| species of cloacina linstow, 1898 (nematoda: strongyloidea) from the black-tailed wallaby, wallabia bicolor (desmarest, 1804) from eastern australia. | species of cloacina linstow, 1898 (nematoda: strongyloidea) are reported and/or described from the stomach of the macropodid marsupial wallabia bicolor (desmarest, 1804) collected in eastern australia. nematodes were examined from 26 hosts collected in 3 states and the number of species of cloacina in any one host was 2--7. the following species were encountered: c. wallabiae johnston and mawson, 1939, c. gallardi johnston and mawson, 1940, c. edwardsi mawson, 1972 and c. cornuta (davey and wood ... | 1979 | 541500 |
| 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 |
| parasites and associated pathology of the swamp wallaby, wallabia bicolor (marsupialia). | thirty-five swamp wallabies from victoria, new south wales and queensland, australia were examined for parasites. thirty-nine species of nematodes, five species of cestodes and eight species of arthropods were found. wallabies from queensland and northern new south wales had a less diverse helminth fauna (23 species) than did wallabies from southern new south wales and victoria (32 species). rugopharynx spp. and cloacina spp. occurred in large numbers in the stomach but provoked no pathological ... | 1985 | 4078972 |
| 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 |
| nmr studies of diffusional water permeability of red blood cells from macropodid marsupials (kangaroos and wallabies). | 1. the water permeabilities of the red blood cell (rbc) membranes of five species of macropodid marsupials were monitored by using a mn(2+)-doping 1h nuclear magnetic resonance (nmr) technique. 2. since this appears to be the first time that this type of measurement at 400 mhz for 1h has been reported, an analysis of instrumental parameters influencing the estimated value of the water exchange time (te), and of the diffusional water permeability (pd), was performed on samples of human rbc. 3. it ... | 1993 | 8097985 |
| isolation and characterization of marsupial il5 genes. | the genomic nucleotide sequence and chromosomal position of the interleukin 5 (il5) gene has been described for the model marsupial macropus eugenii (tammar wallaby). a 272 base pair genomic il5 polymerase chain reaction (pcr) product spanning exon 3, intron 3, and exon 4 was generated using stripe-faced dunnart (sminthopsis macroura) dna. this pcr product was used to isolate a genomic lambda clone containing the complete il5 gene from a tammar wallaby embl3 lambda library. sequencing revealed t ... | 1999 | 10501836 |
| effects of p-chloromercuribenzene sulfonate on water transport across the marsupial erythrocyte membrane. | the effects of exposure of red blood cells (rbc) of three species of marsupial to a mercury-containing sulfhydryl-modifying reagent, p-chloromercuribenzene sulfonate (pcmbs), on the water diffusional permeability ( p (d)) of their membranes were monitored by using an mn(2+)-doping (1)h nuclear magnetic resonance (nmr) technique at 400 mhz. for koala ( phascolarctos cinereus), rbc the maximal inhibition was reached at 37 degrees c in 60 min with 1 mmol.l(-1) pcmbs or in 15-30 min with 2 mmol. l(- ... | 2002 | 12192513 |
| four new species of macropodinium (ciliophora: litostomatea) from australian wallabies and pademelons. | samples of macropodinium spp. were collected from 3 new macropodid species: from 21 of 28 (75%) black-striped wallabies (macropus dorsalis); 10 of 11 (91%) swamp wallabies (wallabia bicolor); and 22 of 43 (51%) tasmanian pademelons (thylogale billardierii). the examination of ciliate morphology by silver impregnation and scanning electron microscopy led to the redescription of the genus macropodinium and the description of 4 new species: ma. tricresta sp. nov. and ma. spinosus sp. nov. from m. d ... | 2001 | 11596919 |
| sarcoptic mange in a wild swamp wallaby (wallabia bicolor). | a wild adult male swamp wallaby from victoria was found to be infested with sarcoptes scabiei. hyperkeratotic skin lesions were confined predominantly to the head and shoulders. this is the first report of sarcoptic mange in a swamp wallaby. | 2011 | 22008126 |
| echinococcus granulosus in northern queensland. 2. ecological determinants of infection in beef cattle. | to provide information on possible ecological determinants of infection with echinococcus granulosus in a beef pastoral area of northern queensland. | 2006 | 16958625 |
