| mixed-function oxidase activity in a desert rodent, notomys alexis. | 1. the levels of enzymes associated with the hapatic mixed-function oxidase system, and the rates of oxidation of three substrates, are compared in the desert rodent, notomys alexis, and the laboratory mouse, mus musculus. 2. in general, the activity of the mixed-function oxidase system in notomys alexis is greater than in mus musculus. 3. previous reports of the low rates of elimination of lipophilic compounds in the desert rodent are therefore not explicable by differences in metabolism. it is ... | 1979 | 524916 |
| proceedings: environmental control of ovarian function in the australian hopping mouse notomys alexis. | | 1974 | 4475675 |
| the australian rodents notomys alexis and pseudomys australis as laboratory animals. | | 1973 | 4807779 |
| streptobacillus moniliformis septicaemia in spinifex hopping mice (notomys alexis) | | 1981 | 7342940 |
| cdna nucleotide sequence encoding the zpc protein of australian hydromyine rodents: a novel sequence of the putative sperm-combining site within the family muridae. | this comparative study of the cdna sequence of the zona pellucida c (zpc) glycoprotein in murid rodents focuses on the nucleotide and amino acid sequence of the putative sperm-combining site. we ask the question: has divergence evolved in the nucleotide sequence of zpc in the murid rodents of australia? using rt-pcr and (race) pcr, the complete cdna coding region of zpc in the australian hydromyine rodents notomys alexis and pseudomys australis, and a partial cdna sequence from a third hydromyin ... | 2002 | 12463524 |
| the effect of water deprivation on the expression of atrial natriuretic peptide and its receptors in the spinifex hopping mouse, notomys alexis. | this study investigated the mrna expression of the atrial natriuretic peptide (anp) system (peptide and receptors) during water deprivation in the spinifex hopping mouse, notomys alexis, a native of central and western australia that is well adapted to survive in arid environments. initially, anp, npr-a and npr-c cdnas (partial for receptors) were cloned and sequenced, and were shown to have high homology with those of rat and mouse. using a semi-quantitative multiplex pcr technique, the express ... | 2002 | 12095869 |
| concurrent infection with cilia-associated respiratory bacillus and mycoplasmas in spinifex hopping-mice (notomys alexis) with pneumonia. | | 2001 | 11549052 |
| a comparative study of sperm production in two species of australian arid zone rodents (pseudomys australis, notomys alexis) with marked differences in testis size. | the plains rat, pseudomys australis, and the spinifex hopping mouse, notomys alexis, show marked differences in the size of their testes and in the number of spermatozoa within the epididymides. in the present study, the dynamics of sperm production and the duration of sperm transit along the male excurrent ducts were compared between these two species. the durations of the cycle of the seminiferous epithelium, spermatogenesis and sperm transit were determined by tracking cells using autoradiogr ... | 2001 | 11226048 |
| gastrocnemius muscle length in relation to knee and ankle joint angles: verification of a geometric model and some applications. | for understanding the relationship between skeletal muscle architecture and muscle function in vivo, the development of accurate geometric models relating muscle length to joint angles is crucial. therefore, a geometric model of the calf of mammals was developed to predict the length of the gastrocnemius muscle-tendon complex from knee and ankle angles. | 1997 | 8986296 |
| elastic and length-force characteristics of the gastrocnemius of the hopping mouse (notomys alexis) and the rat (rattus norvegicus). | the aim of this study was to compare the contractile and series elastic properties of terrestrial mammals that use bipedal versus quadrupedal gaits. the gastrocnemius muscle of the hopping mouse (body mass 30.2 +/- 2.4 g, mean +/- s.d.) and the rat (313 +/- 10.7 g) were compared with data from the literature for the wallaby and the kangaroo rat to distinguish scaling effects and locomotion-related effects on muscle properties. contractile length-force properties and series elastic stiffness were ... | 1996 | 8691113 |
