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Articoli di riviste sul tema "Sminthopsis crassicaudata"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 29 gennaio 2023

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1

Haynes, JI, and GW Skidmore. "Hematology of the Dasyurid Marsupials Sminthopsis-Crassicaudata and Sminthopsis-Macroura." Australian Journal of Zoology 39, no. 2 (1991): 157. http://dx.doi.org/10.1071/zo9910157.

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Various haematological parameters and morphological aspects were determined for blood collected from 52 fat-tailed dunnarts, Sminthopsis crassicaudata. Compared with those of other marsupials, the erythrocyte and leukocyte counts, haemoglobin concentration and packed cell volume were low, whereas the percentage of reticulocytes (8%) was high. Differential counts revealed a sexual dimorphism for the percentage of neutrophils and lymphocytes present. Blood cell counts, including reticulocyte and differential counts, were also performed on blood from 11 animals of a closely related species, Smint

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2

Cooper, S. J. B., M. Adams, and A. Labrinidis. "Phylogeography of the Australian dunnart Sminthopsis crassicaudata (Marsupialia : Dasyuridae)." Australian Journal of Zoology 48, no. 5 (2000): 461. http://dx.doi.org/10.1071/zo00014.

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Analyses of mitochondrial DNA (mtDNA) and allozymes are used to investigate the population genetic structure, phylogeography and systematics of the fat-tailed dunnart, Sminthopsis crassicaudata. Phylogenetic analyses of control region sequences reveal the presence of two major mtDNA haplotype clades. A survey of the distribution of the two clades using diagnostic restriction endonucleases shows that one clade is restricted to southeast Australia whereas the second clade occupies the remaining central to western range of S. crassicaudata. Allozyme electrophoresis also shows concordant patterns

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3

Read, DG. "Weather and Trap Response of the Dasyurid Marsupials Sminthopsis-Crassicaudata, Planigale-Gilesi and Planigale-Tenuirostris." Wildlife Research 15, no. 2 (1988): 139. http://dx.doi.org/10.1071/wr9880139.

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Daily captures of Sminthopsis crassicaudata, Planigale gilesi and P. tenuirostris have been analysed with respect to weather variables in an arid environment. Numbers of S. crassicaudata caught in traps were not affected by changes in air pressure but more (P=0.01) P. gilesi and P. tenuirostris were trapped when the air pressure was increasing from a level below the monthly mean. Light rain increased the numbers of all species trapped (P=0.05) but moonlight had no effect. A canonical correlation analysis separated Sminthopsis from Planigale on the basis of responses to temperature and relative

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4

STRACHAN, JESSICA, LING-YU E. CHANG, MATTHEW J. WAKEFIELD, JENNIFER A. MARSHALL GRAVES, and SAMIR S. DEEB. "Cone visual pigments of the Australian marsupials, the stripe-faced and fat-tailed dunnarts: Sequence and inferred spectral properties." Visual Neuroscience 21, no. 3 (May 2004): 223–29. http://dx.doi.org/10.1017/s0952523804213281.

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Studies of color vision in marsupial mammals have been very limited. Two photoreceptor genes have been characterized from the tammar wallaby, but a third cone pigment was suggested by microspectrophotometric measurements on cone photoreceptors in two other species, including the fat-tailed dunnart, Sminthopsis crassicaudata. To determine the sequence and infer absorption maxima of the cone photoreceptor pigments of S. crassicaudata and the related stripe-faced dunnart (Sminthopsis macroura), we have used evolutionarily conserved sequences of the cone pigments of other species, including the ta

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5

Bishop, N., M. Bulbert, S. Carr, S. Kroker, and J. Millikan. "Sonographic Analysis of Vocalisations in Captive Dunnarts, Sminthopsis crassicaudata." Australian Mammalogy 18, no. 1 (1995): 99. http://dx.doi.org/10.1071/am95099.

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6

Nagy, KA, AK Lee, RW Martin, and MR Fleming. "Field Metabolic-Rate and Food Requirement of a Small Dasyurid Marsupial, Sminthopsis-Crassicaudata." Australian Journal of Zoology 36, no. 3 (1988): 293. http://dx.doi.org/10.1071/zo9880293.