| a new lineage of trypanosomes from australian vertebrates and terrestrial bloodsucking leeches (haemadipsidae). | little is known about the trypanosomes of indigenous australian vertebrates and their vectors. we surveyed a range of vertebrates and blood-feeding invertebrates for trypanosomes by parasitological and pcr-based methods using primers specific to the small subunit ribosomal rna (ssu rrna) gene of genus trypanosoma. trypanosome isolates were obtained in culture from two common wombats, one swamp wallaby and an australian bird (strepera sp.). by pcr, blood samples from three wombats, one brush-tail ... | 2005 | 15777919 |
| interspecific and geographic variation in the diets of sympatric carnivores: dingoes/wild dogs and red foxes in south-eastern australia. | dingoes/wild dogs (canis dingo/familiaris) and red foxes (vulpes vulpes) are widespread carnivores in southern australia and are controlled to reduce predation on domestic livestock and native fauna. we used the occurrence of food items in 5875 dingo/wild dog scats and 11,569 fox scats to evaluate interspecific and geographic differences in the diets of these species within nine regions of victoria, south-eastern australia. the nine regions encompass a wide variety of ecosystems. diet overlap be ... | 2015 | 25790230 |
| analyses of mitochondrial amino acid sequence datasets support the proposal that specimens of hypodontus macropi from three species of macropodid hosts represent distinct species. | hypodontus macropi is a common intestinal nematode of a range of kangaroos and wallabies (macropodid marsupials). based on previous multilocus enzyme electrophoresis (mee) and nuclear ribosomal dna sequence data sets, h. macropi has been proposed to be complex of species. to test this proposal using independent molecular data, we sequenced the whole mitochondrial (mt) genomes of individuals of h. macropi from three different species of hosts (macropus robustus robustus, thylogale billardierii an ... | 2013 | 24261823 |
| hypodontus macropi mönnig, 1929, a hookworm-like parasite of macropodid marsupials. | hypodontus macropi mönnig, 1929, is redescribed and its taxonomic affinities discussed. h. macropi is recorded for the first time from wallabia bicolor, macropus robustus, m. fuliginosus, m. dorsalis, m. agilis and thylogale billardierii. the method of attachment of the parasite and gross and histopathological changes associated with it are described. free living larval stages are described. experimental infestations were attempted but were not successful. hypodontus thetidis johnston and mawson ... | 1979 | 575542 |
| follow your nose: leaf odour as an important foraging cue for mammalian herbivores. | studies of odour-driven foraging by mammals focus on attractant cues emitted by flowers, fruits, and fungi. yet, the leaves of many plant species worldwide produce odour, which could act as a cue for foraging mammalian herbivores. leaf odour may thus improve foraging efficiency for such herbivores in many ecosystems by reducing search time, particularly but not only, for plants that are visually obscured. we tested the use of leaf odour by a free-ranging mammalian browser, the swamp wallaby (wal ... | 0 | 27368609 |
| macropodicoptes mironovi n. g., n. sp. (acariformes: sarcoptidae), a new mange mite from wallabia bicolor (desmarest) (diprotodonia: macropodidae). | a new mange mite species, macropodicoptes mironovi n. g., n. sp. (acariformes: sarcoptidae), is described from wallabia bicolor (desmarest) (diprotodontia: macropodidae) from the taronga western plains zoo at dubbo, nsw, australia. this is the fourth species and third genus allocated to the sarcoptid subfamily diabolicoptinae, whose representatives exclusively parasitise marsupials. the new genus differs from diabolicoptes fain & domrow, 1974, in both sexes, by the proportions of the gnathosoma, ... | 2012 | 22890378 |
| livestock guardian dogs as surrogate top predators? how maremma sheepdogs affect a wildlife community. | use of livestock guardian dogs (lgds) to reduce predation on livestock is increasing. however, how these dogs influence the activity of wildlife, including predators, is not well understood. we used pellet counts and remote cameras to investigate the effects of free ranging lgds on four large herbivores (eastern gray kangaroo, common wombat, swamp wallaby, and sambar deer) and one mesopredator (red fox) in victoria, australia. generalized mixed models and one- and two-species detection models we ... | 2016 | 27777741 |
| 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 |
| oxalate toxicity in a scaly-tailed possum, a patagonian cavy and a swamp wallaby. | | 1983 | 6644930 |