| differentiation of major genotypes of giardia intestinalis by polymerase chain reaction analysis of a gene encoding a trophozoite surface antigen. | the polymerase chain reaction (pcr) has been used to amplify in vitro a semi-conserved region of a gene encoding an m(r) 68-72,000 surface antigen of giardia intestinalis trophozoites. using primers specific for conserved nucleotide sequences identified within the promoter-distal portion of two homologous genes (tsp11 and tsa417) cloned previously from the g. intestinalis isolates ad-1 (from australia) and wb (from afghanistan), a single pcr-amplified dna fragment of the expected size (0.52 kilo ... | 1993 | 8316431 |
| the contributions of renin and vasopressin to the adaptation of the australian spinifex hopping mouse (notomys alexis) to free water deprivation. | xeric-adaptation was studied during 28 days of total water deprivation (twd) in notomys alexis. beyond 7 days, the initial reductions in body weight and increases in haematocrit, plasma renin and juxtaglomerular (jg) cell morphological activity returned to normal. mus musculus showed similar changes at 7 days but could not be maintained thereafter. twd decreased the blood pressure of notomys but endogenous angiotensin and vasopressin did not support pressure to a greater extent than controls, as ... | 1994 | 7915648 |
| kidney function in the spinifex hopping mouse, notomys alexis. | notomys alexis (spinifex hopping mouse) is found in the arid zone of australia. the structure and function of the kidneys allow this species to conserve water. this study investigated the rate at which n. alexis can reduce urine volume and increase the concentration of electrolytes and solutes when water deprived. it also looked at the response to rehydration, following a period of water deprivation. the laboratory mouse, mus musculus domesticus, was used for comparison. n. alexis is able to red ... | 2008 | 17374563 |
| histology of accessory sex organs and extragonadal sperm reserves in the male hopping mouse notomys alexis. | in the hopping mouse, notomys alexis, there are very small testes and relatively low numbers of spermatozoa in the extragonadal ducts. large ventral prostates are present, but the seminal vesicles, coagulating glands, ampullaries, and dorsal prostates are all extremely small, although their histological structure and secretory activity is similar to that of the laboratory murids. bulbourethrals are typical, but the preputials are very small and composed of sebaceous secretory units and an associ ... | 1981 | 7316609 |
| the hypothalamo-neurohypophysial system of native australian desert rodents. the catecholamine contents of the hypothalamus and posterior pituitary of notomys alexis, pseudomys australis and the laboratory rat. | the putative central catecholamine neurotransmitters, adrenaline, noradrenaline and dopamine, have been quantified by enzyme radiochemical methods in the hypothalamo-neurohypophysial system (hns) of the xeric rodents, notomys alexis and pseudomys australis, using the laboratory rat for comparison. all three catecholamines were found (noradrenaline greater than dopamine greater than adrenaline) in the hypothalami of the three species. the hypothalami of the two xeric rodents contained some 5-10 t ... | 1982 | 7138416 |
| the hypothalamo-neurohypophysial system of native australian desert rodents. the vasopressin and oxytocin contents of hypothalamus and posterior pituitary of notomys alexis and pseudomys australis compared with those of the laboratory rat and mouse in different states of water balance. | the neurohypophysial hormones vasopressin (the antidiuretic hormone) and oxytocin have been quantified in xerophilic and mesophilic rodents under normal and dehydrated conditions in order to study the relative contribution of these hormones to survival under drought conditions. the ability to cope adequately with water deprivation or saline ingestion was found to be closely related to the magnitude (relative to body size) of pre-existing hormone stores in the neural lobe and to the subsequent ab ... | 1982 | 7138415 |
| method for the microassay of endogenous creatinine in blood and urine of small murid rodents. | the estimation of endogenous creatinine clearance yields information useful to the renal physiologist without the need to introduce a marker compound. the method has been limited in its application to mammalian species of bodyweight 200 g and above due to the blood sample size required. a modification is described whereby this procedure may be applied to animals of bodyweight as low as 25 g. use of this microassay is illustrated in an investigation of the effect of salt and urea loading on renal ... | 1982 | 7078068 |
