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isolation, partial sequence and asynchronous appearance during lactation of lysozyme and alpha-lactalbumin in the milk of a marsupial, the common ringtail possum (pseudocheirus peregrinus).1. lysozyme and alpha-lactalbumin from the milk of the common ringtail possum have been purified and partially sequenced. 2. the lysozyme had similar enzymic activity to the c-type lysozyme of the domestic hen and 43% homology over the n-terminal 49 residues. 3. alpha-lactalbumin was present in the milk in two biologically active forms; the more acidic form had 66% sequence homology with the n-terminal 35 residues of red-necked wallaby, 54% with human and 43% with bovine alpha-lactalbumin. 4. sd ...19892605916
angiostrongylus cantonesis infection of the brain of a captive bennett's wallaby (macropus rufogriseus).eleven immature adult angiostrongylus cantonensis were recovered from beneath the meninges of a captive bennett's wallaby (macropus rufogriseus) which died after displaying posterior paresis followed by paralysis and intermittent opisthotonic spasms of increasing frequency for 7 days. congestion and focal malacia with haemorrhage were seen in the brainstem and cerebellum. sections of worms with scanty inflammatory response were seen beneath the congested haemorrhagic leptomeninges of cerebrum an ...1978655984
observations on the treatment of necrobacillosis in wallabies.clinical experience of 73 cases of necrobacillosis in red-necked wallabies (macropus rufogriseus) over a 6-year period is reviewed. diagnostic methods and the medical and surgical treatment options are detailed. it is suggested that survival curves are necessary to assess the outcome of treatment.19892775989
serodiagnosis of acute toxoplasmosis in macropods.the sera of 34 australian macropods, the brains of which had been bioassayed for toxoplasma gondii, were used to establish that a titre greater than 1/32 was significant for a direct agglutination test against toxoplasmosis. in addition, the concentration of 2-mercaptoethanol required to destroy the igm fraction of macropod serum was confirmed in a modified direct agglutination test. to further validate the tests, the serological responses of three eastern grey kangaroos (macropus giganteus) dos ...19892588468
the amino-acid sequence of kangaroo pancreatic ribonuclease.red kangaroo (macropus rufus) ribonuclease was isolated from pancreatic tissue by affinity chromatography. the amino acid sequence was determined by automatic sequencing of overlapping large fragments and by analysis of shorter peptides obtained by digestion with a number of proteolytic enzymes. the polypeptide chain consists of 122 amino acid residues. compared to other ribonucleases, the n-terminal residue and residue 114 are deleted. in other pancreatic ribonucleases position 114 is occupied ...1978658039
pharmacokinetics of oxytetracycline in clinical cases in the red-necked wallaby (macropus rufogriseus).oxytetracycline, administered at 40 mg kg-1 by intravenous injection, was used as part of the treatment of three female red-necked wallabies, macropus rufogriseus, with suspected fusobacterium necrophorum infections. the plasma concentrations of this drug in blood samples collected at intervals up to 24 hours after administration were measured using a biological assay. the pattern of decline in plasma oxytetracycline concentration with time was consistent with a two-compartment model. the half-l ...19883406529
prevalence of toxoplasma gondii antibody in wild macropods.an enzyme-linked immunosorbent assay (elisa) was developed to measure total antibody to toxoplasma gondii in serum samples from macropods. the validity of the assay was established by comparing parasite isolation in mice for 17 tasmanian pademelons (thylogale billardierii) and 17 bennett's wallabies (macropus rufogriseus rufogriseus). the elisa was then used to detect antibody against t. gondii in serum from 236 macropods, collected from 21 locations in tasmania, including flinders island. antib ...19883421883
provisional mapping of the gene for a cell surface marker, ga-1, in the red-necked wallaby macropus rufogriseus.a series of m. rufogriseus-mouse somatic cell hybrids was constructed and analysed cytologically, enzymatically and immunologically. a monoclonal antibody, ga-1, was prepared against an m. rufogriseus cell surface antigen on an m. rufogriseus-mouse somatic cell hybrid. a gene determining the expression of this antigen was provisionally assigned to the long arm of the m. rufogriseus chromosome 3. the monoclonal antibody also reacted with an m. rufus (red kangaroo)-mouse somatic cell hybrid contai ...19853834888
proteins of marsupial erythrocyte membranes.the proteins of erythrocyte membranes from the red kangaroo, western grey kangaroo, eastern grey wallaroo (euro), red-necked wallaby, tammar wallaby, and brush-tail possum have been fractionated on acrylamide gels in the presence of sodium dodecyl sulfate. the pattern of proteins was remarkably similar between the different marsupial species. the pattern of coomassie blue-staining proteins in the membranes of these species was also very similar to that of the human erythrocyte membrane. however, ...19854051902
klossiella (apicomplexa, klossiellidae) in petaurid and macropodid marsupials in australia.six new species of klossiella are described in the kidneys of australian marsupials: klossiella rufogrisei in bennett's wallaby, macropus rufogriseus; klossiella rufi in the red kangaroo, macropus rufus; klossiella thylogale in the red-bellied or tasmanian pademelon, thylogale billardierii; klossiella beveridgei in the spectacled hare-wallaby, lagorchestes conspicillatus; klossiella bettongiae in the tasmanian bettong, bettongia gaimardi; and klossiella schoinobatis in the petaurid greater glide ...19853930707
cross-reaction of a monoclonal antibody with fibroblasts from marsupials of the macropodidae and tarsipedidae families.a monoclonal antibody, ga-1, was prepared against an m. rufogriseus cell surface antigen on an m. rufogriseus (red necked wallaby)--mouse somatic cell hybrid. fibroblasts from a number of marsupial species were tested for reaction with ga-1, and only those from the macropodidae species and the sole member of the family tarsipedidae reacted, indicating that the tarsipedidae is possibly more closely related to the macropodidae than to any other group of marsupials examined.19854062701
effects of tactile and electrical stimuli upon release of vasoactive intestinal polypeptide in the mammalian penis.plasma levels of vasoactive intestinal polypeptide (vip) in the corpora cavernosa penis and dorsal penile veins greatly exceeded those measured in the limb or caudal veins during anaesthesia in various mammals (bennett's wallaby, barbary sheep, cheetah, puma, sooty mangabey, pigtail macaque and chimpanzee). tactile stimulation of the penis immediately before or during collection of blood samples resulted in an increase. in the wallaby, vip levels (mean +/- s.e.m.) in blood samples collected from ...19846420493