| seroprevalence of retrovirus in north american captive macropodidae. | laboratory records of serology results from captive macropodidae sampled between 1997 and 2005 were reviewed to assess the seroprevalence of retrovirus exposure. serum samples from 269 individuals (136 males, 133 females) representing 10 species of macropods housed in 31 north american captive collections were analyzed for retrovirus antibody using an indirect immunofluorescent assay. the prevalence of positive antibody titers comparing male versus female, between species, between age groups, an ... | 2008 | 18816994 |
| genetic variation in the mitochondrial cytochrome c oxidase subunit 1 within three species of progamotaenia (cestoda: anoplocephalidae) from macropodid marsupials. | sequence variation within 3 morphologically defined species of the anoplocephalid cestode genus progamotaenia (p. ewersi, p. macropodis and p. zschokkei) was investigated using the cytochrome c oxidase subunit 1 gene. the magnitude of genetic variation detected within each morphospecies suggests that, in each instance, several cryptic species are present. within p. ewersi, 5 genetically distict groups of cestodes were detected, 1 shared by macropus robustus and m. parryi in queensland, 1 in m. a ... | 2005 | 15700763 |
| speciation in the genus cloacina (nematoda: strongylida): species flocks and intra-host speciation. | sequences of the first and second internal transcribed spacers (its1 + its2) of nuclear ribosomal dna were employed to determine whether the congeneric assemblages of species of the strongyloid nematode genus cloacina, found in the forestomachs of individual species of kangaroos and wallabies (marsupialia: macropodidae), considered to represent species flocks, were monophyletic. nematode assemblages examined in the black-striped wallaby, macropus (notamacropus) dorsalis, the wallaroos, macropus ... | 2017 | 28697818 |
| resolving kangaroo phylogeny and overcoming retrotransposon ascertainment bias. | reconstructing phylogeny from retrotransposon insertions is often limited by access to only a single reference genome, whereby support for clades that do not include the reference taxon cannot be directly observed. here we have developed a new statistical framework that accounts for this ascertainment bias, allowing us to employ phylogenetically powerful retrotransposon markers to explore the radiation of the largest living marsupials, the kangaroos and wallabies of the genera macropus and walla ... | 2017 | 29196678 |
| undermethylation associated with retroelement activation and chromosome remodelling in an interspecific mammalian hybrid. | genetic models predict that genomic rearrangement in hybrids can facilitate reproductive isolation and the formation of new species by preventing gene flow between the parent species and hybrid (sunflowers are an example). the mechanism underlying hybridization-induced chromosome remodelling is as yet unknown, although mobile element activity has been shown to be involved in dna rearrangement in some dysgenic drosophila hybrids. it has been proposed that dna methylation evolved as a means of rep ... | 1998 | 9590690 |
| comparative chromosome painting between two marsupials: origins of an xx/xy1y2 sex chromosome system. | cross-species chromosome painting was used to investigate genome rearrangements between tammar wallaby macropus eugenii (2n = 16) and the swamp wallaby wallabia bicolor (2n = 10female symbol/11male symbol), which diverged about 6 million years ago. the swamp wallaby has an xx female:xy1y2 male sex chromosome system thought to have resulted from a fusion between an autosome and the small original x, not involving the y. thus, the small y1 should represent the original y and the large y2 the origi ... | 1997 | 9166586 |
| embryonic diapause in marsupials. | amongst the marsupials embryonic diapause has been regarded as a characteristic of the family macropodidae, since it has been described in all but one of the 20 or so kangaroos and wallabies examined. diapause has not been demonstrated unequivocally in other marsupials, although the non-macropodids cercartetus and acrobates have uncertain status in this regard. recently, however, diapause has been described in the non-macropodid tarsipes. diapause in macropodid marsupials may be obligate or facu ... | 1981 | 7014870 |
| dental fluorosis and skeletal fluoride content as biomarkers of excess fluoride exposure in marsupials. | particulate and gaseous fluoride emissions contaminate vegetation near fluoride-emitting industries, potentially impacting herbivorous wildlife in neighboring areas. dental fluorosis has been associated with consumption of fluoride-contaminated foliage by juvenile livestock and wildlife in europe and north america. for the first time, we explored the epidemiology and comparative pathology of dental fluorosis in australian marsupials residing near an aluminium smelter. six species (macropus gigan ... | 2015 | 26188404 |
