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Articoli di riviste sul tema "Dunnart"

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Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 14 febbraio 2022

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1

Haythornthwaite, Adele S. "Microhabitat use and foraging behaviour of Sminthopsis youngsoni (Marsupialia:Dasyuridae) in arid central Australia". Wildlife Research 32, n. 7 (2005): 609. http://dx.doi.org/10.1071/wr04126.

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Abstract (sommario):

In this study, fluorescent pigment tracking was used to determine the microhabitat use and foraging behaviour of a small insectivorous marsupial, Sminthopsis youngsoni (the lesser hairy-footed dunnart), in the dunefields of the Simpson Desert, south-western Queensland. In total, 25 successful trails were traced over the duration of this study, between March 1996 and April 1998. Nocturnal foraging trails were identified, then the distance travelled by the dunnart through each microhabitat type (nine in all) was measured and accumulated for each trail and compared with surrounding available microhabitats along control trails. This provided an index of selectivity of microhabitat use. Terrestrial invertebrates were collected from both actual and control trails to measure food availability. Dunnarts strongly selected open microhabitats when foraging, with the periphery of spinifex hummocks (up to 20 cm from the edge of a spinifex hummock) being favoured. Spinifex itself was avoided unless shelter was sought (i.e. immediately after release). Potential invertebrate prey captured along the actual trails travelled by dunnarts tended to occur in greater numbers and were larger than those captured along the control trails, indicating that dunnarts can accurately locate resource-rich areas in which to forage. Clearly, the foraging strategies used by this species enable it to successfully exploit patchy and unpredictable food resources, thereby ensuring its continued persistence and relative abundance in an unstable environment.

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2

Bleicher, Sonny S., e Christopher R. Dickman. "On the landscape of fear: shelters affect foraging by dunnarts (Marsupialia, Sminthopsis spp.) in a sandridge desert environment". Journal of Mammalogy 101, n. 1 (15 febbraio 2020): 281–90. http://dx.doi.org/10.1093/jmammal/gyz195.

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Abstract Disturbances such as fire reduce the structural complexity of terrestrial habitats, increasing the risk of predation for small prey species. The postfire effect of predation has especially deleterious effects in Australian habitats owing to the presence of invasive mammalian predators, the red fox (Vulpes vulpes) and feral cat (Felis catus), that rapidly exploit burned habitats. Here, we investigated whether the provision of artificial shelter could alleviate the risk of predation perceived by two species of small marsupial, the dunnarts Sminthopsis hirtipes and S. youngsoni, in open postfire habitat in the sandridge system of the Simpson Desert, central Australia. We installed artificial shelters constructed from wire mesh that allowed passage of the dunnarts but not of their predators at one site, and measured and compared the perceived risk of predation by the dunnarts there with those on a control site using optimal patch-use theory (giving-up densities, GUDs). GUDs were lower near artificial shelters than away from them, and near dune crests where dunnarts typically forage, suggesting that the shelters acted as corridors for dunnarts to move up to the crests from burrows in the swales. Foraging was lower near the crest in the control plot. Two-day foraging bouts were observed in dunnart activity, with recruitment to GUD stations occurring a day earlier in the augmented shelter plot. Despite these results, the effects of the shelters were localized and not evident at the landscape scale, with GUDs reduced also in proximity to sparse natural cover in the form of regenerating spinifex grass hummocks. Mapping dunnart habitat use using the landscape of fear (LOF) framework confirmed that animals perceived safety near shelter and risk away from it. We concluded that the LOF framework can usefully assess real-time behavioral responses of animals to management interventions in situations where demographic responses take longer to occur.

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3

Garrett, Andrew, Virginia Lannigan, Nathanael J. Yates, Jennifer Rodger e Wilhelmina Mulders. "Physiological and anatomical investigation of the auditory brainstem in the Fat-tailed dunnart (Sminthopsis crassicaudata)". PeerJ 7 (30 settembre 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 at all test frequencies, similar to other mammalian species. ABR showed the dunnart is most sensitive to higher frequencies increasing up to 47.5 kHz. Morphological observations (Nissl stain) revealed that the auditory structures thought to contribute to the first peaks of the ABR were all distinguishable in the dunnart. Structures identified include the dorsal and ventral subdivisions of the cochlear nucleus, including a cochlear nerve root nucleus as well as several distinct nuclei in the superior olivary complex, such as the medial nucleus of the trapezoid body, lateral superior olive and medial superior olive. This study is the first to show functional and anatomical aspects of the lower part of the auditory system in the Fat-tailed dunnart.

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4

Lang, Carol J., Anthony D. Postle, Sandra Orgeig, Fred Possmayer, Wolfgang Bernhard, Amiya K. Panda, Klaus D. Jürgens, William K. Milsom, Kaushik Nag e Christopher B. Daniels. "Dipalmitoylphosphatidylcholine is not the major surfactant phospholipid species in all mammals". American Journal of Physiology-Regulatory, Integrative and Comparative Physiology 289, n. 5 (novembre 2005): R1426—R1439. http://dx.doi.org/10.1152/ajpregu.00496.2004.

