| energy metabolism in potoroine marsupials. | fasting and fed metabolic rates were measured in three species of potoroine marsupials, the rufous rat-kangaroo (aepyprymnus rufescens), the long-nosed potoroo (potorous tridactylus) and the brush-tailed bettong (bettongia penicillata). there were no significant differences among potoroine species in fasting metabolic rate. the lowest fasting heat production for each species was 11-20% less than the interspecific value of 295 kj.kg-0.75.day-1 for basal metabolism of mature, non-reproductive euth ... | 1992 | 1401340 |
| tuberculous osteomyelitis caused by mycobacterium intracellulare in the brush-tailed bettong. | | 1986 | 3735593 |
| significance of sulfhydryl compounds in the manifestation of fluoroacetate toxicity to the rat, brush-tailed possum, woylie and western grey kangaroo. | levels of citrate in kidneys and livers of rats with normal glutathione levels increased 6.8 and 1.7-fold respectively 2 h after dosing with 1.5 mg of compound 1080 (= 95% sodium fluoroacetate) per kilogram body weight. in animals with liver glutathione levels 15% of normal, increases in plasma and liver citrate levels after dosing with fluoroacetate were significantly greater than those of control animals. cysteamine and n-acetylcysteine, like glutathione, partially protected aconitate hydratas ... | 1985 | 4051904 |
| locomotion energetics and gait characteristics of a rat-kangaroo, bettongia penicillata, have some kangaroo-like features. | the locomotory characteristics of kangaroos and wallabies are unusual, with both energetic costs and gait parameters differing from those of quadrupedal running mammals. the kangaroos and wallabies have an evolutionary history of only around 5 million years; their closest relatives, the rat-kangaroos, have a fossil record of more than 26 million years. we examined the locomotory characteristics of a rat-kangaroo, bettongia penicillata. locomotory energetics and gait parameters were obtained from ... | 2003 | 12905005 |
| 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 |
| trypanosomes in a declining species of threatened australian marsupial, the brush-tailed bettong bettongia penicillata (marsupialia: potoroidae). | the brush-tailed bettong (bettongia penicillata), or woylie, is a medium-sized macropod marsupial that has undergone a rapid and substantial decline throughout its home range in the upper warren region of western australia over a period of approximately 5 years. as part of an investigation into possible causes of the decline a morphologically distinct trypanosoma sp. was discovered by light microscopy in the declining population but was absent in a stable population within the karakamia wildlife ... | 2008 | 18752704 |
| morphological and molecular characterization of trypanosoma copemani n. sp. (trypanosomatidae) isolated from gilbert's potoroo ( potorous gilbertii) and quokka ( setonix brachyurus). | little is known of the prevalence and life-cycle of trypanosomes in mammals native to australia. native australian trypanosomes have previously been identified in marsupials in the eastern states of australia, with one recent report in brush-tailed bettongs (bettongia penicillata), or woylie in western australia in 2008. this study reports a novel trypanosoma sp. identified in blood smears, from 7 critically endangered gilbert's potoroos (potorous gilbertii) and 3 quokkas (setonix brachyurus) in ... | 2009 | 19416553 |
| vertical transmission of toxoplasma gondii in australian marsupials. | to date, little is known about the dynamics of vertical transmission of toxoplasma gondii in australian marsupials. studies in mice demonstrate that vertical transmission of t. gondii is common and that chronically infected mice can transmit t. gondii to successive generations. in this study, pcr and immunohistochemistry were used to detect t. gondii in chronically infected marsupial dams and their offspring. t. gondii was detected in the unfurred pouch young of 2 out of 10 chronically infected ... | 2009 | 19549348 |
| the first complete papillomavirus genome characterized from a marsupial host: a novel isolate from bettongia penicillata. | the first fully sequenced papillomavirus (pv) of marsupials, tentatively named bettongia penicillata papillomavirus type 1 (bppv1), was detected in papillomas from a woylie (bettongia penicillata ogilbyi). the circular, double-stranded dna genome contains 7,737 bp and encodes 7 open reading frames (orfs), e6, e7, e1, e2, e4, l2, and l1, in typical pv conformation. bppv1 is a close-to-root pv with l1 and l2 orfs most similar to european hedgehog pv and bandicoot papillomatosis carcinomatosis viru ... | 2010 | 20200246 |