| on the nature of the opaque and translucent enamel regions of some macropodinae (macropus giganteus, wallabia bicolor and peradorcas concinna). | teeth of three macropod species, m. giganteus, w. bicolor and p. concinna, have been studied using the techniques of light microscopy, scanning- and transmission-electron microscopy and hardness measurement. light microscope observations showed that the teeth of these species had a translucent enamel region close to the dentine and an outer opaque enamel region at the tooth's surface. these regions were not related to the presence or absence of tubules which are a characteristic feature of marsu ... | 1984 | 6509511 |
| inferring kangaroo phylogeny from incongruent nuclear and mitochondrial genes. | the marsupial genus macropus includes three subgenera, the familiar large grazing kangaroos and wallaroos of m. (macropus) and m. (osphranter), as well as the smaller mixed grazing/browsing wallabies of m. (notamacropus). a recent study of five concatenated nuclear genes recommended subsuming the predominantly browsing wallabia bicolor (swamp wallaby) into macropus. to further examine this proposal we sequenced partial mitochondrial genomes for kangaroos and wallabies. these sequences strongly f ... | 2013 | 23451266 |
| apparent lack of genetic variation within pelecitus roemeri (nematoda: filarioidea) from three australian species of macropodid marsupial. | an electrophoretic study of pelecitus roemeri from macropus robustus, m. giganteus and wallabia bicolor revealed no genetic differences at 23 enzyme loci. the genetic data support the existing morphological evidence that p. roemeri from these three hosts represents a single species. the data show no genetic variation between nematodes from the same or different host species collected in northern and southern australia. this result is discussed briefly in relation to price's model of parasite spe ... | 1992 | 1459780 |
| ecological specialisation in habitat selection within a macropodid herbivore guild. | specialist species show stronger resource selection, narrower niches and lower niche overlap than generalist species. we examined ecological specialisation with respect to habitat selection in a macropodid community comprising the western grey kangaroo macropus fuliginosus, red-necked wallaby m. rufogriseus and swamp wallaby wallabia bicolor in the grampians national park, victoria, australia. we used radio tracking to quantify habitat selection. we predicted that because the fitness benefits of ... | 2016 | 26621691 |
| skeletal fluorosis in marsupials: a comparison of bone lesions in six species from an australian industrial site. | in this study we explored the prevalence, type, location and severity of skeletal lesions in six species of australian marsupial (macropus giganteus, notamacropus rufogriseus, wallabia bicolor, phascolarctos cinereus, trichosurus vulpecula and pseudocheirus peregrinus) from high and low-fluoride environments. lesions occurred to varying extents in all species, and lesion distribution varied with biomechanical differences in gait and mastication. bone fluoride levels increased with severity of pe ... | 2017 | 28185728 |
| interspecific variation in the diets of herbivores in an industrial environment: implications for exposure to fluoride emissions. | atmospheric fluorides (gaseous and particulate) are deposited on, and absorbed by, vegetation. ingested fluoride accumulates in calcified tissues of vertebrates, and if it is excessive, it may lead to dental and skeletal fluorosis. the prevalence, form and severity of the effects vary greatly between species. foraging strategy can be an important determinant of fluoride exposure in herbivores, because foliar fluoride concentrations vary between plant species, for example, according to vertical a ... | 2016 | 26873827 |
| the distribution of sces within and between the genomes of an interspecific hybrid. | the distribution of sister chromatid exchanges has been examined in the chromosomes of a hybrid male wallaby (macropus rufogriseus female x wallabia bicolor male), and in the x chromosomes of m. parryi and m. rufus. comparisons were made of sce frequency between the two genomes of the hybrid, only one of which has an appreciable amount of constitutive heterochromatin, and between he euchromatic and heterochromatic regions of the m. rufogriseus genome. the frequency of sces is closely correlated ... | 1981 | 7327045 |