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Pulmonary surfactant, a complex mixture of lipids and proteins, lowers the surface tension in terminal air spaces and is crucial for lung function. Within an animal species, surfactant composition can be influenced by development, disease, respiratory rate, and/or body temperature. Here, we analyzed the composition of surfactant in three heterothermic mammals (dunnart, bat, squirrel), displaying different torpor patterns, to determine: 1) whether increases in surfactant cholesterol (Chol) and phospholipid (PL) saturation occur during long-term torpor in squirrels, as in bats and dunnarts; 2) whether surfactant proteins change during torpor; and 3) whether PL molecular species (molsp) composition is altered. In addition, we analyzed the molsp composition of a further nine mammals (including placental/marsupial and hetero-/homeothermic contrasts) to determine whether phylogeny or thermal behavior determines molsp composition in mammals. We discovered that like bats and dunnarts, surfactant Chol increases during torpor in squirrels. However, changes in PL saturation during torpor may not be universal. Torpor was accompanied by a decrease in surfactant protein A in dunnarts and squirrels, but not in bats, whereas surfactant protein B did not change in any species. Phosphatidylcholine (PC)16:0/16:0 is highly variable between mammals and is not the major PL in the wombat, dunnart, shrew, or Tasmanian devil. An inverse relationship exists between PC16:0/16:0 and two of the major fluidizing components, PC16:0/16:1 and PC16:0/14:0. The PL molsp profile of an animal species is not determined by phylogeny or thermal behavior. We conclude that there is no single PL molsp composition that functions optimally in all mammals; rather, surfactant from each animal is unique and tailored to the biology of that animal.

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5

Gardner, DK, L. Selwood e M. Lane. "Nutrient uptake and culture of Sminthopsis macroura (stripe-faced dunnart) embryos". Reproduction, Fertility and Development 8, n. 4 (1996): 685. http://dx.doi.org/10.1071/rd9960685.

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Abstract (sommario):

Glucose and pyruvate uptake by individual embryos were measured in a marsupial species (stripe-faced dunnart) and a eutherian species (mouse). At each stage of development, nutrient uptake by the dunnart embryo was around an order of magnitude greater than that of the mouse embryo. The pattern of glucose uptake by the dunnart embryo was not like that for any eutherian embryo, all of which have a low glucose uptake before the blastocyst stage. Rather, in the dunnart embryo there was a significant increase in glucose uptake after the third cleavage division, increasing from 13.6 pmol embryo h-1 at the 4-cell stage to 34.9 pmol embryo h-1 by the 8-cell stage. This increase in glucose uptake before blastocyst formation may be attributed to an increased energy demand associated with the movement of cells within the dunnart embryo. Using a new culture system, it was possible to culture 66% of dunnart embryos at the 2-4-cell stage and 80% of those at the 8-16-cell stage to the unilaminar blastocyst stage. Embryos cultured from the 2-cell to the 4-cell stage were retarded by around 12 h when they reached the blastocyst stage. Developmental retardation was also reflected in the pattern of nutrient uptake, which lagged behind that of embryos developed in vivo. The present study has shown that it is possible to culture the early marsupial embryo to the blastocyst stage in a serum-free culture system, while concomitantly quantifying embryonic nutrient requirements. Such an approach is essential for species where there is a paucity of material for study.

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6

Taggart, DA, CM Leigh, VR Steele, WG Breed, PD Temple-Smith e J. Phelan. "Effect of cooling and cryopreservation on sperm motility and morphology of several species of marsupial". Reproduction, Fertility and Development 8, n. 4 (1996): 673. http://dx.doi.org/10.1071/rd9960673.

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The effects of long-term cooling and freezing on sperm motility are described for six marsupial species: the fat-tailed dunnart, koala, brushtail possum, long-footed potoroo, northern brown bandicoot and ring-tailed possum. The effects of up to eight days of cooling at 4 degrees C on the motility of dunnart spermatozoa and the effect of cryopreservation on spermatozoa of the other species were determined. The cryoprotectant used was a Tris-citrate-fructose-egg yolk-glycerol diluent. The percentage and rating of sperm motility, and sperm structure, as determined by light microscopy, were investigated. Sperm motility in the fat-tailed dunnart was retained for up to six days when cooled to 4 degrees C, suggesting that sperm from this species have some degree of tolerance to cold shock. After this time, however, the percentage of motile spermatozoa and their motility rating declined. In all species except the fat-tailed dunnart, reinitiation of motility following cryopreservation occurred across a range of glycerol concentrations (4-17%). Cryoprotectant containing 6% and/or 8% glycerol resulted in little change of motility rating or of the percentage of live sperm after thawing, although there was some decline in the percentage of motile sperm. The unusual structural and motility characteristics of dunnart spermatozoa may account for the lack of success of sperm cryopreservation in this species.

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7

Woolley, P. A. "Diurnal resting sites of the nocturnal dasyurid marsupial Sminthopsis douglasi in Bladensburg National Park, Queensland". Australian Mammalogy 39, n. 1 (2017): 121. http://dx.doi.org/10.1071/am16013.

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An attempt has been made to determine where Julia Creek dunnarts (Sminthopsis douglasi), small nocturnal dasyurid marsupials, rest during the day under differing seasonal conditions. A short-term study was carried out in Bladensburg National Park, near the southern edge of its known distribution on the Mitchell grass downs in Queensland. Radio-collared individuals were located in cracks and holes. None of the males and females (including one with young in the pouch) were found to use the same resting site over periods of up to nine days, suggesting that they may be nomadic. Climatic factors may have affected the size of the dunnart population over the course of the study.

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8

Read, John L., Matthew J. Ward e Katherine E. Moseby. "Factors that influence trap success of sandhill dunnarts (Sminthopsis psammophila) and other small mammals in Triodia dunefields of South Australia". Australian Mammalogy 37, n. 2 (2015): 212. http://dx.doi.org/10.1071/am14020.

