| klossiella spp. in the kidneys of peramelid, petaurid, and macropodid marsupials. | klossiella spp. were found in kidneys of individuals from six genera in two of the three superfamilies of australian marsupials. klossiella quimrensis sp.n. is described in the bandicoots, isoodon obesulus and perameles gunnii (peramelidae). k. convolutor sp.n. is described in the ringtail possum pseudocheirus peregrinus (petauridae). three macropodid genera were infected. k.serendipensis sp.n. is described in the swamp wallaby, wallabia bicolor, and k. callitris sp.n. is described in the wester ... | 1975 | 807049 |
| the distribution and sizes of ganglion cells in the retinas of five australian marsupials. | maps of ganglion-cell distribution have been constructed from whole-mounted retinas of five australian marsupial species. the pademelon wallaby (thylogale billiardieri), the scrub wallaby or tammar (macropus eugenii), and the carnivorous tasmanian devil (sarcophilus harissi) have both a visual streak and an area centralis. the retina of the brown bandicoot (isoodon obesulus) also shows both these features but they are less prominent than in the former three species, whereas the burrow-dwelling, ... | 1981 | 7204673 |
| 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 |
| [studies on the echinonematinae (nematoda)]. | complementary data on the echinonematinae have been obtained by study of "the australian helminth collection, formerly the univeristy of adelaide, department of zoology helminth collection, currently housed in the south australial museum", and by a morphological and biological study of new material. the echinonematinae actually known are the following: -- seurechina chaneeti n. gen., n. sp., parasite of dasyurus hallucatus (west australia) does not have large cephalic hooks but about 50 rings of ... | 1980 | 7458168 |
| cone topography and spectral sensitivity in two potentially trichromatic marsupials, the quokka (setonix brachyurus) and quenda (isoodon obesulus). | the potential for trichromacy in mammals, thought to be unique to primates, was recently discovered in two australian marsupials. whether the presence of three cone types, sensitive to short- (sws), medium- (mws) and long- (lws) wavelengths, occurs across all marsupials remains unknown. here, we have investigated the presence, distribution and spectral sensitivity of cone types in two further species, the quokka (setonix brachyurus) and quenda (isoodon obesulus). immunohistochemistry revealed th ... | 2005 | 15888411 |
| morphological and molecular characteristics of a species of hepatozoon miller, 1908 (apicomplexa: adeleorina) from the blood of isoodon obesulus (marsupialia: peramelidae) in western australia. | examination of blood films as part of a study to assess the health status of the southern brown bandicoot isoodon obesulus (shaw) in western australia revealed the gamonts of a haemogregarine parasite in some samples, the first to be recognised in a bandicoot in this state. light microscope morphological characteristics and partial sequence of the 18s rrna gene were used to describe these organisms. morphological characters did not differentiate the organism in the current study from previously ... | 2006 | 16758303 |
| myosin isoforms and fibre types in limb muscles of australian marsupials: adaptations to hopping and non-hopping locomotion. | using immunohistochemistry and sds-page, we studied the myosin heavy chain (myhc) composition and fibre type distribution of hindlimb muscles of hopping and non-hopping australian marsupials. we showed that hindlimb muscles of a bandicoot (isoodon obesulus, order peramelomorphia) and a small macropodoid, the brushtail bettong (bettongia penicillata) expressed four myhcs, slow, 2a, 2x and 2b, and had the corresponding fibre types as other macropods reported earlier. the fastest and most powerful ... | 2008 | 17703312 |
| validation of various parasite detection tests for use in the australian marsupials quenda ( isoodon obesulus) and brushtail possums ( trichosurus vulpecula). | we aimed to validate the use of 1) the modified agglutination test and a polymerase chain reaction (pcr) protocol in detecting toxoplasma gondii infection in quenda ( isoodon obesulus) and brushtail possums ( trichosurus vulpecula); 2) immunofluorescence microscopy of feces and a pcr and sequencing protocol in detecting giardia spp. infection in quenda; and 3) a fecal flotation protocol in detecting gastrointestinal helminth infections of quenda. quenda and brushtail possum carcasses, and sample ... | 2017 | 27927910 |
| interspecific variation of zona pellucida glycoconjugates in several species of marsupial. | the zona pellucida glycoconjugate content of several marsupial species was investigated using differential lectin histochemistry. ovaries from fat-tailed dunnarts, a southern brown bandicoot, grey short-tailed opossums, brushtail possums, ringtail possums, koalas and eastern grey kangaroos were fixed, embedded in paraffin wax, sectioned and stained with ten fluorescein isothiocyanate-conjugated lectins. sections were also incubated with either neuraminidase or saponified, respectively, before in ... | 2000 | 10864820 |