| 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 |
| observation of a novel babesia spp. in eastern grey kangaroos (macropus giganteus) in australia. | the roles and epidemiological features of tick-borne protozoans are not well elicited in wildlife. babesia spp. are documented in many domestic animals, including cattle, horses, pigs, dogs and cats. three cases affecting eastern grey kangaroos are described. the kangaroos exhibited neurological signs, depression and marked anaemia, and microscopic examination of blood smears revealed intraerythrocytic piroplasms. one to seven intraerythrocytic spherical, oval, pyriform and irregularly-shaped pa ... | 2012 | 24533316 |
| 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 |
| identification of novel babesia and theileria genotypes in the endangered marsupials, the woylie (bettongia penicillata ogilbyi) and boodie (bettongia lesueur). | piroplasms, which include the genera theileria and babesia, are blood-borne parasites transmitted mainly by tick vectors. relatively little is known about their prevalence and clinical impact in australian marsupials. in the present study the occurrence and molecular phylogeny of these parasites were studied in both wild and captive marsupials from western australia (wa) and queensland (qld). blood samples were screened by microscopy and molecular methods, using pcr and dna sequencing of the 18s ... | 2012 | 22433913 |
| in vitro drug susceptibility of two strains of the wildlife trypanosome, trypanosoma copemani: a comparison with trypanosoma cruzi. | trypanosomes are blood protozoan parasites that are capable of producing illness in the vertebrate host. within australia, several native trypanosoma species have been described infecting wildlife. however, only trypanosoma copemani has been associated with pathological lesions in wildlife hosts and more recently has been associated with the drastic decline of the critically endangered woylie (bettongia penicillata). the impact that some trypanosomes have on the health of the vertebrate host has ... | 2017 | 28040568 |
| towards a better understanding of the life cycle of trypanosoma copemani. | trypanosoma copemani has been found infecting several threatened/endangered marsupial species within australia and is thought to be a key player in the rapid decline of the woylie (bettongia penicillata). to better understand the biology and life cycle of this parasite, the growth requirements, and kinetics of infection of two newly described genotypes, t. copemani g1 and g2, were investigated and compared with the t. cruzi strain-10r26 in vitro. both g1 and g2 were able to infect all four cell ... | 2016 | 26712388 |
| temporal and spatial dynamics of trypanosomes infecting the brush-tailed bettong (bettongia penicillata): a cautionary note of disease-induced population decline. | the brush-tailed bettong or woylie (bettongia penicillata) is on the brink of extinction. its numbers have declined by 90% since 1999, with their current distribution occupying less than 1% of their former australian range. woylies are known to be infected with three different trypanosomes (trypanosoma vegrandis, trypanosoma copemani and trypanosoma sp. h25) and two different strains of t. copemani that vary in virulence. however, the role that these haemoparasites have played during the recent ... | 2014 | 24708757 |
| trypanosomes genetic diversity, polyparasitism and the population decline of the critically endangered australian marsupial, the brush tailed bettong or woylie (bettongia penicillata). | while much is known of the impact of trypanosomes on human and livestock health, trypanosomes in wildlife, although ubiquitous, have largely been considered to be non-pathogenic. we describe the genetic diversity, tissue tropism and potential pathogenicity of trypanosomes naturally infecting western australian marsupials. blood samples collected from 554 live-animals and 250 tissue samples extracted from 50 carcasses of sick-euthanized or road-killed animals, belonging to 10 species of marsupial ... | 2013 | 24533319 |
| morphological polymorphism of trypanosoma copemani and description of the genetically diverse t. vegrandis sp. nov. from the critically endangered australian potoroid, the brush-tailed bettong (bettongia penicillata (gray, 1837)). | the trypanosome diversity of the brush-tailed bettong (bettongia penicillata), known locally as the woylie, has been further investigated. at a species level, woylies are critically endangered and have declined by 90% since 1999. the predation of individuals made more vulnerable by disease is thought to be the primary cause of this decline, but remains to be proven. | 2013 | 23622560 |
