| [how do mother and young of the bat myotis myotis recognize each other after mother's return from a hunting flight?]. | mouse-eared bats leave their young at their sleeping place during the nocturnal hunting flight. the young wait for their mothers' return crowded together in small groups. it is examined whether mother and offspring recognize each other upon the mother's return. it is experimentally shown that each recognizes the other by smell and ultrasonic sound. | 1977 | 930446 |
| [short-term memory of the mouse-eared bat, myotis myotis, and its biological value]. | myotis myotis can precisely locate and memorize sounds made by insects moving on the ground. its competent approach even after an interval indicates an accurate short-term memory, important in catching prey and greatly influencing its distribution and abundance. | 1975 | 1202850 |
| persistence of the nervus terminalis in adult bats: a morphological and phylogenetical approach. | the presence of the terminalis system in adult bats is demonstrated by light microscopical investigation of several species of microchiroptera. in late embryonic and fetal stages of the mouse-eared bat (myotis myotis) the compact central terminalis ganglion gradually differentiates into a three-dimensional network of cord-like ganglia and fiber bundles. rostrally the terminalis system is in immediate contact with the medial-most fila olfactoria; caudally terminalis rootlets attach near the borde ... | 1988 | 3228690 |
| the primary structure of the hemoglobin from the bat macrotus californicus (chiroptera). | the complete primary structure of the hemoglobin from the bat macrotus californicus (chiroptera) is presented. this hemoglobin consists of only one component. the alpha- and beta-chains were separated by reverse phase high performance liquid chromatography. the sequences of both chains were established by automatic edman degradation of the chains and the tryptic peptides, as well as of the c-terminal peptide obtained by acidic hydrolysis of the asp-pro bond in the beta-chains using the film- and ... | 1987 | 3593539 |
| the primary structure of the pallid bat (antrozous pallidus, chiroptera) hemoglobin. | the complete primary structure of the hemoglobin from the pallid bat (antrozous pallidus, microchiroptera) is presented. this hemoglobin consists of two components with identical amino-acid sequences, differing, however, in the n-terminus which is formylated in 12.5% of the beta-chains. the alpha- and beta-chains were separated by reversed phase high performance liquid chromatography. the sequences of both chains were established by automatic edman degradation with the film technique or gas phas ... | 1987 | 3675871 |
| the primary structure of a mouse-eared bat (myotis velifer, chiroptera) hemoglobin. | the hemoglobin of the mouse-eared bat myotis velifer consists of one component. we present the primary structures of the alpha- and beta-globin chains which have been separated by chromatography on carboxymethyl-cellulose cm-52. the sequences have been determined by edman-degradation with the film technic or the gas phase method, using the native chains and the tryptic peptides, as well as the c-terminal prolyl-peptides obtained by acid hydrolysis of the asp-pro-bonds. compared to the correspond ... | 1986 | 3828074 |
| stability of the sperm plasma membrane of hibernating bats (myotis velifer) compared with other mammals. | previous experiments have established that the long-lived spermatozoa of hibernating bats are resistant to the acrosome reaction and fertilization in vitro conventional techniques. we tested the hypothesis that the membranes of these spermatozoa are more resistant to perturbation than those of other mammals. we exposed them to non-specific bilayer destabilizing agents and abrupt changes in incubation temperature and tested their response by observing their status (motility and viability) after a ... | 1993 | 8463999 |
| the primary structure of the hemoglobin from the lobe-lipped bat (chalinolobus morio, microchiroptera). | the hemoglobin of the lobe-lipped bat (chalinolobus morio, vespertilionidae) is composed of 45% hbi and 55% hbii. both components show identical alpha-chains but differ at the following three positions of their beta-chains: beta i/beta ii 21: glu/asp, 70: ser/ala, and 135: gln/leu. high performance liquid chromatography revealed pure alpha-chains and a mixture of only partly separated beta-chains. based on this material, the primary structures of all three globin chains could be achieved by auto ... | 1995 | 8590629 |
| paternity assessment and population subdivision in a natural population of the larger mouse-eared bat myotis myotis. | a hypervariable simple sequence locus and mitochondrial d-loop sequences were used to analyse genetically a natural population of the larger mouse-eared bat myotis myotis in southern bavaria. tests for population subdivision and direct observations suggest that females return to their natal sites, while males disperse. the males present in female nursery colonies are not related to the females. paternity assessment for 46 offspring from a particular nursery colony showed that there are no males ... | 1997 | 9076978 |
| noctuid moths show neural and behavioural responses to sounds made by some bat-marking rings. | coloured rings are often used for marking bats so that specific individuals can be recognized. we noticed that the rings of mouse-eared bats, myotis myotis and myotis blythii, in a combination of one plastic-split and one metallic ring on the same forearm, emitted sounds that were largely ultrasonic each time the rings met in flight. we recorded the ring sounds and the echolocation calls produced by the bats, and played them back to neural preparations of lesser yellow underwing moths, noctua co ... | 1999 | 10202090 |
| is the gibraltar strait a barrier to gene flow for the bat myotis myotis (chiroptera: vespertilionidae)? | because of their role in limiting gene flow, geographical barriers like mountains or seas often coincide with intraspecific genetic discontinuities. although the strait of gibraltar represents such a potential barrier for both plants and animals, few studies have been conducted on its impact on gene flow. here we test this effect on a bat species (myotis myotis) which is apparently distributed on both sides of the strait. six colonies of 20 myotis myotis each were sampled in southern spain and n ... | 2000 | 11091312 |
