the mound, under which the mice will spend winter. the first steps of this complex building process may be elicited under laboratory conditions b ... | 2011 | 22206995 |
| stable individual differences in separation calls during early development in cats and mice. | the development of ethologically meaningful test paradigms in young animals is an essential step in the study of the ontogeny of animal personality. here we explore the possibility to integrate offspring separation (distress) calls into the study of consistent individual differences in behaviour in two species of mammals, the domestic cat (felis silvestris catus) and the mound-building mouse (mus spicilegus). such vocal responses in young mammals are a potentially useful test option as they repr ... | 2015 | 26816512 |
| small mammals: paratenic hosts for species of toxocara in eastern slovakia. | toxocara spp., an aetiological agent of a serious helminthozoonosis, is a common roundworm of domestic and wild carnivores worldwide. the study aimed to estimate the seroprevalence of toxocara in small mammals from different localities in eastern slovakia. anti-toxocara antibodies were detected in 6.4% out of 2140 examined animals trapped in eastern slovakia. due to their high density and observed high seroprevalence of toxocariasis, apodemus agrarius, a. flavicollis, myodes glareolus and mus sp ... | 2013 | 22284742 |
| mus spicilegus endogenous retrovirus hemv uses murine sodium-dependent myo-inositol transporter 1 as a receptor. | we sought to determine the relationship between two recent additions to the murine leukemia virus (mlv) ecotropic subgroup: mus cervicolor isolate m813 and mus spicilegus endogenous retrovirus hemv. though divergent in sequence, the two viruses share an env protein with similarly curtailed vra and vrb regions, and infection by both is restricted to mouse cells. hemv and m813 displayed reciprocal receptor interference, suggesting that they share a receptor. expression of the m813 receptor murine ... | 2012 | 22457525 |
| difference in susceptibility of small rodent host species to infestation by ixodes ricinus larvae. | in a laboratory experiment (repeated eight times) individuals of six small rodent species were mixed with 500 ixodes ricinus larvae for 24 h, than over a 3-day-long observation period engorged ticks fallen from individually kept rodents were counted. forty engorged larvae fell from the hosts, 25% from striped field mice, 32.5% from house mice, 22.5% from common voles, 10% from bank voles, while wood mouse and steppe mouse proved to be almost free of successfully infesting ticks (both 5%). statis ... | 2017 | 28593480 |
| interspecies variation in the susceptibility of a wild-derived colony of mice to pinworms (aspiculuris tetraptera). | pinworms are common parasites in wild and laboratory rodents. despite their relative nonpathogenicity in immunocompetent models, pinworm infections add an unwanted variable and may confound some types of research. for this reason, health monitoring programs and biosecurity measures aim to minimize the spread of pinworm infections into colonies free from the organisms. wild-derived and laboratory strains of mice have shown varied susceptibility to infection with aspiculuris tetraptera, the most c ... | 2017 | 28905713 |
| ultrasonic vocalizations of male mice differ among species and females show assortative preferences for male calls. | male house mice (mus musculus) emit ultrasonic vocalizations (usvs) during courtship, which attract females, and we aimed to test whether females use these vocalizations for species or subspecies recognition of potential mates. we recorded courtship usvs of males from different mus species, mus musculus subspecies, and populations (f1 offspring of wild-caught mus musculus musculus, mus musculus domesticus (and f1 hybrid crosses), and mus spicilegus), and we conducted playback experiments to meas ... | 2015 | 26309246 |
| diversity of prdm9 zinc finger array in wild mice unravels new facets of the evolutionary turnover of this coding minisatellite. | in humans and mice, meiotic recombination events cluster into narrow hotspots whose genomic positions are defined by the prdm9 protein via its dna binding domain constituted of an array of zinc fingers (znfs). high polymorphism and rapid divergence of the prdm9 gene znf domain appear to involve positive selection at dna-recognition amino-acid positions, but the nature of the underlying evolutionary pressures remains a puzzle. here we explore the variability of the prdm9 znf array in wild mice, a ... | 2014 | 24454780 |
| genetic architecture of skewed x inactivation in the laboratory mouse. | x chromosome inactivation (xci) is the mammalian mechanism of dosage compensation that balances x-linked gene expression between the sexes. early during female development, each cell of the embryo proper independently inactivates one of its two parental x-chromosomes. in mice, the choice of which x chromosome is inactivated is affected by the genotype of a cis-acting locus, the x-chromosome controlling element (xce). xce has been localized to a 1.9 mb interval within the x-inactivation center (x ... | 2013 | 24098153 |
| anogenital distance and condition as predictors of litter sex ratio in two mouse species: a study of the house mouse (mus musculus) and mound-building mouse (mus spicilegus). | the trivers - willard hypothesis (1973) suggests that the maternal condition may affect the female's litter size and sex ratio. since then other factors had been found. previous findings revealed in the case of some mammalian species, that females with larger anogenital distance have smaller litters, while the sex ratio is male-biased. that has only been demonstrated in laboratory animals, while the genetic diversity of a wild population could mask the phenomenon seen in laboratory colonies. we ... | 2013 | 24069268 |
| development of the social behavior of two mice species with contrasting social systems. | the house mouse (mus musculus) and the mound-building mouse (m. spicilegus) differ in their mating and social systems. the m. musculus is polygynous and females tend to breed cooperatively while m. spicilegus is known to be monogamous and famous for its unique cooperative behavior; the communal overwintering. mus spicilegus is considered as a highly aggressive species in the genus mus. in the present study, we attempted to analyze the development of aggressive and sociable behavior in these spec ... | 2014 | 25363698 |