| morphological and phylogenetic description of trypanosoma noyesi sp. nov.: an australian wildlife trypanosome within the t. cruzi clade. | a number of trypanosome isolates from australian marsupials are within the clade containing the human pathogen trypanosoma cruzi. trypanosomes within this clade are thought to have diverged from a common ancestral bat trypanosome. here, we characterise trypanosoma noyesi sp. nov. isolated from the critically endangered woylie (bettongia pencillata) using phylogenetic inferences from three gene regions (18s rdna, ggapdh, and cytb) coupled with morphological and behavioural observations in vitro. ... | 2016 | 27561173 |
| marsupial cardiac myosins are similar to those of eutherians in subunit composition and in the correlation of their expression with body size. | cardiac myosins and their subunit compositions were studied in ten species of marsupial mammals. using native gel electrophoresis, ventricular myosin in macropodoids showed three isoforms, v(1), v(2) and v(3), and western blots using specific anti-alpha- and anti-beta-cardiac myosin heavy chain (myhc) antibodies showed their myhc compositions to be alphaalpha, alphabeta and betabeta, respectively. atrial myosin showed alphaalpha myhc composition but differed from v(1) in light chain composition. ... | 2007 | 16988832 |
| high muscle mitochondrial volume and aerobic capacity in a small marsupial (sminthopsis crassicaudata) reveals flexible links between energy-use levels in mammals. | we investigated the muscle structure-function relationships that underlie the aerobic capacity of an insectivorous, small (~15 g) marsupial, sminthopsis crassicaudata (family: dasyuridae), to obtain further insight into energy use patterns in marsupials relative to those in placentals, their sister clade within the theria (advanced mammals). disparate hopping marsupials (suborder macropodiformes), a kangaroo (macropus rufus) and a rat-kangaroo (bettongia penicillata), show aerobic capabilities a ... | 2013 | 23239895 |
| 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 species of potoroxyuris (nematoda: oxyuridae) from the woylie bettongia penicillata (marsupialia: potoroidae) from southwestern australia. | potoroxyuris keninupensis n.sp. (nematoda: oxyuridae) is described based on specimens recovered from the caecum and colon of two woylies, bettongia penicillata (marsupialia: potoroidae) from western australia. only one other species of potoroxyuris has been described previously, potoroxyuris potoroo (johnston and mawson, 1939) mawson, 1964, from potorous tridactylus. the new species is most easily differentiated from p. potoroo by the shape of the pharyngeal lobes. the pharyngeal lobes of p. ken ... | 2016 | 27437181 |
| a retrospective study of babesia macropus associated with morbidity and mortality in eastern grey kangaroos (macropus giganteus) and agile wallabies (macropus agilis). | this is a retrospective study of 38 cases of infection by babesia macropus, associated with a syndrome of anaemia and debility in hand-reared or free-ranging juvenile eastern grey kangaroos (macropus giganteus) from coastal new south wales and south-eastern queensland between 1995 and 2013. infection with b. macropus is recorded for the first time in agile wallabies (macropus agilis) from far north queensland. animals in which b. macropus infection was considered to be the primary cause of morbi ... | 2015 | 26106576 |
| infectious disease surveillance in the woylie (bettongia penicillata). | wild populations of the critically endangered woylie (bettongia penicillata) recently declined by 90% in southwest western australia. increased predation is the leading hypothesis for decline, but disease may be playing a role increasing susceptibility to predation. to explore this possibility, we surveyed woylie populations in the wild, in captivity and in a predator-free sanctuary for exposure to, and infection with, four known pathogens of macropods: herpesviruses, wallal and warrego orbiviru ... | 2017 | 28634781 |