| morphological and molecular description of ixodes woyliei n. sp. (ixodidae) with consideration for co-extinction with its critically endangered marsupial host. | taxonomic identification of ticks obtained during a longitudinal survey of the critically endangered marsupial, bettongia penicillata gray, 1837 (woylie, brush-tailed bettong) revealed a new species of ixodes latrielle, 1795. here we provide morphological data for the female and nymphal life stages of this novel species (ixodes woyliei n. sp.), in combination with molecular characterisation using the mitochondrial cytochrome c oxidase subunit 1 gene (cox1). in addition, molecular characterisatio ... | 2017 | 28173840 |
| a new eimeria species parasitic in isoodon obesulus (marsupialia: peramelidae) in western australia. | feces from southern brown bandicoots, isoodon obesulus, inhabiting the perth metropolitan area were examined using fecal flotation and light microscopy, and were frequently found to contain oocysts (10/24; 42%). to enable formal description of the proposed new eimeria species, i.e., eimeria quenda n. sp., fecal oocysts from 1 juvenile male i. obesulus were allowed to sporulate in 2% potassium dichromate (k(2)cr(2)o(7)) at room temperature. sporulated oocysts are spheroidal to subspheroidal 24.5 ... | 2011 | 21711101 |
| confirmation of a unique species of giardia, parasitic in the quenda (isoodon obesulus). | the 'quenda genotype' of giardia was first identified in quenda (syn. southern brown bandicoots, isoodon obesulus) in western australia in 2004. we aimed to formally describe this genotype as a species of giardia, giardia peramelis. seventy five faecal samples positive for g. peramelis were obtained from quenda within the statistical division of perth, western australia. these samples were used in morphological and molecular characterisation of g. peramelis. pcr amplification and sequencing was ... | 2016 | 28560164 |
| urban environments alter parasite fauna, weight and reproductive activity in the quenda (isoodon obesulus). | some wildlife species are capable of surviving in urbanised environments. however, the implications of urbanisation on wildlife health, and public health regarding zoonoses, are often unknown. quenda (syn. southern brown bandicoots, isoodon obesulus) survive in many areas of perth, australia, despite urbanisation. this study investigated differences in gastrointestinal and macroscopic ecto-parasitic infections, morphometrics and reproductive status between bushland and urban dwelling quenda. 287 ... | 2017 | 28764110 |
| ultrastructure and motility of spermatozoa in the male reproductive tract of perameloid marsupials. | the number, distribution, maturation, motility and ultrastructure of spermatozoa from both northern (isoodon macrourus) and southern (isoodon obesulus) brown bandicoots were examined. one epididymidis per animal was fixed for light microscopy and transmission electron microscopy, and the contralateral side was used for the determination of sperm number, distribution and motility. sperm form was similar between the two species. approximately 56 x 10(6) testicular sperm and 100 x 10(6) epididymal ... | 1995 | 8848582 |
| demographic and genetic viability of a medium-sized ground-dwelling mammal in a fire prone, rapidly urbanizing landscape. | the rapid and large-scale urbanization of peri-urban areas poses major and complex challenges for wildlife conservation. we used population viability analysis (pva) to evaluate the influence of urban encroachment, fire, and fauna crossing structures, with and without accounting for inbreeding effects, on the metapopulation viability of a medium-sized ground-dwelling mammal, the southern brown bandicoot (isoodon obesulus), in the rapidly expanding city of perth, australia. we surveyed two metapop ... | 2018 | 29444118 |
| eimeria spp. infecting quenda (isoodon obesulus) in the greater perth region, western australia. | parasites of wildlife inhabiting urbanised and peri-urban environments are of interest regarding wildlife population health, and also veterinary public health in the case of parasites that can also infect humans and domestic animals. this study aimed to: identify, and estimate the prevalence of, species of eimeria parasitic in quenda (isoodon obesulus) in the greater perth region, western australia; 2) morphologically describe and genetically characterise a novel observed species of eimeria as e ... | 2016 | 27693360 |
| comparative population genetic structure of the endangered southern brown bandicoot, isoodon obesulus, in fragmented landscapes of southern australia. | genetic connectivity is a key factor for maintaining the persistence of populations in fragmented landscapes. in highly modified landscapes such us peri-urban areas, organisms' dispersal among fragmented habitat patches can be reduced due to the surrounding matrix, leading to subsequent decreased gene flow and increased potential extinction risk in isolated sub-populations. however, few studies have compared within species how dispersal/gene flow varies between regions and among different forms ... | 2016 | 27096952 |
| giardia in western australian wildlife. | giardia has been found in numerous species of mammalian wildlife but very little information is available on the species and strains/genotypes that occur naturally in mammals in the wild. recently, a novel genotype of giardia was described in western australia, in the southern brown bandicoot, or quenda (isoodon obesulus). in order to determine the host range, distribution and prevalence of this novel 'quenda' 'genotype of giardia, a comprehensive survey of this marsupial and cohabiting mammalia ... | 2010 | 20211528 |