susceptibility of wallabies to fusobacterium necrophorum.wallabies (macropus rufogriseus) were not appreciably more susceptible than rabbits or mice to fusobacterium necrophorum, a fact established by the subcutaneous injection of a series of graded doses into animals of each species. the strikingly frequent occurrence of necrobacillosis in captive macropods is therefore not due to a uniquely high susceptibility. a vaccine containing inactivated f necrophorum culture emulsified with freund's complete adjuvant failed to increase the resistance of walla ...19863739178
morphological features of the surface of the subcommissural organ and aqueduct in the red necked wallaby (wallabia rufogrisea).the subcommissural organ and aqueduct of the red necked wallaby were examined using scanning electron microscopy. the surface of the subcommissural organ was similar to that of the possum brain and was superficially similar to that of the rat. however, on close examination, the apical protrusions composing the eutherian subcommissural organ were not present and tight clusters of microvilli were noted instead. caudal to the subcommissural organ and on each side of the mesocoelic recess there were ...19836668245
aetiological agents of necrobacillosis in captive wallabies.in a series of 27 wallabies (macropus rufogriseus) with necrobacillosis, 14 animals were affected in the face, nine in the leg and six in the internal organs, two being affected in more than one site. fusobacterium necrophorum was the predominating organism, occurring in 69 per cent of lesions, usually in heavy and occasionally in pure culture. bacteroides species (six in all), often in considerable numbers, were found in 48 per cent of lesions, and f nucleatum in 14 per cent. aerobes or faculta ...19846463385
evolution of alpha-lactalbumins. the complete amino acid sequence of the alpha-lactalbumin from a marsupial (macropus rufogriseus) and corrections to regions of sequence in bovine and goat alpha-lactalbumins.alpha-lactalbumin was purified from a whey protein fraction of the milk of the red-necked wallaby (macropus rufogriseus). the complete amino acid sequence was determined from the results of automatic sequenator analyses of the intact protein, the three cyanogen bromide fragments, and of peptides generated from the larger, cooh-terminal cnbr fragment by digestion with trypsin or staphylococcal protease. this is the first sequence to be determined of an alpha-lactalbumin from a marsupial and diffe ...19846715332
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 ...19817241704
evolution of alanine:glyoxylate aminotransferase 1 peroxisomal and mitochondrial targeting. a survey of its subcellular distribution in the livers of various representatives of the classes mammalia, aves and amphibia.as part of a wider study on the molecular evolution of alanine:glyoxylate aminotransferase 1 (agt1) intracellular compartmentalization, we have determined the subcellular distribution of immunoreactive agt1, using postembedding protein a-gold immunoelectron microscopy, in the livers of various members of the classes mammalia, aves, and amphibia. as far as organellar distribution is concerned, three categories could be distinguished. in members of the first category (type i), all, or nearly all, ...19947813517
ultrastructure of the reactivated corpus luteum after embryonic diapause in the marsupial, macropus rufogriseus banksianus.during embryonic diapause in the red-necked wallaby, m.r. banksianus, both the corpus luteum and uterine blastocyst remain dormant, and are reactivated following removal of the suckling pouch young (rpy). the morphology of dormant and reactivated corpora lutea has been studied throughout the 26.5 days of delayed gestation. corpora lutea at 0, 2 1/2, 4, 9, 14, 21 and 25 days after rpy were fixed by perfusion. from day 4 to day 14 after rpy there was a progressive increase in the amount of smooth ...19836831526
metronidazole in the treatment of lumpy-jaw in a bennett's wallaby. 19807445379
evolution of mhc class i loci in marsupials: characterization of sequences from koala (phascolarctos cinereus)we demonstrate that koala (phascolarctos cinereus) mhc class i constitutes a variable multigene family. a total of nine partial exon 2 and 3 major histocompatibility complex (mhc) class i sequences are presented, including six sequences from at least three loci from one koala. variation was detected by examination of sequences from a number of individuals and family groups. the koala is the second marsupial species characterized to date, and comparisons reveal approximately 80% similarity with s ...19968865665
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 ...19938097985
microvascular free tissue transfer: results in 57 consecutive cases.to evaluate the outcomes and complications in a consecutive series of animals undergoing microvascular reconstructive procedures at two veterinary institutions.19989749509
nonshivering thermogenesis in marsupials: absence of thermogenic response to beta 3-adrenergic agonists.the status of nonshivering thermogenesis (nst) in marsupials remains controversial. although morphological studies have failed to find evidence for the presence of brown adipose tissue (bat) in adults or juveniles of species from all extant families of marsupial, a number of studies have investigated the metabolic response of marsupials to noradrenaline (na) and yielded conflicting results. in eutherian mammals, na stimulates nst in bat by acting on beta 3-receptors, and in the experiments repor ...19979172391
the unusual amino acid triplet asn-ile-cys is a glycosylation consensus site in human alpha-lactalbumin.human alpha-lactalbumin has not been described as a glycoprotein, despite the fact that several alpha-lactalbumins of both ruminant and nonruminant species are known to be glycosylated. in all these species the glycosylation site is the 45asn in the usual triplet 45asn-gly/gln-47ser. we have found that human alpha-lactalbumin is glycosylated and the glycosylation site has been determined by protein sequencing and mass spectrometry. we report an unusual glycosylation site at 71asn in the triplet ...19979365923
marsupial, insectivore, and chiropteran anesthesia.this article covers the manual restraint and anesthesia of marsupials, insectivores, and chiroptera. marsupials commonly kept as pets in the u.s. [e.g., eastern gray kangaroos (macropus giganteus), bennett's wallabies (macropus rufogriseus), and sugar gliders (petaurus breviceps)] are covered in detail. marsupial species kept in zoological parks [e.g., tasmanian devils, koalas (phascolarctos cinereus), and common wombats (vombatus ursinus)] are covered in less detail. of the insectivores, only t ...200111217462