| bat ectoparasites from the trans-pecos region of texas, including notes from big bend national park. | ectoparasites of 13 species of molossid, mormoopid, and vespertilionid bats from the trans-pecos region of texas were studied, as follows: antrozous pallidus (leconte), corynorhinus townsendii (cooper), eptesicus fuscus (palisot de beauvois), lasiurus cinereus (palisot de beauvois), mormoops megalophylla (peters), myotis thysanodes g. s. miller, myotis velifer (j. a. allen), myotis volans (h. allen), myotis yumanensis (h. allen), nyctinomops femorosaccus (merriam), nyctinomops macrotis (gray), p ... | 2001 | 11372965 |
| the energetic grooming costs imposed by a parasitic mite (spinturnix myoti) upon its bat host (myotis myotis). | parasites often exert severe negative effects upon their host's fitness. natural selection has therefore prompted the evolution of anti-parasite mechanisms such as grooming. grooming is efficient at reducing parasitic loads in both birds and mammals, but the energetic costs it entails have not been properly quantified. we measured both the energetic metabolism and behaviour of greater mouse-eared bats submitted to three different parasite loads (no, 20 and 40 mites) during whole daily cycles. mi ... | 2001 | 11571055 |
| new lyssavirus genotype from the lesser mouse-eared bat (myotis blythi), kyrghyzstan. | the aravan virus was isolated from a lesser mouse-eared bat (myotis blythi) in the osh region of kyrghyzstan, central asia, in 1991. we determined the complete sequence of the nucleoprotein (n) gene and compared it with those of 26 representative lyssaviruses obtained from databases. the aravan virus was distinguished from seven distinct genotypes on the basis of nucleotide and amino acid identity. phylogenetic analysis based on both nucleotide and amino acid sequences showed that the aravan vir ... | 2003 | 12643828 |
| environmental conditions, rather than season, determine torpor use and temperature selection in large mouse-eared bats (myotis myotis). | we tested whether food availability, thermal environment and time of year affect torpor use and temperature selection in the large mouse-eared bat (myotis myotis) in summer and winter. food-deprived bats were torpid longer than bats offered food ad libitum. bats placed in a gradient of low (0 degrees c-25 degrees c) ambient temperatures (t(a)) spent more time in torpor than bats in a gradient of high (7 degrees c-43 degrees c) t(a)'s. however, we did not observe seasonal variations in the use of ... | 2007 | 16891137 |
| terminal nerve in the mouse-eared bat (myotis myotis): ontogenetic aspects. | as in other mammals, ontogenesis of the terminal nerve (tn) in the mouse-eared bat (myotis myotis) starts shortly after the formation of the olfactory placode, a derivative of the ectoderm. during development of the olfactory pit, proliferating neuroblasts thicken the placodal epithelium and one cell population migrates toward the rostroventral tip of the telencephalon. here they accumulate in a primordial terminal ganglion, which successively divides into smaller units. initial fibers of the tn ... | 2006 | 17031808 |
| echolocation and passive listening by foraging mouse-eared bats myotis myotis and m. blythii. | the two sibling mouse-eared bats, myotis myotis and m. blythii, cope with similar orientation tasks, but separate their trophic niche by hunting in species-specific foraging microhabitats. previous work has shown that both species rely largely on passive listening to detect and glean prey from substrates, and studies on other bat species have suggested that echolocation is ;switched off' during passive listening. we tested the hypothesis that mouse-eared bats continuously emit echolocation calls ... | 2007 | 17170159 |
| host sex and ectoparasites choice: preference for, and higher survival on female hosts. | 1. sex differences in levels of parasite infection are a common rule in a wide range of mammals, with males usually more susceptible than females. sex-specific exposure to parasites, e.g. mediated through distinct modes of social aggregation between and within genders, as well as negative relationships between androgen levels and immune defences are thought to play a major role in this pattern. 2. reproductive female bats live in close association within clusters at maternity roosts, whereas non ... | 2007 | 17584376 |
| italy as a major ice age refuge area for the bat myotis myotis (chiroptera: vespertilionidae) in europe. | the distribution of biota from the temperate regions changed considerably during the climatic fluctuations of the quaternary. this is especially true for many bat species that depend on warm roosts to install their nursery colonies. surveys of genetic variation among european bats have shown that the southern peninsulas (iberia and the balkans) harbour endemic diversity, but to date, no such surveys have been conducted in the third potential glacial refuge area, the apennine peninsula. we report ... | 2008 | 18331245 |
| variation in ectoparasite load reflects life history traits in the lesser mouse-eared bat myotis blythii (chiroptera: vespertilionidae) in western iran. | we studied seasonal variation of ectoparasite load (number of parasites per individual bat) in free-ranging populations of the lesser mouse-eared bat myotis blythii in western iran. data for 1 species each of batfly (nycteribidae), tick (ixodidae), and mite (spinturnicidae) are reported for a 1 yr period. patterns of parasite load during this time differed considerably among species. however, the parasite load increased markedly in pregnant females in spring and early summer. during the same tim ... | 2008 | 18605782 |
| active monitoring of eblv infection in natural colonies of the mouse-eared bat (myotis myotis). | bats are important reservoir hosts of rna viruses, including lyssaviruses, which can cross the species barrier to infect humans and other domestic and wild non-flying mammals. six of the seven lyssavirus genotypes described to date infect bats. in europe, two genotypes of lyssavirus, european bat lyssavirus types 1 and 2 (eblv-1 and eblv-2), circulate among several bat species and numerous bats are found infected every year. to provide epidemiologists and public health officials with data to eff ... | 2008 | 18634518 |
