| light and electron microscope studies on the sarcocystis of rattus fuscipes, an australian rat. | light and electron microscope studies on the sarcocystis of rattus fuscipes showed that sarcocysts of two types occurred in this rat. these types could be distinguished from each other on the morphology of their cyst walls, on the size and micromorphology of their zoites, as well as by the changes they induced in the host cell. on the basis of these differences, it was concluded that the two sarcocyst types belonged to distinct sarcocystis species. the possible life histories of the infections o ... | 1976 | 822623 |
| lowered adrenal responsiveness in an island population of rattus fuscipes (waterhouse), an australian rodent. | | 1977 | 892405 |
| introduction of a brachylaima species (digenea: brachylaimidae) to australia. | a brachylaima species recorded previously from the house mouse (mus domesticus) in south australia is shown to use the introduced european snails cernuella virgata and cochlicella barbara as first intermediate hosts, and the same two species and theba pisana as second intermediate hosts. the life cycle is typical of brachylaima species. the parasite is capable of infecting at least two species of native australian rodent, rattus fuscipes and leporillus conditor. because of the intermediate hosts ... | 1990 | 2242962 |
| crystalloid formation in leydig cells of rats (rattus fuscipes). an ultrastructural and hormonal study. | the ultrastructure of leydig cells in a seasonally breeding rodent, rattus fuscipes, was studied in the breeding and non-breeding season and compared with leydig cell morphology after suppression of gonadotrophin secretion induced by hypophysectomy or chronic administration of testosterone. serum luteinizing hormone (lh) and testosterone (t) were measured and in-vitro t production by testes was assessed by stimulation with human chorionic gonadotrophin (hcg). in non-breeding wild-trapped rats an ... | 1986 | 3731253 |
| the ecological significance of thermoregulatory responses to heat stress shown by two populations of an australian murid, rattus fuscipes. | | 1973 | 4145517 |
| agglutination of african primate and rodent erythrocytes by adenoviruses, reoviruses, and enteroviruses. | african nonhuman primate and rodent erythrocytes were tested for agglutination by adenoviruses, reoviruses, and enteroviruses. squirrel erythrocytes were agglutinated by reovirus serotypes and adenovirus types 3, 11, 16, and 21. adenoviruses also agglutinated brazza monkey erythrocytes to the same titers as those obtained with either rhesus or grey monkey cells. prototype reovirus types 1 and 2 agglutinated grey monkey erythrocytes to much lower titers than either squirrel or human group o red c ... | 1972 | 4631106 |
| seasonally and experimentally induced changes in testicular function of the australian bush rat (rattus fuscipes). | serum concentrations of lh, fsh and testosterone were measured monthly throughout the year in male bush rats. testicular size and ultrastructure, lh/hcg, fsh and oestradiol receptors and the response of the pituitary to lhrh were also recorded. lh and fsh rose in parallel with an increase in testicular size after the winter solstice with peak gonadotrophin levels in the spring (september). the subsequent fall in lh and fsh levels was associated with a rise in serum testosterone which reached pea ... | 1984 | 6422037 |
| various hosts of ctenocephalides felis strongylus. | infestation of exotic and indigenous breeds of cattle, sheep and goats with ctenocephalides felis strongylus in a dairy farm is reported. many of the fleas were engorged with fresh blood. traps set up in the pens caught two bush rats which were heavily infested with the same flea species, most of which were also engorged with fresh blood. it was suggested that the fleas might have been introduced into the pens by rodents such as bush rats. | 1982 | 7168133 |
| supernumerary chromosomes and their possible origin in the karyotype of indian bush rat, golunda ellioti gujerati. | the incidence of supernumerary chromosomes has been frequently observed in one of the subspecies of indian bush rat, golunda ellioti gujerati thomas 1923. their number varied from 1 to 4 with consistent number of supernumeraries in each individual specimen. a possible explanation is given towards the origin of supernumerary chromosomes in golunda ellioti gujerati. two acrocentric chromosomes can give rise to a single large acrocentric and a supernumerary chromosome. this can happen by separation ... | 1981 | 7194151 |