cloning of the mhc class ii drb cdna from the brushtail possum (trichosurus vulpecula).the cell-surface glycoproteins encoded by the major histocompatibility complex (mhc) bind to processed foreign antigens and present them to t lymphocytes. two classes of mhc molecules and their corresponding gene sequences have been extensively studied in eutherian mammals and birds, but data on the marsupial mhc are limited. marsupials split from eutherian mammals about 125 million years ago and represent a distinct branch in mammalian evolution. here the cdna cloning of mhc class ii genes of t ...200111222910
genetic analysis of a documented population bottleneck: introduced bennett's wallabies (macropus rufogriseus rufogriseus) in new zealand.few bottlenecks of wild populations are sufficiently well-documented to constitute models for testing theories about the impact of bottlenecks on genetic variation, and subsequent population persistence. relevant details of the bennett's wallaby (macropus rufogriseus rufogriseus) introduction into new zealand were recorded (founder number, source and approximate bottleneck duration) and suggest this may provide a rare opportunity to examine the efficacy of tests designed to detect recent bottlen ...200010849291
common procedures in hedgehogs, prairie dogs, exotic rodents, and companion marsupials.nondomesticated species are commonly being kept as companion animals. these include the african pygmy hedgehog (atelerix albi-ventris), the north american black-tailed prairie dog (cynomys lu-dovicianus), and exotic rodents such as the degu (octodon degus)and duprasi or fat-tailed gerbil (pachyuromys duprasi). common companion marsupials include the sugar glider (petaurus breviceps),bennett's or tammar (dama) wallabies (macropus rufogriseus rufo-griseus and macropus eugenii, respectively), the b ...200616759954
echinococcus granulosus in northern queensland. 1. prevalence in cattle.to determine the prevalence and geographical distribution of hydatidosis and investigate factors that might be expected to influence the prevalence of hydatids in cattle in queensland north of the tropic of capricorn. to determine the effect of natural levels of infection on carcase weight and subsequent economic loss.200616958624
toxoplasmosis in captive bennett's wallabies (macropus rufogriseus) in argentina.wallabies and other australian marsupials are among the most susceptible species to toxoplasma gondii. fatal generalized toxoplasmosis was diagnosed in two captive 3 year-old female bennett's wallabies (macropus rufogriseus) from argentina (w 1 and w 2) with a history of sudden death. both animals had internal joeys which died 2 days after their mothers. serologically, both females and one adult male without clinical signs from the same enclosure (w 3) had antibody titers for t. gondii>or=800 by ...200717056183
seroepidemiology of toxoplasma gondii in zoo animals in selected zoos in the midwestern united states.toxoplasma gondii infections in zoo animals are of interest because many captive animals die of clinical toxoplasmosis and because of the potential risk of exposure of children and elderly to t. gondii oocysts excreted by cats in the zoos. seroprevalence of t. gondii antibodies in wild zoo felids, highly susceptible zoo species, and feral cats from 8 zoos of the midwestern united states was determined by using the modified agglutination test (mat). a titer of 1:25 was considered indicative of t. ...200818605803
toxoplasma gondii inclusions in peripheral blood leukocytes of a red-necked wallaby (macropus rufogriseus).a 2-year-old, male, red-necked (bennett's) wallaby (macropus rufogriseus) from a zoological facility was presented for peracute onset of severe depression, unresponsiveness, ataxia, and loose feces. serum biochemical abnormalities included azotemia, hypoalbuminemia, increased alanine aminotransferase activity, hyperbilirubinemia, hyperphosphatemia, and hyperkalemia, consistent with multi-organ system failure. severe thrombocytopenia suggested possible disseminated intravascular coagulation. peri ...200717311203
toxoplasmosis in wallabies (macropus rufogriseus and macropus eugenii): blindness, treatment with atovaquone, and isolation of toxoplasma gondii.australasian marsupials, especially wallabies, are highly susceptible to clinical toxoplasmosis. this paper describes the use of atovaquone for effective treatment of toxoplasmosis in 4 bennett's wallabies (macropus rufogriseus), along with the serology, isolation of toxoplasma gondii, and genotyping of 3 t. gondii isolates from 5 captive wallabies. this is the first report of success in treating acute toxoplasmosis in wallabies, the first report of serology followed over a significant period of ...200818576797
alveolar echinococcosis in a captive red-necked wallaby (macropus rufogriseus).a 2.5-year old male red-necked wallaby (macropodus rufogriseus) kept privately in an outdoor enclosure in germany died with severe jaundice and abdominal enlargement. post mortem examination revealed ascites, and multiple nodular lesions in liver, diaphragm, omentum, mesentery, spleen, lung, hepatic and thoracic lymph nodes. histologically, the nodules consisted of predominantly fertile larval tissue of a taeniid cestode, necrosis and granulomatous inflammation. echinococcus multilocularis infec ...201020135912
toxoplasmosis in bennett's wallabies (macropus rufogriseus) in spain.toxoplasmosis is one of the more common parasitic zoonoses world-wide. in this study, an epizootic of toxoplasmosis among captive bennett's wallabies (macropus rufogriseus) from different locations is reported. by means of light microscopy, toxoplasma gondii-like tachyzoites were observed associated to interstitial pneumonia, non-suppurative myocarditis, cholangiohepatitis and severe gastroenteritis. the protozoa stained positively with a t. gondii antibody and ultrastructurally were similar to ...200919046816
use of a sustained release chlorhexidine varnish as treatment of oral necrobacillosis in macropus spp.oral necrobacillosis or lumpy jaw is a common cause of morbidity and mortality affecting captive macropods. this article describes several cases of a new treatment regimen using a sustained release chlorhexidine varnish applied locally to the teeth and the gingivae of two macropus species, eastern grey kangaroos (macropus gigantus) from gan-garoo australian park and a red-necked wallaby (macropus rufogriseus fruticus) from the tisch family zoological gardens in jerusalem. the varnish was applied ...201020597238
