Publications
| Title | Abstract | Year Filter | PMID(sorted descending) Filter |
|---|
| birth in marsupials. | birth is an event that allows the relatively immature marsupial to move from the internal environment of the uterus to the external environment of the pouch. the newborn marsupial passes down from the uterus to the urogenital sinus and then makes its way to the pouch and attaches to the teat at a very early stage of development. from the studies available, there appear to be three methods used by the newborn to move from the uterus to the pouch. in marsupials with a forward pouch such as the red ... | 2002 | 11923078 |
| redescription of zoniolaimus mawsonae beveridge, 1983 (nematoda: strongyloidea) and the description of z. latebrosus n. sp. from the red kangaroo macropus rufus (marsupialia: macropodidae) based on morphological and molecular data. | this study shows that the description of z. mawsonae given by beveridge (1983) represented a composite of two species. hence, z. mawsonae beveridge, 1983 is re-described and a new species, z. latebrosus, is described. males of the two species differ in the lengths of their spicules (0.94-1.23 mm in z. mawsonae compared with 1.53-1.95 mm in z. latebrosus) and in several characteristics of the bursa and genital cone. females of the two species can be identified based on the shape of the posterior ... | 2002 | 11912339 |
| salivary secretion during selective beta-adrenoreceptor stimulation and blockade in the parotid gland of red kangaroos, macropus rufus. | intracarotid infusions of noradrenaline (0.3 nmol.kg(-1) x min(-1)) stimulated salivary fluid secretion and caused increases in salivary concentrations of protein, potassium. magnesium. chloride and phosphate, and decreases in bicarbonate. these effects of intracarotid noradrenaline were not reduced by simultaneous intracarotid infusion of phentolamine (3.0 nmol.kg(-1) x min(-1)) but were significantly greater than the responses accompanying intravenous noradrenaline infusion. concomitant admini ... | 2002 | 11824402 |
| thermoregulation in juvenile red kangaroos (macropus rufus) after pouch exit: higher metabolism and evaporative water requirements. | the population dynamics of red kangaroos (macropus rufus) in the australian arid zone is tightly linked with environmental factors, which partly operate via the survival of juvenile animals. a crucial stage is the young-at-foot (yaf) stage when kangaroos permanently exit the pouch. we have examined the thermal biology of yaf red kangaroos during ages from permanent pouch exit until weaning. over a wide range of environmental temperatures (ambient temperature [t(a)] -5 degrees to 45 degrees c), y ... | 2006 | 11731983 |
| cloning of the red kangaroo (macropus rufus) follicle stimulating hormone beta subunit. | the cdna encoding the follicle stimulating hormone beta subunit (fsh-beta) was isolated from a red kangaroo pituitary cdna library by using a porcine probe and the nucleotide sequence for the coding region was determined. the highest degree of deduced amino acid sequence identity (91%) was observed between the red kangaroo and another marsupial, the brushtail possum (trichosurus vulpecula), followed by eutherian species (76%, 75% and 74%, respectively, for pig, mouse and sheep). based on the ded ... | 1998 | 11596876 |
| free-ranging heart rate, body temperature and energy metabolism in eastern grey kangaroos (macropus giganteus) and red kangaroos (macropus rufus) in the arid regions of south east australia. | eastern grey kangaroos (macropus giganteus) are generally regarded as mesic inhabitants. even though access to drinking water in permanent stock watering troughs is commonly available, these animals are still found in only low densities in arid pastoral areas. we hypothesised that the differential success of red and grey kangaroos in the arid zone may be due to higher energy requirements of m. giganteus with a concomitant need for increased food, rather than limitations imposed by inadequate wat ... | 2001 | 11497128 |
| single-strand conformation polymorphism analysis of genetic variation in labiostrongylus longispicularis from kangaroos. | single-strand conformation polymorphism (sscp) analysis was employed to screen for sequence heterogeneity in the second internal transcribed spacer (its-2) of ribosomal (r) dna of labiostrongylus longispicularis, a parasitic strongylid nematode occuring in some species of kangaroo in different geographical regions of australia. the results showed that most of the nematodes screened had different sscp profiles, which were subsequently shown to correspond to polymorphisms and/or an indel in the it ... | 2001 | 11465490 |
| secretion of whey acidic protein and cystatin is down regulated at mid-lactation in the red kangaroo (macropus rufus). | milk collected from the red kangaroo (macropus rufus) between day 100 and 260 of lactation showed major changes in milk composition at around day 200 of lactation, the time at which the pouch young begins to temporarily exit the pouch and eat herbage. the carbohydrate content of milk declined abruptly at this time and although there was only a small increase in total protein content, sds page analysis of milk revealed asynchrony in the secretory pattern of individual proteins. the levels of alph ... | 2001 | 11440871 |
| the laminar structure of the common opossum masseter (didelphis marsupialis). | using three heads of the common opossum (didelphis marsupialis), which may be considered to have a primitive mammalian form and therefore be appropriate for this study, the laminar structure of the masseter was investigated. we also attempted a comparative anatomical study of the relationships of food habits to the laminar structures of the masseter, zygomatic arch and mandibular ramus. in the common opossum masseter, a total of six layers, the primary and secondary sublayers of the superficial ... | 2001 | 11392012 |