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Field metabolic rates (FMRs) and rates of water flux in free-ranging fat-tailed dunnarts, Sminthopsis crassicaudata, were measured during spring (late October) using doubly labelled water. Feeding rates were estimated on the basis of water and energy fluxes. FMRs averaged 68.7 kJ d-' in adults (mean body mass= 16.6 g), and were 29.2 kJ d-' in juveniles (6.1 g). These FMRs are 6.6 times basal metabolic rate (BMR), and are much higher than the hypothetical maxima of four to five times BMR. Other dasyurid marsupials also have high FMR/BMR ratios, but so does a small petaurid marsupial. S. crassic

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7

Brooker, BM, JE Oshea, and T. Stewart. "Renal Vasculature of 2 Dasyurid Marsupials, Sminthopsis-Dolichura and S-Crassicaudata." Australian Journal of Zoology 43, no. 3 (1995): 259. http://dx.doi.org/10.1071/zo9950259.

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The renal vasculature of two dasyurid marsupials, Sminthopsis dolichura and S. crassicaudata, was examined using scanning electron microscopy of vascular corrosion casts of the kidney. Each species had a pair of unipapillary kidneys and the structural organisation of the major renal arterial vessels was similar to that of other placental mammals. The glomerulus of both species consisted of a network of dividing and anastomosing capillary loops. The glomeruli varied markedly in size, shape and complexity. Some afferent arterioles extended back towards the renal medulla, positioning the glomerul

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8

Read, DG. "Habitat Use by Sminthopsis-Crassicaudata, Planigale-Gilesi and Planigale-Tenuirostris (Marsupialia, Dasyuridae) in Semiarid New-South-Wales." Wildlife Research 14, no. 4 (1987): 385. http://dx.doi.org/10.1071/wr9870385.

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Habitat use by Sminthopsis crassicaudata, Planigale gilesi and P. tenuirostris was investigated in the arid zone of New South Wales. All species showed considerable flexibility in habitat use at all times, and abundance was poorly predicted from easily measured parameters of the habitat. However, evidence was found for separation of microhabitat among these sympatric species. Multiple regression analysis indicated that abundance of S. crassicaudata was negatively associated with height of vegetation and the depth and density of soil cracks, and that of P. gilesi was positively associated with

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9

Rodger, JC, WG Breed, and JH Bennett. "Gonadotrophin-induced oestrus and ovulation in the polyovulatory marsupial Sminthopsis crassicaudata." Reproduction, Fertility and Development 4, no. 2 (1992): 145. http://dx.doi.org/10.1071/rd9920145.

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Sminthopsis crassicaudata is a small (approximately 16 g) polyovulatory dasyurid marsupial which has the potential to become an important model species. This study examined the use of exogenous hormone treatment to manipulate the breeding of S. crassicaudata and as a means to obtain timed developmental stages for further study. Two thirds (21/32) of the females treated with 1.0 or 5.0 I.U. of pregnant mare serum gonadotrophin (PMSG) had ovulated when the contents of their reproductive tracts were examined 5 or 6 days later. Only one of eight females treated with 0.2 I.U. PMSG had ovulated in t

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10

Hope, P. J., D. Pyle, C. B. Daniels, I. Chapman, M. Horowitz, J. E. Morley, P. Trayhurn, J. Kumaratilake, and G. Wittert. "Identification of brown fat and mechanisms for energy balance in the marsupial, Sminthopsis crassicaudata." American Journal of Physiology-Regulatory, Integrative and Comparative Physiology 273, no. 1 (July 1, 1997): R161—R167. http://dx.doi.org/10.1152/ajpregu.1997.273.1.r161.

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The presence of brown adipose tissue (BAT) in marsupials is controversial because attempts to identify mitochondrial uncoupling protein (UCP) have been unsuccessful. Sminthopsis crassicaudata is a small nocturnal marsupial with an interscapular pad of adipose tissue. Electron microscopy revealed this tissue to have characteristics typical of BAT. GDP binding and UCP detection by immunoblot confirmed BAT. Expression of UCP was increased by cold exposure. When animals were placed from 28 to 15 degrees C, body temperature (Tb) decreased by 1.7 degrees C within 30 min and a further 1.0 degree C by

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11

Clements, Fiona, Perdita Hope, Chris Daniels, Ian Chapman, and Gary Wittert. "Thermogenesis in the marsupial Sminthopsis crassicaudata: effect of catecholamines and diet." Australian Journal of Zoology 46, no. 4 (1998): 381. http://dx.doi.org/10.1071/zo98022.