presumptive acute neural toxoplasmosis in a captive red-necked wallaby (macropus rufogriseus).a red-necked male wallaby (macropus rufogriseus) from a german zoo was presented for acute onset of severe neurological signs, including head tremor, lethargy, unresponsiveness, and weakness. serum biochemical abnormalities included increased ldh- and ast-levels, hyperproteinaemia, and reduced alt-, alp-, and creatinine-levels. the wallaby was found serologically positive for toxoplasma gondii by the indirect haemagglutination test. after initiation of therapy by subcutaneous injections of trime ...201020613947
characterization of 2-[125i]iodomelatonin binding sites in the brain of a marsupial, bennett's wallaby (macropus rufogriseus rufogriseus).1. specific high affinity binding of 2-[125i]iodomelatonin was detected in the brain of the pouch young of a marsupial, bennett's wallaby. 2. binding was rapid, stable, saturable and reversible. 3. scatchard analysis indicated a single class of high affinity binding sites with an equilibrium dissociation constant (kd) of 68 +/- 13 pm, a maximal number of binding sites (bmax) of 0.7 +/- 0.1 fmol/mg protein and a hill coefficient (nh) of 1.12 +/- 0.10. 4. specific binding was inhibited by gtp (1 m ...20051351824
recent amplification of the kangaroo endogenous retrovirus, kerv, limited to the centromere.mammalian retrotransposons, transposable elements that are processed through an rna intermediate, are categorized as short interspersed elements (sines), long interspersed elements (lines), and long terminal repeat (ltr) retroelements, which include endogenous retroviruses. the ability of transposable elements to autonomously amplify led to their initial characterization as selfish or junk dna; however, it is now known that they may acquire specific cellular functions in a genome and are implica ...201121389136
parasite and predator risk assessment: nuanced use of olfactory cues.foraging herbivores face twin threats of predation and parasite infection, but the risk of predation has received much more attention. we evaluated, experimentally, the role of olfactory cues in predator and parasite risk assessment on the foraging behaviour of a population of marked, free-ranging, red-necked wallabies (macropus rufogriseus). the wallabies adjusted their behaviour according to these olfactory cues. they foraged less, were more vigilant and spent less time at feeders placed in th ...026468246
in this issue - october 2016: horse transportation in australia · osteopetrosis in a neonatal donkey · bovine ephemeral fever virus-infected downer cattle · antimicrobial resistance in escherichia coli in finisher pigs · stabilisation of periarticular fractures using a notched head locking t-plate · measuring blood coagulation in bennett's wallabies · vaccine against salmonella typhimurium in laying hens. 201627671076
leishmania infantum infection in bennett's wallabies (macropus rufogriseus rufogriseus) in a spanish wildlife park.although dogs are the main reservoir for human leishmania infantum infection, the disease has also been reported in other domestic and wild mammals. in 2011, a fatal case of naturally acquired leishmaniosis was described for the first time in a bennett's wallaby (macropus rufogriseus rufogriseus) kept in a wildlife park in madrid (spain). this study was designed to assess the infection status of twelve bennett's wallabies in the same park one year after this incident. phlebotomus perniciosus, th ...201627468032
pasteurella multocida carriage in red-necked wallabies (macropus rufogriseus).the isolation of pasteurella multocida from several red-necked wallabies (macropus rufogriseus) with purulent to necrotizing gingivitis, mandibular osteomyelitis, and conjunctivitis in a private zoological park prompted a cross-sectional prevalence study in two zoological collections. the study demonstrated a high prevalence of p. multocida carriage in clinically healthy red-necked wallabies. in one collection (n= 7), p. multocida was isolated from the gingival mucosa of two animals (28.6%) and ...201223272337
comparative studies of water permeability of red blood cells from humans and over 30 animal species: an overview of 20 years of collaboration with philip kuchel.nmr measurements of the diffusional permeability of the human adult red blood cell (rbc) membrane to water (p(d)) and of the activation energy (e(a,d)) of the process furnished values of p(d) ~ 4 × 10(-3) cm/s at 25 °c and ~6.1 × 10(-3) cm/s at 37 °c, and e(a,d) ~ 26 kj/mol. comparative nmr measurements for other species showed: (1) monotremes (echidna and platypus), chicken, little penguin, and saltwater crocodile have the lowest p(d) values; (2) sheep, cow, and elephant have p(d) values lower ...201323104624
x-linked gene expression in metatherian fibroblasts: evidence from the gpd and pgk-a loci of the virginia opossum and the red-necked wallaby.fibroblasts cultured from ear pinna biopsies of virginia opossums (didelphis virginiana) and red-necked wallabies (macropus rufogriseus) were examined electrophoretically to determine the relative expression levels of the maternally and paternally derived alleles at x-linked, enzyme-coding loci. only the maternally derived allele was expressed at the pgk-a locus in fibroblasts of heterozygous d. virginiana (m. rufogriseus not examined), but fibroblasts of both species exhibited evidence of pater ...19892803226
pulmonary arterial disease associated with right-sided cardiac hypertrophy and congestive heart failure in zoo mammals housed at 2,100 m above sea level.subacute and chronic mountain sickness of humans and the related brisket disease of cattle are characterized by right-sided congestive heart failure in individuals living at high altitudes as a result of sustained hypoxic pulmonary hypertension. adaptations to high altitude and disease resistance vary among species, breeds, and individuals. the authors conducted a retrospective survey of right-sided cardiac hypertrophy associated with pulmonary arterial hypertrophy or arteriosclerosis in zoo mam ...201526667539
ontogenetic and phylogenetic transformations of the ear ossicles in marsupial mammals.this study is based on the examination of histological sections of specimens of different ages and of adult ossicles from macerated skulls representing a wide range of taxa and aims at addressing several issues concerning the evolution of the ear ossicles in marsupials. three-dimensional reconstructions of the ear ossicles based on histological series were done for one or more stages of monodelphis domestica, caluromys philander, sminthopsis virginiae, trichosurus vulpecula, and macropus rufogri ...200211835361
first description of onychomycosis caused by chrysosporium keratinophilum in captive bennett's wallabies (macropus rufogriseus rufogriseus).seven bennett's wallabies (macropus rufogriseus rufogriseus) presented within a period of several months with onychodystrophy, onychomadesis, and severe digital tumefaction. histopathologic findings included a pseudocarcinomatous hyperplasia of the claw matrix surrounding a cavity filled with keratin and septate hyphae stained with periodic acid schiff reagent. the fungal species chrysosporium keratinophilum was identified on cultures. the wallabies were orally treated with ketoconazole (15 mg/k ...201122946390