| mutation scanning analysis of sequence heterogeneity in the second internal transcribed spacer (rdna) within some members of the hypodontus macropi (nematoda: strongyloidea) complex. | single-strand conformation polymorphism analysis was employed to investigate sequence variation in the second internal transcribed spacer (its-2) of nuclear ribosomal dna within and among individuals representing three operational taxonomic units (otus) of hypodontus macropi from different species of australian macropodid marsupials. of the 96 nematodes analysed, totals of 3 (otu1 from petrogale persephone), 10 (otu2 from macropus robustus) and 7 (otu9 from macropus rufus) representative individ ... | 2001 | 11358128 |
| erythrocyte osmotic fragility of red (macropus rufus) and grey (macropus fuliginosus and macropus giganteus) kangaroos and free-ranging sheep of the arid regions of australia. | the mean corpuscular fragility (mcf) of erythrocytes may reflect phylogenetic characteristics as well as an animal's ability to respond to the osmotic challenges associated with cyclic dehydration and rehydration. this type of ecophysiological stress is commonly encountered by animals living in arid regions and low mcf may contribute to their ability to survive and thrive in these xeric habitats. the eastern grey kangaroo has only in recent times extended its range into the arid zone, and is con ... | 2001 | 11263725 |
| jaw-closing muscles of kangaroos express alpha-cardiac myosin heavy chain. | the masseter muscle of eutherian grazing mammals typically express beta or slow myosin heavy chain (myhc). myosins in the masseter of 4 species of kangaroos and a slow limb muscle of one of them were compared with their cardiac myosin by pyrophosphate and sodium dodecyl sulphate (sds) gel electrophoresis, immunoblotting and immunohistochemistry. it was found that ventricular muscle contains three isoforms homologous to v1 (alpha-myhc homodimer), v2 (heterodimer) and v3 (beta-myhc homodimer) of e ... | 2000 | 11227794 |
| selective stimulation and blockade of beta-adrenergic receptors in the mandibular gland of the red kangaroo, macropus rufus. | intracarotid infusions of noradrenaline (0.15 nmol x kg(-1) x min(-1)) either alone or accompanied by phentolamine (1.5 nmol x kg(-1) x min(-1)) caused similar-sized increases in salivary protein, magnesium and bicarbonate, and decreases in osmolality, sodium, potassium and chloride whereas intravenous noradrenaline stimulated much smaller responses. concurrent infusions of the beta1-antagonist, cgp20712a, blocked these noradrenaline-induced changes in salivary composition more effectively than ... | 2000 | 11192265 |
| ventilatory accommodation of oxygen demand and respiratory water loss in kangaroos from mesic and arid environments, the eastern grey kangaroo (macropus giganteus) and the red kangaroo (macropus rufus). | we studied ventilation in kangaroos from mesic and arid environments, the eastern grey kangaroo (macropus giganteus) and the red kangaroo (macropus rufus), respectively, within the range of ambient temperatures (t(a)) from -5 degrees to 45 degrees c. at thermoneutral temperatures (ta=25 degrees c), there were no differences between the species in respiratory frequency, tidal volume, total ventilation, or oxygen extraction. the ventilatory patterns of the kangaroos were markedly different from th ... | 2006 | 10893178 |
| thermoregulation by kangaroos from mesic and arid habitats: influence of temperature on routes of heat loss in eastern grey kangaroos (macropus giganteus) and red kangaroos (macropus rufus). | we examined thermoregulation in red kangaroos (macropus rufus) from deserts and in eastern grey kangaroos (macropus giganteus) from mesic forests/woodlands. desert kangaroos have complex evaporative heat loss mechanisms, but the relative importance of these mechanisms is unclear. little is known of the abilities of grey kangaroos. our detailed study of these kangaroos' thermoregulatory responses at air temperatures (t(a)) from -5 degrees to 45 degrees c showed that, while some differences occur, ... | 2006 | 10893177 |
| 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 ... | 2000 | 10884138 |
| blockade of isoprenaline-induced fluid and protein secretion by the mandibular glands of the red kangaroo, macropus rufus, with selective antagonists. | selective and non-selective beta-adrenoceptor antagonists were used to block the increases in fluid and protein secretion caused by sympathomimetic stimulation of the mandibular gland of red kangaroos during intracarotid infusion of isoprenaline. atenolol or ici118551 at antagonist:agonist ratios up to 300:1 caused increasing but incomplete blockade of fluid secretion and protein release. both selective antagonists had equal potency and both antagonists were more effective at blocking protein re ... | 2000 | 10869482 |
| effect of beta-antagonists on isoprenaline-induced secretion of fluid, amylase and protein by the parotid gland of the red kangaroo, macropus rufus. | selective and non-selective beta-adrenoceptor antagonists were used to block the increases in fluid, protein and amylase secretion caused by sympathomimetic stimulation of the parotid gland of red kangaroos during intracarotid infusion of isoprenaline. ici118551 at antagonist/agonist ratios up to 300:1 caused increasing but incomplete blockade of fluid secretion, and protein/amylase release. atenolol at antagonist/agonist ratios up to 300:1 was only marginally more potent than ici118551 at block ... | 2000 | 10825691 |