| urea metabolism in isolated perfused lungs of the laboratory rat and of a desert rodent, notomys alexis. | 1. using the isolated perfused lung preparation we have demonstrated a low-activity ureolytic enzyme present in rodent lung tissue. the enzyme shares four characteristic features with jack bean urease (ec 3.5.1.5). 2. ureolytic activity was inhibited by fluoride ions and methionine hydroxamic acid; using the latter inhibitor, the i50 value and maximum inhibition were similar to those reported for jack bean urease. the apparent km for rat lung urease was similar to the plasma urea level. 3. the l ... | 1983 | 6131790 |
| phenol conjugation in the desert hopping mouse, notomys alexis. | | 1981 | 6116581 |
| an ethogram of the hopping mouse, notomys alexis. | | 1971 | 5168510 |
| ultrastructure of the epithelial cells of the ventral prostate from the hopping mouse notomys alexis. | the large ventral prostate of the hopping mouse has abundant secretory units whose epithelial cells vary in height and which often have nuclei in the apical region of the cell. tem observations indicated two epithelial cell types in which some unusual features occurred. type a cells had granular endoplasmetic reticulum (ger) whose membranes often formed intracytoplasmic confronting cisternae. type b cells had more fragmented and vesiculated ger with sparse ribosomes and less frequently also intr ... | 1985 | 3984670 |
| cytological organization of the seminiferous epithelium in the australian rodents pseudomys australis and notomys alexis. | absolute and relative testis mass of two species of conilurine rodents, the plains rat (pseudomys australis) and the hopping mouse (notomys alexis), were markedly different. in plains rats the testis comprised approximately 3% of body mass while in hopping mice they rarely accounted for more than 0.2%. in both species, 8 cellular associations, or cycle stages, were recognized in the seminiferous epithelium. the relative frequencies, and hence durations, of stages i to viii were 5.1, 7.0, 12.5, 1 ... | 1987 | 3598976 |
| ultrastructural features of the ventral prostate epithelial cells in the australian plains rat, pseudomys australis. | the fine structure of epithelial cells of the small ventral prostate of pseudomys australis males was studied. the cells were sometimes binucleated, exhibited relatively little granular endoplasmic reticulum, generally few secretory granules (probably reflecting a low proteinaceous secretory activity), but had abundant agranular endoplasmic reticulum (aer), similar to that in steroidogenic cells. some of the mitochondria also showed tubular cristae. furthermore, most cells had some irregular den ... | 1988 | 3227789 |
| light microscopical structure of the excurrent ducts and distribution of spermatozoa in the australian rodents pseudomys australis and notomys alexis. | the light microscopical structure of the male excurrent ducts and the distribution of spermatozoa were examined in two species of australian rodents, the plains rat, pseudomys australis, and the hopping mouse, notomys alexis. in plains rats the microstructure of the ductus epididymidis and ductus deferens was similar to that of the common laboratory rodents, with the majority of the spermatozoa being found in the cauda epididymides. by contrast, in the hopping mouse, the structure of the cauda e ... | 1989 | 2808117 |
| structure of the zona pellucida and cumulus oophorus in three species of native australian rodents. | the sperm head of many australian hydromyine rodents has three curved hooks projecting from its anterior margin; the structure of the hooks has been characterized, but their function is unknown. in this study, we have investigated whether the hooks might have evolved to assist sperm penetration through more formidable egg vestments, particularly the zona pellucida. cumulus-oocyte complexes were obtained from two species that possess a three-hooked sperm head (pseudomys australis and p. nanus) an ... | 1989 | 2777167 |