| a high prevalence of theileria penicillata in woylies (bettongia penicillata). | the woylie or brush-tailed bettong (bettongia penicillata) is a medium-sized native australian marsupial that has undergone a dramatic decline in numbers in recent years. trypanosome parasites have been identified in the woylie but little is known about the prevalence and clinical impact of other haemoprotozoan parasites in these marsupials. in the present study, the occurrence and molecular phylogeny of a piroplasm was studied in woylies from six different sites in western australia (wa). blood ... | 2012 | 22465500 |
| ultrastructure and motility of spermatozoa in macropodid and potoroidid marsupials. | in order to gain some understanding of the significance of the morphological features of spermatozoa within the macropodoidea, the motility of spermatozoa from two macropodids (petrogale xanthopus and dendrolagus matschiei) and the motility, number and distribution of spermatozoa from three potoroidids (aepyprymnus rufescens, bettongia penicillata and potorous tridactylus) were examined. sperm were collected by electro-ejaculation or from the cauda epididymides. epididymides from the potoroidids ... | 1995 | 8848581 |
| reversing functional extinction of mammals prompts a rethink of paradigms about seed fate in arid australia. | functional extinction of once abundant species has frequently preceded understanding of their ecological roles. consequently, our understanding of ecosystems is prone to shifting baselines because it often relies on observations made on depauperate species assemblages. in australian deserts, current paradigms are that ants are the dominant granivores, mammals are unimportant seed predators and that myrmecochory in many australian shrubs is an adaptation to increase dispersal distance and direct ... | 2018 | 29410877 |
| parasites at risk - insights from an endangered marsupial. | parasites are the most abundant form of life on earth and are vital components of ecosystem health. yet, it is only relatively recently that attention has been given to the risks of extinction that parasites face when their hosts, particularly wildlife, are endangered. in such circumstances, parasites that are host-specific with complicated life cycles are most at risk. such extinction/coextinction events have been poorly documented, principally because of the difficulties of following such exti ... | 2018 | 28986107 |
| evaluating stress physiology and parasite infection parameters in the translocation of critically endangered woylies (bettongia penicillata). | translocation can be stressful for wildlife. stress may be important in fauna translocation because it has been suggested that it can exacerbate the impact of infectious disease on translocated wildlife. however, few studies explore this hypothesis by measuring stress physiology and infection indices in parallel during wildlife translocations. we analysed faecal cortisol metabolite (fcm) concentration and endoparasite parameters (nematodes, coccidians and haemoparasites) in a critically endanger ... | 2017 | 28213652 |
| temporal patterns in the abundance of a critically endangered marsupial relates to disturbance by roads and agriculture. | the aim of this study was to investigate how landscape disturbance associated with roads, agriculture and forestry influenced temporal patterns in woylie (bettongia penicillata) abundance before, during and after periods of rapid population change. data were collected from an area of approximately 140,000 ha of forest within the upper warren region in south-western australia. woylie abundance was measured using cage trapping at 22 grid and five transect locations with varying degrees of landscap ... | 2016 | 27501320 |
| host stress physiology and trypanosoma haemoparasite infection influence innate immunity in the woylie (bettongia penicillata). | understanding immune function is critical to conserving wildlife in view of infectious disease threats, particularly in threatened species vulnerable to stress, immunocompromise and infection. however, few studies examine stress, immune function and infection in wildlife. we used a flow cytometry protocol developed for human infants to assess phagocytosis, a key component of innate immunity, in a critically endangered marsupial, the woylie (bettongia penicillata). the effects of stress physiolog ... | 2016 | 27260808 |
| evaluating the effects of ivermectin treatment on communities of gastrointestinal parasites in translocated woylies (bettongia penicillata). | wildlife species are often treated with anti-parasitic drugs prior to translocation, despite the effects of this treatment being relatively unknown. disruption of normal host-parasite relationships is inevitable during translocation, and targeted anti-parasitic drug treatment may exacerbate this phenomenon with inadvertent impacts on both target and non-target parasite species. here, we investigate the effects of ivermectin treatment on communities of gastrointestinal parasites in translocated w ... | 2017 | 26719294 |