| the sensitivity of population viability analysis to uncertainty about habitat requirements: implications for the management of the endangered southern brown bandicoot. | whenever population viability analysis (pva) models are built to help guide decisions about the management of rare and threatened species, an important component of model building is the specification of a habitat model describing how a species is related to landscape or bioclimatic variables. model-selection uncertainty may arise because there is often a great deal of ambiguity about which habitat model structure best approximates the true underlying biological processes. the standard approach ... | 2008 | 18477023 |
| genomic characterization of a novel virus found in papillomatous lesions from a southern brown bandicoot (isoodon obesulus) in western australia. | the genome of a novel virus, tentatively named bandicoot papillomatosis carcinomatosis virus type 2 (bpcv2), obtained from multicentric papillomatous lesions from an adult male southern brown bandicoot (isoodon obesulus) was sequenced in its entirety. bpcv2 had a circular double-stranded dna genome consisting of 7277 bp and open reading frames encoding putative l1 and l2 structural proteins and putative large t antigen and small t antigen transforming proteins. these genomic features, intermedia ... | 2008 | 18440042 |
| effect of season on thermoregulation, metabolism and ventilation of the southern brown bandicoot isoodon obesulus (marsupialia: peramelidae). | seasonal variation in various thermoregulatory, metabolic and ventilatory parameters was examined for southern brown bandicoots (isoodon obesulus fusciventer) from a mediterranean climate near perth, western australia. there was significant seasonal variation over the four annual seasons at thermoneutrality (ta=30 degrees c) in body temperature, oxygen consumption, carbon dioxide production, respiratory exchange ratio, total evaporative water loss, wet and dry thermal conductance and tidal volum ... | 2008 | 18286524 |
| klossiella quimrensis (apicomplexa: klossiellidae) causes renal coccidiosis in western barred bandicoots perameles bougainville (marsupialia: peramelidae) in western australia. | previous studies have described a range of klossiella species parasitic in marsupial hosts. klossiella quimrensis is the etiologic agent of renal coccidiosis in the peramelid marsupial hosts isoodon obesulus and perameles gunnii in eastern australia, but there is no previous report of klossiellosis in western australian peramelids. this study describes klossiellosis diagnosed by histology of renal tissue sections collected during necropsy of 20 perameles bougainville between 2000 and 2005. sporo ... | 2007 | 17436946 |
| effects of long-term captivity on thermoregulation, metabolism and ventilation of the southern brown bandicoot (marsupialia: peramelidae). | thermoneutral metabolic and ventilatory parameters were measured every 3 months over 2 years for southern brown bandicoots held in captivity, and from a nearby reserve. captive bandicoots were 130 g (9.9%) heavier than wild bandicoots. long-term captivity had no effect on body temperature, basal metabolic rate (oxygen consumption), thermal conductance or respiratory ventilation, but there was an effect on carbon dioxide production, respiratory exchange ratio and total evaporative water loss (val ... | 2007 | 17072621 |
| cyst morphology and sequence analysis of the small subunit rdna and ef1 alpha identifies a novel giardia genotype in a quenda (isoodon obesulus) from western australia. | sequence analysis of the small subunit ribosomal dna (ssu-rdna) and elongation factor 1 alpha (ef1 alpha) was performed on giardia cysts isolated from faeces collected from a quenda (isoodon obesulus) in the southwest of western australia. the ssu-rdna and ef1 alpha were sequenced in their entirety and correspondingly aligned with the published sequence information of other known species and genotypes of giardia. phylogenetic analysis of the ssu-rdna and ef1 alpha sequences identified the quenda ... | 2004 | 15374535 |
| sex chromosome elimination, x chromosome inactivation and reactivation in the southern brown bandicoot isoodon obesulus (marsupialia: peramelidae). | cytogenetic studies have shown that bandicoots (family peramelidae) eliminate one x chromosome in females and the y chromosome in males from some somatic tissues at different stages during development. the discovery of a polymorphism for x-linked phosphoglycerate kinase (pgk-1) in a population of isoodon obesulus from mount gambier, south australia, has allowed us to answer a number of long standing questions relating to the parental source of the eliminated x chromosome, x chromosome inactivati ... | 2002 | 12900554 |
| effects of temperature on metabolism, ventilation, and oxygen extraction in the southern brown bandicoot isoodon obesulus (marsupialia: peramelidae). | the effects of ambient temperatures (t(a)) from 10 degrees to 35 degrees c on metabolism, ventilation, and oxygen extraction were examined for the southern brown bandicoot (isoodon obesulus). oxygen consumption (vo2) followed the pattern typical for endotherms, decreasing with increasing t(a) from 10 degrees to 25 degrees c. it did not significantly change between ta=25 degrees and 35 degrees c (the thermoneutral zone). vo2 was approximately 2.4 times higher at ta=10 degrees c (0.967 ml o(2) g(- ... | 2013 | 12324897 |