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The fat-tailed dunnart (Sminthopsis crassicaudata) is a small carnivorous marsupial with detectable brown adipose tissue. In order to determine whether catecholamines and food intake increase thermogenesis in this species, we measured the response of oxygen consumption (Vo2) to (i) intraperitoneal noradrenaline (0.25–4.0 mg kg-1), and (ii) food intake. The effect of nutritional status and macronutrient composition of the diet on the Vo2 response to food intake was determined by feeding both non-deprived and 24-h-food-deprived animals with either laboratory diet (1.01 Kcal g-1 (4.2 KJ g-1), 20%

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12

Vozzo, Rosalie, Gary A. Wittert, Ian M. Chapman, Robert Fraser, Perdita J. Hope, Michael Horowitz, Motaz M. Alshaher, Vijaya B. Kumar, and John E. Morley. "Evidence that nitric oxide stimulates feeding in the marsupial Sminthopsis crassicaudata." Comparative Biochemistry and Physiology Part C: Pharmacology, Toxicology and Endocrinology 123, no. 2 (June 1999): 145–51. http://dx.doi.org/10.1016/s0742-8413(99)00022-5.

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13

RODGER, J., S. A. DUNLOP, and L. D. BEAZLEY. "The ipsilateral retinal projection in the fat-tailed dunnart, Sminthopsis crassicaudata." Visual Neuroscience 15, no. 4 (April 1998): 677–84. http://dx.doi.org/10.1017/s095252389815407x.

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The population of retinal ganglion cells which project ipsilaterally in the brain was examined in the fat-tailed dunnart, Sminthopsis crassicaudata, following injection of horseradish peroxidase into one optic tract. Retinae were examined as wholemounts and optic nerves as serial sections. In addition, visual fields were measured ophthalmoscopically. Ipsilaterally projecting ganglion cells were located temporal to a line which ran vertically through the middle of the area centralis and extended medially to define a ventrolateral crescent. Temporal to the naso-temporal division, a mean of 77% o

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14

Stannard, Hayley J., Bronwyn M. McAllan, and Julie M. Old. "Dietary composition and nutritional outcomes in two marsupials,Sminthopsis macrouraandS. crassicaudata." Journal of Mammalogy 95, no. 3 (June 26, 2014): 503–15. http://dx.doi.org/10.1644/13-mamm-a-071.

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15

Breed, W. G., C. M. Leigh, J. M. Washington, and L. L. L. Soon. "Unusual nuclear structure of the spermatozoon in a marsupial,Sminthopsis crassicaudata." Molecular Reproduction and Development 37, no. 1 (January 1994): 78–86. http://dx.doi.org/10.1002/mrd.1080370111.

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16

Warnecke, Lisa, Gerhard Körtner, Chris J. Burwell, James M. Turner, and Fritz Geiser. "Short-term movement patterns and diet of small dasyurid marsupials in semiarid Australia." Australian Mammalogy 34, no. 1 (2012): 49. http://dx.doi.org/10.1071/am10052.

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Since little information is available on the spatial ecology of small arid-zone marsupials, we used radio-tracking to investigate the small-scale activity patterns of three dasyurid species in semiarid Australia. Sminthopsis crassicaudata, Planigale gilesi and S. macroura were equipped with miniature radio-transmitters to monitor choice of resting sites and daily movements. Resting sites were located within an area of 1.27 ± 0.36 ha, 0.12 ± 0.02 ha and 3.60 ± 0.95 ha, respectively and individuals returned to previously used resting sites regularly. We also analysed scat samples of S. crassicau

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17

Frey, H. "Energetic Significance of Torpor and Other Energy-Conserving Mechanisms in Free-Living Sminthopsis-Crassicaudata (Marsupialia, Dasyuridae)." Australian Journal of Zoology 39, no. 6 (1991): 689. http://dx.doi.org/10.1071/zo9910689.