| the prevalence of anti-leptospiral agglutinins in sera of wildlife in southeastern australia. | anti-leptospiral agglutinins were found in the serum from 18 (7 species) of 419 (25 species) animals sampled from various areas of southeastern australia. positive serologic reactions were observed in 5 of 25 (20%) brush-tailed possum (trichosurus vulpecula), 1 of 26 (3.8%) tammar wallaby (macropus eugenii), 2 of 12 (16.7%) swamp wallaby (wallabia bicolor), 1 of 3 (33.3%) koala (phascolarctos cinereus), 3 of 41 (7.3%) common wombat (vombatus ursinus), 2 of 100 (2%) bush rat (rattus fuscipes) and ... | 1981 | 7241704 |
| prevalence of fasciola hepatica infection in native mammals in southeastern australia. | fasciola hepatica infection was found in 5 of 12 marsupial and 1 of 3 eutherian species examined in southeastern australia. prevalence of infection in native mammals was as follows: macropus giganteus, 59%; m. rufogriseus banksianus, 15%; wallabia bicolor, 5%; vombatus ursinus, 30%; trichosurus vulpecula, 5%; and rattus fuscipes, 4%. collection sites were assigned to one of two categories. prevalence was higher in macropodids collected on agricultural pastures grazed by sheep and cattle (categor ... | 1981 | 7340772 |
| alterations in spermatogenic activity and hormonal status in a seasonally breeding rat, rattus fuscipes. | | 1980 | 7353786 |
| onchocerca-like lesions induced by the filarioid nematode cercopithifilaria johnstoni, in its natural hosts and in the laboratory rat. | histo-pathological analysis of the eyes, ears, skin and associated skeletal muscles of the back of 14 animals infected with a filarioid worm with dermal microfilariae, cercopithifilaria johnstoni: seven rattus fuscipes, of which four were naturally infected, two marsupials, perameles nasuta and isodon macrourus, and five r. norvegicus. this filarioid nematode induces skin and eye lesions in all the infected animals. these lesions are similar to those described earlier with other filarioid specie ... | 1993 | 8154782 |
| spotted fever group rickettsial infection in south-eastern australia: isolation of rickettsiae. | flinders island spotted fever (fisf), a spotted fever group (sfg) rickettsial disease first described in 1991, occurs in south-eastern australia. the isolation of the aetiological agent is described for the first time having been obtained from the blood of two patients. an additional 22 cases are also reported. of these patients four had positive initial serology, and 20 showed seroconversion (using rickettsia australis as antigen). acute phase blood specimens taken from seven patients caused ne ... | 1993 | 8403837 |
| isolation and characterization of microsatellite loci from the bush rat, rattus fuscipes greyii. | | 1999 | 10447876 |
| variation on islands: major histocompatibility complex (mhc) polymorphism in populations of the australian bush rat. | loss of genetic variation in small, isolated populations is commonly observed at neutral or nearly neutral loci. in this study, the loss of genetic variation was assessed in island populations for a locus of major histocompatibility complex (mhc), a locus shown to be under the influence of balancing selection. a total of 36 alleles was found at the second exon of rt1.ba in 14 island and two mainland populations of rattus fuscipes greyii. despite this high overall diversity, a substantial lack of ... | 1999 | 10632858 |
| [trichosomoides nasalis biocca & aurizi, 1961 and t. spratti n. sp. (nematoda: trichinelloidea), from the nasal cavity of murids]. | the nematode parasite of the nasal mucosa of rodents, trichosomoides nasalis, is common in the murid arvicanthis niloticus, in senegal. the morphological study of this material allowed us to augment the original description, made with specimens recovered in italy from rattus norvegicus. this analysis shows that specimens from rattus fuscipes in australia, which had been identified to this species, represent a distinct species (smaller, with an average of five intrauterine males per female instea ... | 2000 | 11031758 |
| gallegostrongylus australis n. sp. (nematoda: angiostrongylidae) from muridae in australia, with zoogeographical considerations. | gallegostrongylus australis n. sp. (nematoda: angiostrongylidae) is described from subpleural nodules in the lungs of rattus fuscipes, r. lutreolus and mus domesticus in australia. it is distinguished from g. andersoni occurring in gerbillids in west africa by the shorter lengths of spicules and gubernaculum, and from g. ibicensis occurring in microtids and murids in spain by the greater lengths of spicules and gubernaculum and the shorter distances from vulva and from anus to the caudal extremi ... | 2001 | 11304950 |
| life history and pathogenesis of gallegostrongylus australis (nematoda: angiostrongylidae) in muridae. | gallegostrongylus australis spratt, haycock & walter, 2001 (nematoda: angiostrongylidae) developed in deroceras panormitanum, lehmannia nyctelia, l. flava and milax gigates (gastropoda). the first moult occurred at 18-19 days after infection (dai) and the second moult at 28 dai. larvae were infective to experimental murid definitive hosts at 35 dai. in experimentally infected rattus fuscipes larvae moulted l3-4 at 3 dai and l4-5 at 6-7 dai. patency in r.fuscipes, r. lutreolus, r. norvegicus and ... | 2001 | 11474979 |