| foraging bats avoid noise. | ambient noise influences the availability and use of acoustic information in animals in many ways. while much research has focused on the effects of noise on acoustic communication, here, we present the first study concerned with anthropogenic noise and foraging behaviour. we chose the greater mouse-eared bat (myotis myotis) as a model species because it represents the especially vulnerable group of gleaning bats that rely on listening for prey rustling sounds to find food (i.e. 'passive listeni ... | 2008 | 18805817 |
| variability of the approach phase of landing echolocating greater mouse-eared bats. | the approach phase of landing vespertilionid bats ends with a group of calls, which either consists of buzz i alone or buzz i and buzz ii. to understand the possible role of buzz ii, we trained myotis myotis to land on a vertical grid, and compared the flight and echolocation behavior during approach in trials with and without buzz ii. during the approach, we did not find any differences in the echolocation behavior until the end of buzz i which indicated whether buzz ii was emitted or not. howe ... | 2009 | 18998148 |
| sensory ecology: noise annoys foraging bats. | traffic noise reduces foraging time and effort in greater mouse-eared bats, presumably by masking rustling sounds made by moving arthropods. anthropogenic noise is becoming a major concern in conservation biology. | 2008 | 19081044 |
| the long lifespan of two bat species is correlated with resistance to protein oxidation and enhanced protein homeostasis. | altered structure, and hence function, of cellular macromolecules caused by oxidation can contribute to loss of physiological function with age. here, we tested whether the lifespan of bats, which generally live far longer than predicted by their size, could be explained by reduced protein damage relative to short-lived mice. we show significantly lower protein oxidation (carbonylation) in mexican free-tailed bats (tadarida brasiliensis) relative to mice, and a trend for lower oxidation in sampl ... | 2009 | 19244163 |
| the voice of bats: how greater mouse-eared bats recognize individuals based on their echolocation calls. | echolocating bats use the echoes from their echolocation calls to perceive their surroundings. the ability to use these continuously emitted calls, whose main function is not communication, for recognition of individual conspecifics might facilitate many of the social behaviours observed in bats. several studies of individual-specific information in echolocation calls found some evidence for its existence but did not quantify or explain it. we used a direct paradigm to show that greater mouse-ea ... | 2009 | 19503606 |
| a nocturnal mammal, the greater mouse-eared bat, calibrates a magnetic compass by the sun. | recent evidence suggests that bats can detect the geomagnetic field, but the way in which this is used by them for navigation to a home roost remains unresolved. the geomagnetic field may be used by animals both to indicate direction and to locate position. in birds, directional information appears to be derived from an interaction of the magnetic field with either the sun or the stars, with some evidence suggesting that sunset/sunrise provides the primary directional reference by which a magnet ... | 2010 | 20351296 |
| mites as biological tags of their hosts. | movements and spatial distribution of host populations are expected to shape the genetic structure of their parasite populations. comparing the genetic patterns of both interacting species may improve our understanding of their evolutionary history. moreover, genetic analyses of parasites with horizontal transmission may serve as indicators of historical events or current demographic processes that are not apparent in the genetic signature of their hosts. here, we compared mitochondrial variatio ... | 2010 | 20546134 |
| cave-dwelling bats do not avoid tmt and 2-pt - components of predator odour that induce fear in other small mammals. | recognition and avoidance of predators is fundamental for the survival of prey animals. here we conducted the first study assessing chemosensory predator recognition in cave-dwelling bats. we used a y-maze approach to test the reaction of greater mouse-eared bats (myotis myotis) to two synthetically derived components of predator odour (2,4,5-trimethyl-3-thiazoline, tmt, a component of fox faeces scent; and 2-propylthietane, 2-pt, a component of mustelid scent) and to the natural scent of the le ... | 2010 | 20581275 |
| how greater mouse-eared bats deal with ambiguous echoic scenes. | echolocating bats have to assign the received echoes to the correct call that generated them. failing to do so will result in the perception of virtual targets that are positioned where there is no actual target. the assignment of echoes to the emitted calls can be ambiguous especially if the pulse intervals between calls are short and kept constant. here, we present first evidence that greater mouse-eared bats deal with ambiguity by changing the pulse interval more often, in particular by reduc ... | 2011 | 20652706 |
| thermal windows on brazilian free-tailed bats facilitate thermoregulation during prolonged flight. | the brazilian free-tailed bat (tadarida brasiliensis) experiences challenging thermal conditions while roosting in hot caves, flying during warm daylight conditions, and foraging at cool high altitudes. using thermal infrared cameras, we identified hot spots along the flanks of free-ranging brazilian free-tailed bats, ventral to the extended wings. these hot spots are absent in syntopic cave myotis (myotis velifer), a species that forages over relatively short distances, and does not engage in l ... | 2010 | 20811514 |
| the cercal organ may provide singing tettigoniids a backup sensory system for the detection of eavesdropping bats. | conspicuous signals, such as the calling songs of tettigoniids, are intended to attract mates but may also unintentionally attract predators. among them bats that listen to prey-generated sounds constitute a predation pressure for many acoustically communicating insects as well as frogs. as an adaptation to protect against bat predation many insect species evolved auditory sensitivity to bat-emitted echolocation signals. recently, the european mouse-eared bat species myotis myotis and m. blythii ... | 2010 | 20856887 |