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Optimised detection and sensitivity of fauna-monitoring programs is essential for the adaptive management of threatened species. We describe the influence of trap type, trapping duration and timing on the detection rates of small vertebrates, in particular the nationally endangered sandhill dunnart (Sminthopsis psammophila) in its two primary populations in South Australia. A total of 118 and 155 sandhill dunnarts were captured from the Middleback and Yellabinna regions, respectively, from five trapping sessions between 2008 and 2012. Wide deep pitfall traps (225 mm diameter × 600–700 mm deep) captured significantly more adult sandhill dunnarts than shorter, narrower pitfalls (150 mm diameter × 500 mm deep) or Elliott traps. Deep pitfall traps also captured significantly more hopping mice (Notomys mitchellii) but smaller mammal species were equally trapable in deep or short pitfall traps. Capture rates declined through successive nights of trapping. Capture rates of sandhill dunnarts were greatest in one study region when the moon illumination was less than 40% compared with fuller moon phases but were not affected by moon illumination in the other study region. The results suggest that higher capture rates of sandhill dunnarts will be achieved when using wide, deep pitfall traps on dark nights during the first two nights of trapping. Trapping in summer detected more juvenile sandhill dunnarts than trapping in winter.

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9

Woinarski, J. C. Z., P. A. Woolley e S. V. Andyck. "The Distribution of The Dunnart Sminthopsis butleri." Australian Mammalogy 19, n. 1 (1996): 27. http://dx.doi.org/10.1071/am96027.

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Three records of the dunnart Sminthopsis butleri from Bathurst and Melville Islands extend the known range of this species from a single location in the Kimberley, Western Australia, to the Northern Territory. The meagre ecological information on this species is documented.

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10

ARRESE, C. A., J. RODGER, L. D. BEAZLEY e J. SHAND. "Topographies of retinal cone photoreceptors in two Australian marsupials". Visual Neuroscience 20, n. 3 (maggio 2003): 307–11. http://dx.doi.org/10.1017/s0952523803203096.

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Microspectrophotometry indicates the presence of at least three cone visual pigments in two Australian marsupials, the fat-tailed dunnart (Sminthopsis crassicaudata) and honey possum (Tarsipes rostratus). Here we have examined the distribution of cone types using antisera, JH455 and JH492, that recognize short-wavelength-sensitive (SWS) and medium-to-long-wavelength-sensitive (M/LWS) cone opsins, respectively. SWS cones were concentrated in dorso-temporal retina in the dunnart with a shallow decreasing gradient extending to the periphery (2300–1500/mm2). In the honey possum, SWS cones showed a uniform distribution (2700/mm2), except for a slight increase in a narrow peripheral band (3100/mm2). In both species, M/LWS cones dominated and their distributions were similar to those of retinal ganglion cells: a horizontal streak in the dunnart (31,000–21,000/mm2) and a shallow mid-ventral to peripheral gradient in the honey possum (37,000–26,000/mm2). A low number of cones remained unlabeled when the antisera were combined revealing further minority cone population(s). We discuss cone distributions in relation to visual capabilities and requirements of the species.

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11

Langman, C., S. Orgeig e 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, n. 2 (1 agosto 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 the removal of surfactant, and tissue compliance was determined by inflating the lung with saline. Relative to total phospholipid (PL), mouse surfactant contained proportionately less phosphatidylinositol but more cholesterol (Chol) and phosphatidylglycerol than that of the dunnart. Lung compliance was lower in dunnarts than in mice, consistent with an allometric effect. Surfactant levels, including total PL, Chol, and disaturated phospholipid (DSP) increased during torpor. The relative proportions of Chol and DSP increased after 4 and 8 h, respectively. In marked contrast to previous studies on the behavior of isolated lungs from homeothermic mammals, in our study the lung compliance of dunnarts remained unchanged throughout torpor. Tissue compliance decreased at 1 and 4 h of torpor, but this decrease was abolished by 8 h. It appears that the surfactant of the dunnarts counteracted the negative effect of tissue compliance at 1 and 4 h, an effect not present in homeothermic mammals. However, because lung compliance was maintained at 1 h of torpor in the absence of a compositional change in surfactant lipids, the changes in lipid composition observed at 4 and 8 h of torpor are thought to relate to functions of surfactant other than that of maintaining lung compliance.

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12

Cooper, S. J. B., M. Adams e A. Labrinidis. "Phylogeography of the Australian dunnart Sminthopsis crassicaudata (Marsupialia : Dasyuridae)". Australian Journal of Zoology 48, n. 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 of population structure, with significant differences in allele frequency at three loci between populations in the southeast and northwest. Together, the mtDNA and allozyme data provide evidence that S. crassicaudata consists of two Evolutionarily Significant Units (ESUs). The distribution of each ESU is not concordant with the distribution of the subspecies of S. crassicaudata, and we propose that the current subspecies classification neither reflects the major genetic subdivisions present within S. crassicaudata nor would be appropriate for any future conservation management. The level of divergence between mtDNA clades (3.4%) is indicative of cladogenesis in the Pleistocene and reflects a long-term barrier to maternal gene flow between these two populations. One potential historical barrier was Lake Bungunnia, which persisted in the Murray basin over much of the Pleistocene.

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13

Witt, Ryan R., John J. Rodger e John C. Rodger. "Breeding in the fat-tailed dunnart following ovarian suppression with the gonadotrophin-releasing hormone agonist Lucrin® Depot". Reproduction, Fertility and Development 30, n. 3 (2018): 507. http://dx.doi.org/10.1071/rd16518.