| lamination of the masticatory muscles in the kangaroo according to their innervation. | an analysis of the laminations of the masseteric, zygomaticomandibular and temporalis muscles of the red kangaroo (macropus rufus) and all of the masticatory muscles of the eastern gray kangaroo (macropus giganteus) was carried out based on their innervation. the masseteric muscle was divided into superficial and deep layers; the superficial layer was further subdivided into three laminae from the rostro-lateral portion to caudo-internal portion. the deep layer was divided into lateral, caudo-in ... | 2000 | 10774228 |
| olfactory function in the red kangaroos (macropus rufus) assessed using odor-cued taste avoidance. | each of six kangaroos, tested in a seminatural environment. learned to respond readily to water and to sniff at but not ingest an aqueous solution of 0.1% isoamyl acetate plus 0.5% quinine. avoidance of the odor stimulus typically occurred after licking at the solution on two to three trials for most subjects. kangaroos also learned to avoid lower concentrations of isoamyl acetate and to discriminate between isoamyl acetate and ethyl acetate. these results are among the first to document olfacto ... | 1999 | 10497954 |
| energetics and biomechanics of locomotion by red kangaroos (macropus rufus). | as red kangaroos hop faster over level ground, their rate of oxygen consumption (indicating metabolic energy consumption) remains nearly the same. this phenomenon has been attributed to exceptional elastic energy storage and recovery via long compliant tendons in the legs. alternatively, red kangaroos may have exceptionally efficient muscles. to estimate efficiency, we measured the metabolic cost of uphill hopping, where muscle fibers must perform mechanical work against gravity. we found that u ... | 1998 | 9787777 |
| enzyme activity in parotid and mandibular saliva from red kangaroos, macropus rufus. | parotid and mandibular saliva was obtained from red kangaroos by concurrent acetylcholine isoprenaline stimulation. salivary proteins were separated by horizontal electrophoresis on either cellulose acetate or starch gels and assessed by specific staining techniques for 23 enzymes commonly found in mammalian tissues and body fluids. parotid saliva was positive for acid phosphatase, alpha-amylase, carbonic anhydrase, glucose-6-phosphate dehydrogenase, sorbitol dehydrogenase and superoxide dismuta ... | 1998 | 9783823 |
| hepatotoxicity and secondary photosensitization in a red kangaroo (megaleia rufus) due to ingestion of lantana camara. | three red kangaroos (megaleira rufus), an adult male, an adult female, and a yearling, were exposed in bedding and food to coastal bermuda hay that contained the toxic plant lantana camara. the adult male exhibited signs of anorexia, depression, lethargy, and jaundice. the adult female was presented dead. after 1 wk, following exposure to sunlight, the adult male and a yearling joey developed exudative dermatitis of the ear margins, eyelids, muzzle, and scrotum and opacity of the corneas. the ad ... | 1998 | 9732038 |
| cdna cloning of luteinizing hormone subunits from brushtail possum and red kangaroo. | luteinizing hormone (lh) plays an important role in the reproductive cycles of all mammals. there is a large amount of both nucleotide and amino acid sequence data available for lh from eutherian mammals, but little is known about the primary structure of lh in marsupials. we have used consensus pcr primers to generate specific probes for screening pituitary cdna libraries and report the cloning of the cdnas encoding the alpha-subunit of lh (also shared by a number of other glycoprotein hormones ... | 1998 | 9680384 |
| molecular population genetics of the red kangaroo (macropus rufus): mtdna variation. | the genetic population structure of a large, wide-ranging marsupial, the red kangaroo (macropus rufus) was assessed using sequence and haplotype frequency data of mitochondrial dna (mtdna) from locations across the species range in australia. results from sequence data revealed extensive haplotype diversity within the red kangaroo (32/34 sequences were unique). sequence diversity was distributed within rather than between geographical regions across the species range. genetic connectivity across ... | 1998 | 9640648 |
| the effect of transport-blocking drugs on secretion of fluid and electrolytes by the mandibular gland of red kangaroos, macropus rufus. | mechanisms of primary fluid formation by macropodine mandibular glands were investigated in anaesthetized red kangaroos using ion-transport and carbonic anhydrase inhibitors. bumetanide at carotid plasma concentrations of 0.005-0.1 mmol/l progressively reduced a stable, acetylcholine-evoked flow rate of 1.02 +/- 0.024 ml/min to 0.16 +/- 0.016 ml/min (mean +/- sem). concurrently, saliva [na], [cl] and osmolality decreased, [k] and [hco3] increased and hco3 excretion was unaffected. high-rate chol ... | 2013 | 9447260 |
| sry and karyotypic status of one abnormal and two intersexual marsupials. | an intersexual agile wallaby (macropus agilis) with a penis, a pouch and four teats had a sex-chromosome constitution of xxy in lymphocytes and cultured fibroblasts; the sex-determining region y (sry) gene was present, consistent with the presence of a testis. an intersexual eastern grey kangaroo (macropus giganteus) with a small empty scrotum and no penis, and an abnormal red kangaroo (macropus rufus) with no penis, pouch or teats, both had xx sex-chromosome complements; the sry gene was not pr ... | 1997 | 9208434 |
| a new family of entodiniomorph protozoa from the marsupial forestomach, with descriptions of a new genus and five new species. | a unique group of entodiniomorph protozoa was found in forestomach contents from quokka (setonix brachyurus), western grey kangaroo (macropus fuliginosus), red kangaroo (macropus rufus) and euro (macropus robustus erubescens). a new genus, macropodinium n.g., containing five new species, is described. three species are described from forestomach contents of the quokka: macropodinium baldense n. sp., macropodinium moiri n. sp. and macropodinium setonixum n. sp. a single species, macropodinium enn ... | 1996 | 8768432 |