| hunting at the highway: traffic noise reduces foraging efficiency in acoustic predators. | noise pollution from human traffic networks and industrial activity impacts vast areas of our planet. while anthropogenic noise effects on animal communication are well documented, we have very limited understanding of noise impact on more complex ecosystem processes, such as predator-prey interactions, albeit urgently needed to devise mitigation measures. here, we show that traffic noise decreases the foraging efficiency of an acoustic predator, the greater mouse-eared bat (myotis myotis). thes ... | 2010 | 21084347 |
| genetic signature of reproductive manipulation in the phylogeography of the bat fly, trichobius major. | the bat fly (trichobius major) is a blood-feeding ectoparasite of the cave myotis (myotis velifer). a recent mitochondrial dna (mtdna) study examining population structure of t. major in the south central united states detected a single haplotype from all individuals examined (n = 48 from 12 different caves), representing one of only a few known examples of such widespread mtdna uniformity. we examined nuclear genetic diversity using amplified fragment length polymorphism and detected high level ... | 2011 | 21890840 |
| parasite diversity of european myotis species with special emphasis on myotis myotis (microchiroptera, vespertilionidae) from a typical nursery roost. | bats belong to one of the most species-rich orders within the mammalia. they show a worldwide distribution, a high degree of ecological diversification as well as a high diversity of associated parasites and pathogens. despite their prominent and unique role, the knowledge of their parasite-host-relationships as well as the mechanisms of co-evolutionary processes are, partly due to strict conservation regulations, scarce. | 2015 | 25880235 |
| blood mirnomes and transcriptomes reveal novel longevity mechanisms in the long-lived bat, myotis myotis. | chiroptera, the bats, are the only order of mammals capable of true self-powered flight. bats exhibit a number of other exceptional traits such as echolocation, viral tolerance and, perhaps most puzzlingly, extreme longevity given their body size. little is known about the molecular mechanisms driving their extended longevity particularly at the levels of gene expression and post-transcriptional regulation. to elucidate the molecular mechanisms that may underlie their unusual longevity, we have ... | 2016 | 27832764 |
| isolation and characterization of a novel gammaherpesvirus from a microbat cell line. | while employing deep sequencing and de novo assembly to characterize the mrna transcript profile of a cell line derived from the microbat myotis velifer incautus, we serendipitously identified mrnas encoding proteins with a high level of identity to herpesviruses. a majority were closely related to proteins of equine herpesvirus 2 (ehv-2), a horse gammaherpesvirus. we demonstrated by electron microscopy the presence of herpesvirus-like particles in the microbat cells. passage of supernatants fro ... | 2017 | 27303702 |
| discovery of a novel bat gammaherpesvirus. | zoonosis is the leading cause of emerging infectious diseases. in a recent article, r. s. shabman et al. (msphere 1[1]:e00070-15, 2016, http://dx.doi.org/10.1128/msphere.00070-15) report the identification of a novel gammaherpesvirus in a cell line derived from the microbat myotis velifer incautus. this is the first report on a replicating, infectious gammaherpesvirus from bats. the new virus is named bat gammaherpesvirus 8 (bghv8), also known as myotis gammaherpesvirus 8, and is able to infect ... | 2017 | 27303690 |
| wax ester analysis of bats suffering from white nose syndrome in europe. | the composition of wax esters (we) in the fur of adult greater mouse-eared bats (myotis myotis), either healthy or suffering from white nose syndrome (wns) caused by the psychrophilic fungus pseudogymnoascus destructans, was investigated by high-resolution mass spectrometry analysis in the positive ion mode. profiling of lipid classes showed that we are the most abundant lipid class, followed by cholesterol esters, and other lipid classes, e.g., triacylglycerols and phospholipids. we abundance i ... | 2015 | 25975369 |
| dna mmr systems, microsatellite instability and antioxidant activity variations in two species of wild bats: myotis velifer and desmodus rotundus, as possible factors associated with longevity. | the accumulation of oxidative damage to biomolecules, such as dna, is known to induce alterations in the cell's mechanisms and structure that might lead to the aging process. dna mismatch repair system (mmr) corrects base mismatches generated during dna replication that have escaped the proofreading process. in addition, antioxidant enzymes can reduce reactive oxygen species effects in order to protect cells from oxidizing damage. in order to determine the importance of these associated factors ... | 2012 | 22453932 |
| molecular phylogeny and morphological revision of myotis bats (chiroptera: vespertilionidae) from taiwan and adjacent china. | in taxonomic accounts, three species of myotis have been traditionally reported to occur on the island of taiwan: watase's bat (m. formosus watasei kishida), the formosan broad-muzzled bat (m. muricola latirostris kishida) and the formosan mouse-eared bat (m. adversus taiwanensis linde). the discovery in 1997 of an unknown taxon not fitting to the description of any of these species encouraged us to re-examine more thoroughly the systematics and phylogeny of myotis bats inhabiting taiwan. we use ... | 2015 | 25781252 |
| a new species of cestode, vampirolepis muraiae n. sp. (cyclophyllidea: hymenolepididae), from a chinese bat. | vampirolepis muraiae n. sp. (cestoda: cyclophyllidea: hymenolepididae) is described on the basis of a single specimen from a mouse-eared bat, myotis sp., from yunnan province, china. it is distinguished from its congeners on the basis of the size and shape of the rostellar hooks, which have a blade shorter than the guard, the tubular structure of the initial stage of the developing uterus and eggs with a thick outer coat. | 2012 | 22488430 |
