Microtus obscurus, Arvicola arvensis, Microtus angularis, Microtus asturianus, Microtus brevirostris, Arvicola campestris, Arvicola cunicularius, Lemmus fulvus, Microtus hyrcania, Arvicola incertus, Arvicola mystacinus, Hypudaeus obscurus, Microtus orcadensis, Microtus sarnius, Microtus terrestris, Arvicola vulgaris, Mus arvalis albus, Arvicola arvalis assimilis, Arvicola arvalis ater, Microtus arvalis calypsus, Microtus arvalis cimbricus, Arvicola arvalis contigua, Arvicola arvalis depressa, Arvicola arvalis duplicatus, Arvicola arvalis flava, Arvicola arvalis fulva, Arvicola arvalis galliardi, Microtus arvalis gudauricus, Microtus arvalis hawelkae, Microtus arvalis incognitus, Microtus arvalis iphigeniae, Microtus arvalis khorkoutensis, Microtus arvalis macrocranius, Microtus arvalis meridianus, Arvicola arvalis principalis, Microtus orcadensis ronaldshaiensis, Microtus orcadensis rousiensis, Microtus orcadensis sandayensis, Arvicola arvalis simplex, Microtus arvalis transcaucasicus ...
The authors investigated the effects of postnatal manipulations of oxytocin (OT) on the subsequent tendency to form a partner preference in male prairie voles (Microtus ochrogaster). Neonatally, males received either an injection of OT, an oxytocin antagonist (OTA), 0.9% saline vehicle, or handling without injection. As adults, males were tested for partner preference
This study compared the effects of centrally administered oxytocin (OT) and arginine vasopressin (AVP) on partner preference formation and social contact in male and female prairie votes (Microtus ochrogaster). After 1 hr of cohabitation and pretreatment with either AVP or OT, both males and females exhibited increased social contact and significant preference for the familiar partner. After pretreatment with either an OT receptor antagonist (OTA) or an AVP (V1a) receptor antagonist (AVPA), neither OT nor AVP induced a partner preference.
Many female terrestrial mammals undergo postpartum estrus (PPE), a state of heightened sexual attractiveness to male conspecifics relative to females not in PPE (REF females). PPE and REF females of several species may use over-marks to maintain territories and attract and indicate interest in males as potential mates. In our first two experiments, we determined if the response of male meadow voles, Microtus pennsylvanicus, to the top- and bottom-scent donors of a same-sex over-mark was affected by the reproductive state of the scent donors. We found that after exposure to a same-sex over-mark in which the female scent donors were in the same reproductive state, males spent more time investigating the mark of the top-scent female. Males, however, spent more time investigating the mark of the PPE female to that of a female not in PPE, independent of the position of either females scent mark in the over-mark. The third and fourth experiments determined if the response of males to the female scent donor
1.1 The monogamous prairie vole. Monogamous (prairie vole) versus Polygynous (all others -- ex. meadow vole) WHY?. 1.2 The brain of the prairie vole is a complex, highly organized machine. Vasopressin - large number of receptors (V1a) in Ventral pallium - (emotion and memory)...
Differential predation on certain classes of individuals within prey populations might make owls strong selective agents on their prey. We investigated selective predation of tawny owls (Strix aluco) on yellow-necked mice (Apodemus flavicollis, A.f.) and bank voles (Myodes glareolus, M.g.) for two years by comparing prey from owl nests with live-trapped individuals. The owls killed significantly more male M.g. (73%) than females, but not more than expected from traps (57%). For A.f., owls selected adults in favour of subadults, and for adults, individuals with longer femurs. Adult males of A.f. killed by owls had significantly heavier testes in relation their size than the trapped males. Prey selection did not correlate with size-adjusted body or spleen mass. Owl-killed A.f. had higher prevalences of the intestinal helminth Heligmosomoides sp. than trapped individuals, but hosted similar numbers of parasite species. Differential predation of tawny owls on yellow-necked mice and bank voles seems ...