| organization of testicular interstitial tissue of an australian rodent, the spinifex hopping mouse, notomys alexis. | the organization of testicular interstitial tissue of the spinifex hopping mouse, notomys alexis differs from that of other rodents. it comprises between 10.3% and 17.3% (average 15.0%) of the total testicular volume, and is variable in its organization both at different locations within the testis of the one animal and among different individuals. abundant, closely packed leydig cells are usually present; however, in some regions large, thick-walled blood vessels and extensive peritubular lymph ... | 1990 | 2372806 |
| copulatory behaviour and coagulum formation in the female reproductive tract of the australian hopping mouse, notomys alexis. | hopping mice were examined to study two interrelated questions: (1) when groups of adults of both sexes are kept together in one cage in the laboratory is there evidence that the females copulate with only one male, and (2) is a copulatory plug formed in the female tract after ejaculation? the findings indicate that a female will sometimes lock with more than one male in the group during an oestrous period induced by administration of exogenous gonadotrophins, and that a small 'plug' of soft mat ... | 1990 | 2313635 |
| transillumination patterns of seminiferous tubules in two species of australian rodents, pseudomys australis and notomys alexis. | the transillumination-assisted isolation of segments of seminiferous tubules in defined stages of the wave of the seminiferous epithelium was investigated in pseudomys australis and notomys alexis. in p. australis, three different transillumination patterns (pale, spotty and dark) of the seminiferous tubules could be isolated. they corresponded to histological stages 1-2, 3-5 and 6-8 of the wave of the seminiferous epithelium. the dark pattern made up about 40% of the wave, the pale pattern abou ... | 1991 | 1947229 |
| mating behaviour and insemination in the hopping mouse (notomys alexis). | hopping mice have extremely small testes and a reduced complement of male accessory sex glands. nevertheless, greater than 1000 spermatozoa populate the isthmus of the oviduct after each insemination and a range of morphological types is found similar to that in the male tract. when females are primed with gonadotrophins they sometimes lock with more than one of the males within the group and in the present study two inseminations sometimes took place at the one oestrus. there is thus the possib ... | 1991 | 1920288 |
| environmental factors and reproduction in the female hopping mouse, notomys alexis. | australian hopping mice (notomy alexis) were subjected to short or long photoperiods, different social environments and/or water deprivation. the age at which vaginal opening and first oestrus occurred was delayed by short photoperiods and by the absence of male proximity. water deprivation prevented normal maturation. the normal 7 to 8 day oestrous cycle was prolonged by short photoperiods or water deprivation. animals deprived of water had lighter body, ovarian and uterine weights, and follicu ... | 1975 | 1239506 |
| studies on sperm storage in the vas deferens of the spinifex hopping mouse (notomys alexis). | the cauda epididymidis, with its relatively cool temperature (32-35 degrees c), is considered to be the main site of sperm storage in male mammals. however, in the adult male spinifex hopping mouse, notomys alexis, similar numbers of spermatozoa are found in the vas deferens to those in the cauda epididymidis. the present study shows that, unlike in the laboratory mouse in which spermatozoa of the vas deferens are found mainly in the epididymal region of the duct, spermatozoa in the hopping mous ... | 2003 | 12578537 |
| cloning and mrna expression of guanylin, uroguanylin, and guanylyl cyclase c in the spinifex hopping mouse, notomys alexis. | guanylin and uroguanylin are peptides that activate guanylyl cyclase c (gc-c) receptors in the intestine and kidney, which causes an increase in the excretion of salt and water. the spinifex hopping mouse, notomys alexis, is a desert rodent that can survive for extended periods without free access to water and it was hypothesised that to conserve water, the expression of guanylin, uroguanylin, and gc-c would be down-regulated to reduce the excretion of water in urine and faeces. accordingly, thi ... | 2003 | 12765657 |