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Lucrin Depot (AbbVie), a 1-month microsphere gonadotrophin-releasing hormone (GnRH) agonist preparation, was investigated as a potential agent to synchronise cycling in the fat-tailed dunnart (Sminthopsis crassicaudata). Forty-eight randomly selected females were treated with 5 or 10 mg kg−1 Lucrin Depot (n = 24 per dose). Eighteen females per treatment had their reproductive activity scored at 4, 8, 12 and 16 weeks using two ovarian (Graafian follicle and corpus luteum status) and two reproductive tract (uterine and vaginal muscularity and vascularity) parameters that formed a reproductive activity score. Six females per treatment were paired with a male at 4 weeks. Fertility was assessed between 8 and 16 weeks by pouch check, and thereafter by dissection. The effects of the 5 and 10 mg kg−1 doses were statistically equivalent. Females showed suppression at 4–8 weeks, an increase in reproductive activity at 8–12 weeks and all were cycling normally at 16 weeks. Six pouch young were born at 12 weeks to two females treated with the 5 mg kg−1 dose. Nine embryos were recovered at 16 weeks from two females treated with the 10 mg kg−1 dose. In conclusion, Lucrin Depot can suppress breeding, and fertile mating can occur in subsequent cycles in the dunnart. There is potential for Lucrin Depot to be used as an assisted breeding tool, but it may need to be combined with ovarian stimulation treatment to achieve practical levels of synchronisation in the fat-tailed dunnart.

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14

Yousef, A., e L. Selwood. "Embryonic development in culture of the marsupials Antechinus stuartii (Macleay) and Sminthopsis macroura (Spencer) during preimplantation stages". Reproduction, Fertility and Development 5, n. 4 (1993): 445. http://dx.doi.org/10.1071/rd9930445.

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Forty-nine blastocysts from 11 brown antechinus, Antechinus stuartii, and 96 blastocysts from 17 stripe-faced dunnarts, Sminthopsis macroura, were used to develop a culture system for embryos during preimplantation stages. Blastocysts of brown antechinus were collected on Days 6-9 for unilaminar stages, Days 16-21 for bilaminar stages and Days 20 and 21 for trilaminar stages. Blastocysts of stripe-faced dunnarts were collected on Day 6 for unilaminar stages, Days 6-8 for bilaminar stages and Day 8 for trilaminar stages. Culture media were Dulbecco's modified Eagle's medium (DMEM) with 4.5% glucose and Whittingham's T6 medium both of which were supplemented with 5, 10, 12.5 and 20% fetal calf serum (FCS). Antechinus serum (5%) and bovine serum albumin (0.1%, 0.2%) were also added to some media. Human amniotic fluid (HAF) and Monomed media were also tested. Blastocysts were cultured at 35 degrees C in 5% CO2 in air. DMEM + 10% FCS and HAF supported normal development for the longest periods and over the greatest range of stages. Developmental failure of blastocysts in vitro during expansion of the unilaminar blastocyst and formation of the bilaminar blastocyst suggests that these stages may be dependent on uterine signals. When cultured in DMEM + 10% FCS, the rate of development of bilaminar and trilaminar blastocysts into organogenesis was 4 h slower than in vivo in the stripe-faced dunnart and about 6 h slower than in vivo in the brown antechinus. Embryos of stripe-faced dunnarts were cultured to within 18 h of birth.

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15

Paolino, Annalisa, Laura R. Fenlon, Peter Kozulin, Elizabeth Haines, Jonathan W. C. Lim, Linda J. Richards e Rodrigo Suárez. "Differential timing of a conserved transcriptional network underlies divergent cortical projection routes across mammalian brain evolution". Proceedings of the National Academy of Sciences 117, n. 19 (20 aprile 2020): 10554–64. http://dx.doi.org/10.1073/pnas.1922422117.

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A unique combination of transcription factor expression and projection neuron identity demarcates each layer of the cerebral cortex. During mouse and human cortical development, the transcription factor CTIP2 specifies neurons that project subcerebrally, while SATB2 specifies neuronal projections via the corpus callosum, a large axon tract connecting the two neocortical hemispheres that emerged exclusively in eutherian mammals. Marsupials comprise the sister taxon of eutherians but do not have a corpus callosum; their intercortical commissural neurons instead project via the anterior commissure, similar to egg-laying monotreme mammals. It remains unknown whether divergent transcriptional networks underlie these cortical wiring differences. Here, we combine birth-dating analysis, retrograde tracing, gene overexpression and knockdown, and axonal quantification to compare the functions of CTIP2 and SATB2 in neocortical development, between the eutherian mouse and the marsupial fat-tailed dunnart. We demonstrate a striking degree of structural and functional homology, whereby CTIP2 or SATB2 of either species is sufficient to promote a subcerebral or commissural fate, respectively. Remarkably, we reveal a substantial delay in the onset of developmental SATB2 expression in mice as compared to the equivalent stage in dunnarts, with premature SATB2 overexpression in mice to match that of dunnarts resulting in a marsupial-like projection fate via the anterior commissure. Our results suggest that small alterations in the timing of regulatory gene expression may underlie interspecies differences in neuronal projection fate specification.

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16

Geiser, F., Bronwyn M. McAllan e R. M. Brigham. "Daily torpor in a pregnant dunnart (Sminthopsis macroura Dasyuridae: Marsupialia)". Mammalian Biology 70, n. 2 (marzo 2005): 117–21. http://dx.doi.org/10.1016/j.mambio.2004.06.003.