All sections of watercourse with level ground or a gentle slope (,3% gradient) within the NNR were included in the survey. The banks of each watercourse were surveyed and signs of water vole activity were noted. Where access and water depth allowed, the search was conducted from the channel itself. Water vole signs separated by less than 200 m within one watercourse were considered to be within one colony, as adult males are known to have a home range of up to 200 m (Capreolus 2005; Sah 1998). Water vole habitat was assessed longitudinally as a series of contiguous survey sections. For the purposes of recording, habitat section breaks were inserted where the habitat type changed significantly. If habitat remained uniform section breaks were created approximately every 200 m. Each survey section was ranked in one of three categories: optimal (O), sub-optimal (SO) or unsuitable (US) water vole habitat ...
Two strains of Gram-positive cocci were isolated from viscera of common voles (Microtus arvalis Pallas) with generalized Brucella microti infection in the Czech Republic. Biochemical features and phylogenetic analysis based on 16S rRNA gene sequences showed that the strains are representatives of the genus Staphylococcus and assigned Staphylococcus muscae as the nearest relative. A detailed characterization done by ribotyping, rpoB and hsp60 gene sequencing, whole-cell protein analysis and rep-PCR using the (GTG)5 primer differentiated the two strains from all described staphylococci. DNA-DNA hybridization with the type strain of S. muscae demonstrated that the two strains should be considered as members of a novel species (26.8 % reassociation). The two analysed strains were found to be coagulase-negative, novobiocin-susceptible, oxidase-negative cultures, phenotypically close to one another, but showing differences in ribotype profiles. The major fatty acids were iso-C15 : 0, iso-C17 : 0, anteiso-C15
I have, in this thesis, studied the interactions between gray-sided voles (Clethrionomys rufocanus) and tundra vegetation, on islands in, and mainland sites close to the lake Iešjávri, in northern Norway. As isolated islands are virtually free of predation, I have been able to compare plant-herbivore interactions in the presence and absence of predators. I transplanted vegetation from an island with predators and voles, to predator-free islands with and with out voles. The results reveal the existence of a terrestrial trophic cascade as voles had a severe impact on the transplanted vegetation on the predator-free islands, but only minor effects on the mainland where predators are present. Moreover, this study shows that plant defence was only a successful strategy when predators were present. Voles reduced the abundance of all available plants during winter on the predator-free islands. The results imply that cascading effects of predation are most important for well-defended plants with ...
Much interest has centred recently on the role of adaptive trade-offs between the immune system and other components of life history in determining resistance and parasite intensities among hosts. Steroid hormones, particularly glucocorticoids and sex steroids, provide a plausible mechanism for mediating such trade-offs. A basic assumption behind the hypothesis, however, is that steroid activity will generally correlate with reduced resistance and thus greater parasite intensities. Here, we present some findings from a field study of bank voles (Clethrionomys glareolus ) in which we have looked at associations between parasite intensities, anatomical and morphometric measures relating to endocrine function and life history variation in three local populations inhabiting similar but mutually isolated woodland habitats. In general, sites with greater parasite intensities were those in which male C. glareolus had significantly larger adrenal glands, testes and seminal vesicles for their age and ...
Grasslands are among the most imperiled of the North American ecosystems, with ≤ 1% of tallgrass prairie remaining. The State Acres for Wildlife Enhancement (SAFE) is a national conservation program that converts agricultural fields into grasslands with the primary focus on improving habitat for high priority wildlife species. Because small mammals can be important indicators of ecosystem function, I sampled small mammal communities to evaluate restoration efforts under the SAFE program in Illinois. I livetrapped small mammals during 3 summers (2009-2011) on plots that were recently seeded, seeded 1-4 years prior to sampling, or established references (>10 yrs old). Overall, the dominant species were the deer mouse (Peromyscus maniculatus), prairie vole (Microtus ochrogaster), and meadow vole (Microtus pennsylvanicus); which combined represented 92-97% of total captures each year. Typical restoration trajectories for small mammal communities included a shift over time from dominance by ...
Cervidae: Alces americanus (American Moose) [feeds on the foliage of these grasses from Maine to Michigan during the summer] MZN1951, Cervus canadensis (Elk) [foliage provides 1% of the diet] SMA2006; Cricetidae: Microtus ochrogaster (Prairie Vole) [feeds on these grasses] MZN1951, Microtus pennsylvanicus (Meadow Vole) [feeds on these grasses] MZN1951; Leporidae: Sylvilagus floridanus (Eastern Cottontail) [foliage comprises 5-10% of the diet in Connecticut throughout the year, foliage comprises 0.5-2% of the diet in Ohio] MZN1951 ...