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Factors influencing the use of energy-conserving mechanisms including torpor, as well as their energetic significance, were studied in free-living Sminthopsis crassicaudata at Werribee (Victoria) during winter 1981 and 1982. Possible correlations between behavioural or physiological condition of captured animals and climatic variables or food availability were investigated. Daily energy expenditure was calculated by combining time-budget analysis in the field (based on radio-tracking) with respirometric measurements of metabolic rates in captivity. The energy-conserving mechanisms used were to

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18

Godfrey, Gillian K. "Body-temperatures and torpor in Sminthopsis crassicaudata and S. larapinta (Marsupialia-Dasyuridae)." Journal of Zoology 156, no. 4 (August 20, 2009): 499–511. http://dx.doi.org/10.1111/j.1469-7998.1968.tb04367.x.

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19

Bonney, K. R., and C. D. L. Wynne. "Configural learning in two species of marsupial (Setonix brachyurus and Sminthopsis crassicaudata)." Journal of Comparative Psychology 117, no. 2 (2003): 188–99. http://dx.doi.org/10.1037/0735-7036.117.2.188.

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20

Anderson, Rebecca, and William G. Breed. "In vivo parthenogenetic activation of ovulated oocytes in a marsupial, Sminthopsis crassicaudata." Zygote 1, no. 3 (August 1993): 231–36. http://dx.doi.org/10.1017/s0967199400001519.

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SummaryThe occurrence of in vivo parthenogenesis is documented for laboratory-bred individuals of the Australian dasyurid marsupial, Sminthopsis crassicaudata. About 30% of females that had been isolated from males for a greater period of time than the length of pregnancy were found, on dissection of their uteri, to have embryos present. The embryos were surrounded by a mucoid coat and shell membrane and at least the first two cleavage divisions occurred normally. After this time, however, unequal cleavage divisions appeared to result. The parthenogenesis that takes place may be initiated as a

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21

Holloway, Joanne C., and Fritz Geiser. "Reproductive status and torpor of the marsupial Sminthopsis crassicaudata: Effect of photoperiod." Journal of Thermal Biology 21, no. 5-6 (October 1996): 373–80. http://dx.doi.org/10.1016/s0306-4565(96)00023-x.

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22

Hope, R. M., J. H. Bennett, and C. M. Chesson. "Genetic variation in natural and laboratory populations of the marsupial Sminthopsis crassicaudata." Biochemical Genetics 24, no. 7-8 (August 1986): 597–613. http://dx.doi.org/10.1007/bf00504337.

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23

Laird, Melanie K., Michaela Turancova, Bronwyn M. McAllan, Christopher R. Murphy, and Michael B. Thompson. "Uterine focal adhesion dynamics during pregnancy in a marsupial (Sminthopsis crassicaudata ; Dasyuridae)." Anatomical Record 300, no. 6 (February 7, 2017): 1150–59. http://dx.doi.org/10.1002/ar.23535.

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Laird, Melanie K., Michael B. Thompson, Christopher R. Murphy, and Bronwyn M. McAllan. "Uterine epithelial cell changes during pregnancy in a marsupial (Sminthopsis crassicaudata; Dasyuridae)." Journal of Morphology 275, no. 10 (April 16, 2014): 1081–92. http://dx.doi.org/10.1002/jmor.20282.

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Calver, MC, DR King, JS Bradley, JL Gardner, and G. Martin. "An Assessment of the Potential Target Specificity of 1080 Predator Baiting in Western-Australia." Wildlife Research 16, no. 6 (1989): 625. http://dx.doi.org/10.1071/wr9890625.

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The potential hazard of 1080 baiting for predators to 14 species of non-target mammals in the pastoral areas of Western Australia and a further six from Western Australia's Fitzgerald River National Park, was assessed by comparing projected doses of 1080 (based on consumption of non-toxic bait by captive animals in the absence of alternative food) with the approximate lethal dose of 1080 for each species. These figures suggested that individuals from 12 species were potentially at risk from crackle baits, while only individuals from Dasyurus hallucatus, Ningaui spp., Sminthopsis crassicaudata,

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Bennett, JH, WG Breed, DL Hayman, and RM Hope. "Reproductive and Genetic-Studies With a Laboratory Colony of the Dasyurid Marsupial Sminthopsis-Crassicaudata." Australian Journal of Zoology 37, no. 3 (1989): 207. http://dx.doi.org/10.1071/zo9890207.