sarcocystis mucosa (blanchard 1885) labbé 1889 in unadorned rock wallabies (petrogale assimilis) and bennett's wallabies (macropus rufogriseus).macroscopic cysts of a protozoan parasite were detected in the gastro-intestinal walls of two unadorned rock wallabies (petrogale assimilis) and 20 bennett's wallabies (macropus rufogriseus). the cysts were located predominantly in the muscularis externa and the submucosa of the forestomach, small intestine and colon and sometimes in the muscularis externa of the oesophagus and caecum. all cysts exhibited similar morphological and ultrastructural characteristics. they were bounded by thick prima ...19873106956
sarcocystis mucosa in bennetts wallabies and pademelons from tasmania.macroscopic gastrointestinal sarcocysts were detected in 36 of 270 (13%) tasmanian pademelons (thylogale billardierii) and 47 of 292 (16%) bennetts wallabies (macropus rufogriseus) from january 1995 to march 1996 at onshore and offshore study sites in tasmania (australia). the sarcocysts were characterized using light and electron microscopy. the ultrastructure of the primary cyst wall was consistent with that of sarcocystis mucosa, an apicomplexan parasite commonly found in macropodid marsupial ...19989706570
fatal toxoplasmosis associated with an atypical toxoplasma gondii strain in a bennett's wallaby (macropus rufogriseus) in spain.toxoplasmosis is often fatal in captive wallabies, but the causes of this high susceptibility are not well understood. here, we report fatal toxoplasmosis in a bennet's wallaby (macropus rufogriseus) due to an atypical toxoplasma gondii strain for the first time in europe. the wallaby was from a colony of 7 bennet's wallabies that died over a 17-month period at a safari-zoological park in northeastern spain. only one of these wallabies was examined at necropsy. t. gondii-like organisms were dete ...201323523164
mhc class ii genes of a marsupial, the red-necked wallaby (macropus rufogriseus): identification of new gene families.in placental mammals, the class ii region of the major histocompatibility complex (mhc) consists of several gene families which show orthologous relationships in the different species. as these families are not orthologous with the mhc class ii beta-chain-encoding gene families of birds, the different mammalian families must have diverged after the separation of birds and mammals approximately 250 mya but before the radiation of placental mammals (60-80 mya). to obtain further information about ...19911775063
comparative nmr studies of diffusional water permeability of red blood cells from different species: xv. agile wallaby (macropus agilis), red-necked wallaby (macropus rufogriseus) and goodfellow's tree kangaroo (dendrolagus goodfellowi).the water diffusional permeability (p(d)) of red blood cells (rbc) from agile wallaby (macropus agilis), red-necked wallaby (macropus rufogriseus) and goodfellow's tree kangaroo (dendrolagus goodfellowi) was monitored using an mn(2+)-doping (1)h nuclear magnetic resonance (nmr) technique at 400 mhz. the p(d) (cm s(-1)) values of agile wallaby rbcs were 7.5 x 10(-3) at 25 degrees c, 9 x 10(-3) at 30 degrees c, 11 x 10(-3) at 37 degrees c, and 13 x 10(-3) at 42 degrees c. the inhibitory effect of ...200919463965
dietary partitioning of australia's two marsupial hypercarnivores, the tasmanian devil and the spotted-tailed quoll, across their shared distributional range.australia's native marsupial fauna has just two primarily flesh-eating 'hypercarnivores', the tasmanian devil (sarcophilus harrisii) and the spotted-tailed quoll (dasyurus maculatus) which coexist only on the island of tasmania. devil populations are currently declining due to a fatal transmissible cancer. our aim was to analyse the diet of both species across their range in tasmania, as a basis for understanding how devil decline might affect the abundance and distribution of quolls through rel ...201729176811
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 ...200818816994
reproductive disorders of marsupials.marsupial reproduction differs significantly in anatomy and physiology from that of placental mammals. the gastrointestinal and urogenital tracts empty into a cloaca. reproductive parameters include gestation and pouch time, as the fetus develops outside of the uterus. captive marsupials discussed include sugar gliders), short-tailed opossums, virginia opossums, and tammar and bennett's wallabies. common disease conditions include joey eviction, pouch infections, mastitis, metritis, prostatitis, ...201728169182
immunome database for marsupials and monotremes.to understand the evolutionary origins of our own immune system, we need to characterise the immune system of our distant relatives, the marsupials and monotremes. the recent sequencing of the genomes of two marsupials (opossum and tammar wallaby) and a monotreme (platypus) provides an opportunity to characterise the immune gene repertoires of these model organisms. this was required as many genes involved in immunity evolve rapidly and fail to be detected by automated gene annotation pipelines.201121854560
composition of marsupial zona pellucida: a molecular and phylogenetic approach.the zona pellucida (zp) is an extracellular matrix that surrounds mammalian oocytes. in eutherians it is formed from three or four proteins (zp1, zp2, zp3, zp4). in the few marsupials that have been studied, however, only three of these have been characterised (zp2, zp3, zp4). nevertheless, the composition in marsupials may be more complex, since a duplication of the zp3 gene was recently described in one species. the aim of this work was to elucidate the zp composition in marsupials and relate ...201729162213
genomic instability within centromeres of interspecific marsupial hybrids.several lines of evidence suggest that, within a lineage, particular genomic regions are subject to instability that can lead to specific types of chromosome rearrangements important in species incompatibility. within family macropodidae (kangaroos, wallabies, bettongs, and potoroos), which exhibit recent and extensive karyotypic evolution, rearrangements involve chiefly the centromere. we propose that centromeres are the primary target for destabilization in cases of genomic instability, such a ...200718073443
host-parasite associations of eimeria spp. (apicomplexa:eimeriidae) in kangaroos and wallabies of the genus macropus (marsupialia:macropodidae).faecal samples from 514 kangaroos and wallabies representing 12 species of the genus macropus were examined for oocysts of eimeria spp. six species of eimeria were redescribed from their type hosts, and on the basis of finding homologous oocysts in the faeces of other macropus spp., host ranges for these coccidia were extended. eimeria hestermani mykytowycz, 1964 is redescribed from m. giganteus (eastern grey kangaroo) and is described from m. fuliginosus (western grey kangaroo), m. rufogriseus ...19892759765