| 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 ... | 1996 | 8729941 |
| diffusional water permeability of mammalian red blood cells. | an extensive programme of comparative nuclear magnetic resonance measurements of the membrane diffusional permeability for water (pd) and of the activation energy (ea,d) of this process in red blood cells (rbcs) from 21 mammalian species was carried out. on the basis of pd, these species could be divided into three groups. first, the rbc's from humans, cow, sheep and "large" kangaroos (macropus giganteus and macropus rufus) had pd values approximately 5 x 10(-3) cm/s at 25 degrees and 7 x 10(-3) ... | 1995 | 8590380 |
| mechanisms of fluid and ion secretion by the parotid gland of the kangaroo, macropus rufus, assessed by administration of transport-inhibiting drugs. | possible mechanisms of primary fluid formation by macropodine parotid glands were investigated in anaesthetized red kangaroos using ion transport inhibitors. carotid plasma amiloride concentrations of 0.05-0.5 mmol.l-1 progressively reduced a stable acetylcholine-evoked half-maximal flow rate of 2.0 +/- 0.04 to 0.22 +/- 0.024 ml.min-1 (mean +/- sem). concurrently, saliva bicarbonate concentration and secretion fell (135 +/- 1.6 to 67 +/- 1.7 mmol.l-1 and 272 +/- 7.6 to 15 +/- 2.6 mumol.min-1, re ... | 1995 | 8576452 |
| fine structure of the retinal epithelial regions of the red kangaroo (macropus rufus). | the fine structure of the retinal epithelium, bruch's membrane, and choriocapillaris has been studied by electron microscopy in the red kangaroo (macropus rufus). the retinal epithelium consists of a single layer of pigmented, squamous cells. the epithelial cells are joined laterally by tight junctions and throughout the retina, display numerous basal infoldings and apical processes that enclose photoreceptor outer segments. the retinal epithelial cells are rich in smooth endoplasmic reticulum a ... | 1993 | 8338231 |
| running springs: speed and animal size. | trotting and hopping animals use muscles, tendons and ligaments to store and return elastic energy as they bounce along the ground. we examine how the musculoskeletal spring system operates at different speeds and in animals of different sizes. we model trotting and hopping as a simple spring-mass system which consists of a leg spring and a mass. we find that the stiffness of the leg spring (k(leg)) is nearly independent of speed in dogs, goats, horses and red kangaroos. as these animals trot or ... | 1993 | 8294853 |
| phosphoglycerate kinase pseudogenes in the tammar wallaby and other macropodid marsupials. | phosphoglycerate kinase (ec 2.7.2.3; pgk) exists in two forms in marsupials. pgk1 is an x-linked house-keeping enzyme, and pgk2 is a mainly testis-specific enzyme under autosomal control. we have used pgk1 probes derived from two closely related species of macropodid marsupials (kangaroos and wallabies) to demonstrate the existence of a large family of pseudogenes in the tammar wallaby (macropus eugenii). over 30 fragments are detectable after taq digestion. we estimate that there are 25-30 copi ... | 1994 | 8000135 |
| phenypressin (phe2-arg8-vasopressin), a new neurohypophysial peptide found in marsupials. | recent investigations on marsupial neurohypophysial hormones have revealed that species belonging to the australian family macropodidae and the american family didelphidae have, apart from an oxytocin-like hormone, two vasopressin-like peptides which can be separated either by ion-exchange chromatography or chromatoelectrophoresis. the major pressor hormone of two australian species, the red kangaroo (macropus rufus) and the tammar (macropus eugenii), has been identified as lysine vasopressin by ... | 1980 | 7432483 |
| identification of lysine vasopressin in two australian marsupials, the red kangaroo and the tammar. | 1980 | 7417335 | |
| an outbreak of pasteurellosis in kano zoo. | an outbreak of pasteurellosis caused by pasteurella multocida is reported in which six elands (taurotragus oryx), a gnu (connochaetes taurinus albojubatus), a zebra (equus bruchelli), five kangaroos (macropus rufus), an ostrich (struthio camelus camelus) and a bateleur eagle (terathopius ecaudatus) died in kano zoological gardens toward the end of the rainy season of 1978. confirmation was based on cultural isolation of p. multocida. analysis of likely factors that could have contributed to the ... | 1980 | 7373722 |
| comparative studies of alpha-lactalbumin and lysozyme: the proteins of kangaroo (megaleia rufa and macropus giganteus) and horse (equus caballus). | as part of a study of the 'whey' proteins of various mammals, a comparison is made of the alpha-lactalbumins and lysozymes of the kangaroo and horse. in the milk of the red kangaroo (megaleia rufa) there is only one alpha-lactalbumin and it occurs throughout lactation, but no lysozyme has been detected. there are two alpha-lactalbumins in the milk of the grey kangaroo (macropus giganteus), one, designated alpha-lactalbumin zone b, is present throughout lactation; the second, designated alpha-lac ... | 1980 | 7366582 |
| an autosomal gene assignment in a marsupial: the gene for ldh-a is on chromosome 5 of the red kangaroo, macropus rufus. | a number of somatic cell hybrids between red kangaroo (macropus rufus) and mouse cells, which lose marsupial chromosomes, were found to express the kangaroo form of ldh-a. concordance between the expression of marsupial ldh-a and the presence of chromosome 5 in the hybrid cells and selected subclones enabled the gene for ldh-a to be assigned to this chromosome. this is the first autosomal gene assignment in a marsupial and should prove important for chromosome mapping in the red kangaroo and in ... | 1981 | 7332531 |