| renal c-type natriuretic peptide and natriuretic peptide receptor b mrna expression are affected by water deprivation in the spinifex hopping mouse. | this study investigated the effect of water deprivation on the expression of c-type natriuretic peptide (cnp) and natriuretic peptide receptor b (npr-b) mrna, and the ability of npr-b to generate cgmp in the spinifex hopping mouse, notomys alexis. this rodent is a native of central and western australia that is well adapted to survive in arid environments. initially, cnp and npr-b cdnas (partial for npr-b) were cloned and sequenced, and were shown to have high homology with those of rat and mous ... | 2003 | 14613785 |
| comparative study of sperm chromatin condensation in the excurrent ducts of the laboratory mouse mus musculus and spinifex hopping mouse notomys alexis. | in most mammals, post-testicular sperm maturation is completed in the caput and corpus epididymides, with storage occurring in the cauda epididymides. however, in the spinifex hopping mouse, notomys alexis, epididymal sperm transit is rapid and some sperm storage occurs in the distal region of the vas deferens. the aim of the present study was to determine whether the rapid progression of sperm into the vas deferens in the hopping mouse results in late sperm maturation. to determine this, sperm ... | 2005 | 16263066 |
| balancing the competing requirements of saltatorial and fossorial specialisation: burrowing costs in the spinifex hopping mouse, notomys alexis. | semi-fossorial animals (burrowing surface foragers) need to balance the competing morphological requirements of terrestrial and burrowing locomotion. these species rarely show the same degree of claw, forelimb and pectoral girdle structural development that fully fossorial forms (burrowing subterranean foragers) do, but nevertheless invest considerable amounts of energy in burrow systems. the compromise between terrestrial and burrowing locomotion was investigated by measuring net costs of burro ... | 2006 | 16709912 |
| variation of sperm head shape and tail length in a species of australian hydromyine rodent: the spinifex hopping mouse, notomys alexis. | in australia, there are around 60 species of murid rodents that occur in the subfamily hydromyinae, most of which produce highly complex, monomorphic, spermatozoa in which the head has an apical hook together with two ventral processes containing filamentous actin and a long tail of species-specific length. one of the few exceptions to this is the spinifex hopping mouse, notomys alexis, whose spermatozoa have previously been shown to have pleiomorphic heads. in this study, the structural organis ... | 2006 | 17032589 |
| rodentolepis fraterna: the cause of mortality in a new host, the spinifex hopping mouse (notomys alexis). | | 2007 | 17300462 |
| isolation of the mite myocoptes musculinus koch from the spinifex hopping mouse (notomys alexis). | this paper reports on the isolation and identification of the fur-clasping mite, myocoptes musculinus, from the faeces of the spinifex hopping mouse (notomys alexis). this investigation adds to the sparse records of ectoparasites collected from native australian murids. | 2007 | 17430629 |
| the distribution of renal hyaluronan and the expression of hyaluronan synthases during water deprivation in the spinifex hopping mouse, notomys alexis. | hyaluronan (ha) is a glycosaminoglycan that is synthesized by a family of enzymes called hyaluronan synthases (hass), of which there are three isoforms (has1, 2 and 3) in mammals. the hass have different tissue expression patterns and function, indicating that synthesis of ha and formation of the ha matrix may be regulated by various factors. the ha matrix has an important role in renal water handling and the production of a concentrated urine. we investigated the distribution of ha and the expr ... | 2007 | 17904885 |
| the effect of water deprivation on the tonicity responsive enhancer binding protein (tonebp) and tonebp-regulated genes in the kidney of the spinifex hopping mouse, notomys alexis. | in desert rodents, the production of concentrated urine is essential for survival in xeric environments in order to conserve water. reabsorption of water in the kidney is dependent on large osmotic gradients in the renal medulla. this causes the renal cells to be bathed in a hypertonic extracellular fluid that can compromise cellular function. in response to hypertonicity, kidney cells accumulate compatible, non-ionic osmolytes that lower the ionic strength within the cells to isotonic levels by ... | 2008 | 18310110 |