Synaptic pruning within neurons in the brain during development allows for maintenance of proper neuronal connections and the elimination of aberrant ones. Rapid eye movement (REM) sleep is critical for pruning and maintaining new synapses formed during both development and learning. We hypothesize that disrupting REM sleep early in life will result in long lasting changes in synaptic density in cortical brain regions. The prefrontal cortex (PFC) is a late-maturing region that modulates higher order social and cognitive functions. Abnormally high dendritic spine density in the PFC is implicated in neurodevelopmental disorders such as autism spectrum disorder (ASD). Emerging research in our lab suggests that selectively suppressing REM sleep early in life in the socially monogamous prairie vole (Microtus ochrogaster) impairs social development and increases inhibitory interneurons in the PFC, consistent with ASD pathology. Using Golgi-Cox staining in adult prairie vole post-mortem tissue, we quantified
Boletus pinetorum is similar to B. edulis, but it has a greyish brown pileus with a wrinkled edge, and grows with Pinus. The caulocystidia of B. pinetorum are lageniform vs. the cylindrical caulocystidia in B. edulis. Boletus pinophilus is also associated with pines but it usually has vinaceous red tinted pileus and mostly cylindrical caulocystidia.. Habitat. Dry sandy pine heaths and dry coniferous forests, mycorrhizal with pines (Pinus).. Distribution. Not yet understood and so far known only in Norway, Finland and Estonia.. Photographs. I am not currently having photographs of this species. Colour photographs and line drawings of the microscopic features are found in Korhonen & al. (2009).. Important literature. Korhonen, M., Liimatainen, K. & Niskanen, T. 2009. A new boletoid fungus, Boletus pinetorum, in the Boletus section Boletus from Fennoscandia (Basidiomycota, Boletales). - Karstenia 49: 41-60.. ...
To get a deeper insight into the function of estrogen-related receptors (ERRs) and dissect underlying mechanism in Leydig cells, ERRs (type α, β and γ) were blocked or activated in testes of adult bank voles (Myodes glareolus) which show seasonal changes in the intratesticular sex hormones level. Both actively reproducing animals (long day conditions; LD) and those with regression of the reproductive system (short day conditions; SD) received intraperitoneal injections of selective ERRα antagonist 3-[4-(2,4-Bis-trifluoromethylbenzyloxy)-3-methoxyphenyl]-2-cyano-N-(5-trifluoromethyl-1,3,4-thiadiazol-2-yl)acrylamide (XCT 790) or selective ERRβ/ERRγ agonist N-(4-(Diethylaminobenzylidenyl)-N-(4-hydroxybenzoyl)-hydrazine (DY131) (50 μ/kg bw; six doses every other day ...
The sibling vole is an accidentally introduced species in Svalbard and is the only small mammal species on the archipelago. They were first discovered in 1960 and misidentified as the common vole Microtus arvalis.
Not all of the experiences in nature and moments spent with animals can be labelled with name „expedition". I decided to post the one most interesting photo every month to describe a particular moment. The May will be represented by the close observation of the bank vole (Myodes glareolus) in the Beskydy mountains near Nový Hrozenkov. This young animal behaved very friendly and had no problem with photographing from a very small distance. What a nice encounter! ...
The water vole (Arvicola amphibius) in the forest-steppe of West Siberia is known to have wide fluctuations in abundance. These fluctuations are accompanied by changes in birth and death rates, sex-age structure of the population, and individual morphophysiological and behavioral characteristics of the animals. Survival of the animals depends on season, phase of population cycle, and sex. Based on the data of long-term captive breeding of water voles, the maximal lifespan of males was found to be 1188 days and that of females, 1108 days. There were no differences between the sexes in mean lifespan. The probability of living 2 years or longer was 0.21. Individuals who began breeding at an older age had a significantly longer lifespan and produced more offspring. The survival curves of the spring-born animals were steeper than of those summer/autumn-born. Maternal factors had differential effect on males and females with respect to lifespan. Male lifespan correlated negatively with maternal age, parity,
We were able to show that bank vole females gained long-term fitness benefits from multiple mating with different males. Offspring of polyandrous females performed significantly better at reproduction than those of monandrous females, caused mainly by sons of polyandrous females producing more offspring than those of monandrous females. Offspring body mass and survival were not affected by mating treatment. To our knowledge, this is the first experimental study on mammals measuring offspring reproductive performance as fitness component potentially affected by polyandry.. Recent studies have demonstrated an increase in female fitness due to polyandry that can be attributed to genetic effects (Neff & Pitcher 2005; Simmons 2005). Most of these studies, including two on mammals, have focused on early offspring survival as a component of fitness. For example, a field study on the brown antechinus Antechinus stuartii showed that polyandry significantly increased offspring survival until weaning ...