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The fat-tailed dunnart, Sminthopsis crassicaudata, is a small insectivorous dasyurid (adult weight about 16 g) widely distributed in Australia. A laboratory colony of this marsupial, which has been built up over many years, is providing material for studies of dasyurid reproductive biology and genetics. In the area of reproductive biology, we have found a marked disparity in the age of maturation between the two sexes, and we are currently studying certain aspects of spermatogenesis, sperm transport, fertilisation and early embryonic development. Genetical studies have revealed large differenc

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27

Czarny, N. A., and J. C. Rodger. "The spermatozoa of the dasyurid marsupial, Sminthopsis crassicaudata, are highly susceptible to cold shock." Reproduction, Fertility and Development 22, no. 3 (2010): 580. http://dx.doi.org/10.1071/rd09119.

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Since the late 1970s research has suggested that marsupial spermatozoa did not suffer cold shock. We have re-examined cold shock to investigate problems with freezing of spermatozoa from a dasyurid marsupial, the fat-tailed dunnart (Sminthopsis crassicaudata). Epididymal spermatozoa were rapidly cooled to 0.5°C in a pre-cooled tube held in an iced-water slurry. Upon re-warming all spermatozoa were immotile and the addition of 10% or 20% egg yolk to the sperm medium had no beneficial effect. Spermatozoa that were rapidly cooled to 4°C maintained only 2% motility when re-warmed but the addition

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Bonney, Kathryn R., and C. D. L. Wynne. "Visual discrimination learning and strategy behavior in the fat-tailed dunnarts ( Sminthopsis crassicaudata )." Journal of Comparative Psychology 116, no. 1 (2002): 55–62. http://dx.doi.org/10.1037/0735-7036.116.1.55.

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Hope, P. "Decreased Glucose Utilisation Does Not Increase Food Intake in the Marsupial Sminthopsis crassicaudata." Physiology & Behavior 63, no. 1 (December 31, 1997): 31–34. http://dx.doi.org/10.1016/s0031-9384(97)00383-1.

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Langman, C., S. Orgeig, and C. B. Daniels. "Alterations in composition and function of surfactant associated with torpor in Sminthopsis crassicaudata." American Journal of Physiology-Regulatory, Integrative and Comparative Physiology 271, no. 2 (August 1, 1996): R437—R445. http://dx.doi.org/10.1152/ajpregu.1996.271.2.r437.

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Cold profoundly influences lung compliance in homeothermic mammals. Much of this effect has traditionally been attributed to the inactivation of the surfactant system. However, many mammals undergo large fluctuations in body temperature (heterothermic mammals). Here, the surfactant lipid composition and lung compliance of warm-active dunnarts (Sminthopsis crassicaudata) and the homeothermic mouse (Mus musculus) [body temperature (Tb) = 35-37 degrees C] were compared with those of dunnarts killed after 1,4 or 8 h of torpor (Tb < 20 degrees C). Lung compliance was measured before and after th

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Holloway, J. C., and F. Geiser. "Influence of torpor on daily energy expenditure of the dasyurid marsupial Sminthopsis crassicaudata." Comparative Biochemistry and Physiology Part A: Physiology 112, no. 1 (September 1995): 59–66. http://dx.doi.org/10.1016/0300-9629(95)00089-p.

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Zosky, G. R., and J. E. O'Shea. "The cardiac innervation of a marsupial heterotherm, the fat-tailed dunnart (Sminthopsis crassicaudata)." Journal of Comparative Physiology B: Biochemical, Systemic, and Environmental Physiology 173, no. 4 (June 1, 2003): 293–300. http://dx.doi.org/10.1007/s00360-003-0335-y.