| genetic diversity loss in a biodiversity hotspot: ancient dna quantifies genetic decline and former connectivity in a critically endangered marsupial. | the extent of genetic diversity loss and former connectivity between fragmented populations are often unknown factors when studying endangered species. while genetic techniques are commonly applied in extant populations to assess temporal and spatial demographic changes, it is no substitute for directly measuring past diversity using ancient dna (adna). we analysed both mitochondrial dna (mtdna) and nuclear microsatellite loci from 64 historical fossil and skin samples of the critically endanger ... | 2015 | 26497007 |
| morphology of the lingual papillae in the brush-tailed rat kangaroo. | we examined the dorsal lingual surface of an adult brush-tailed rat kangaroo (bettongia penicillata) by scanning electron microscopy. the filiform and fungiform papillae on the lingual apex and body consisted of a main papilla and secondary papillae. the connective tissue core of the filiform papillae on the lingual apex was cylindrical in shape with a crushed top. the connective tissue core of the filiform papillae on the lingual body had one large and several small processes. the fungiform pap ... | 2014 | 24815106 |
| hematologic characteristics of the woylie (bettongia penicillata ogilbyi). | an accurate assessment of animal health is fundamental to disease investigation in wildlife. blood samples (n = 609) from several populations of the endangered woylie or brush-tailed bettong (bettongia penicillata ogilbyi), collected between march 2006 and april 2010 in western australia and south australia, were used to establish hematologic reference ranges. differences between populations, sexes, and seasons were also investigated. significant sex differences in hematocrit, red blood cell, to ... | 2013 | 24502709 |
| does bipedality predict the group-level manual laterality in mammals? | factors determining patterns of laterality manifestation in mammals remain unclear. in primates, the upright posture favours the expression of manual laterality across species, but may have little influence within a species. whether the bipedalism acts the same in non-primate mammals is unknown. our recent findings in bipedal and quadrupedal marsupials suggested that differences in laterality pattern, as well as emergence of manual specialization in evolution might depend on species-specific bod ... | 2012 | 23251583 |
| the high aerobic capacity of a small, marsupial rat-kangaroo (bettongia penicillata) is matched by the mitochondrial and capillary morphology of its skeletal muscles. | we examined the structure-function relationships that underlie the aerobic capacities of marsupial mammals that hop. marsupials have relatively low basal metabolic rates (bmr) and historically were seen as 'low energy' mammals. however, the red kangaroo, macropus rufus (family macropodidae), has aerobic capacities equivalent to athletic placentals. it has an extreme aerobic scope (fas) and its large locomotor muscles feature high mitochondrial and capillary volumes. m. rufus belongs to a modern ... | 2012 | 22660784 |
| lysine and glutamate transport in the erythrocytes of common brushtail possum, tammar wallaby and eastern grey, kangaroo. | it was recently coincidentally discovered, using 1h nmr spectroscopy, that the erythrocytes of two species of australian marsupials, tammar wallaby (macropus eugenii) and bettong (bettongia penicillata), contain relatively high concentrations of the essential amino acid lysine (agar ns, rae cd, chapman be, kuchel pw. comp biochem physiol 1991;99b:575-97). hence, in the present work the rates of transport of lysine into the erythrocytes from the common brushtail possum (dactylopsilia trivirgata) ... | 1998 | 9773487 |
| duration of embryonic diapause in the brush-tailed bettong, bettongia penicillata (potoroidae): effect of age of quiescent corpus luteum. | it has been shown that changes to the frequency of sucking by the pouch young do not affect the time of reactivation of the quiescent corpus luteum and diapause embryo in bettongia penicillata; these observations led to the suggestion that the corpus luteum may have an inherent maximum duration of quiescence. the aim of the present study was to investigate the effect of the age of the corpus luteum on the timing of its reactivation. ovulation fails to occur post partum in female b. penicillata i ... | 1996 | 8870101 |