| random amplified polymorphic dna analysis of southern brown bandicoot (isoodon obesulus) populations in western australia reveals genetic differentiation related to environmental variables. | random amplified polymorphic dna (rapd) markers were used to analyse genetic variation within and between populations of isoodon obesulus in western australia. genetically controlled geographical variation in body size associated with habitat type and rainfall exists in this species, raising the question of whether local conditions may influence gene flow in i. obesulus. the rapd markers displayed substantial genetic variation, with all animals possessing unique rapd phenotypes over 39 polymorph ... | 2000 | 10736049 |
| first record of trypanosomes in tasmanian bandicoots. | trypanosomes were observed in 38% of blood smears from southern brown bandicoots (isoodon obesulus) and in 10% of blood smears from eastern barred bandicoots (perameles gunnii). this is the first record of such hemoparasites in tasmanian marsupials. there appeared to be a statistically significant size difference between trypanosomes found in the 2 bandicoot species, suggesting the possibility of 2 distinct species of parasite. there appears to be a distinction between the trypanosomes found in ... | 1998 | 9645853 |
| plagiorhynchus (prosthorhynchus) cylindraceus (goeze, 1782) schmidt and kuntz, 1966, from the australian bandicoots, perameles gunnii gray 1838, and isoodon obesulus (shaw, 1797). | plagiorhynchus (prosthorhynchus) cylindraceus (goeze, 1782) schmidt and kuntz, 1966, usually parasitic in passerine birds, is here reported to be found encysted in the peritoneum of the bandicoot isoodon obesulus from tasmania. specimens recovered from the bandicoot perameles gunnii, also collected from tasmania, are the first reported from the intestine of a mammal. the origin of p. cylindraceus infection in australian hosts is discussed. | 1988 | 3193330 |
| aspects of renal vascular organization and early vascular tubular relations of the marsupial isoodon obesulus. | renal vascular tubular relationships were studied in the marsupial isoodon obesulus (the common brown bandicoot). the microcirculation was filled with colored silicone rubber by intra-arterial injection of the intact kidney. nephrons were defined by the injection of silicone rubber of a contrasting color into the space of bowman's capsule in thick, cleared slices of renal tissue. the details of the vascular tubular relationship in this marsupial are strikingly similar to relationships previously ... | 1982 | 7049005 |
| discrimination-reversal learning in the marsupial isoodon obesulus (marsupialia, peramelidae). | | 1974 | 4462410 |
| development of the teeth in a pouch-young specimen of isoodon obesulus and one of perameles gunnii (peramedidae: marsupialia). | | 1972 | 4504644 |
| skin structure in newborn marsupials with focus on cutaneous gas exchange. | a morphological and morphometric study of the skin of a variety of newborn marsupials (dasyurus viverrinus, monodelphis domestica, trichosurus vulpecula, isoodon obesulus, perameles nasuta, phascolarctos cinereus, potorous tridactylus, petrogale penicillata, thylogale thetidi, macropus dorsalis) and of a monotreme hatchling (ornithorhynchus anatinus) was undertaken to assess the possibility of cutaneous gas exchange. additionally, the lungs of some of these species were investigated to assess it ... | 2018 | 29947022 |
| elucidating patterns in the occurrence of threatened ground-dwelling marsupials using camera-traps. | establishing trends in endangered fauna against management efforts is a key but often challenging enterprise. camera-traps offer a new and literal window into monitoring many different mammalian species. getting it right demands seeking baseline information about how often target species interact with these devices, prior to setting a long-term monitoring strategy. we used a camera-trap array to collect detection data on three species of threatened ground-dwelling marsupials in south-eastern mai ... | 2019 | 31684179 |
| meta-transcriptomic identification of trypanosoma spp. in native wildlife species from australia. | wildlife species carry a remarkable diversity of trypanosomes. the detection of trypanosome infection in native australian fauna is central to understanding their diversity and host-parasite associations. the implementation of total rna sequencing (meta-transcriptomics) in trypanosome surveillance and diagnosis provides a powerful methodological approach to better understand the host species distribution of this important group of parasites. | 2020 | 32891158 |
| 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 |
| anthropozoonotic significance, risk factors and spatial distribution of giardia spp. infections in quenda (isoodon obesulus) in the greater perth region, western australia. | giardia spp. infections in wildlife populations have been linked to anthropogenic sources of infection and public health risk in a diversity of wildlife species and ecological locations worldwide. quenda (isoodon obesulus) remain in many urbanised areas of perth, western australia, and can be gregarious in their interactions with humans and domestic animals. in a previous study, a high prevalence of giardia spp. infection was identified amongst quenda trapped in urbanised environments and bushla ... | 2019 | 30993073 |