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Hope, P. J., G. A. Wittert, M. Horowitz, and J. E. Morley. "Feeding patterns of S. crassicaudata (Marsupialia:Dasyuridae): role of gender, photoperiod, and fat stores." American Journal of Physiology-Regulatory, Integrative and Comparative Physiology 272, no. 1 (January 1, 1997): R78—R83. http://dx.doi.org/10.1152/ajpregu.1997.272.1.r78.

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Little is known about feeding regulation in marsupials. Sminthopsis crassicaudata is a small nocturnal marsupial, whose tail contains approximately 25% total body fat. We have characterized the effect of gender, photoperiod, food deprivation, and tail removal (lipectomy) on food intake in S. crassicaudata. Males and females maintained in captivity on long-day (LD, 16:8-h light-dark cycle) and short-day (SD, 9:15-h light-dark cycle) light regimens were studied. Feeding patterns under LD and SD photoperiods were initially measured under conditions of ad libitum food supply and then in groups of

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Hope, Perdita J., Ian Chapman, John E. Morley, Michael Horowitz, and Gary A. Wittert. "Effect of diet on the response to leptin in the marsupialSminthopsis crassicaudata." American Journal of Physiology-Regulatory, Integrative and Comparative Physiology 276, no. 2 (February 1, 1999): R373—R381. http://dx.doi.org/10.1152/ajpregu.1999.276.2.r373.

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The aim of this study was to determine in the marsupial Sminthopsis crassicaudata 1) the effect of leptin on food intake, body fat stores, and metabolism and 2) whether leptin can prevent a diet-induced increase in adiposity. In response to 21 days of feeding with mealworms (2.99 kcal/g, 30% fat), body weight ( P < 0.0001) and tail width ( P < 0.0001) increased, compared with control animals fed with laboratory diet (1.01 kcal/g, 20% fat). Subsequently, S. crassicaudata were randomly allocated to receive either laboratory diet or a choice between laboratory diet and mealworms. For 13 day

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Roberts, CT, and WG Breed. "Variation in ultrastructure of mucoid coat and shell membrane secretion of a dasyurid marsupial." Reproduction, Fertility and Development 8, no. 4 (1996): 645. http://dx.doi.org/10.1071/rd9960645.

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In the dasyurid marsupial Sminthopsis crassicaudata, the shell membrane of cleaving embryos has a compact granular structure but becomes fibrous around blastocysts. Polyclonal antibodies were raised against the extracellular coats, mucoid and shell membrane, of oocytes and early embryos. Immunogold cytochemistry resulted in labelling of secretory granules in the epithelia of both the ampulla and isthmus of the oviduct, although the secretory granules of these two regions differed in their ultrastructural appearance. Those in the ampulla were heterogeneous with areas of varying electron density

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Czarny, N. A., and J. C. Rodger. "143. THE FIRST EVIDENCE OF HIGH SUSCEPTIBILITY TO COLD SHOCK BY THE SPERMATOZOA OF A MARSUPIAL, THE FAT TAILED DUNNART (SMINTHOPSIS CRASSICAUDATA)." Reproduction, Fertility and Development 21, no. 9 (2009): 61. http://dx.doi.org/10.1071/srb09abs143.

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Carnivorous marsupials are native Australian predators including the highly threatened northern quoll (Dasyurus hallucatus) and Tasmanian devil (Sarcophilus harrisii). These species are currently actively managed in captive populations but assisted reproductive techniques such as gamete banking may also contribute to their conservation. Previous studies on a model dasyurid, the fat tailed dunnart (Sminthopsis crassicaudata), have found that spermatozoa do not survive freezing and thawing using a variety of freezing protocols and cryoprotectants. We have re-examined cold shock to investigate pr

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Lopatko, Olga V., Sandra Orgeig, Christopher B. Daniels, and David Palmer. "Alterations in the surface properties of lung surfactant in the torpid marsupial Sminthopsis crassicaudata." Journal of Applied Physiology 84, no. 1 (January 1, 1998): 146–56. http://dx.doi.org/10.1152/jappl.1998.84.1.146.