| hormones of oestrus and ovulation and their manipulation in marsupials. | oestrus and ovulation occur spontaneously in the majority of marsupials, with behavioural oestrus usually occurring 1-2 days before ovulation. the hormone changes that occur at this time have been described in the most detail for the monovular tammar wallaby macropus eugenii. the respective roles of the graafian follicle, corpus luteum and the pituitary in the events leading up to oestrus and ovulation in this species are also reviewed. recently, various protocols have been developed for superov ... | 1996 | 8870088 |
| cytoplasmic maturation of the marsupial oocyte during the periovulatory period. | during the period immediately before ovulation, the oocytes of most eutherian and marsupial mammals complete the first meiotic maturation division and extrude the first polar body. in marsupials, this phase of nuclear maturation is accompanied by an increase in size of the egg and maturation of cytoplasmic components. oocytes from at least four marsupial species, trichosurus vulpecula, macropus eugenii, bettongia penicillata and monodelphis domestica, continue to grow after formation of the foll ... | 1996 | 8870076 |
| male-induced oestrus and ovulation in female brush-tailed bettongs (bettongia penicillata) suckling a young in the pouch. | female brush-tailed bettongs isolated from males usually do not come into oestrus or ovulate. individuals isolated during pregnancy and at parturition do not ovulate post partum and are in the unusual condition for a macropodoid of suckling a pouch young but lacking a quiescent corpus luteum or a diapause embryo. females in this condition were tested for their ability to come into oestrus and to ovulate after re-introduction to the male. when returned to the male on day 1 of lactation, females g ... | 1994 | 7878220 |
| unexpected oocyte growth after follicular antrum formation in four marsupial species. | during examination of maturing preovulatory marsupial oocytes we noted that oocyte diameters were invariably about 50% greater than the figures reported in earlier histological studies. as all previous investigations were limited to small follicles (at most 25% the size of the ovulating follicle), the present study was initiated to examine oocyte growth during the whole period of follicular development. oocyte and follicle diameters were measured for three australian (trichosurus vulpecula, macr ... | 1992 | 1339855 |
| evidence from plasma progesterone concentrations for male-induced ovulation in the brush-tailed bettong, bettongia penicillata. | female brush-tailed bettongs, bettongia penicillata, were housed with either an intact or vasectomized male or isolated from males in the peripartum period. development of the quiescent corpus luteum formed at the post partum oestrus was initiated by removing the pouch young. blood samples for analysis of plasma progesterone were collected from the females 2 days before removal of pouch young, daily for 5 or 6 days and then 2-3 times each week until 19 days after removal of pouch young. plasma p ... | 1992 | 1625245 |
| evidence from the oestrous cycle for male-induced ovulation in bettongia penicillata (marsupialia). | female brush-tailed bettongs (bettongia penicillata) housed in a breeding group of one male and one to three females had an average gestation period of 21.2 days (n = 58) and parturition was followed within 24 h by oestrus and mating. if a young was not born as a result of the mating, oestrus recurred after about 21.7 days (n = 12). from removal of pouch young to birth was 17.5 days, on average (n = 85), in females that had mated post partum, but most females that were isolated from a male befor ... | 1992 | 1625244 |
| identification of a novel species of eimeria schneider, 1875 from the woylie, bettongia penicillata gray (diprotodontia: potoroidae) and the genetic characterisation of three eimeria spp. from other potoroid marsupials. | faecal samples (n = 1,093) collected from the woylie bettongia penicillata gray, in south-western australia were examined for the presence of coccidian parasites. eimeria sp. oöcysts were detected in 15.2% of samples. faecal samples obtained from the eastern bettong bettongia gaimardi (desmarest) (n = 4) and long-nosed potoroo potorous tridactylus (kerr) (n = 12) in tasmania, were also screened for the presence of eimeria spp. (prevalence 50% and 41.7%, respectively). morphological and genetic c ... | 2019 | 31332672 |