| winter ecology of ectoparasites collected from hibernating myotis velifer (allen) in southwestern oklahoma (chiroptera: vespertilionidae. | during the winter of 1971-72, trichobius major, t, corynorhini, mydopsylla collinsi, macronyssus crosbyi, m. unidens, paraspinturnix globosus, spinturnix carloshoffmani, ornithodoros sp., albeckia senase, nycteriglyphus sp. a, and olabidocarpus sp. were quantitatively collected from hibernating myotis velifer, plecotus townsendii, and pipistrellus subflavus. significantly greater numbers of s. carloshoffmani and m. crosbyi were found on female m. velifer, while greater numbers of p. globosus wer ... | 1976 | 957042 |
| molecular evolution of bat color vision genes. | the two suborders of bats, megachiroptera (megabats) and microchiroptera (microbats), use different sensory modalities for perceiving their environment. megabats are crepuscular and rely on a well-developed eyes and visual pathway, whereas microbats occupy a nocturnal niche and use acoustic orientation or echolocation more than vision as the major means of perceiving their environment. in view of the differences associated with their sensory systems, we decided to investigate the function and ev ... | 2004 | 14660703 |
| biochemical variation and genic similarity of myotis velifer and macrotus californicus. | | 1976 | 1277791 |
| [dietary differences and niche partitioning in three sympatric myotis species]. | the morphology and diet characteristics of three myotis species roosting in the same cave were studied in anlong county, guizhou from september to november 2005. the three mouse-eared bats were the chinese water myotis (myotis laniger) "body mass: (4.46±0.53) g, forearm: (34.63±1.45 mm)", fringed long-footed myotis (myotis fimbriatus) "body mass: (5.15±1.76) g, forearm: (35.20±1.07) mm" and szechwan myotis (myotis altarium) "body mass: (10.94±0.87) g, forearm: (45.21±1.15) mm". there were signif ... | 2012 | 22467393 |
| the effect of host social system on parasite population genetic structure: comparative population genetics of two ectoparasitic mites and their bat hosts. | the population genetic structure of a parasite, and consequently its ability to adapt to a given host, is strongly linked to its own life history as well as the life history of its host. while the effects of parasite life history on their population genetic structure have received some attention, the effect of host social system has remained largely unstudied. in this study, we investigated the population genetic structure of two closely related parasitic mite species (spinturnix myoti and spint ... | 2014 | 24479530 |
| food availability as a major driver in the evolution of life-history strategies of sibling species. | life-history theory predicts trade-offs between reproductive and survival traits such that different strategies or environmental constraints may yield comparable lifetime reproductive success among conspecifics. food availability is one of the most important environmental factors shaping developmental processes. it notably affects key life-history components such as reproduction and survival prospect. we investigated whether food resource availability could also operate as an ultimate driver of ... | 2017 | 28649329 |
| variation of parasitism patterns in bats during hibernation: the effect of host species, resources, health status, and hibernation period. | during critical periods of food shortage or variable climatic conditions, the choice of an appropriate host can increase the survival and reproductive performance of parasites. in turn, one of the unique adaptations to periodical food shortages is hibernation, which is often found among insectivorous bat species in the temperate zone. while hibernating, bats are completely defenseless against both predators and ectoparasites, their immune and endocrine systems are diminished, and survival is dep ... | 2016 | 27240839 |
| deeply torpid bats can change position without elevation of body temperature. | because body temperature is tightly coupled to physiological function, hibernating animals entering deep torpor are typically immobile. we analysed thermal behaviour and locomotory activity of hibernating greater mouse-eared bats myotis myotis and found two types of movement behaviour related to body temperature, i.e. movement at high fur temperature and at low fur temperatures (tflow; <5°c). first tflow movements appeared at the beginning of march and often occurred during long torpor bouts. in ... | 2017 | 28010809 |
| the complete mitochondrial genome of the greater mouse-eared bat, myotis myotis (chiroptera: vespertilionidae). | in this study, we report the complete mitochondrial genome of the greater mouse-eared bat, myotis myotis. the mitogenome is 17 213 bp with base composition a (34.2%), g (13%), c (22.4%), and t (30.5%). the genome shows conserved synteny with other mammalian mitogenomes, containing 13 protein-coding genes, 2 ribosomal rna genes, 22 transfer rna genes, and 1 control region (d-loop). the majority of the genes are encoded on the h-strand, except for nd6 and eight trnas. all protein-coding genes star ... | 2017 | 26713722 |
| plasma proteomic analysis of active and torpid greater mouse-eared bats (myotis myotis). | hibernation is a physiological adaptation to overcome extreme environmental conditions. it is characterized by prolonged periods of torpor interrupted by temporary arousals during winter. during torpor, body functions are suppressed and restored rapidly to almost pre-hibernation levels during arousal. although molecular studies have been performed on hibernating rodents and bears, it is unclear how generalizable the results are among hibernating species with different physiology such as bats. as ... | 2015 | 26586174 |
| first record of ixodes ariadnae in germany - short communication. | a long-legged tick was collected from a hibernating greater mouse-eared bat (myotis myotis) in baden-württemberg, germany. based on morphological characteristics as well as on partial coi and 16s rdna gene sequences the tick was identified as an engorged female of ixodes ariadnae. the greater mouseeared bat is a new host record for this tick species. taking into account the geographical position of the collection site and the known migration distance of the greater mouse-eared bat, the present d ... | 2015 | 26551424 |