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Lopatko, Olga V., Sandra Orgeig, Christopher B. Daniels, and David Palmer. Alterations in the surface properties of lung surfactant in the torpid marsupial Sminthopsis crassicaudata. J. Appl. Physiol. 84(1): 146–156, 1998.—Torpor changes the composition of pulmonary surfactant (PS) in the dunnart Sminthopsis crassicaudata [C. Langman, S. Orgeig, and C. B. Daniels. Am. J. Physiol. 271 ( Regulatory Integrative Comp. Physiol. 40): R437–R445, 1996]. Here we investigated the surface activity of PS in vitro. Five micrograms of phospholipid per centimeter squared surface area of whole lavage (from mi

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Hope, R. M. "Genetic variation of tetrazolium oxidase in the fat-tailed dunnart Sminthopsis crassicaudata Gould (Marsupialia)." Animal Blood Groups and Biochemical Genetics 3, no. 2 (April 24, 2009): 95–99. http://dx.doi.org/10.1111/j.1365-2052.1972.tb01237.x.

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39

Lopatko, Olga V., Sandra Orgeig, David Palmer, Samuel Schürch, and Christopher B. Daniels. "Alterations in pulmonary surfactant after rapid arousal from torpor in the marsupial Sminthopsis crassicaudata." Journal of Applied Physiology 86, no. 6 (June 1, 1999): 1959–70. http://dx.doi.org/10.1152/jappl.1999.86.6.1959.

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Abstract (sommario):

Torpor in the dunnart, Sminthopsis crassicaudata, alters surfactant lipid composition and surface activity. Here we investigated changes in surfactant composition and surface activity over 1 h after rapid arousal from torpor (15–30°C at 1°C/min). We measured total phospholipid (PL), disaturated PL (DSP), and cholesterol (Chol) content of surfactant lavage and surface activity (measured at both 15 and 37°C in the captive bubble surfactometer). Immediately after arousal, Chol decreased (from 4.1 ± 0.05 to 2.8 ± 0.3 mg/g dry lung) and reached warm-active levels by 60 min after arousal. The Chol/D

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40

Holland, Robert A. B., Susan J. Calvert, Rory M. Hope, and Clive M. Chesson. "Blood O2 transport in newborn and adult of a very small marsupial (Sminthopsis crassicaudata)." Respiration Physiology 98, no. 1 (September 1994): 69–81. http://dx.doi.org/10.1016/0034-5687(94)90037-x.

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41

Polymeropoulos, E. T., M. Jastroch, and P. B. Frappell. "Absence of adaptive nonshivering thermogenesis in a marsupial, the fat-tailed dunnart (Sminthopsis crassicaudata)." Journal of Comparative Physiology B 182, no. 3 (October 16, 2011): 393–401. http://dx.doi.org/10.1007/s00360-011-0623-x.

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42

Hope, RM, and GK Godfrey. "Genetically-Determined Variation of Pelage Color and Reflectance in Natural and Laboratory Populations of the Marsupial Sminthopsis-Crassicaudata (Gould)." Australian Journal of Zoology 36, no. 4 (1988): 441. http://dx.doi.org/10.1071/zo9880441.

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Abstract (sommario):

A study of variation in dorsal pelage colour and reflectance of the dasyurid marsupial, Sminthopsis crassicaudata, has been based on animals captured from widely scattered areas in south-central Australia, and on a laboratory colony of this species. Measurements on the degree of resemblance between relatives gave heritability estimates of pelage reflectance close to the theoretical upper limit of unity. Measurements on the reflectance of animals captured from the wild revealed a geographical cline, with reflectance decreasing (animals becoming darker) with increasing southerly latitude. The hi

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43

Jastroch, M., K. W. Withers, S. Taudien, P. B. Frappell, M. Helwig, T. Fromme, V. Hirschberg, et al. "Marsupial uncoupling protein 1 sheds light on the evolution of mammalian nonshivering thermogenesis." Physiological Genomics 32, no. 2 (January 2008): 161–69. http://dx.doi.org/10.1152/physiolgenomics.00183.2007.