| next generation sequencing reveals widespread trypanosome diversity and polyparasitism in marsupials from western australia. | in western australia a number of indigenous trypanosoma spp. infect susceptible native marsupials, such as the woylie (bettongia penicillata), brushtail possum (trichosurus vulpecula), and chuditch (dasyurus geoffroii). two genotypes of trypanosoma copemani (identified as g1 and g2) have been found in the woylie, and g2 has been implicated in the decline of this host species, making its presence of particular interest. here we used targeted amplicon next generation sequencing (ngs) of the trypan ... | 2018 | 29988778 |
| altered parasite community structure in an endangered marsupial following translocation. | fauna translocations play an integral role in the management of threatened wildlife, though we are limited by our understanding of how the host-parasite community changes during translocation. during this longitudinal field-based study, we monitored gastrointestinal, blood-borne and ectoparasite taxa infecting woylies (bettongia penicillata) for up to 12 months following two fauna translocations to supplement existing wild woylie populations in three different sites (dryandra, walcott and warrup ... | 2019 | 31334028 |
| increased trypanosoma spp. richness and prevalence of haemoparasite co-infection following translocation. | understanding how fauna translocation and antiparasitic drug treatment impact parasite community structure within a host is vital for optimising translocation outcomes. trypanosoma spp. and piroplasms (babesia and theileria spp.) are known to infect australian marsupials, including the woylie (bettongia penicillata). however relatively little is known about these haemoparasites, or how they respond to management practices such as translocation. we monitored haemoparasites infecting woylies for u ... | 2019 | 30898141 |
| augmenting the conservation value of rehabilitated wildlife by integrating genetics and population modeling in the post-rehabilitation decision process. | insular populations are particularly vulnerable to the effects of stochastic events, epidemics, and loss of genetic diversity due to inbreeding and genetic drift. the development of successful management options will require accurate baseline data, establishment of clear objectives, and finally monitoring and implementation of corrective measures, if and when required. this study assessed management options for the genetic rehabilitation of highly inbred woylies obtained from wildlife rehabilita ... | 2018 | 30323838 |
| debilitating disease in a polyparasitised woylie (bettongia penicillata): a diagnostic investigation. | during monitoring of critically endangered woylie (bettongia penicillata) populations within the south-west of western australia, an adult female woylie was euthanased after being found in extremely poor body condition with diffuse alopecia, debilitating skin lesions and severe ectoparasite infestation. trypanosoma copemani g2 and sarcocystis sp. were detected molecularly within tissue samples collected post-mortem. potorostrongylus woyliei and paraustrostrongylus sp. nematodes were present with ... | 2018 | 30094176 |
| trypanosome co-infections increase in a declining marsupial population. | understanding the impacts of parasites on wildlife is growing in importance as diseases pose a threat to wildlife populations. woylie (syn. brush-tailed bettong, bettongia penicillata) populations have undergone enigmatic declines in south-western western australia over the past decade. trypanosomes have been suggested as a possible factor contributing towards these declines because of their high prevalence in the declining population. we asked whether temporal patterns of infection with trypano ... | 2018 | 29942738 |
| the kinetoplast dna of the australian trypanosome, trypanosoma copemani, shares features with trypanosoma cruzi and trypanosoma lewisi. | kinetoplast dna (kdna) is the mitochondrial genome of trypanosomatids. it consists of a few dozen maxicircles and several thousand minicircles, all catenated topologically to form a two-dimensional dna network. minicircles are heterogeneous in size and sequence among species. they present one or several conserved regions that contain three highly conserved sequence blocks. csb-1 (10 bp sequence) and csb-2 (8 bp sequence) present lower interspecies homology, while csb-3 (12 bp sequence) or the un ... | 2018 | 29778329 |