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17

Hohnen, Rosemary, Brett P. Murphy, Jody A. Gates, Sarah Legge, Chris R. Dickman e John C. Z. Woinarski. "Detecting and protecting the threatened Kangaroo Island dunnart (Sminthopsis fuliginosusaitkeni)". Conservation Science and Practice 1, n. 1 (gennaio 2019): e4. http://dx.doi.org/10.1002/csp2.4.

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18

Dickman, C. R., F. J. Downey e M. Predavec. "The hairy-footed dunnart Sminthopsis hirtipes (Marsupialia: Dasyuridae) in Queensland." Australian Mammalogy 16, n. 1 (1993): 69. http://dx.doi.org/10.1071/am93015.

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19

Woolley, PA. "New records of the Julia Creek dunnart, Sminthopsis douglasi (Marsupialia : Dasyuridae)". Wildlife Research 19, n. 6 (1992): 779. http://dx.doi.org/10.1071/wr9920779.

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Abstract (sommario):

The Julia Creek dunnart, Sminthopsis douglasi, previously known from only four specimens, the last of which was collected in 1972, has been found alive. The number of known localities has been increased from three to eleven, and its range in the 'downs country' of north-west Queensland extended.

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20

Bennison, Kerrie, Christopher R. Dickman e Robert Godfree. "Habitat use and ecological observations of the Ooldea dunnart (Sminthopsis ooldea) at Uluru–Kata Tjuta National Park, Northern Territory". Australian Mammalogy 35, n. 2 (2013): 175. http://dx.doi.org/10.1071/am12048.

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The Ooldea dunnart (Sminthopsis ooldea) is a small (10–11 g) and poorly known dasyurid marsupial that is endemic to the central and western arid regions of Australia. Surveys carried out at Uluru–Kata Tjuta National Park, Northern Territory, from 1994 to 2010 yielded 37 captures of this elusive species, providing novel insights into its biology. Most captures were made in pitfall traps, with spring breeding confirmed by the presence of pregnant or lactating females during October and November. Animals were captured in mallee and mulga woodland and spinifex (Triodia spp.) dominated dune fields and sand plains. Capture rates were variable in most habitat types, but were relatively consistent in one site dominated by mulga (Acacia aneura). Although we found no consistent association between captures of S. ooldea and prior rainfall, fewest animals were captured in the two wettest years of the study. Ooldea dunnarts showed no clear response to fire. We suggest that mulga is a key habitat for S. ooldea, but also that the demography of this species may be shaped by biotic and/or abiotic factors that remain to be fully elucidated.

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21

Hume, I. D., C. Smith e P. A. Woolley. "Anatomy and physiology of the gastrointestinal tract of the Julia Creek dunnart, Sminthopsis douglasi (Marsupialia : Dasyuridae)". Australian Journal of Zoology 48, n. 5 (2000): 475. http://dx.doi.org/10.1071/zo00016.

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Abstract (sommario):

The gastrointestinal tract of the endangered Julia Creek dunnart (Sminthopsis douglasi), the largest member of the genus Sminthopsis, consists of a simple, unilocular stomach and an intestine of relatively uniform calibre throughout. There is no hindgut caecum, in common with other Australian carnivorous marsupials. Brunner’s glands form a collar at the proximal end of the duodenum; they consist of simple uncoiled tubes at Day 45 of pouch life but are well differentiated at Day 60, before the young take their first solid food at Day 65–70. Rate of passage of digesta was measured in nine adult Julia Creek dunnarts on diets of minced meat with either mealworm larvae or adult crickets added, using pulse doses of the solute marker Co–EDTA and large (0.5–1.0 mm) particles of plant cell walls mordanted with Cr. Transit time (time of first appearance in the faeces) of both markers (P < 0.001) and mean retention time (the average time markers are retained in the tract) of the solute marker (P < 0.05) were shorter on the diet containing mealworms than the cricket diet. These results suggest that emptying of the stomach (the main site of digesta retention in carnivores) was delayed on the cricket diet, possibly because of longer digestion times as a result of a tougher exoskeleton. Comparison with other data suggests that total tract passage times increase among dasyurids as body size increases.

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22

Lopatko, Olga V., Sandra Orgeig, Christopher B. Daniels e David Palmer. "Alterations in the surface properties of lung surfactant in the torpid marsupial Sminthopsis crassicaudata". Journal of Applied Physiology 84, n. 1 (1 gennaio 1998): 146–56. http://dx.doi.org/10.1152/jappl.1998.84.1.146.

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Abstract (sommario):

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 mice or from warm-active, 4-, or 8-h torpid dunnarts) were applied dropwise onto the subphase of a Wilhelmy-Langmuir balance at 20°C and stabilized for 20 min. After 4 h of torpor, the adsorption rate increased, and equilibrium surface tension (STeq), minimal surface tension (STmin), and the %area compression required to achieve STmin decreased, compared with the warm-active group. After 8 h of torpor, STmin decreased [from 5.2 ± 0.3 to 4.1 ± 0.3 (SE) mN/m]; %area compression required to achieve STmindecreased (from 43.4 ± 1.0 to 27.4 ± 0.8); the rate of adsorption decreased; and STeqincreased (from 26.3 ± 0.5 to 38.6 ± 1.3 mN/m). ST-area isotherms of warm-active dunnarts and mice at 20°C had a shoulder on compression and a plateau on expansion. These disappeared on the isotherms of torpid dunnarts. Samples of whole lavage (from warm-active and 8-h torpor groups) containing 100 μg phospholipid/ml were studied by using a captive-bubble surfactometer at 37°C. After 8 h of torpor, STmin increased (from 6.4 ± 0.3 to 9.1 ± 0.3 mN/m) and %area compression decreased in the 2nd (from 88.6 ± 1.7 to 82.1 ± 2.0) and 3rd (from 89.1 ± 0.8 to 84.9 ± 1.8) compression-expansion cycles, compared with warm-active dunnarts. ST-area isotherms of warm-active dunnarts at 37°C did not have a shoulder on compression. This shoulder appeared on the isotherms of torpid dunnarts. In conclusion, there is a strong correlation between in vitro changes in surface activity and in vivo changes in lipid composition of PS during torpor, although static lung compliance remained unchanged (see Langman et al. cited above). Surfactant from torpid animals is more active at 20°C and less active at 37°C than that of warm-active animals, which may represent a respiratory adaptation to low body temperatures of torpid dunnarts.