The purpose of this study was to determine whether pretreatment with oxytocin could mimic the effects of social contact and enhance sexual receptivity in female prairie voles. Female prairie voles req...
Florida Salt Marsh Vole Microtus pennsylvanicus dukecampbelli Status Endangered Listed January 14, 1991 Family Muridae (Mouse and Rat) Description Short-tailed rodent with a blunt head and short ears.
The role of oxytocin at the interface of stress and social behavior in the socially monogamous prairie vole Yee and colleagues examined the role of oxytocin at the interface of stress and social behavior in the socially monogamous prairie vole.
The best distribution models provided good predictions of the present-day Siberian ranges of the study species. Their LGM projections showed that areas with a suitable LGM climate for the three temperate species (Apodemus flavicollis, Apodemus sylvaticus and Microtus arvalis) were largely restricted to the traditionally recognized southern refuge areas, i.e. mainly in the Mediterranean region, but also southernmost France and southern parts of the Russian Plain. In contrast, suitable climatic conditions for the two boreal species (Clethrionomys glareous and Microtus agrestis) were predicted as far north as southern England and across southern parts of central and eastern Europe eastwards into the Russian Plain. For the two arctic species (Lemmus lemmus and Microtus oeconomus), suitable climate was predicted from the Atlantic coast eastward across central Europe and into Russia. Main conclusions ...
The crash phase of vole populations with cyclic dynamics regularly leads to vast areas of uninhabited habitats. Yet although the capacity for cyclic voles to re-colonize such empty space is likely to be large and predicted to have become evolved as a distinct life history trait, the processes of colonization and its effect on the spatio-temporal dynamics have been little studied. Here we report from an experiment with root voles (Microtus oeconomus) specifically targeted at quantifying the process of colonization of empty patches from distant source patches and its resultant effect on local vole deme size variation in a patchy landscape. Three experimental factors: habitat quality (1), predation risk (2) and inter-patch distance (3) were employed among 24 habitat patches in a 100x300 m experimental area. The first born cohort in the spring efficiently colonized almost all empty patches irrespective of the degree of patch isolation and predation risk, but dependent on habitat quality. Just after ...
Variation at 21 allozyme loci and 10 restriction enzymes within the mitochondrial DNA control region was assessed among 3 allopatric populations of montane vole (Microtus montanus) in the American Southwest. Among populations of M. montanus, the population from the White Mountains, Arizona, was most genetically divergent. Genetic and biogeographic evidence supported recognition of the White Mountains population as a distinct subspecies, M. m. arizonensis. Results also supported recognition of the Mogollon vole (Microtus mogollonensis) as distinct from the Mexican vole (Microtus mexicanus).
Merryl is a zoologist and professional ecologist who has worked on a wide range of British mammals over the past 20 years. As well as being Honorary Secretary for the Mammal Society, Merryl founded the Oxfordshire Mammal Group and is Director and Principal Ecologist at Spires Ecology. Recently, much of her work focuses on protected species, with an emphasis on water voles, and in bridging the gap between research and the practical application of results in real-life situations. Merryl has significant experience in the provision of training in live-capture techniques for a variety of species and now runs the Mammal Society water voles live-capture and mitigation course aimed at professional ecologists. Merryl completed her doctorate at the Wildlife Conservation Research Unit (WildCRU, Oxford University) on health and welfare in reintroductions, using water voles as a model species, and has numerous publications on the topic, as well as co-authoring the latest version of the Water Vole ...