| a nonlethal sampling method to obtain, generate and assemble whole blood transcriptomes from small, wild mammals. | the acquisition of tissue samples from wild populations is a constant challenge in conservation biology, especially for endangered species and protected species where nonlethal sampling is the only option. whole blood has been suggested as a nonlethal sample type that contains a high percentage of bodywide and genomewide transcripts and therefore can be used to assess the transcriptional status of an individual, and to infer a high percentage of the genome. however, only limited quantities of bl ... | 2016 | 26186236 |
| the effect of hibernation on the morphology and histochemistry of the intestine of the greater mouse-eared bat, myotis myotis. | seasonal variations in morphometry and histochemistry of the intestine have been examined in the active and hibernating greater mouse-eared bat, myotis myotis, using histological and histochemical techniques. the results of morphometric analyses indicated that hibernation affected the villus height, villus width, crypt depth and crypt width of the duodenum, jejunum and ileum. histochemical analysis showed that goblet cells of the small and large intestine contain acidic and neutral mucosubstance ... | 2014 | 25456312 |
| do greater mouse-eared bats experience a trade-off between energy conservation and learning? | bats, some species of rodents and some birds are able to save energy during the summer period by decreasing their body temperature and falling into torpor. some studies indicate that torpor prevents sleeping and causes effects similar to sleep deprivation. impairment of processes stabilizing memory slows down learning accuracy and speed. we conducted two experiments to test whether greater mouse-eared bats, myotis myotis, which commonly use torpor during the summer period, experience a trade-off ... | 2014 | 25392460 |
| a functional role of the sky's polarization pattern for orientation in the greater mouse-eared bat. | animals can call on a multitude of sensory information to orient and navigate. one such cue is the pattern of polarized light in the sky, which for example can be used by birds as a geographical reference to calibrate other cues in the compass mechanism. here we demonstrate that the female greater mouse-eared bat (myotis myotis) uses polarization cues at sunset to calibrate a magnetic compass, which is subsequently used for orientation during a homing experiment. this renders bats the only mamma ... | 2014 | 25050897 |
| is parasite load dependent on host aggregation size? the case of the greater mouse-eared bat myotis myotis (mammalia: chiroptera) and its parasitic mite spinturnix myoti (acari: gamasida). | the risk of parasite infection grows with the size of host aggregations, which, in turn, may also depend on host sex and age and the quality of environmental resources. herein, we studied the relationship between ectoparasitic infections with the wing mite (spinturnix myoti) and the size of the breeding colonies, sex, age, and body condition index (bci) of its host, the greater mouse-eared bat (myotis myotis). the influence of environmental quality in the carpathian mountains (poland) was also e ... | 2014 | 24604385 |
| the bat genome: gc-biased small chromosomes associated with reduction in genome size. | bats are distinct from other mammals in their small genome size as well as their high metabolic rate, possibly related to flight ability. although the genome sequence has been published in two species, the data lack cytogenetic information. in this study, the size and gc content of each chromosome are measured from the flow karyotype of the mouse-eared bat, myotis myotis (mmy). the smaller chromosomes are gc-rich compared to the larger chromosomes, and the relative proportions of homologous segm ... | 2013 | 23881029 |
| infestation and seasonal activity of ixodes vespertilionis koch, 1844 (acari: ixodidae) on the maghreb mouse-eared bat, myotis punicus felten, 1977, in northeastern algeria. | infestation of ixodes vespertilionis koch, 1844 on myotis punicus felten, 1977 from two sites (trios tunnel and sidi trad cave) in northeastern algeria was studied. an overall infestation of 41.4% for all stages was found among bats collected from both sites. by stage, a total of eight females, 70 nymphs, and 107 larvae were recovered from both populations. the number of females recovered per bat at sidi trad ranged from 0-1, for nymphs 0-2, and for larvae 0-2. while no female ticks were collect ... | 2016 | 27232132 |
| using collision cones to assess biological deconfliction methods. | biological systems consistently outperform autonomous systems governed by engineered algorithms in their ability to reactively avoid collisions. to better understand this discrepancy, a collision avoidance algorithm was applied to frames of digitized video trajectory data from bats, swallows and fish (myotis velifer, petrochelidon pyrrhonota and danio aequipinnatus). information available from visual cues, specifically relative position and velocity, was provided to the algorithm which used this ... | 2016 | 27655669 |
| wake structure and kinematics in two insectivorous bats. | we compare kinematics and wake structure over a range of flight speeds (4.0-8.2 m s(-1)) for two bats that pursue insect prey aerially, tadarida brasiliensis and myotis velifer body mass and wingspan are similar in these species, but m. velifer has broader wings and lower wing loading. by using high-speed videography and particle image velocimetry of steady flight in a wind tunnel, we show that three-dimensional kinematics and wake structure are similar in the two species at the higher speeds st ... | 2016 | 27528775 |
| differential expression of serotonin, tryptophan hydroxylase and monoamine oxidase a in the mammary gland of the myotis velifer bat. | the mammary gland has long drawn the attention of the scientific community due to the limited knowledge of some fundamental aspects involved in the control of its function. myotis velifer, a microchiropteran species, provides an interesting model to study some of the regulatory factors involved in the control of the mammary gland cycle. having an asynchronous, monoestrous reproductive pattern, female m. velifer bats undergo drastic morphological changes of the breast during the reproductive cycl ... | 2013 | 24086437 |