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23

RODGER, J., S. A. DUNLOP e L. D. BEAZLEY. "The ipsilateral retinal projection in the fat-tailed dunnart, Sminthopsis crassicaudata". Visual Neuroscience 15, n. 4 (aprile 1998): 677–84. http://dx.doi.org/10.1017/s095252389815407x.

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Abstract (sommario):

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% of ganglion cells projected ipsilaterally; these cells represented 20% of the total ganglion cell population. The magnitude and retinal location of the ipsilateral projection correlated with the extensive binocular field which measured 180 deg in the vertical (from 20 deg below the horizontal axis to 70 deg beyond the zenith) and 140 deg in horizontal meridian. Ipsilaterally projecting axons were restricted to the lateral third of the optic nerve along its length, sharing territory with contralaterally projecting axons.

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24

Spencer, P. B. S., T. P. Fletcher e P. A. Woolley. "Microsatellite markers from the Julia Creek dunnart, Sminthopsis douglasi (Marsupialia: Dasyuridae)". Molecular Ecology Notes 3, n. 4 (ottobre 2003): 570–71. http://dx.doi.org/10.1046/j.1471-8286.2003.00514.x.

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25

Kress, A., N. E. Merry e L. Selwood. "Oogenesis in the Marsupial Stripe-Faced Dunnart, Sminthopsis macroura". Cells Tissues Organs 168, n. 3 (2001): 188–202. http://dx.doi.org/10.1159/000047834.

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26

Hohnen, Rosemary, Brett P. Murphy, Jody A. Gates, Sarah Legge, Chris R. Dickman e John C. Z. Woinarski. "Detecting and protecting the threatened Kangaroo Island dunnart ( Sminthopsis fuliginosus aitkeni )". Conservation Science and Practice 1, n. 1 (gennaio 2019): e4. http://dx.doi.org/10.1111/csp2.4.

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27

Witt, Ryan Robert, Ian Ross Forbes, John McBain e John Cameron Rodger. "Ovarian suppression in a marsupial following single treatment with a gonadotrophin-releasing hormone agonist in microspheres". Reproduction, Fertility and Development 28, n. 12 (2016): 1964. http://dx.doi.org/10.1071/rd14423.

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Abstract (sommario):

The effect of treatment with Lucrin Depot (1 month), a microsphere gonadotrophin-releasing hormone agonist preparation, was investigated in the fat-tailed dunnart (Sminthopsis crassicaudata) as a potential strategy to synchronise cycling. The status of the ovaries (ovarian size, number and size of Graafian follicles and corpora lutea) and reproductive tract (weight, vascularity and muscularity) in twelve untreated females were assessed to establish the activity parameters for randomly selected cycling animals. Thirty-six females were treated with 1 mg kg–1 (n = 12), 10 mg kg–1 (n = 12) or 20 mg kg–1 (n = 12) Lucrin Depot. At 4, 6 and 8 weeks the reproductive tracts were assessed using the criteria developed in the untreated females. All of the females treated with 10 mg kg–1 showed suppression at 4 weeks and 25% showed return of reproductive activity at 8 weeks. A dose of 1 mg kg–1 did not appear to suppress reproductive activity and 20 mg kg–1 gave equivocal results, with evidence of both suppression and activity. The results indicate that Lucrin Depot appears to be a promising agent to regulate and potentially synchronise breeding activity in the fat-tailed dunnart.

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28

McLean, Amanda L., Steven J. B. Cooper, Melanie L. Lancaster e Susan M. Carthew. "Development of 16 microsatellite loci for the endangered sandhill dunnart (Sminthopsis psammophila)". Conservation Genetics Resources 6, n. 2 (4 dicembre 2013): 323–26. http://dx.doi.org/10.1007/s12686-013-0084-5.

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29

STRACHAN, JESSICA, LING-YU E. CHANG, MATTHEW J. WAKEFIELD, JENNIFER A. MARSHALL GRAVES e 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, n. 3 (maggio 2004): 223–29. http://dx.doi.org/10.1017/s0952523804213281.

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Abstract (sommario):

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 tammar wallaby, to design primers to amplify the S. macroura and S. crassicaudata pigment sequences by the polymerase chain reaction (PCR) using genomic DNA or retinal cDNA as a template. These primers will be useful for amplifying cone opsin coding sequences from a variety of vertebrates. Amplified products were directly sequenced to determine gene structure and coding sequences. The inferred amino acid sequences of the cone visual pigments indicated that both species have middle-wave-sensitive (MWS) pigments with a predicted absorption maximum (λmax) at 530 nm, and ultraviolet-sensitive (UVS) pigments with a predicted λmax at 360 nm. The MWS pigments of the two species differ by two, and UVS by three amino acid positions. No evidence was obtained for a third cone pigment in either species.