| 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 ... | 1981 | 7295212 |
| phylogeny of neurohypophyseal hormones. vasopressin polymorphism in three kangaroo species. | the neurohypophyseal hormones of three species of australian marsupials belonging to the family macropodidae (macropus rufus, macropus giganteus, macropus robustus) have been investigated. in these species three active peptides have been disclosed, one with oxytocic activity and two with pressor activity. the three hormones are present in all the individual glands which have been examined. purification has been undertaken by ion-exchange chromatography and paper chromatoelectrophoresis. the more ... | 1981 | 7228493 |
| morphological observations on the diapausing blastocyst of some macropodid marsupials. | diapausing blastocysts from the uteri of females of 11 macropodid species were fixed, torn, flattened and stained for examination of the protoderm. the protoderm remained undifferentiated and unilaminar throughout diapause. the number of cells in the protoderm did not vary with age in macropus rufus or m. eugenii. protoderm cell number decreased slightly with age in m. rufogriseus banksianus and appeared to decrease in potorous tridactylus. the diameter of the shell did not change appreciably wi ... | 1981 | 7205794 |
| mapping a marsupial x chromosome using kangaroo-mouse somatic cell hybrids. | a series of marsupial-eutherian somatic cell hybrids was produced by fusion between lymphocytes from the red kangaroo (macropus rufus) and hprt-deficient mouse cells. the hybrids lost marsupial chromosomes and could therefore be used to map marsupial genes. several of the hybrids contained a complete red kangaroo x chromosome and expressed the kangaroo form of the enzymes hprt, g6pd, and pgka. a number of hprt-deficient revertant cell lines were derived from the hybrids. these possessed a variet ... | 1981 | 7194766 |
| the mammary glands of the tammar wallaby (macropus eugenii) during pregnancy and lactation. | the 4 mammary glands of a nulliparous tammar wallaby differentiate during the 27-day pregnancy in preparation for lactation. alveoli increase in size and number in the first half of gestation, and this increase continues slowly to term. at or soon after parturition the alveolar lumina enlarge as the gland to which the young is attached begins to secrete. the connective tissue stroma of the gland is progressively replaced throughout pregnancy and lactation with glandular tissue. gross dimensions ... | 1982 | 7077604 |
| identification of mesotocin, lysine vasopressin, and phenypressin in the eastern gray kangaroo (macropus giganteus). | the neurohypophysial hormones of the eastern gray kangaroo (macropus giganteus) have been isolated through molecular sieving and paper chromatoelectrophoresis. one oxytocin-like and two vasopressin-like peptides have been found. these peptides have been characterized by amino acid analysis. mesotocin ([ile8]-oxytocin), has been identified both by amino acid composition and by behavior in partition chromatography. lysine vasopressin has been characterized by amino acid composition and by partial ... | 1983 | 6826050 |
| [evolution of vasopressins in marsupials: a new hormone, phenypressin (phe2-arg8-vasopressin), present in the macropodidae]. | a duplication of the pressor hormone has been found in some marsupials, either american species belonging to the family didelphidae or australian species belonging to the family macropodidae. two pressor peptides, lysine vasopressin and phenypressin (phe2-arg8-vasopressin) have been chemically identified in the red kangaroo (macropus rufus) and the tammar (macropus eugenii). in contrast, the brush-tailed possum (trichosurus vulpecula), a species belonging to the family phalangeridae, has a singl ... | 1980 | 6780214 |
| marsupial neurohypophysial hormones: identification of mesotocin, lysine vasopressin, and phenypressin in the quokka wallaby (setonix brachyurus). | the neurohypophysial hormones of the quokka wallaby (setonix brachyurus) have been isolated through preparative high pressure liquid chromatography (hplc). one oxytocin-like and two vasopressin-like peptides have been found. these peptides have been characterized by their amino acid composition and by their retention time in hplc. mesotocin ([i1e8]-oxytocin) has been identified by amino acid composition, polar partition chromatography, high pressure liquid chromatography with a reversed phase co ... | 1983 | 6618161 |
| "whey" proteins of milk of the red (macropus rufus) and eastern grey (macropus giganteus) kangaroo. | 1. a comparison is made of gel electrophoretic patterns of the "whey" proteins of the milk of red (macropus rufus) and eastern grey (macropus giganteus) kangaroos at various stages of lactation. qualitative and quantitative changes occur with time during the mature phase of lactation of both types. their onset is related solely to the stage of lactation. "whey" proteins are isolated and characterised and the nature of protein changes determined for the first time. 2. the anodic electrophoretic p ... | 1983 | 6600992 |
| immunology of pouch young marsupials. i. levels of immunoglobulin transferrin and albumin in the blood and milk of euros and wallaroos (hill kangaroos: macropus robustus, marsupialia). | the concentration of total protein, albumin, transferrin, and immunoglobulin g of adult serum, pouch young serum, milk whey and colostrum has been estimated in three species of kangaroos, macropus robustus, macropus rufus (= megaleia rufa) and macropus giganteus. no study of this kind has previously been published for any marsupial species. the three individual proteins were antigenically identical in all four kinds of fluid. colostrum and milk whey are relatively enriched in transferrin but hav ... | 1984 | 6519341 |