I am not an adept when it comes to identifying skulls and bones that were festering in owl pellets, but I know the parts in Carma Jos pellet were from small rodents. The primary victim was probably the hapless beast hanging here, the Meadow Vole, Microtus pennsylvanicus. Do yourself a favor: never come back as a vole. Everyone wants to eat you, and the end will not be pretty. Very few voles, I suspect, die of old age. The animal in this photo was harvested by a Northern Shrike, which unceremoniously hung it in this autumn-olive bush. We saw almost the whole thing go down, and it was cool! The shrike, or butcherbird, came lumbering in toting the vole, disappeared into the shrubs, and as soon as the bird left we dashed in to inspect the kill. Later, the shrike, which is essentially a feathered Vlad the Impaler, would have returned and torn the cute little critter apart, gobbling down the chunks ...
The name vole is short for the archaic word volemouse, which may come from Norwegian vollmus, from the Old Norse völlr, field and Old Norse mūs, mouse. Voles are rodents, in the same family (Crecetidae) as lemmings, and like lemmings they sometimes have population explosions. The field vole, Arvicola agrestis, was so plentiful in Scotland, causing so much damage in 1890-1 that the Government appointed a Committee to examine the question. The committee wondered whether the destruction of predators by gamekeepers was responsible, but in true Darwinian fashion, the Scottish outbreak was dealt with by a rapid natural increase in the population of birds of prey.[1] A more recent vole explosion permitted snowy owls to colonise and breed in the Shetland Islands for a number of years. Voles range in color from gray to brown and in size from three to nine inches long. They have rounded bodies and blunt snouts, small ears and short tails without much hair. Their main food is grasses, but they also eat ...
Elucidating the colonization processes associated with Quaternary climatic cycles is important in order to understand the distribution of biodiversity and the evolutionary potential of temperate plant and animal species. In Europe, general evolutionary scenarios have been defined from genetic evidence. Recently, these scenarios have been challenged with genetic as well as fossil data. The origins of the modern distributions of most temperate plant and animal species could predate the Last Glacial Maximum. The glacial survival of such populations may have occurred in either southern (Mediterranean regions) and/or northern (Carpathians) refugia. Here, a phylogeographic analysis of a widespread European small mammal (Microtus arvalis) is conducted with a multidisciplinary approach. Genetic, fossil and ecological traits are used to assess the evolutionary history of this vole. Regardless of whether the European distribution of the five previously identified evolutionary lineages is corroborated, this
This thesis deals with the dynamics of tundra living voles with emphasis on the most common one, the grey-sided vole (Clethrionomys rufocanus). The tundra area chosen for the study was Finnmarksvidda, a vast flatland in northernmost Norway. All small mammal herbivores in the area showed dramatic fluctuations, and field experiment were conducted in order to elucidate these density fluctuations. The specific subjects addressed included: 1/ Temporal and spatial appearance of density fluctuations of voles and lemmings in the area, 2/ The generality of the density patterns observed, 3/ The impact of predation by vole predators during summertime, 4/ The impact of grey-sided vole grazing on food plants of different preference in a predator free environment, in the presence and absence of extra food, and 5/ The impact of food availability on density and demography of grey-sided voles in a predator free environment.. The results achieved showed that voles in the slope and lowland had cyclic density ...
Background Chemical communication in mammals involves globular lipocalins that protect and transport pheromones during their passage out of the body. Efficient communication via this protein -...
1. Mathematical models for infectious diseases typically use contact rates (e.g. the number of other people a person encounters per day) as one of their main elements in predicting the outcomes of an epidemic. The aim of my project is to investigate the importance of spatial constraints and individual heterogeneity on the rate of contact of wildlife using field voles (Microtus agrestis) as a case study. By spatial constraints, I mean the importance that spatial distance plays in the rate of contact. Furthermore by individual heterogeneity, I mean the importance of characteristics such as mass and sex in determining the rate of contact.. We intuitively know that the further apart two individuals/voles are from each other, the harder it would be for a pathogen to spread. But how far is far? Incorporating these spatial constraints into the rate of contact models would help us investigate this. Studying characteristics such as mass and sex would help us investigate the features of dominant hubs in ...
New research suggests prairie voles are most comfortable when packed into close quarters, surrounded by their friends and family.