| resolution of natural groups using iterative assignment tests: an example from two species of australian native rats (rattus). | sympatric individuals of rattus fuscipes and rattus leucopus, two australian native rats from the tropical wet forests of north queensland, are difficult to distinguish morphologically and are often confused in the field. when we started a study on fine-scale movements of these species, using microsatellite markers, we found that the species as identified in the field did not form coherent genetic groups. in this study, we examined the potential of an iterative process of genetic assignment to s ... | 2001 | 11555250 |
| spatial autocorrelation analysis offers new insights into gene flow in the australian bush rat, rattus fuscipes. | dispersal is a fundamental process that influences the response of species to landscape change and habitat fragmentation. in an attempt to better understand dispersal in the australian bush rat, rattus fuscipes, we have combined a new multilocus autocorrelation method with hypervariable microsatellite genetic markers to investigate fine-scale (< or = 1 km) patterns of spatial distribution and spatial genetic structure. the study was conducted across eight trapping transects at four sites, with a ... | 2003 | 12836834 |
| distributions of the paralysis ticks ixodes cornuatus and ixodes holocyclus in south-eastern australia. | to describe the actual and potential geographic distributions of ixodes cornuatus and i holocyclus in south-eastern australia. | 2007 | 17903131 |
| a heterogeneity test for fine-scale genetic structure. | for organisms with limited vagility and/or occupying patchy habitats, we often encounter nonrandom patterns of genetic affinity over relatively small spatial scales, labelled fine-scale genetic structure. both the extent and decay rate of that pattern can be expected to depend on numerous interesting demographic, ecological, historical, and mating system factors, and it would be useful to be able to compare different situations. there is, however, no heterogeneity test currently available for fi ... | 2008 | 18677808 |
| plasticity in body temperature and metabolic capacity sustains winter activity in a small endotherm (rattus fuscipes). | small mammals that remain active throughout the year at a constant body temperature have a much greater energy and food requirement in winter. lower body temperatures in winter may offset the increased energetic cost of remaining active in the cold, if cellular metabolism is not constrained by a negative thermodynamic effect. we aimed to determine whether variable body temperatures can be advantageous for small endotherms by testing the hypothesis that body temperature fluctuates seasonally in a ... | 2010 | 20026416 |
| low levels of physical activity increase metabolic responsiveness to cold in a rat (rattus fuscipes). | physical activity modulates expression of metabolic genes and may therefore be a prerequisite for metabolic responses to environmental stimuli. however, the extent to which exercise interacts with environmental conditions to modulate metabolism is unresolved. hence, we tested the hypothesis that even low levels of physical activity are beneficial by improving metabolic responsiveness to temperatures below the thermal neutral zone, thereby increasing the capacity for substrate oxidation and energ ... | 2010 | 20885954 |
| evolutionary relationships and divergence times among the native rats of australia. | the genus rattus is highly speciose and has a complex taxonomy that is not fully resolved. as shown previously there are two major groups within the genus, an asian and an australo-papuan group. this study focuses on the australo-papuan group and particularly on the australian rats. there are uncertainties regarding the number of species within the group and the relationships among them. we analysed 16 mitochondrial genomes, including seven novel genomes from six species, to help elucidate the e ... | 2010 | 21126350 |
| identification of novel trypanosome genotypes in native australian marsupials. | in the present study, the occurrence and molecular phylogeny of trypanosome parasites were studied in both wild and captive marsupials from western australia and queensland. blood samples were screened by pcr at the 18s rdna locus, and the glycosomal glyceraldehyde phosphate dehydrogenase gene. overall, 5.3% of the blood samples were positive at the 18s rdna locus. all positives belonged to wild-captured western australian individuals, where trypanosome-specific dna was detected in 9.8% of the s ... | 2011 | 21802854 |