| personality modulates proportions of cd4+ regulatory and effector t cells in response to socially induced stress in a rodent of wild origin. | the way how individuals respond to chronic challenges can vary tremendously, and such differences are closely linked to personality. the few available studies on individual differences in stress-related immunosuppression in non-human mammals have been mainly carried out with laboratory strains. we conducted a study in male mound-building mice (mus spicilegus) of wild origin. we distinguished between high (han) and low anxious/neophobic (lan) personality types, quantified by subjects' consistent ... | 2016 | 27666163 |
| correlates between ear postures and emotional reactivity in a wild type mouse species. | facial expressions have been extensively used to assess emotions in humans and thus could be extended to other species that also display facial movements. in mice both painful and fearful situations have been associated with particular shifts in facial expressions. like other species, mice frequently show a great inter-individual variability when exposed to emotional situations, but so far no study has been conducted to investigate if facial expressions are related to these differences. the aim ... | 2015 | 26275830 |
| efficiency of delayed reproduction in mus spicilegus. | to cope with seasonally varying ecological constraints, some mammals temporally suppress breeding or delay their first reproduction. in field conditions, mound-building mice (mus spicilegus) born in spring begin to reproduce when 2-3 months old, whereas individuals born at the end of summer delay their first reproduction for 6-8 months until the following spring. in order to test age effects on reproductive performance in m. spicilegus, sexually naïve mice were paired when 2-3 months old or at 6 ... | 2015 | 25484133 |
| mus spicilegus. | | 2012 | 23098587 |
| concordance in mate choice in female mound-building mice. | females must evaluate male quality to perform mate choice. since females generally base their selection on different male features, individual females may differ in their choice. in this study, we show that concordance between females in mate choice decisions may arise without any experimental maximization of a particular attractive trait. choice tests were performed in mound-building mice, mus spicilegus, a monogamous species. body odours of two male donors were presented to 12 female subjects ... | 2012 | 22464430 |
| multiple forms of male-specific simple repetitive sequences in the genus mus. | previous reports indicate that in laboratory strains of mice, males are distinct from females in possession of repetitive dna, notably devoid of eco ri and hae iii sites and rich in the simple tetranucleotides gata/gaca. we report here that such sequences originated in an ancestor common to laboratory mice, mus hortulanus, m. spretus, and possibly also m. cookii. interestingly, other male-specific satellite sequences were detected in m. caroli, m. cookii, m. saxicola, and m. minutoides. this nov ... | 1987 | 3118040 |
| how being synanthropic affects the gut bacteriome and mycobiome: comparison of two mouse species with contrasting ecologies. | the vertebrate gastrointestinal tract is colonised by microbiota that have a major effect on the host's health, physiology and phenotype. once introduced into captivity, however, the gut microbial composition of free-living individuals can change dramatically. at present, little is known about gut microbial changes associated with adaptation to a synanthropic lifestyle in commensal species, compared with their non-commensal counterparts. here, we compare the taxonomic composition and diversity o ... | 2020 | 32631223 |
| effect of early experience on neuronal and behavioral responses to con- and heterospecific odors in closely related mus taxa: epigenetic contribution in formation of precopulatory isolation. | the most effective learning occurs during sensitive periods. olfactory plasticity to main social olfactory cues is limited to a critical period to a large degree. the objective was to evaluate the influence of early olfactory experience on the behavioral and neuronal responses of males to con- and heterospecific odors of receptive females in two species, m. musculus (subspecies musculus, wagneri) and m. spicilegus, and thus to determine the potential role of epigenetic contribution in the format ... | 2019 | 30813903 |
| a high quality genome for mus spicilegus, a close relative of house mice with unique social and ecological adaptations. | genomic data for the closest relatives of house mice (mus musculus species complex) are surprisingly limited. here, we present the first complete genome for a behaviorally and ecologically unique member of the sister clade to house mice, the mound-building mouse, mus spicilegus using read cloud sequencing and de novo assembly we produced a 2.50 gbp genome with a scaffold n50 of 2.27 mbp. we constructed >25 000 gene models, of which the majority had high homology to other mus species. to evaluate ... | 2018 | 29794166 |
| the influence of familiarity and temperature on the huddling behavior of two mouse species with contrasting social systems. | huddling with other individuals is an effective way to reduce heat loss. this cooperative behavior requires that the individuals tolerate each other's presence at least for a certain time or under certain circumstances. in our study, we investigated the effects of ambient temperature and familiarity on the huddling behavior of two closely related mouse species, the mound-building mouse (mus spicilegus) and the house mouse (mus musculus musculus). while their geographic distribution overlaps, the ... | 2018 | 29524551 |
| differences between fast and slow explorers in short-term tail temperature responses to handling in a rodent of wild origin. | animals of different behavioral types typically show associated differences in their physiological stress response, including differential reactivity of the sympathetic nervous system. infrared thermography offers the possibility to explore this link in a non-invasive way via the quantification of fine-scale changes in peripheral body temperature due to changes in cutaneous blood flow. we used this technique to investigate the association between exploration tendency, a behavioral trait frequent ... | 2019 | 31473286 |
| new records for anaplasma phagocytophilum infection in small mammal species. | tick-borne diseases pose a major threat in public health. the epidemiological dynamics of these diseases depends on the tick vector species and their hosts, as well as the geographical distribution and ecology of both. among many possible hosts for ticks, small mammals have a major role in the development of immature stages of several tick species. small mammals are also important reservoir hosts for several pathogenic agents and possible reservoirs for anaplasma phagocytophilum. in this context ... | 2018 | 29558990 |