repeated dna sequences and kangaroo phylogeny.three highly repeated dna sequences have been used to determine relationships of species within the macropodidae (kangaroos and wallabies). two highly repeated dna sequences were isolated as buoyant density satellites in the red-necked wallaby and in the wallaroo-euro group. the third probe was a cloned representative of one class of highly repeated species from the red kangaroo. radioactively labelled probes of these three repeated sequences were used to determine the incidence and distribution ...19817295212
isolation of major histocompatibility complex class i genes from the tammar wallaby (macropus eugenii).the major histocompatibility complex (mhc) plays an essential role in the adaptive immune system of vertebrates through antigen recognition. although mhc genes are found in all vertebrates, the mhc region is dynamic and has changed throughout vertebrate evolution, making it an important tool for comparative genomics. marsupials occupy an important position in mammalian phylogeny, yet the mhc of few marsupials has been studied in detail. we report the isolation and analysis of expressed mhc class ...200616568263
mesotocin and luteal function in macropodid marsupials.pituitary glands and corpora lutea collected at various stages of the reproductive cycle of the tammar wallaby (macropus eugenii), were extracted and fractionated by high-performance liquid chromatography, and specific radioimmunoassays were used to measure mesotocin ([ile8]-oxytocin) and oxytocin. mesotocin, but not oxytocin, was identified in extracts of pituitary; the mean concentration of mesotocin in this tissue was 0.75 nmol/g wet weight. neither mesotocin nor oxytocin was detected in extr ...19883392493
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 ...201626621691
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 ...201526188404
cryopreservation of macropodid spermatozoa: new insights from the cryomicroscope.this study examined the effects of cooling and cryopreservation upon macropod spermatozoa (eastern grey kangaroo, macropus giganteus and red-necked wallaby, macropus rufogriseus). sperm survival during and after freezing to -30 degrees c or 70 degrees c in minimum essential medium (mem) + 5, 10, 20 or 30% (v/v) glycerol, mem + 10 or 20% (v/v) ethylene glycol and mem containing a mixture of 7.5% (v/v) glycerol + 10% (v/v) dimethylsulphoxide was examined by cryomicroscopy. the mem/glycerol mixture ...199910972303
satellite dna sequences in the red kangaroo (macropus rufus).there is a complex pattern of satellite dna sequences in m. rufus which are revealed by addition of ag+ or dye (hoechst 33258) to the dna ink cs2so4 or cscl equilibrium density gradients. six satellite dna fractions have been isolated; these have buoyant densities in neutral cscl of 1.692, 1.704, 1.705, 1.707 (two), 1.710 and 1.712 g/ml compared with 1.696 g/ml for the main band dna. each satellite accounts for 1-3% of the dna of the genome. the satellites are located in the centromeric heteroch ...19826293435
early expression of manual lateralization in bipedal marsupials.robust lateralization in forelimb use has recently been found in bipedal, but not quadrupedal, marsupial mammals. the link between bipedality and handedness, occurring in both marsupials and primates, remains to be investigated. to shed light on the developmental origins of marsupial manual lateralization, infants of macropod marsupials were examined before and shortly after the acquisition of habitual bipedal posture and locomotion. forelimb preferences were assessed in natural, not artificiall ...201728287756
therapeutics of companion exotic marsupials.exotic marsupials are becoming popular companion pets, yet little pharmacologic information is available to the practitioner. species include sugar gliders (petarus breviceps), south american (brazilian) short-tailed opossums (monodelphis domestica), brushtail possum or "phalanger" (trichosurus vulpecula), and wallabies: bennett's (macropus rufogriseus rufogriseus) and tammar or dama (macropus eugenii). guidelines for logical choices of medications based on allometric scaling, gastrointestinal t ...200011228826
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 ...201626873827
newly described toxoplasma gondii strain causes high mortality in red necked wallabies (macropus rufogriseus) in a zoo.this manuscript describes an outbreak of fatal toxoplasmosis in wallabies. ten adult red necked wallabies (macropus rufogriseus) were imported from new zealand to the virginia zoo. agglutination testing upon admission into quarantine showed all animals to be negative for antibodies to toxoplasma gondii. nine of these wallabies died from acute toxoplasmosis within 59-565 (average 224) days after being moved onto exhibit. clinical signs included lethargy, diarrhea, tachypnea, and ataxia that progr ...201728920810
comparison of medetomidine-ketamine and butorphanol-azaperone-medetomidine in captive bennett's wallabies (macropus rufogriseus).the objective of this study was to compare a traditional partially reversible medetomidine-ketamine sedation with a more reversible butorphanol-azaperone-medetomidine combination in bennett's wallabies ( macropus rufogriseus ) maintained in a zoological collection. fourteen animals were divided into two treatment groups. individuals in group 1 received an intramuscular (i.m.) injection of butorphanol (0.54 ± 0.05 mg/kg), azaperone (0.22 ± 0.02 mg/kg), and medetomidine (0.16 ± 0.02 mg/kg). indivi ...201628080912
ultrasound-guided femoral and sciatic nerve blocks for repair of tibia and fibula fractures in a bennett's wallaby (macropus rufogriseus).locoregional anesthetic techniques may be a very useful tool for the anesthetic management of wallabies with injuries of the pelvic limbs and may help to prevent capture myopathies resulting from stress and systemic opioids' administration. this report describes the use of ultrasound-guided femoral and sciatic nerve blocks in bennett's wallaby (macropus rufogriseus) referred for orthopaedic surgery. ultrasound-guided femoral and sciatic nerve blocks were attempted at the femoral triangle and pro ...201627803817
prothrombin time and activated partial thromboplastin time using a point-of-care analyser (abaxis vspro®) in bennett's wallabies (macropus rufogriseus).there are few reports of coagulation times in marsupial species. blood samples collected from 14 bennett's wallabies (macropus rufogriseus) under anaesthesia during routine health assessments were analysed for prothrombin time (pt) and activated partial thromboplastin time (aptt) using a point-of-care analyser (poc) (abaxis vspro®). the wallabies had an aptt mean of 78.09 s and median of 78.1 s. the pt for all wallabies was greater than 35 s, exceeding the longest time measured on the poc. altho ...201627671083