| diversity of bartonella species detected in arthropod vectors from animals in australia. | a variety of bartonella species were detected in two species of ticks and three species of fleas collected from marsupial hosts; brush-tailed bettong or woylie (bettongia penicillata) and western barred bandicoots (perameles bougainville) and from a rodent host; rattus fuscipes in western australia. bartonella species were detected using nested-pcr of the glta gene and the 16s-23s ribosomal internal transcribed spacer region (its), and species were characterized using dna sequencing of the 16s r ... | 2011 | 21862131 |
| Genetic characterization of flea-derived Bartonella species from native animals in Australia suggests host-parasite co-evolution. | Fleas are important arthropod vectors for a variety of diseases in veterinary and human medicine, and bacteria belonging to the genus Bartonella are among the organisms most commonly transmitted by these ectoparasites. Recently, a number of novel Bartonella species and novel species candidates have been reported in marsupial fleas in Australia. In the present study the genetic diversity of marsupial fleas was investigated; 10 species of fleas were collected from seven different marsupial and pla ... | 2011 | 21856444 |
| population and behavioural responses of native prey to alien predation. | the introduction of invasive alien predators often has catastrophic effects on populations of naïve native prey, but in situations where prey survive the initial impact a predator may act as a strong selective agent for prey that can discriminate and avoid it. using two common species of australian small mammals that have persisted in the presence of an alien predator, the european red fox vulpes vulpes, for over a century, we hypothesised that populations of both would perform better where the ... | 2011 | 22042524 |
| trypanosomes of australian mammals: a review. | approximately 306 species of terrestrial and arboreal mammals are known to have inhabited the mainland and coastal islands of australia at the time of european settlement in 1788. the exotic trypanosoma lewisi was the first mammalian trypanosome identified in australia in 1888, while the first native species, trypanosoma pteropi, was taxonomically described in 1913. since these discoveries, about 22% of the indigenous mammalian fauna have been examined during the surveillance of trypanosome biod ... | 2014 | 25161902 |
| comparative pathogenesis of eosinophilic meningitis caused by angiostrongylus mackerrasae and angiostrongylus cantonensis in murine and guinea pig models of human infection. | this study investigated comparatively the pathogenicity of experimental infection of mice and guinea pigs, with angiostrongylus mackerrasae and the closely related species a. cantonensis. time course analyses showed that a. mackerrasae causes eosinophilic meningitis in these hosts, which suggests that the species has the potential to cause meningitis in humans and domestic animals. both a. mackerrasae and the genetically similar a. cantonensis caused eosinophilic meningitis in mice at two time p ... | 2016 | 27278827 |
| the mitochondrial genome of angiostrongylus mackerrasae as a basis for molecular, epidemiological and population genetic studies. | angiostrongylus mackerrasae is a metastrongyloid nematode endemic to australia, where it infects the native bush rat, rattus fuscipes. this lungworm has an identical life cycle to that of angiostrongylus cantonensis, a leading cause of eosinophilic meningitis in humans. the ability of a. mackerrasae to infect non-rodent hosts, specifically the black flying fox, raises concerns as to its zoonotic potential. to date, data on the taxonomy, epidemiology and population genetics of a. mackerrasae are ... | 2015 | 26381738 |
| a test of a competition model with reference to three species of small mammals in south-eastern australia. | this study tests the hypothesis that competition occurs in a community of three species of small mammals (antechinus stuartii and a. swainsonii, marsupialia; rattus fuscipes, rodentia) in south-eastern australia. the hypothesis was tested by using a simple model of competition that is based on two premises: i. competition results in a negative numerical or a negative spatial association between species, and ii. competition is more intense where the densities of the competing species are relative ... | 1983 | 28310546 |