| streptobacillus notomytis sp. nov., isolated from a spinifex hopping mouse (notomys alexis thomas, 1922), and emended description of streptobacillus levaditi et al. 1925, eisenberg et al. 2015 emend. | a pleomorphic, gram-negative, rod-shaped, indole-, oxidase- and catalase-negative, non-spore-forming, non-motile bacterium was isolated in 1979 from the heart of a spinifex hopping mouse (notomys alexis thomas, 1922) with septicaemia and stored as streptobacillus moniliformis in the strain collection of the animal health laboratory, south perth, western australia (ahl 370-1), as well as under ccug 12425. on the basis of 16srrna gene sequence analyses, the strain was assigned to the genus strepto ... | 2015 | 26438009 |
| three new species of the sucking louse genus <i>hoplopleura</i> (phthiraptera: anoplura: hoplopleuridae) from rodents (mammalia: rodentia: muridae) in northern australia. | three new species of the rodent louse genus hoplopleura (anoplura: hoplopleuridae) are described and illustrated from australia: h. melomydis new species from melomys burtoni (muridae: hydromyini, grassland melomys) and m. capensis (muridae: hydromyini, cape york melomys) from queensland; h. notomydis new species and h. setosa new species from notomys alexis (muridae: hydromyini, spinifex hopping mouse) from the northern territory. these new louse species are the first lice recorded from each of ... | 2017 | 28610084 |
| social behavior of the conilurine rodents (muridae) of australia. | this paper describes in detail the elements of social behaviour and social organizations of four closely related rodents (notomys alexis, pseudomys albocinereus, p. shortridgei and p. desertor) from diverse habitats, and the social organizations of seven other conilurine rodents are described briefly. most of the data were determined from quantitative observations of animals caged in twos or in larger groups for at least ten days. breeding pairs were observed daily throughout pregnancy and paren ... | 1976 | 1266428 |
| proceedings: morphological and functional attributes of the kidney of notomys alexis. | | 1974 | 4448790 |
| proceedings: scanning electron microscopy of the retina of notomys alexis. | | 1973 | 4791414 |
| Reproductive biology of an old endemic murid rodent of Australia, the Spinifex hopping mouse, Notomys alexis: adaptations for life in the arid zone. | The Spinifex hopping mouse (Notomys alexis Thomas, 1922) is an arid adapted Australo-Papuan old endemic rodent that undergoes boom and bust population cycles. In this communication, we review our findings on the timing of reproduction and the potential reproductive rate of this species. To investigate the first question, the reproductive condition of adult females, and occurrence of immatures, in a population on a cattle station in central Australia was determined and, for the second, data from ... | 2011 | 22182324 |
| dead mouse hopping: tyzzer's disease in spinifex hopping-mice (notomys alexis). | tyzzer's disease is caused by clostridium piliformes and affects a wide range of domestic and wildlife species. non-descript signs, if any, and a short incubation period make tyzzer's disease difficult to diagnose and treat before death occurs. here we describe an unexpected outbreak of tyzzer's disease in a colony of native australian spinifex hopping-mice (notomys alexis). in this study captive hopping-mice were used in a nutrition trial (n=11), and others were housed in close proximity (n=4). ... | 2017 | 28284611 |
| the role of leptin and ghrelin in appetite regulation in the australian spinifex hopping mouse, notomys alexis, during long-term water deprivation. | water deprivation of the spinifex hopping mouse, notomys alexis, induced a biphasic pattern of food intake with an initial hypophagia that was followed by an increased, and then sustained food intake. the mice lost approximately 20% of their body mass and there was a loss of white adipose tissue. stomach ghrelin mrna was significantly higher at day 2 of water deprivation but then returned to the same levels as water-replete (day 0) mice for the duration of the experiment. plasma ghrelin was unaf ... | 2017 | 27102941 |
| the role of refuges in the persistence of australian dryland mammals. | irruptive population dynamics are characteristic of a wide range of fauna in the world's arid (dryland) regions. recent evidence indicates that regional persistence of irruptive species, particularly small mammals, during the extensive dry periods of unpredictable length that occur between resource pulses in drylands occurs as a result of the presence of refuge habitats or refuge patches into which populations contract during dry (bust) periods. these small dry-period populations act as a source ... | 2017 | 26685752 |