| factors affecting the frequency and pattern of mitomycin c-induced chromatid exchanges. | data are reported on the frequency and pattern of mitomycin c-induced exchanges in lymphocytes of a marsupial hybrid macropus rufogriseus female x wallabia bicolor male and in four individuals, two male and two female, of m. rufogriseus. in the hybrid, exchanges are found almost exclusively between the m. rufogriseus chromosomes and the breakpoints are in the c-banded pericentromeric regions. in the four m. rufogriseus animals the data show no evidence for preferential exchanges between homologu ... | 1980 | 7389514 |
| comparative finite element analysis of the cranial performance of four herbivorous marsupials. | marsupial herbivores exhibit a wide variety of skull shapes and sizes to exploit different ecological niches. several studies on teeth, dentaries, and jaw adductor muscles indicate that marsupial herbivores exhibit different specializations for grazing and browsing. no studies, however, have examined the skulls of marsupial herbivores to determine the relationship between stress and strain, and the evolution of skull shape. the relationship between skull morphology, biomechanical performance, an ... | 2015 | 26193997 |
| genetic variation within and among species of cloacina (strongyloidea: cloacinine) from the swamp wallaby, wallabia bicolor (marsupialia: macropodidae). | this study examined genetic variation within and among species of cloacina found in the swamp wallaby (wallabia bicolor) collected at different localities along the eastern coast of australia, and evaluated geographical distance as a potential driver for genetic variation. the first and second internal transcribed spacers (its-1 and its-2, respectively) of the nuclear ribosomal dna were used to characterize individuals of 11 morphospecies of cloacina that parasitize w. bicolor. the results of th ... | 2014 | 25281208 |
| quantifying the response of free-ranging mammalian herbivores to the interplay between plant defense and nutrient concentrations. | while trying to achieve their nutritional requirements, foraging herbivores face the costs of plant defenses, such as toxins. teasing apart the costs and benefits of various chemical constituents in plants is difficult because their chemical defenses and nutrient concentrations often co-vary. we used an approach derived from predator-prey studies to quantitatively compare the foraging response of a free-ranging mammalian herbivore, the swamp wallaby (wallabia bicolor), through three feeding tria ... | 2014 | 24924590 |
| retrospective study of oral necrobacillosis in 54 swamp wallabies. | | 2013 | 23839727 |
| jejunal pseudodiverticulosis in a swamp wallaby (wallabia bicolor). | necropsy examination of an 8-year-old female swamp wallaby (wallabia bicolor) from a zoological garden revealed four intestinal diverticular outpouchings at the mesenteric border of the jejunum, which were partly ruptured causing a fatal peritonitis. microscopically, affected small intestinal segments were characterized by an abrupt gap in the muscular layer with subsequent herniation of respective mucosal and submucosal layers, interpreted as acquired pseudodiverticula. multifocal perforations ... | 2012 | 22717131 |
| ectoparasitic dermatitis in free-ranging swamp wallabies (wallabia bicolor) in new south wales. | we report extensive dermatological lesions in three, free-ranging, adult, male swamp wallabies (wallabia bicolor), presented to taronga western plains zoo wildlife hospital. all three animals were moderately infested with the louse species heterodoxus ualabati, and two were concurrently infested with a previously undescribed sarcoptiform mite of the genus diabolicoptes. histological changes included moderate to marked compact hyperkeratosis, focal deep pyoderma and superficial dermatophytosis. m ... | 2009 | 19335473 |
| antibiotic intravenous regional perfusion for successful resolution of distal limb infections: two cases. | intravenous regional perfusion is a common technique for treating infections of the extremities in humans and horses. it has the advantage of achieving very high antibiotic concentrations in affected tissues. this technique was used to clinically resolve deep, mixed infections involving bones and joints in a swamp wallaby and a lesser kudu. both infections were severe and considered life-threatening, because amputation was not feasible, systemic antibiotic treatment had failed, and both animals ... | 2008 | 18817008 |