| can remote infrared cameras be used to differentiate small, sympatric mammal species? a case study of the black-tailed dusky antechinus, antechinus arktos and co-occurring small mammals in southeast queensland, australia. | the black-tailed dusky antechinus (antechinus arktos) is an endangered, small carnivorous marsupial endemic to australia, which occurs at low population density along with abundant sympatric populations of other small mammals: antechinus stuartii, rattus fuscipes and melomys cervinipes. using a. arktos as a model species, we aimed to evaluate the effectiveness of infrared digital camera traps for detecting and differentiating small mammals and to comment on the broad applicability of this method ... | 2017 | 28792958 |
| fine-scale habitat heterogeneity influences occupancy in terrestrial mammals in a temperate region of australia. | vegetation heterogeneity is an inherent feature of most ecosystems, characterises the structure of habitat, and is considered an important driver of species distribution patterns. however, quantifying fine-scale heterogeneity of vegetation cover can be time consuming, and therefore it is seldom measured. here, we determine if heterogeneity is worthwhile measuring, in addition to the amount of cover, when examining species distribution patterns. further, we investigated the effect of the surround ... | 2015 | 26394327 |
| hematologic and biochemical reference values of the australian bush rat (rattus fuscipes). | we provide hematologic (n = 34) and biochemical (n = 30) blood values for wild-caught australian bush rats (rattus fuscipes). hematology values have similar range limits compared with other rat species. biochemistry values for glucose, alanine transaminase, aspartate aminotransferase, and creatine kinase have higher maximum ranges compared with other rats. | 2015 | 25973617 |
| competitive naïveté between a highly successful invader and a functionally similar native species. | naïveté can occur within any novel antagonistic interaction, and competitive forces play a fundamental role in shaping community structure, yet competitive naïveté has received very little attention in the literature to date. naïveté towards a novel competitor is unlikely to result in immediate mortality, but could potentially affect access to resources and hence population growth and survival. in cases where only one species (either native or alien) remains naïve to the other, the species that ... | 2014 | 24390480 |
| competition and habitat use in native australian rattus: is competition intense, or important? | this study investigates patterns of habitat use and competition in sympatric populations of the bush rat, rattus fuscipes, and swamp rat, r. lutreolus, in the blue mountains national park, new south wales, australia. radiotracking showed that the home ranges of r. fuscipes tended to occupy woodland more than those of r. lutreolus, whereas use of heath and sedgeland by both species was equal. home range overlaps were less between the two species than between individuals of r. lutreolus. trap-capt ... | 2001 | 28547398 |
| genetic variation in isolated populations of the australian bush-rat, rattus fuscipes. | | 1978 | 28564093 |
| molecular surveillance of piroplasms in ticks from small and medium-sized urban and peri-urban mammals in australia. | natural landscape alterations as a consequence of urbanisation are one of the main drivers in the movements of wildlife into metropolitan and peri-urban areas. worldwide, these wildlife species are highly adaptable and may be responsible for the transmission of tick-borne pathogens including piroplasms (babesia, theileria and cytauxzoon spp.) that cause piroplasmosis in animals and occasionally in humans. little is known about piroplasms in the ticks of urban wildlife in australia. ticks from lo ... | 2018 | 29988853 |
| cryptosporidium viatorum from the native australian swamp rat rattus lutreolus - an emerging zoonotic pathogen? | cryptosporidium viatorum is a globally distributed pathogenic species of cryptosporidium that has only ever been recorded from humans, until now. for the first time, we molecularly characterised a novel subtype of c. viatorum (subtype xvba2g1) from the endemic australian swamp rat (rattus lutreolus) using the small subunit of nuclear ribosomal rna (ssu) gene and then subtyped it using the 60-kilodalton glycoprotein (gp60) gene. in total, faecal samples from 21 swamp rats (three were positive for ... | 2018 | 29556470 |
| the mitochondrial genome of angiostrongylus mackerrasae is distinct from a. cantonensis and a. malaysiensis. | the native rat lungworm (angiostrongylus mackerrasae) and the invasive rat lungworm (angiostrongylus cantonensis) occur in eastern australia. the species identity of a. mackerrasae remained unquestioned until relatively recently, when compilation of mtdna data indicated that a. mackerrasae sensu aghazadeh et al. (2015b) clusters within a. cantonensis based on their mitochondrial genomes (mtdna). to re-evaluate the species identity of a. mackerrasae, we sought material that would be morphological ... | 2020 | 32052727 |