| risky business: do native rodents use habitat and odor cues to manage predation risk in australian deserts? | in open, arid environments with limited shelter there may be strong selection on small prey species to develop behaviors that facilitate predator avoidance. here, we predicted that rodents should avoid predator odor and open habitats to reduce their probability of encounter with potential predators, and tested our predictions using a native australian desert rodent, the spinifex hopping-mouse (notomys alexis). we tested the foraging and movement responses of n. alexis to non-native predator (fox ... | 2014 | 24587396 |
| water deprivation induces appetite and alters metabolic strategy in notomys alexis: unique mechanisms for water production in the desert. | like many desert animals, the spinifex hopping mouse, notomys alexis, can maintain water balance without drinking water. the role of the kidney in producing a small volume of highly concentrated urine has been well-documented, but little is known about the physiological mechanisms underpinning the metabolic production of water to offset obligatory water loss. in notomys, we found that water deprivation (wd) induced a sustained high food intake that exceeded the pre-deprivation level, which was d ... | 2012 | 22398167 |
| the response of the natriuretic peptide system to water deprivation in the desert rodent, notomys alexis. | natriuretic peptides (nps) are regulatory molecules that cause cgmp-mediated diuresis and natriuresis in mammals. accordingly, it is interesting to consider their role in desert-adapted animals in which water is often limited. this study investigated the response of the natriuretic peptide (np) system to varying periods of water deprivation (wd) in the australian desert rodent species, notomys alexis. it was hypothesised that the expression of the np system will be down-regulated in water-depriv ... | 2006 | 16406642 |
| plasma corticosterone levels in notomys alexis, a native australian desert rodent. | | 1982 | 7129079 |
| evidence that the desert rodent, notomys alexis, exhibits a slow rate of excretion of lipophilic compounds. | | 1979 | 40733 |
| the metabolism of phenol in a desert rodent notomys alexis. | | 1978 | 30567 |
| polymorphism of the x-chromosome, y-chromosome and autosomes in the australian hopping mice, notomys alexis, n. cervinus and n. fuscus (rodentia, muridae). | all three species of notomys so far studied possess a diploid number of 48. many elements in the karyotype of n. alexis are polymorphic due to variation in heterochromatin, but the variation is most marked in autosomal pair 1, which occurs in at least four forms, the x-chromosome, which occurs in three forms, and the y-chromosome which occurs in many forms. n. cervinus is unique in the genus in possessing an entirely biarmed karyotype due mainly to the addition of heterochromatic short arms. the ... | 1977 | 872703 |
| effect of environment on ovarian activity of wild hopping mice (notomys alexis). | | 1976 | 986472 |
| locomotory energetics in a marsupial (antechinomys spenceri) and a rodent (notomys alexis). | steady state oxygen consumption was compared in a rodent notomys alexis and a marsupial antechinomys spenceri. the marsupial was found to diverge from predicted eutherian energic patterns. n. alexis appears to use energy storage as a significant part of the step cycle before becoming bipedal. aerobic scope and heat storage during running are similar in both species. | 1976 | 1278299 |
| go with your gut: digestibility and digestive function of two arid-zone australian murids, pseudomys australis and notomys alexis. | spinifex hopping-mice (notomys alexis) and plains mice (pseudomys australis) are able to successfully occupy arid zones of australia. we studied the digestive parameters and energy assimilation of captive spinifex hopping-mice and plains mice. the experiment consisted of six diets fed to the animals for periods of 12days per food type. on a dry matter basis, the plains mice consumed between 2.5 and 7.2% and the hopping-mice between 5.8 and 9.3% of their body mass in food per day. the body mass o ... | 2018 | 29703595 |