| electrolyte composition of parotid saliva from sodium-replete red kangaroos (macropus rufus). | saliva was collected from the parotid salivary gland of anaesthetized sodium-replete red kangaroos (macropus rufus) by catheterization of the parotid duct through its opening in the mouth. salivary secretion was stimulated by ipsilateral intracarotid infusion of acetylcholine at varying rates to produce salivary flow rates ranging from 0.056 +/- 0.0042 (s.e. of mean) to 4.509 +/- 0.1136 ml min-1. the concentrations of sodium (142.2 +/- 1.93 to 157.0 +/- 1.17 mmol l-1), calcium (40.1 +/- 7.08 to ... | 1984 | 6491590 |
| detection and control of rotavirus infections in zoo animals. | fecal specimens from 15 exotic animal species, with and without diarrhea, were examined for the presence of rotavirus, bacterial enteropathogens, and intestinal parasites. a commercial enzyme-linked immunosorbent assay was used to detect antigens of rotavirus. rotavirus was detected in the feces of 20 (57%) of 35 of the animals, which included addax (addax nasomaculatus), nyala (tragelaphus angasi), saiga (saiga tatarica), white-tailed gnu (connochaetus gnou), greater kudu (tragelaphus strepsice ... | 1983 | 6315660 |
| 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 ... | 1982 | 6293435 |
| prolactin and luteinizing hormone receptors in marsupial corpora lutea: relationship to control of luteal function. | prolactin and lh receptor concentrations in tammar wallaby corpora lutea (cl) have been examined and related to the control of luteal function in this and other marsupial species. during embryonic diapause, quiescent cl contained high concentrations of prolactin receptors. this was consistent with an earlier suggestion that prolactin may act directly on the cl to maintain its quiescent state. however, despite an apparent seasonal change in the mechanism by which the cl is maintained in quiescenc ... | 1982 | 6276490 |
| inhibition of ovulation by the corpus luteum in the red kangaroo, megaleia rufa. | 1967 | 6068582 | |
| changes in milk composition of the red kangaroo, megaleia rufa (desmarest), during lactation. | 1967 | 6067636 | |
| a specific protein difference in the milk from two mammary glands of a red kangaroo. | 1966 | 6008522 | |
| specific milk proteins associated with resumption of development by the quiescent blastocyst of the lactating red kangaroo. | 1966 | 5949521 | |
| termination of embryonic diapause in the red kangaroo, megaleia rufa, by injection of progesterone or oestrogen. | 1968 | 5644489 | |
| glyceraldehyde-3-phosphate dehydrogenase from the red kangaroo (megaleia rufa): purification and the amino acid sequence around a reactive cysteine. | 1971 | 5579442 | |
| studies on marsupial proteins. iv. amino acid sequence of myoglobin from the red kangaroo, megaleia rufa. | 1971 | 5553675 | |
| the type ii arylsulphatases of the red kangaroo. | 1971 | 5543582 | |
| absence of countercurrent exchange of oxygen, carbon dioxide, hydrogen ions or glucose between the arterial and venous blood in the spermatic cords of rams and two marsupials (macropus eugenii and megaleia rufa). | 1969 | 5357945 | |
| blood chemistry and gastro-intestinal changes in the developing red kangaroo (megaleia rufa, desmarest). | 1972 | 5065475 | |
| the nuclei of the cochlear nerve of the red kangaroo, megaleia rufus. | 1973 | 4791638 | |
| mother-young relations and early behavioural development in the marsupials macropus eugenii and megaleia rufa. | 1973 | 4782236 | |
| isolation of rugopharynx delta from a wallaby (macropus rufus). | 1972 | 4661008 | |
| cellular degeneration in the testis of red kangaroos during hot weather and drought in central australia. | 2015 | 4522372 | |
| molluscum contagiosum in a red kangaroo. | 1974 | 4451533 | |
| the restraint of red kangaroos using etorphine-acepromazine and etorphine-methotrimeprazine mixtures. | 1974 | 4447529 | |
| carbohydrates of the prostate of two australian marsupials, trichosurus vulpecula and megaleia rufa. | 1974 | 4412309 | |
| adrenal insufficiency in the red kangaroo (megaleia rufa, desm.). | 2011 | 4411880 | |
| sleep and other behaviours of the red kangaroo (megaleia rufa). | 1970 | 4324127 | |
| forelimb blood flow and saliva spreading in the thermoregulation of the red kangaroo, megaleia rufa. | 1974 | 4153851 | |
| thermoregulatory responses of the arid zone kangaroos, megaleia rufa and macropus robustus. | 1973 | 4147795 | |
| 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, ... | 1985 | 4051902 |
| 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 ... | 1985 | 3930707 |
| 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 ... | 1985 | 3834888 |
| effects of flow rate, duration of stimulation and mineralocorticoids on the electrolyte concentrations of mandibular saliva from the red kangaroo (macropus rufus). | mandibular saliva was collected at eight flow rates ranging between 0.052 +/- 0.0059 (s.e. of mean) and 4.294 +/- 0.0717 ml min-1 from anaesthetized red kangaroos receiving ipsilateral intracarotid infusions of acetylcholine. the concentrations of sodium (4.04 +/- 0.759 to 75.9 +/- 4.64 mmol l-1) and chloride (51.2 +/- 2.46 to 85.0 +/- 6.90 mmol l-1) and the osmolality (99.7 +/- 4.88 to 178.9 +/- 13.50 mosmol kg-1) were positively correlated with salivary flow rate over most or all of the flow r ... | 1986 | 3805995 |
| nadh-methemoglobin reductase activity in the erythrocytes of newborn and adult mammals. | nadh-mr activity was measured in the erythrocytes of newborn and adult horses, pigs, cattle, sheep, goats, red kangaroos, fruit bats, rats, mice, rabbits and humans. our results fail to support an earlier hypothesis that higher nadh-mr activity may be an adaptation to increased ruminal nitrite production leading to accelerated oxidation of fetal hemoglobin. | 1986 | 3780953 |