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30

Selwood, Lynne, e Shuliang Cui. "Establishing long-term colonies of marsupials to provide models for studying developmental mechanisms and their application to fertility control". Australian Journal of Zoology 54, n. 3 (2006): 197. http://dx.doi.org/10.1071/zo05052.

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Abstract (sommario):

To study marsupial developmental mechanisms and their application to fertility control, it is necessary to develop reliable procedures for breeding, colony maintenance, reproductive monitoring for obtaining known-age embryos and, if possible, an induced ovulation protocol. These procedures also provide means to enhance conservation of endangered species. Such procedures are examined in the stripe-faced dunnart, an excellent model for developmental analysis, and the common brush-tail possum, an agricultural and ecological pest species in New Zealand that has become a model for fertility control in marsupials. A long-term colony of the stripe-faced dunnart has been in existence for 21 years, and the procedures for its maintenance and continued survival are outlined, and include minimal reproductive contributions from wild-caught animals, and development of an appropriate timetable of development and induced-ovulation protocols. Common brushtail possum colonies are relatively frequent but have regular input from wild-caught animals. Procedures that minimise competition for prized resources and allow successful group housing of possums are outlined. For both species the available development timetables, in vitro techniques and induced ovulation protocols are essential tools for the study of developmental mechanisms and fertility control, respectively, and also have considerable implications for conservation of these and other species.

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31

Lambert, Cathy, Glen Gaikhorst e Phillip Matson. "Captive breeding of the sandhill dunnart, Sminthopsis psammophila (Marsupialia:Dasyuridae): reproduction, husbandry and growth and development". Australian Mammalogy 33, n. 1 (2011): 21. http://dx.doi.org/10.1071/am10004.

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Abstract (sommario):

Little is known of the reproductive biology of the endangered sandhill dunnart (Sminthopsis psammophila). This study demonstrates the first captive breeding of the species, defines several important reproductive parameters and documents morphological development of the young. The study confirmed field speculation that S. psammophila is a seasonal breeder and adopts a life-history strategy similar to that of other arid-zone Sminthopsinae. The average (range) interval from mating to birth is 18 (16–19) days.

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32

Zosky, G. R., e 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, n. 4 (1 giugno 2003): 293–300. http://dx.doi.org/10.1007/s00360-003-0335-y.

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33

Frigo, L., e PA Woolley. "Development of the Skeleton of the Stripe-Faced Dunnart, Sminthopsis Macroura (Marsupialia: Dasyuridae)". Australian Journal of Zoology 44, n. 2 (1996): 155. http://dx.doi.org/10.1071/zo9960155.

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Abstract (sommario):

Development of the skeleton of the stripe-faced dunnart, Sminthopsis macroura (Gould), a small carnivorous marsupial, was examined in captive-bred pouch young of known age. Skeletal tissue was differentially stained with the dyes alcian blue and alizarin red to demonstrate the presence of cartilage and bone, respectively. The skeleton of the neonate is cartilaginous and ossification centres are first apparent in the skull by Day 5 post partum. The skeleton of S. macroura is well invested with bone by Day 40 of the lactation period, when the young can relinquish the nipple. The sequence of ossification is similar to that reported for other marsupials. Comparisons are made with the eutherian pattern of ossification. This study is the first published work on the ossification of a dasyurid marsupial as shown by whole-mount staining.

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34

Old, J. M., L. Selwood e E. M. Deane. "Development of Lymphoid Tissues of the Stripe-Faced Dunnart (Sminthopsis macroura)". Cells Tissues Organs 175, n. 4 (2003): 192–201. http://dx.doi.org/10.1159/000074941.

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35

Lippolis, Giuseppe, Wendy Westman, Bronwyn McAllan e Lesley Rogers. "Lateralisation of escape responses in the stripe-faced dunnart, Sminthopsis macroura (Dasyuridae: Marsupialia)". Laterality: Asymmetries of Body, Brain and Cognition 10, n. 5 (settembre 2005): 457–70. http://dx.doi.org/10.1080/13576500442000210.

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36

Au, Phil Chi Khang, Stephen Frankenberg, Lynne Selwood e Mary Familari. "A novel marsupial pri-miRNA transcript has a putative role in gamete maintenance and defines a vertebrate miRNA cluster paralogous to the miR-15a/miR-16-1 cluster". REPRODUCTION 142, n. 4 (ottobre 2011): 539–50. http://dx.doi.org/10.1530/rep-11-0208.

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Abstract (sommario):

Successful maintenance, survival and maturation of gametes rely on bidirectional communication between the gamete and its supporting cells. Before puberty, factors from the gamete and its supporting cells are necessary for spermatogonial stem cell and primordial follicle oocyte maintenance. Following gametogenesis, gametes rely on factors and nutrients secreted by cells of the reproductive tracts, the epididymis and/or oviduct, to complete maturation. Despite extensive studies on female and male reproduction, many of the molecular mechanisms of germ cell maintenance remain relatively unknown, particularly in marsupial species. We present the first study and characterisation of a novel primary miRNA transcript, pri-miR-16c, in the marsupial, the stripe-faced dunnart. Bioinformatic analysis showed that its predicted processed miRNA – miR-16c – is present in a wide range of vertebrates, but not eutherians. In situ hybridisation revealed dunnart pri-miR-16c expression in day 4 (primordial germ cells) and day 7 (oogonia) pouch young, in primary oocytes and follicle cells of primordial follicles but then only in follicle cells of primary, secondary and antral follicles in adult ovaries. In the adult testis, pri-miR-16c transcripts were present in the cytoplasm of spermatogonial cells. The oviduct and the epididymis both showed expression, but not any other somatic tissues examined or conceptuses during early embryonic development. This pattern of expression suggests that pri-miR-16c function may be associated with gamete maintenance, possibly through mechanisms involving RNA transfer, until the zygote enters the uterus at the pronuclear stage.