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Abstract (sommario):

Brown adipose tissue expressing uncoupling protein 1 (UCP1) is responsible for adaptive nonshivering thermogenesis giving eutherian mammals crucial advantage to survive the cold. The emergence of this thermogenic organ during mammalian evolution remained unknown as the identification of UCP1 in marsupials failed so far. Here, we unequivocally identify the marsupial UCP1 ortholog in a genomic library of Monodelphis domestica. In South American and Australian marsupials, UCP1 is exclusively expressed in distinct adipose tissue sites and appears to be recruited by cold exposure in the smallest sp

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44

Garrett, Andrew, Virginia Lannigan, Nathanael J. Yates, Jennifer Rodger, and Wilhelmina Mulders. "Physiological and anatomical investigation of the auditory brainstem in the Fat-tailed dunnart (Sminthopsis crassicaudata)." PeerJ 7 (September 30, 2019): e7773. http://dx.doi.org/10.7717/peerj.7773.

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Abstract (sommario):

The fat-tailed dunnart (Sminthopsis crassicaudata) is a small (10–20 g) native marsupial endemic to the south west of Western Australia. Currently little is known about the auditory capabilities of the dunnart, and of marsupials in general. Consequently, this study sought to investigate several electrophysiological and anatomical properties of the dunnart auditory system. Auditory brainstem responses (ABR) were recorded to brief (5 ms) tone pips at a range of frequencies (4–47.5 kHz) and intensities to determine auditory brainstem thresholds. The dunnart ABR displayed multiple distinct peaks a

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45

Cooper, S. J., and R. M. Hope. "Evolution and expression of a beta-like globin gene of the Australian marsupial Sminthopsis crassicaudata." Proceedings of the National Academy of Sciences 90, no. 24 (December 15, 1993): 11777–81. http://dx.doi.org/10.1073/pnas.90.24.11777.

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46

Ewer, R. F. "A Preliminary Survey of the Behaviour in Captivity of the Dasyurid Marsupial, Sminthopsis crassicaudata (Gould)." Zeitschrift für Tierpsychologie 25, no. 3 (April 26, 2010): 319–65. http://dx.doi.org/10.1111/j.1439-0310.1968.tb00019.x.

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47

Pires, Susana S., Julia Shand, James Bellingham, Catherine Arrese, Michael Turton, Stuart Peirson, Russell G. Foster, and Stephanie Halford. "Isolation and characterization of melanopsin ( Opn4 ) from the Australian marsupial Sminthopsis crassicaudata (fat-tailed dunnart)." Proceedings of the Royal Society B: Biological Sciences 274, no. 1627 (September 4, 2007): 2791–99. http://dx.doi.org/10.1098/rspb.2007.0976.

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48

Leigh, Chris M., and Nalini Edwin. "An immunocytochemical study of the endocrine pancreas in the Australian fat-tailed dunnart (Sminthopsis crassicaudata)." Cell and Tissue Research 263, no. 1 (January 1991): 195–98. http://dx.doi.org/10.1007/bf00318415.

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49

G., Zosky. "The parasympathetic nervous system: its role during torpor in the fat-tailed dunnart ( Sminthopsis crassicaudata )." Journal of Comparative Physiology B: Biochemical, Systemic, and Environmental Physiology 172, no. 8 (December 1, 2002): 677–84. http://dx.doi.org/10.1007/s00360-002-0295-7.

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50

Wittert, Gary A., Helen Turnbull, Perdita Hope, John E. Morley, and Michael Horowitz. "Leptin prevents obesity induced by a high-fat diet after diet-induced weight loss in the marsupial S. crassicaudata." American Journal of Physiology-Regulatory, Integrative and Comparative Physiology 286, no. 4 (April 2004): R734—R739. http://dx.doi.org/10.1152/ajpregu.00240.2003.

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Abstract (sommario):

The aims of this study were to determine in the marsupial Sminthopsis crassicaudata, the effects of leptin on food intake, body weight, tail width (a reflection of fat stores), and leptin mRNA, after caloric restriction followed by refeeding ad libitum with either a standard or high-fat preferred diet. S. crassicaudata ( n = 32), were fed standard laboratory diet (LabD; 1.01 kcal/g, 20% fat) ad libitum for 3 days. On days 4-10, animals received LabD at 75% of basal intake and then ( days 11-25) were fed either LabD or a choice of LabD and mealworms (MW; 2.99 kcal/g, 30% fat); during this time,

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