motor and postural asymmetries in marsupials: forelimb preferences in the red-necked wallaby (macropus rufogriseus).in the last decades, several studies on mammal motor lateralization have been carried out. however, data on marsupials are still underrepresented in the literature, despite their importance in tracing the evolution of motor laterality and its functional value. this study aimed at investigating motor lateralization in a sample of captive red-necked wallabies (macropus rufogriseus), considering different daily unimanual activities and forelimb implication in postural support. data on forelimb pref ...201627150458
surgical correction of a cervical spinal fracture in a bennett's wallaby (macropus rufogriseus).macropods are susceptible to trauma, and fractures of the cervical vertebrae due to collisions are relatively common. a 4-yr-old, intact male bennett's wallaby (macropus rufogriseus) was presented acutely nonambulatory and tetraparetic but with motor function present in all limbs. cervical radiographs revealed a c4 vertebral fracture. surgical stabilization was obtained through a ventral midline approach whereby the vertebral bodies were distracted and then secured with screws and polymethylmeth ...201627010308
use of oral fluoxetine for the treatment of abnormal aggression in two red-necked wallabies (macropus rufogriseus).: abnormal inter- and intraspecies aggression, perceived to be anxiety related, was identified in two male red-necked wallabies (macropus rufogriseus) housed within a zoo. aggressive episodes were directed at conspecifics, other exhibit animals, and, in one case, human caretakers. the clinical use of oral fluoxetine (0.5 mg/kg po bid) for a period of approximately 4 mo was effective in eliminating aggression towards humans and other animals in these two individuals. there was no evidence of recr ...201728920807
pharmacokinetics of intravenous clindamycin phosphate in captive bennett's wallabies (macropus rufogriseus).this study was designed to investigate the pharmacokinetics of clindamycin, a lincosamide antibiotic, in bennett's wallabies. the pharmacokinetic properties of a single intravenous (iv) dose of clindamycin were determined in six wallabies. a single 20-min iv infusion of 20 mg/kg of clindamycin was administered, followed by blood collection prior to, and up to 12 hr after clindamycin administration. plasma clindamycin concentrations were determined by high-pressure liquid chromatography (hplc) wi ...201728568310
treatment of mandibular osteomyelitis in two red-necked wallabies (macropus rufogriseus) by means of intensive long-term parenteral drug administration and serial computed tomographic monitoring.case description 2 female red-necked wallabies (macropus rufogriseus) were evaluated because of sudden-onset mandibular swelling, ptyalism, and hyporexia. clinical findings physical examination revealed a mandibular swelling with a fluctuant center in both wallabies. hematologic analysis revealed leukocytosis with a mature neutrophilia and monocytosis in one wallaby (case 1) and a slight neutrophilia, hyperglobulinemia, and high serum alanine aminotransferase activity in the other (case 2). cyto ...201729035648
phylogenetic relationships of species of the oesophageal parasitic nematode genera cyclostrongylus and spirostrongylus (strongyloidea: chabertiidae: cloacininae) with their wallaby hosts (marsupialia: macropodidae).a phylogeny for seven species of cyclostrongylus and the monotypic genus spirostrongylus (nematoda: chabertiidae), all highly host specific parasites of the oesophagi of wallabies (marsupialia: macropodidae), was constructed using sequence data for the first and second internal transcribed spacers (its-1 and its-2) of the nuclear ribosomal dna. there was no evidence for co-speciation, or for the sympatric or synxenic speciation of cyclostrongylus alatus and cyclostrongylus perplexus, both of whi ...201626802594
evaluation of medetomidine-alfaxalone and medetomidine-ketamine in semi-free ranging bennett's wallabies (macropus rufogriseus).twenty-six adult semi-free-ranging bennett's wallabies were anesthetized. animals in group ma received medetomidine 0.1 mg/kg and alfaxalone 4 mg/kg i.m. in a 5-ml dart, whereas those in group mk received medetomidine 0.1 mg/kg and ketamine 5 mg/kg i.m. in a 3-ml dart. dosages were based on estimated body weights. the wallabies were allowed to recover spontaneously or, if still nonresponsive at the end of the procedure, were given atipamezole 0.5 mg/kg (half the dose via i.m. and the other half ...201122204056
sperm motility activation, sperm heterogeneity and sperm-female tract interactions in bennett's wallaby (macropus rufogriseus rufogriseus).sperm-oviduct interactions in bennett's wallaby (macropus rufogriseus rufogriseus) were investigated using in vitro cocultures of cauda epididymal spermatozoa and oviducal epithelial cells. kidney epithelial cells were used as non-reproductive control tissues. spermatozoa attached to epithelial cells of both origins, but sperm survival and activity was higher when cocultured with oviducal cells. new findings during live sperm-epithelial interactions included: (1) a high frequency of reversible h ...201121557927
eimeria prionotemni-associated coccidiosis in a bennett's wallaby (macropus rufogriseus). 201021257445
comparison of three anaesthetic protocols in bennett's wallabies (macropus rufogriseus).investigate physiological and sedative/anaesthetic effects of xylazine, medetomidine or dexmedetomidine combined with ketamine in free-ranging bennett's wallabies.201020230552
hypertrophic cardiomyopathy in two captive bennett's wallabies (macropus rufogriseus rufogriseus).hypertrophic cardiomyopathy (hcm) was diagnosed during postmortem examination of 2 captive adult bennett's wallabies (macropus rufogriseus rufogriseus). the wallabies were members of a mob (herd) of 3 wallabies, and 2 died spontaneously without clinical signs of heart failure being detected. gross lesions in both cases included marked concentric hypertrophy of the left ventricle, pulmonary edema, and multifocal hemorrhage and subcutaneous edema of the hind limbs. histologic lesions of the heart ...200919901297
hindgut plasticity in wallabies fed hay either unchopped or ground and pelleted: fiber is not the only factor.phenotypic plasticity of the gastrointestinal tract is crucial for optimal food processing and nutrient balance in many vertebrate species. for mammalian herbivores, gut plasticity is typically correlated with the fiber content of forage; however, we show here that other factors such as ingesta particle size may effect profound phenotypic plasticity of the fermentative hindgut in a medium-sized (10-kg body mass) marsupial herbivore, the red-necked wallaby (macropus rufogriseus). when dietary fib ...201719331583