| reproduction in male swamp wallabies (wallabia bicolor): puberty and the effects of season. | this study describes pubertal changes in testes and epididymides and seasonal changes in the adult male reproductive organs and plasma androgen concentrations of the swamp wallaby (wallabia bicolor). pre-pubescent males had testes with solid seminiferous cords and spermatogenesis only to the stage of gonocytes. their epididymides had empty lumina along their entire length. the testes of three males undergoing puberty had some lumen formation and mitotic activity. their epididymides were similar ... | 2007 | 17764525 |
| reproduction in female swamp wallabies, wallabia bicolor. | the swamp wallaby (wallabia bicolor) is a common, medium-sized, browsing macropodid marsupial that is unique in many ways. relatively little is known about the reproductive biology of this species. previous studies have proposed that the swamp wallaby has a pre-partum oestrus because the gestation period (x = 35.5 days, n = 4) is on average longer than the oestrus period (x = 31.0 days, n = 5) and the period from the removal of pouch young (rpy) to mating (x = 26.0 days, n = 3). in the current s ... | 2006 | 17032581 |
| mapping the distribution of the telomeric sequence (t2ag3)n in the macropodoidea (marsupialia), by fluorescence in situ hybridization. i. the swamp wallaby, wallabia bicolor. | thylogale spp. (pademelons) retain the plesiomorphic (ancestral) 2n = 22 karyotype for the marsupial family macropodidae (kangaroos and wallabies). the swamp wallaby, wallabia bicolor, has the most derived macropodid karyotype with the lowest chromosome number (2n = 10 female, 11 male), and a multiple sex chromosome system (xx female, xy1y2 male). all but one of the w. bicolor chromosomes are fusion chromosomes. two of these chromosomes, the x chromosome and chromosome 1, are composed of three p ... | 1998 | 10099873 |
| chromosomal aberrations in three successive cell cycles of wallabia bicolor leukocytes after tritiated thymidine incorporation. | | 1975 | 1110970 |
| comparison of sister chromatid exchanges from three successive cell cycles in wallabia bicolor chromosomes. | | 1974 | 4838137 |
| chromatid distribution at mitosis in cultured wallabia bicolor cells. | | 1973 | 4788956 |
| toxoplasmosis in a swamp wallaby. | | 1957 | 13480909 |
| speciation generates mosaic genomes in kangaroos. | the iconic australasian kangaroos and wallabies represent a successful marsupial radiation. however, the evolutionary relationship within the two genera, macropus and wallabia, is controversial: mitochondrial and nuclear genes, and morphological data have produced conflicting scenarios regarding the phylogenetic relationships, which in turn impact the classification and taxonomy. we sequenced and analyzed the genomes of 11 kangaroos to investigate the evolutionary cause of the observed phylogene ... | 2018 | 29182740 |
| leaf odour cues enable non-random foraging by mammalian herbivores. | searching for food is the first critical stage of foraging, and search efficiency is enhanced when foragers use cues from foods they seek. yet we know little about food cues used by one major group of mammals, the herbivores, a highly interactive component of most ecosystems. how herbivores forage and what disrupts this process, both have significant ecological and evolutionary consequences beyond the animals themselves. our aim was to investigate how free-ranging mammalian herbivores exploit le ... | 2017 | 28833142 |
| roles of the volatile terpene, 1,8-cineole, in plant-herbivore interactions: a foraging odor cue as well as a toxin? | olfaction is an important sense for many animals, yet its role in foraging by herbivores is poorly known. many plants contain volatile compounds, such as terpenes, that are not only volatile but can be toxic if ingested. volatile terpenes can be used by herbivores to assess leaf quality, but there is little evidence for whether they are also used as a searching cue. we applied the giving-up density (gud) framework to examine fine-scale foraging by two free-ranging mammalian herbivores, the brush ... | 2014 | 24122179 |
| hydrological features and the ecological niches of mammalian hosts delineate elevated risk for ross river virus epidemics in anthropogenic landscapes in australia. | the current understanding of the landscape epidemiology of ross river virus (rrv), australia's most common arthropod-borne pathogen, is fragmented due to gaps in surveillance programs and the relatively narrow focus of the research conducted to date. this leaves public health agencies with an incomplete understanding of the spectrum of infection risk across the diverse geography of the australian continent. the current investigation sought to assess the risk of rrv epidemics based on abiotic and ... | 2018 | 29554980 |