| a comparison of the intrinsic fluorescence of red kangaroo, horse and sperm whale metmyoglobins. | several metmyoglobins (red kangaroo, horse and sperm whale), containing different numbers of tyrosines, but with invariant tryptophan residues (trp-7, trp-14), exhibit intrinsic fluorescence when studied by steady-state front-face fluorometry. the increasing tyrosine content of these myoglobins correlates with a shift in emission maximum to shorter wavelengths with excitation at 280 nm: red kangaroo (tyr-146) emission maximum 335 nm; horse (tyr-103, -146) emission maximum 333 nm; sperm whale (ty ... | 1986 | 3730392 |
| high mobility group (hmg) proteins in the tammar wallaby macropus eugenii: quantitative variations between tissues and testis-specific co-extracted proteins. | 1. tammar wallaby (macropus eugenii, marsupialia) proteins with similar electrophoretic mobilities to calf non-histone chromosomal proteins hmg 1, 2, 14 and 17 are perchloric acid extracted from whole tissues (liver, kidney, spleen, brain and testis) and purified liver nuclei (using pca or 0.35 m nacl). 2. tammar and calf hmg 1 have similar amino acid compositions. 3. two testis-specific basic proteins co-extracting with hmg-like proteins from both tammar and red kangaroo (megaleia rufa) are fou ... | 1987 | 3621908 |
| the myoglobin protein radical. coupling of tyr-103 to tyr-151 in the h2o2-mediated cross-linking of sperm whale myoglobin. | sperm whale metmyoglobin, which has tyrosine residues at positions 103, 146, and 151, dimerizes in the presence of h2o2. equine metmyoglobin, which lacks tyr-151, and red kangaroo metmyoglobin, which lacks tyr-103 and tyr-151, do not dimerize in the presence of h2o2. the dityrosine content of the sperm whale myoglobin dimer shows that it is primarily held together by dityrosine cross-links, although more tyrosine residues are lost than are accounted for by dityrosine formation. digestion of the ... | 1988 | 3182873 |
| [muscle spindle distribution of masticatory and prevertebral muscles with special reference to histological properties of pouch and biological significance in red kangaroo, macropus rufus]. | 2010 | 2956346 | |
| 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 ... | 1989 | 2759765 |
| characteristics of cardiac action potentials in marsupials. | standard microelectrode techniques were used to record action potentials from single atrial, ventricular and purkinje fibers of hearts taken from three species of marsupial (macropus rufus, macropus robustus and macropus eugenii) and from dogs, sheep and guinea-pigs. the major electrophysiological parameters of marsupial potentials were qualitatively similar to the values for placental mammals. the grouped data for ventricular action potentials from studies on 6 adult male red kangaroos (macropu ... | 1989 | 2715459 |
| secretion by the mandibular gland of the red kangaroo (macropus rufus) during isoprenaline infusion. | intracarotid infusion of isoprenaline, either alone or in combination with acetylcholine infusion was used to stimulate salivation by the mandibular glands of anaesthetized red kangaroos. isoprenaline alone (0.20-1.25 eta mol.kg-1.min-1) elicited flow rates ranging from 0.014 to 0.239 ml.min-1 (1.21-28.1 microliters.g gland-1.min-1). salivary concentrations of sodium, chloride, phosphate and urea were negatively correlated with flow, whereas potassium, calcium, magnesium, hydrogen ion, bi-carbon ... | 1989 | 2607021 |
| salivation in the red kangaroo (macropus rufus) during sympathetic nerve stimulation. | 1. continuous electrical stimulation at low frequency (5 hz) and short pulse duration (500 microseconds) of the cervical sympathetic trunk for periods up to 15 min caused no obvious flow from the parotid or mandibular glands of the red kangaroo. 2. higher frequencies combined with longer pulse durations caused both glands to secrete. flow reached maximum in less than 3 min and then declined but, on cessation of stimulation, flow increased again for a short period. this flow response may be cause ... | 1989 | 2566416 |
| histological properties and biological significance of pouch in red kangaroo, macropus rufus. | 2 embryos, 4 youngs, 4 older youngs and the pouch of 2 mothers of the red kangaroos were examined. the results obtained are as follows: 1. the initial muscle spindles are already observed light microscopically in the vertebral, dorsal neck and forelimb muscles of the newborn baby and a little bit later in the masticatory muscles of the young of 68 mm in craniorump length and 28 g in body weight. 2. in the skin with less hair lining the inner surface of the pouch, abundant apocrine large sweat gl ... | 1989 | 2523677 |
| the effect of beta-sympathomimetic stimulation on parotid salivation in the red kangaroo (macropus rufus). | salivation was stimulated by intracarotid isoprenaline infusion given alone or combined with acetylcholine. by itself, isoprenaline (0.12-1.2 nmol kg-1 min-1) stimulated flow rates of 0.037-0.233 ml min-1 (2.77-10.5 microliters/g gland per min). salivary na, cl, po4 and total solute concentrations were positively correlated with flow; k, mg and urea were negatively correlated with flow; and ca, h+, hco3, protein and amylase activity were not correlated with flow. relative to cholinergic saliva, ... | 1989 | 2480771 |
| amylase activity, protein and urea in saliva of the red kangaroo (macropus rufus). | parotid and mandibular salivas, produced at flow rates of 0.055 +/- 0.0038 to 4.45 +/- 0.101 and 0.052 +/- 0.0059 to 4.30 +/- 0.072 ml min-1 respectively by intracarotid infusion of acetylcholine or methacholine, were analysed. during acetylcholine stimulation, the protein concentration ranged from 86.4 +/- 10.17 to 235.0 +/- 23.5 mg l-1 in parotid and from 102.9 +/- 11.54 to 379.6 +/- 38.01 mg l-1 in mandibular saliva. the minimum protein concentrations in parotid and mandibular salivas occurre ... | 1987 | 2452626 |