concurrent coccidiosis and listeriosis in a bennett's wallaby (macropus rufogriseus). 200819029113
bronchitis associated with tracheomyia macropi in a red-necked wallaby (macropus rufogriseus). 200818616480
familial ichthyosiform keratoderma in newly out-of-pouch bennett's wallabies (macropus rufogriseus) and report of two cases.primary inherited disorders of cornification in veterinary medicine are uncommon and rarely reported. herein described is a unique syndrome associated with keratoderma that occurred in two bennett's wallaby siblings (macropus rufogriseus), and was characterized by profound thickening of the pad skin of all feet, generalized scaling of haired skin, and death within 7 weeks of out-of-pouch experience. the male also had depressed serum zinc levels. in addition, the male had, on electron microscopic ...200717222236
on the clinical chemistry of the bennett's wallaby (macropus rufogriseus rufogriseus).the following parameters were determined in blood serum of apparently healthy bennett's wallabies (macropus rufogriseus) using the hitachi 917 (roche diagnostics, mannheim, germany) and/or the vettest 8008 (idexx-gmbh, woerrstadt, germany): alkaline phosphatase, alanine aminotransferase, ammonia, alpha-amylase, aspartate aminotransferase, ca, cl, cholesterol, cholinesterase, creatine kinase, creatinine, gammaglutamyltransferase, glucose, iron, lactate dehydrogenase, magnesium, phosphate, potassi ...200616856606
ultrastructure, osmotic tolerance, glycerol toxicity and cryopreservation of caput and cauda epididymidal kangaroo spermatozoa.the aim of the present study was to compare cryopreservation, osmotic tolerance and glycerol toxicity between mature and immature epididymal kangaroo spermatozoa to investigate whether the lack of cryopreservation success of cauda epididymidal spermatozoa may be related to the increased complexity of the sperm ultrastructure acquired during epididymal transit. caput and cauda epididymidal spermatozoa were recovered from red-necked wallabies (rnw; macropus rufogriseus) and eastern grey kangaroos ...200616737640
cytogenetic and molecular evaluation of centromere-associated dna sequences from a marsupial (macropodidae: macropus rufogriseus) x chromosome.the constitution of the centromeric portions of the sex chromosomes of the red-necked wallaby, macropus rufogriseus (family macropodidae, subfamily macropodinae), was investigated to develop an overview of the sequence composition of centromeres in a marsupial genome that harbors large amounts of centric and pericentric heterochromatin. the large, c-band-positive centromeric region of the x chromosome was microdissected and the isolated dna was microcloned. further sequence and cytogenetic analy ...200616387881
personal experiences in the use of zoletil for anaesthesia of the red-necked wallaby (macropus rufogriseus). 200516244979
marsupial mhc class ii beta genes are not orthologous to the eutherian beta gene families.the major histocompatibility complex (mhc) class ii drb, dqb, dpb, and dob gene clusters are shared by different eutherian orders. such an orthologous relationship is not seen between the beta genes of birds and eutherians. a high degree of uncertainty surrounds the evolutionary relationship of marsupial class ii beta sequences with eutherian beta gene families. in particular, it has been suggested that marsupials utilize the drb gene cluster. a cdna encoding an mhc class ii beta molecule was is ...200615247314
use of antibiotic impregnated polymethylmethacrylate beads for the treatment of chronic mandibular osteomyelitis in a bennett's wallaby (macropus rufogriseus rufogriseus).antibiotic impregnated polymethylmethacrylate beads were surgically implanted into the mandible of an adult bennett's wallaby (macropus rufogriseus rufogriseus) suffering from chronic mandibular osteomyelitis that had proven refractory to systemic antibiotic treatment. although a discrete inflammatory mass remained, clinical signs of inappetance and a discharging sinus were alleviated following implantation of the beads. this procedure resulted in a more satisfactory outcome than other methods o ...200315080484
cuterebra myiasis in a group of red kangaroos (megaleia rufa), a bennett's wallaby (macropus rufogriseus fruticus), and a gunther's dik dik (maloqua guentheri smithi).a group of four red kangaroos (megaleia rufa), a bennett's wallaby (macropus rufogriseus fruticus), and a gunther's dik dik (maloqua guentheri smithi) were presented over a 2-mo period with draining lesions over the thorax or on the lateral aspect of a hind leg. only one animal exhibited more than one lesion. physical examinations revealed infections with fly larvae. the parasites were manually removed and identified as cuterebra spp. all of the affected animals survived, with no apparent side e ...200010884138
visual abnormalities in albino wallabies: a brief note.abnormally reduced uncrossed retinofugal pathways and abnormally low retinal cell densities have been described in albinos of a number of species of eutherian mammal, but have not been studied in marsupials. the optic chiasm of marsupials differs from that of the eutherian brains that have been studied, with uncrossed fibres segregating from crossed fibres prechiasmatically in the marsupials, but not in the eutherians. we have examined the optic chiasm and the retina in albino and normally pigme ...199910075441
circulating levels of prolactin and progesterone in a wild population of red kangaroos (macropus rufus) marsupialia: macropodidae.circulating progesterone and prolactin levels were measured in shot and live-caught wild red kangaroos using radioimmunoassays validated for the red kangaroo. the objective of the study was to correlate hormone profiles with reproductive status and determine if red kangaroos follow the general pattern elucidated for other macropodids. during phase 2a lactation ( < 70 days) plasma progesterone concentrations were < 189 pg/ml (n = 41). this value increased to > 600 pg/ml (n = 32) during the transi ...19968729941
suspected nutritional myopathy in two captive bennett's wallabies (macropus rufogriseus).between january and april, 1992, two captive bennett's wallabies (macropus rufogriseus) from a wildlife park in iwamizawa city, hokkaido, japan, were diagnosed as having nutritional myopathy. one wallaby, four-year-old adult male, had mild fresh lesions, confined to the skeletal muscles, with poor cell reaction. the other wallaby, 8-month-old female joey, had marked and extensive lesions with cellular reactions and regenerative muscle fibers in the locomotor muscles. involvement of other striate ...19957474645
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