| serotonin in testes of bat myotis velifer during annual reproductive cycle: expression, localization, and content variations. | the mechanism of reproduction in mammals is very complex and in some cases is quite particular. for example in some bat species, the male presents a reproductive mechanism characterized by an annual testicular cycle that goes from recrudescence to regression (spermatogenesis to inactivity period, respectively). after recrudescence, the spermatozoa arrive at epididymis and wait to be expelled at the time of ejaculation during the mating period, which occurs some months later. because serotonin (5 ... | 2013 | 23666882 |
| cutaneous water loss and lipids of the stratum corneum in two syntopic species of bats. | the lipid matrix of the stratum corneum (sc), the outer layer of the epidermis of mammals and birds, constitutes the barrier to diffusion of water vapor through the skin. the lipids of the sc are structured in the intercellular spaces of the mammalian epidermis in ordered layers, called lamellae, which have been postulated to prevent water loss. lipids in the mammalian sc are mainly cholesterol, free fatty acids and ceramides, the latter forming the structural support for the lamellae. however, ... | 2012 | 22079104 |
| class ii drb polymorphism and sequence diversity in two vesper bats in the genus myotis. | almost no studies have been done with respect to major histocompatibility complex (mhc) polymorphism and sequence diversity in bats, although they account for one in five living mammalian species. we analysed mhc class ii drb polymorphism and sequence diversity in two mexican verpertilionid bat species, the widespread continental species myotis velifer and the narrowly distributed (and endangered) island endemic myotis vivesi. we find extensive drb polymorphism in the widespread m. velifer, simi ... | 2010 | 21182749 |
| continuous 24-hour oxygen consumption studies of myotis velifer. | | 1976 | 3350 |
| a study of hibernating populations of myotis velifer in northwestern texas. | | 1965 | 5838226 |
| timescale and colony-dependent relationships between environmental conditions and plasma oxidative markers in a long-lived bat species. | to increase the applicability and success of physiological approaches in conservation plans, conservation physiology should be based on ecologically relevant relationships between physiological markers and environmental variation that can only be obtained from wild populations. given their integrative and multifaceted aspects, markers of oxidative status have recently been considered in conservation physiology, but still need to be validated across environmental conditions and locations. here, w ... | 2020 | 33173584 |
| presence and diversity of chlamydiae bacteria in spinturnix myoti, an ectoparasite of bats. | chlamydia spp. and chlamydia-like organisms are able to infect vertebrates such as mammals, reptiles and birds, but also arthropods and protozoans. since they have been detected in bats and bat feces, we expected chlamydiae bacteria to also be present in the mite spinturnix myoti, an ectoparasite of mouse-eared bats (myotis spp.). the prevalence of chlamydiales in 88 s. myoti was 57.95% and significantly depended on bat host species. in addition, the prevalence was significantly different betwee ... | 2020 | 33135998 |
| a culture-based id of micromycetes on the wing membranes of greater mouse-eared bats (myotis myotis) from the "nietoperek" site (poland). | bats play important functions in ecosystems and many of them are threatened with extinction. thus, the monitoring of the health status and prevention of diseases seem to be important aspects of welfare and conservation of these mammals. the main goal of the study was the identification of culturable fungal species colonizing the wing membranes of female greater mouse-eared bat (myotis myotis) during spring emergence from the "nietoperek" underground hibernation site by the use of genetic and phe ... | 2020 | 32756314 |
| low seasonal variation in greater mouse-eared bat (myotis myotis) blood parameters. | the greater mouse-eared bat (myotis myotis) is a flagship species for the protection of hibernation and summer maternity roosts in the western palearctic region. a range of pathogenic agents is known to put pressure on populations, including the white-nose syndrome fungus, for which the species shows the highest prevalence and infection intensity of all european bat species. here, we perform analysis of blood parameters characteristic for the species during its natural annual life cycle in order ... | 2020 | 32634149 |
| phagocyte activity reflects mammalian homeo- and hetero-thermic physiological states. | emergence of both viral zoonoses from bats and diseases that threaten bat populations has highlighted the necessity for greater insights into the functioning of the bat immune system. particularly when considering hibernating temperate bat species, it is important to understand the seasonal dynamics associated with immune response. body temperature is one of the factors that modulates immune functions and defence mechanisms against pathogenic agents in vertebrates. to better understand innate im ... | 2020 | 32631329 |
| long-term changes in bat activity in quebec suggest climatic responses and summer niche partitioning associated with white-nose syndrome. | in north america, the greatest and most sudden threat to hibernating bats is white-nose syndrome (wns), which has caused massive declines in populations since 2006. other determinants of bat dynamics, such as the climate, and the effect of reduction in the number of individuals sharing foraging space and summer roosting habitat may have an effect on population dynamics. we analyzed transect acoustic bat surveys conducted with ultrasonic detectors in 16 regions in quebec, canada, between 2000 and ... | 2020 | 32607146 |
| two novel adenoviruses found in cave myotis bats (myotis velifer) in oklahoma. | bats are carriers of potentially zoonotic viruses, therefore it is crucial to identify viruses currently found in bats to better understand how they are maintained in bat populations and evaluate risks for transmission to other species. adenoviruses have been previously detected in bats throughout the world, but sampling is still limited. in this study, 30 pooled-guano samples were collected from a cave roost of myotis velifer in oklahoma. a portion of the dna polymerase gene from adenoviridae w ... | 2020 | 31797220 |