| x-ray crystallography of incisor enamel from red kangaroo. | x-ray powder diffraction of red kangaroo (macropus rufus) dental enamel, with a relative density greater than 2.60, showed a longer a-axis length of the apatite unit cell, a = 9.462 a, a shorter c-axis length, c = 6.877 a, and a smaller crystallite size, ca. 185 a, than those of human dental enamel. the a-axis of red kangaroo dental enamel was one of the longest among the values reported previously, whereas the c-axis was one of the shortest. the crystallite size was almost equal to that of dent ... | 1990 | 2374023 |
| suspected lysosomal storage disease in kangaroos. | a probable neurovisceral lysosomal storage disease is reported, for the first time, in immature red and grey kangaroos (macropus rufus and m. giganteus). foamy, pale eosinophilic, periodic acid-schiff positive, intracytoplasmic material was stored in the liver, lymphoid tissue, kidney, adrenal gland, stomach, blood vessels and central nervous system. extensive wallerian-type degeneration was present in the central nervous system. electron microscopic study of one animal revealed electron dense, ... | 1990 | 2338732 |
| absence of an osseous patella and other observations in macropodidae stifle. | the patella is a large sesamoid bone that typically develops in the tendon of insertion of the large extensor muscles of the stifle joint. although present in almost all species of mammals and birds, it has been found to be absent in the red kangaroo and two wallaby species (family macropodidae). in its place is a fibrocartilage pad, located in the tendon of the quadriceps femoris muscle. this structure is visible grossly, is palpable, and has the form normally expected of a bony patella. in add ... | 1990 | 2297078 |
| metabolic effects of cortisol, acth, adrenalin and insulin in the marsupial sugar glider, petaurus breviceps. | the effects of cortisol, acth, adrenalin and insulin on indices of carbohydrate, fat and protein metabolism were investigated in the conscious marsupial sugar glider petaurus breviceps. short-term i.v. infusion of cortisol at dose rates of 0.02, 0.2 and 1.0 mg/kg per h caused the plasma glucose concentration to rise sharply from the normal range of 3.3-4.4 to 8.1-8.7 mmol/l at the end of the infusion period without significant alteration in plasma free fatty acid (ffa), amino acid or urea concen ... | 1990 | 2174452 |
| effect of phosphate-regulating hormones on plasma composition, cardiovascular function, and parotid salivary phosphate secretion in red kangaroos (macropus rufus). | the effects of administration of phosphate-regulating hormones on plasma composition, cardiovascular function, and secretion of phosphate and other electrolytes in parotid saliva were investigated in anesthetized red kangaroos. plasma [po4] was elevated by intravenous injections of 1,25-dihydroxycholecalciferol (1,25(oh)2d3) at 5 or 12.5 nmol/12 hr for 72 hr but was unaltered by intravenous or intracarotid infusion of either salmon or porcine calcitonins at rates up to 3.2 iu min-1 for 60 min or ... | 1991 | 2026317 |
| the effect of carbonic anhydrase inhibitors on secretion by the parotid and mandibular glands of red kangaroos macropus rufus. | the effects of carbonic anhydrase inhibitors on secretion by macropodine parotid and mandibular glands were investigated using anaesthetized red kangaroos. in the parotid gland, acetazolamide (500 mumol.l-1) reduced a stable acetylcholine-evoked, half-maximal flow rate of 2.02 +/- 0.034 to 0.27 +/- 0.023 ml.min-1 (87% reduction). concurrently, salivary bicarbonate concentration and secretion fell (129.4 +/- 1.46 to 80.9 +/- 1.63 mmol.l-1 and 264.8 +/- 7.96 to 22.3 +/- 2.30 mumol.min-1, respectiv ... | 1991 | 1783692 |
| 1h nmr spectroscopic survey of plasma and erythrocytes from selected marsupials and domestic animals of australia. | 1. 1h nmr spectra were acquired from whole plasma, intact erythrocytes, and ultrafiltrates of erythrocytes from nine native and eight introduced (domestic) australian animals; single-pulse, spin-echo and 2-dimensional spectra were obtained. the aim was to detect and at least semi-quantify metabolites in the samples and compare the profiles amongst the species. 2. the australian natives that were studied were all marsupials: greater brown bandicoot; bettong; eastern grey kangaroo; red kangaroo; k ... | 1991 | 1769206 |
| detection by allozyme electrophoresis of cryptic species of hypodontus macropi (nematoda: strongyloidea) from macropodid marsupials. | allozyme electrophoresis of 98 hypodontus macropi from eight different species of hosts using 24 enzymes revealed a complex of at least six sibling species, with 15-50% fixed genetic differences between taxa. except for the taxon parasitizing macropus rufus/m. robustus, pairs of parasite taxa were, in each case, sympatric at each locality examined, thus supporting the conclusion that they represent valid species. the existence of a series of host-specific nematode taxa explains many of the incon ... | 1992 | 1639562 |
| steatitis in a red kangaroo (macropus rufus) associated with a coccidia-like protozoon. | 1993 | 1554779 | |
| studies on metatherian sex chromosomes. i. inheritance and inactivation of sex-linked allelic genes determining glucose-6-phosphate dehydrogenase variation in kangaroos. | wallaroos (macropus robustus robustus), which have the g6pd-f electrophoretic phenotype, crossed with euros (m.r.erubescens), of g6pd-s phenotype, produced f1 animals which had only the maternal g6pd type regardless of the direction of the cross. when f1 hybrids were backcrossed to wallaroos or euros, backcross progeny of either perental phenotype resulted. sex-linked inheritance of allelic g6pd genes is shown to occur in wallaroos, euros and red kangaroos (m. rufus). dose compensation for x chr ... | 1975 | 1225290 |