I feel the problems and damage from these Meadow Voles is one of the least understood or reported problems in the Willamette Valley of Oregon - at least for the Home Orchardist. Out of sight - out of mind is likely the reaction of most. I may have mentioned in this thread walking an orchard last year and listening to the owners describe how poorly their 8 to 10 year old fruit trees were doing. They were stunned as I pointed out the vole hole-riddled ground around their most sickly ...
I feel the problems and damage from these Meadow Voles is one of the least understood or reported problems in the Willamette Valley of Oregon - at least for the Home Orchardist. Out of sight - out of mind is likely the reaction of most. I may have mentioned in this thread walking an orchard last year and listening to the owners describe how poorly their 8 to 10 year old fruit trees were doing. They were stunned as I pointed out the vole hole-riddled ground around their most sickly ...
The ovarian steroids, 17-beta estradiol (E2) and progesterone (P4), are critical for normal uterine function, establishment and maintenance of pregnancy, and mammary gland development. Furthermore, the local effects that are essential for normal ovarian physiology are dependent on the endocrine, paracrine, and autocrine actions of E2, P4, and androgens. In most mammals (including humans and mice), ovarian steroidogenesis occurs according to the two-cell/two-gonadotropin theory. This theory describes how granulosa and theca cells work together to make the ovarian steroids. Theca cells respond to LH signaling by increasing the expression of enzymes necessary for the conversion of cholesterol to androgens, such as androstenedione (A) and testosterone (T). Granulosa cells respond to FSH signaling by increasing the expression of enzymes necessary for the conversion of theca-derived androgens into estrogens (E2 and estrone ...
ananyo writes Researchers have shown for the first time that the act of mating induces permanent chemical modifications in the chromosomes (epigenetic changes), affecting the expression of genes that regulate sexual and monogamous behavior in prairie voles. Prairie voles have long been of interest ...
p>The checksum is a form of redundancy check that is calculated from the sequence. It is useful for tracking sequence updates.,/p> ,p>It should be noted that while, in theory, two different sequences could have the same checksum value, the likelihood that this would happen is extremely low.,/p> ,p>However UniProtKB may contain entries with identical sequences in case of multiple genes (paralogs).,/p> ,p>The checksum is computed as the sequence 64-bit Cyclic Redundancy Check value (CRC64) using the generator polynomial: x,sup>64,/sup> + x,sup>4,/sup> + x,sup>3,/sup> + x + 1. The algorithm is described in the ISO 3309 standard. ,/p> ,p class="publication">Press W.H., Flannery B.P., Teukolsky S.A. and Vetterling W.T.,br /> ,strong>Cyclic redundancy and other checksums,/strong>,br /> ,a href="http://www.nrbook.com/b/bookcpdf.php">Numerical recipes in C 2nd ed., pp896-902, Cambridge University Press (1993),/a>),/p> Checksum:i ...
Dr Young has found that one difference between monogamous prairie voles and promiscuous montane voles is in the distribution of vasopressin and oxytocin receptors in the brain. His hypothesis is that if the receptors are not expressed in certain areas, then smell and sex will no longer coordinate to form social memory. Hence, when a montane vole mates, it does not form a lasting bond with its partner and is therefore unrestrained when encountering a different potential mate. (This hypothesis is strongly supported by a wealth of pharmacological and genetic data, which I wont go into-unless asked ...
Musser, G. G. and M. D. Carleton. 2005. Superfamily Muroidea. pp. 894-1531 in Mammal Species of the World a Taxonomic and Geographic Reference. D. E. Wilson and D. M. Reeder eds. Johns Hopkins University Press, Baltimore ...
With the onset of fall?s cool weather, animals are making plans to overwinter in your yard. Voles are one of the main rodents that love to hang around and feed. There are many species. Some will tunnel underground to feed on plant roots and bulbs. Others will stay near the surface to feed on shrub and tree bark and grass roots. Whatever the type, voles can wreak havoc on your plants. There is a new product that will bait and trap them to reduce their numbers while being safe for other animals. The Vole Control Bait Station contains a fruit-based poison bait that the voles love to eat. It can be set up as a ?tent? station among your plants to control aboveground voles, or as a ?mulch? station, buried under mulch to control belowground voles. The station is designed to attract only voles, and the poison bait is kept hidden and dry so children and other animals can?t reach it. Simply set up the station in an area where voles are active and check every few days to see if the bait has been taken or ...