| immune response of hibernating european bats to a fungal challenge. | immunological responses of hibernating mammals are suppressed at low body temperatures, a possible explanation for the devastating effect of the white-nose syndrome on hibernating north american bats. however, european bats seem to cope well with the fungal causative agent of the disease. to better understand the immune response of hibernating bats, especially against fungal pathogens, we challenged european greater mouse-eared bats (myotis myotis) by inoculating the fungal antigen zymosan. we m ... | 2019 | 31649120 |
| winter habitats of bats in texas. | few studies have described winter microclimate selection by bats in the southern united states. this is of particular importance as the cold-adapted fungus, pseudogymnoascus destructans, which causes the fatal bat disease white-nose syndrome (wns), continues to spread into southern united states. to better understand the suitability of winter bat habitats for the growth of p. destructans in this region, we collected roost temperature and vapor pressure deficit from 97 hibernacula in six ecoregio ... | 2019 | 31393965 |
| frequent or scarce? damage to flight-enabling body parts in bats (chiroptera). | bat wings are characterized by high endurance, and these mammals have developed a number of adaptations that protect them from falling into obstacles and potential injuries. however, in bat populations, there are individuals with visible fresh or healed injuries to the flight-enabling body parts. the aim of this research was to determine the differences in the occurrence of wing membrane damages among species of bats that differ in ecology and behavior. the study was conducted in southern and we ... | 2019 | 31329631 |
| numerous cold arousals and rare arousal cascades as a hibernation strategy in european myotis bats. | hibernating bats optimise the duration of torpor bouts and arousals in relation to hibernaculum microclimatic conditions and fat reserves. clustering has significant physiological and ecological benefits, promoting successful hibernation of individuals. such aggregations may help maintain optimal temperatures, allowing better energy utilisation than in solitarily bats. however, aroused bats in a cluster could conceivably disturb those still hibernating, starting an energy-demanding arousal proce ... | 2019 | 31128642 |
| bartonella and rickettsia infections in haematophagous spinturnix myoti mites (acari: mesostigmata) and their bat host, myotis myotis (yangochiroptera: vespertilionidae), from poland. | hematophagous spinturnix myoti mites and their host, the greater mouse-eared bat (myotis myotis), were tested for the presence of bartonella spp., rickettsia spp., and anaplasma phagocytophilum. in total, bartonella spp. dna was amplified in 28% of 134 mite pools and in 25% of 59 bats tested by pcr targeting a fragment of citrate synthase glta gen. adult mites were at least threefold more frequently infected compared to immature stages. the overall infection prevalence among mite pools from cave ... | 2019 | 30151669 |
| alterations in the health of hibernating bats under pathogen pressure. | in underground hibernacula temperate northern hemisphere bats are exposed to pseudogymnoascus destructans, the fungal agent of white-nose syndrome. while pathological and epidemiological data suggest that palearctic bats tolerate this infection, we lack knowledge about bat health under pathogen pressure. here we report blood profiles, along with body mass index (bmi), infection intensity and hibernation temperature, in greater mouse-eared bats (myotis myotis). we sampled three european hibernacu ... | 2018 | 29666436 |
| mitigating the negative impacts of tall wind turbines on bats: vertical activity profiles and relationships to wind speed. | wind turbines represent a source of hazard for bats, especially through collision with rotor blades. with increasing technical development, tall turbines (rotor-swept zone 50-150 m above ground level) are becoming widespread, yet we lack quantitative information about species active at these heights, which impedes proposing targeted mitigation recommendations for bat-friendly turbine operation. we investigated vertical activity profiles of a bat assemblage, and their relationships to wind speed, ... | 2018 | 29561851 |
| reduction of emission level in approach signals of greater mouse-eared bats (myotis myotis): no evidence for a closed loop control system for intensity compensation. | bats lower the emission spl when approaching a target. the spl reduction has been explained by intensity compensation which implies that bats adjust the emission spl to perceive the retuning echoes at the same level. for a better understanding of this control mechanism we recorded the echolocation signals of four myotis myotis with an onboard microphone when foraging in the passive mode for rustling mealworms offered in two feeding dishes with different target strength, and determined the reduct ... | 2018 | 29543882 |
| prenatal development in greater mouse-eared bat, myotis myotis (borkhausen, 1797) (chiroptera, vespertilionidae). | order chiroptera is the second largest mammal group after rodents. an understanding of the development of the bats, which is a very special mammal group in terms of their lifestyles, morphology and their ability to fly, is very important because most of the adult anatomical differences characterizing species occur during organogenesis. in this study, developmental stages were determined for myotis myotis species based on external morphological characteristics from embryos obtained from wild-caug ... | 2017 | 28984378 |
| the other white-nose syndrome transcriptome: tolerant and susceptible hosts respond differently to the pathogen pseudogymnoascus destructans. | mitigation of emerging infectious diseases that threaten global biodiversity requires an understanding of critical host and pathogen responses to infection. for multihost pathogens where pathogen virulence or host susceptibility is variable, host-pathogen interactions in tolerant species may identify potential avenues for adaptive evolution in recently exposed, susceptible hosts. for example, the fungus pseudogymnoascus destructans causes white-nose syndrome (wns) in hibernating bats and is resp ... | 2017 | 28944007 |