| sequence analyses at mitochondrial and nuclear loci reveal a novel theileria sp. and aid in the phylogenetic resolution of piroplasms from australian marsupials and ticks. | the order piroplasmida encompasses two main families: babesiidae and theileriidae, containing tick-borne pathogens of veterinary and medical importance worldwide. while only three genera (babesia, cytauxzoon and theileria) comprising piroplasm parasites are currently recognised, phylogenetic studies at the 18s rrna (18s) gene suggest that these organisms represent at least ten lineages, one of which comprises the relatively unique and highly diverse theileria spp. from australian marsupials and ... | 2019 | 31851687 |
| 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 |
| the power of odour cues in shaping fine-scale search patterns of foraging mammalian herbivores. | foraging by mammalian herbivores has profound impacts on natural and modified landscapes, yet we know little about how they find food, limiting our ability to predict and manage their influence. mathematical models show that foragers exploiting odour cues outperform a random walk strategy. however, discovering how free-ranging foragers exploit odours in real, complex landscapes has proven elusive because of technological constraints. we took a novel approach, using a sophisticated purpose-built ... | 2020 | 32673541 |
| multiplex pcrs for the specific identification of marsupial and deer species from faecal samples as a basis for non-invasive epidemiological studies of parasites. | the specific identification of animals through the analysis of faecal dna is important in many areas of scientific endeavour, particularly in the field of parasitology. | 2020 | 32188474 |
| unique reproductive strategy in the swamp wallaby. | reproduction in mammals requires distinct cycles of ovulation, fertilization, pregnancy, and lactation often interspersed with periods of anoestrus when breeding does not occur. macropodids, the largest extant species of marsupials, the kangaroos and wallabies, have a very different reproductive strategy to most eutherian mammals whereby young are born at a highly altricial stage of development with the majority of development occurring over a lengthy lactation period. furthermore, the timings o ... | 2020 | 32123078 |
| circadian rhythms enable efficient resource selection in a human-modified landscape. | animals access resources such as food and shelter, and acquiring these resources has varying risks and benefits, depending on the suitability of the landscape. some animals change their patterns of resource selection in space and time to optimize the trade-off between risks and benefits. we examine the circadian variation in resource selection of swamp wallabies (wallabia bicolor) within a human-modified landscape, an environment of varying suitability. we used gps data from 48 swamp wallabies t ... | 2019 | 31346419 |
| genetic variation within the genus macropostrongyloides (nematoda: strongyloidea) from australian macropodid and vombatid marsupials. | the genetic variation and taxonomic status of the four morphologically-defined species of macropostrongyloides in australian macropodid and vombatid marsupials were examined using sequence data of the its+ region (=first and second internal transcribed spacers, and the 5.8s rrna gene) of the nuclear ribosomal dna. the results of the phylogenetic analyses revealed that ma. baylisi was a species complex consisting of four genetically distinct groups, some of which are host-specific. in addition, m ... | 2019 | 31397236 |
| new operational taxonomic units of enterocytozoon in three marsupial species. | enterocytozoon bieneusi is a microsporidian, commonly found in animals, including humans, in various countries. however, there is scant information about this microorganism in australasia. in the present study, we conducted the first molecular epidemiological investigation of e. bieneusi in three species of marsupials (macropus giganteus, vombatus ursinus and wallabia bicolor) living in the catchment regions which supply the city of melbourne with drinking water. | 2018 | 29954462 |
| chronic excess fluoride uptake contributes to degenerative joint disease (djd): evidence from six marsupial species. | one of the manifestations of chronic fluoride toxicosis in mammals is skeletal fluorosis, which can include lesions of degenerative joint disease (djd). although djd lesions have been less commonly studied than bone or dental lesions in relation to the pathology and epidemiology of fluoride toxicosis, there have been multiple independent studies in various species that have concluded that there appears to be an effect. the mechanisms by which fluoride affects the joints are not clear, but our da ... | 2018 | 30015183 |