The prairie vole is one of the few species in nature that is monogamous and that creates deep social bonds while mating. The basic mechanisms of voles and humans social learning are similar enough that the learning that occurs during voles pair bonding can model complex human social interactions. Young and his colleagues have used voles to show the importance for social interactions of hormones such as oxytocin, which has also been proposed as a treatment for autism spectrum disorders ...
Co-evolutionary changes in species may reverse traditional predator-prey population cycles, creating the appearance that prey are eating the predators, according to a study to be published in the journal Proceedings of the National Academy of Sciences
Bajer, Anna and Bednarska, M. and Pawelczyk, A. and Behnke, Jerzy M. and Gilbert, Francis S. and Sinski, Edward (2002) Prevalence and abundance of Cryptosporidium parvum and Giardia spp. in wild rural rodents from the Mazury Lake District region of Poland. Parasitology, 125 (1). pp. 21-34. ISSN 0031-1820 Barnard, C.J. and Behnke, J.M. and Bajer, A. and Bray, D. and Race, T. and Frake, K. and Osmond, J. and Dinmore, J. and Sinski, E. (2002) Local variation in endoparasite intensities of bank voles (Clethrionomys glareolus )from ecologically similar sites: morphometric and endocrine correlates. Journal of Helminthology, 76 (2). pp. 103-112. ISSN 0022-149X Barrett, John W. (2002) Geometrical measurements in three-dimensional quantum gravity. Bayraktutan, Ulvi (2002) Free radicals, diabetes and endothelial dysfunction. Diabetes Obesity and Metabolism, 4 . pp. 224-238. Blake, Holly and McKinney, Michelle and Treece, Karen and Lee, Elizabeth and Lincoln, Nadina (2002) An evaluation of screening ...
Daily News Thousands of Mutations Accumulate in the Human Brain Over a Lifetime Single-cell genome analyses reveal the amount of mutations a human brain cell will collect from its fetal beginnings until death.. ...
ive been reading a bit on rabbits and am interested in the population cycles - does anyone know more about this. Does diffrent stretches of habitat have diffrent cycles? Or does an entire area / the whole state go through a high low cycle at the same time? And if so does anyone know where we are at this year --- I have seen lots of rabbits this year! Thanks - t
Monitoring of montane water vole populations on the Jura plateau during the phases of a demographic cycle: relative densities, reproduction parameters, weight, relative age (crystalline weight), and microbial community composition. Those data have been collected in the framework of Petra Villettes .... ...
Species differences in ligand binding to Avpr1a have been associated with variation in a polymorphic microsatellite in the non-coding 5′-flanking region of the vole Avpr1a locus (Hammock et al., 2005; Hammock and Young, 2004; Hammock and Young, 2005). Furthermore, differences in microsatellite structure within the prairie vole species have been associated with variation in pair-bonding behavior between individual animals (Hammock and Young, 2002; Hammock and Young, 2004). The proximal 5′-flanking region of the Avpr1a gene is not the only factor to direct species-typical expression profiles as transgenic mice in which homologous recombination was used to replace 3.5 kb of the murine Avpr1a proximal 5′-flanking region with the homologous prairie vole sequence expressed Avpr1a largely in a mouse pattern, indicating that more distal chromosomal elements are necessary to confer species-specific expression patterns (Donaldson and Young, 2013).. As in rodents, analogous polymorphic regions ...
Kalscheuer, V.; Singh, A. P.; Nanda, I.; Sperling, K.; Neitzel, H.: Evolution of the gonosomal heterochromatin of Microtus agrestis: rapid amplification of a large, multimeric, repeat unit containing a 3.0-kb (GATA)11-positive, middle repetitive element. Cytogenet Cell Genet 73 (3), pp. 171 - 8 (1996 ...
Slightly larger than M. mystacinus, it has a wingspan of 190 - 240 mm with relatively long ears and a long, light brown fur. For this species, mixed/broadleaf forests and water sources of high importance. Compared to other species, it is not so often found near human settlements. During summer it roosts in tree holes and trunk cracks, while in winter it chooses to hibernate in caves and mines. Tree lines and hedges are part of the species hunting grounds. In these locations, and similarly to M. mystacinus, it uses aerial hawking to catch its prey. This species is an occasional migrant but the distances covered are usually no higher than 40 km.. ...