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37

Tomlinson, Sean, Philip C. Withers e Shane K. Maloney. "Comparative thermoregulatory physiology of two dunnarts, Sminthopsis macroura and Sminthopsis ooldea (Marsupialia : Dasyuridae)". Australian Journal of Zoology 60, n. 1 (2012): 54. http://dx.doi.org/10.1071/zo12034.

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Abstract (sommario):

Metabolic rate and evaporative water loss (EWL) were measured to quantify the thermoregulatory patterns of two dasyurids, the stripe-faced dunnart (Sminthopsis macroura) and the Ooldea dunnart (S. ooldea) during acute exposure to Ta between 10 and 35°C. S. macroura maintained consistent Tb across the Ta range, whereas S. ooldea was more thermolabile. The metabolic rate of both species decreased from Ta = 10°C to BMR at Ta = 30°C. Mass-adjusted BMR at Ta = 30°C was the same for the two species, but there was no common regression of metabolic rate below the thermoneutral zone (TNZ). There was no significant difference between the species in allometrically corrected EWL at Ta = 30°C. Total EWL increased significantly at Ta = 10 and 35°C compared with the TNZ for S. macroura, but was consistent across the Ta range for S. ooldea. At any Ta below the TNZ, S. macroura required more energy per gram of body mass than S. ooldea, and had a higher EWL at the lower critical Ta. By being thermolabile S. ooldea reduced its energetic requirements and water loss at low Ta. The more constant thermoregulatory strategy of S. macroura may allow it to exploit a broad climatic envelope, albeit at the cost of higher energetic and water requirements. Since S. ooldea does not expend as much energy and water on thermoregulation this may be a response to the very low productivity, ‘hyperarid’ conditions of its central Australian distribution.

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38

Menkhorst, E., N. Ezard e L. Selwood. "Induction of ovulation and natural oestrous cycling in the Stripe-faced Dunnart, Sminthopsis macroura". Reproduction 133, n. 2 (febbraio 2007): 495–502. http://dx.doi.org/10.1530/rep-06-0254.

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Abstract (sommario):

Induced ovulation allows reproduction by otherwise infertile females, and is ideal for the captive breeding of endangered species where the population is aged or breeding is unsuccessful. A predictable time of ovulation after induction has not yet been achieved in polyovular marsupials. Ovulation was induced in Sminthopsis macroura using an initial injection of 20 IU equine serum gonadotrophin (eSG; Day 0), followed on Day 4 by either 20 IU eSG (n = 25) or 0.5 mg porcine luteinizing hormone (n = 26). I.p. hormone injection was given in the morning or early evening, and reproductive status was established prior to induction. Five non-cyclic animals began to cycle naturally following induction and one gave birth to a litter. The time of ovulation after the 1st injection (7.8 ± 0.9 days) was significantly shorter (P = 0.000) and less variable than the previous study, mimicked the timing of natural cycling, and both natural and induced animals ovulated in the early morning. In vitro oocyte movement through the oviduct, observed for the first time in a marsupial, occurred in pulses. We estimated one group of oocytes could travel the length of the oviduct in 40 min, but it was probably around 4 h. The entire ovulation time (including multiple ovulations) was estimated at 7.5 h. This study has achieved a predictable timing of ovulation after stimulation, and induced noncyclic animals to cycle naturally and give birth, providing a modified methodology for use in captive breeding programs of endangered dasyurid marsupial species with low fecundity.

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39

Hickford, D. "Induced ovulation, mating success and embryonic development in the stripe-faced dunnart, Sminthopsis macroura". Reproduction 122, n. 5 (1 novembre 2001): 777–83. http://dx.doi.org/10.1530/reprod/122.5.777.

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40

Polymeropoulos, E. T., M. Jastroch e P. B. Frappell. "Absence of adaptive nonshivering thermogenesis in a marsupial, the fat-tailed dunnart (Sminthopsis crassicaudata)". Journal of Comparative Physiology B 182, n. 3 (16 ottobre 2011): 393–401. http://dx.doi.org/10.1007/s00360-011-0623-x.

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41

Hope, R. M. "Genetic variation of tetrazolium oxidase in the fat-tailed dunnart Sminthopsis crassicaudata Gould (Marsupialia)". Animal Blood Groups and Biochemical Genetics 3, n. 2 (24 aprile 2009): 95–99. http://dx.doi.org/10.1111/j.1365-2052.1972.tb01237.x.

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42

Roberts, Claire T., e William G. Breed. "Embryonic-maternal cell interactions at implantation in the fat-tailed dunnart, a dasyurid marsupial". Anatomical Record 240, n. 1 (settembre 1994): 59–76. http://dx.doi.org/10.1002/ar.1092400107.

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43

Gemmell, R. T., e L. Selwood. "Structural Development in the Newborn Marsupial, the Stripe-Faced Dunnart, Sminthopsis macroura". Cells Tissues Organs 149, n. 1 (1994): 1–12. http://dx.doi.org/10.1159/000147549.

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44

Withers, Philip C., e Christine E. Cooper. "Thermal, metabolic, hygric and ventilatory physiology of the sandhill dunnart (Sminthopsis psammophila; Marsupialia, Dasyuridae)". Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology 153, n. 3 (luglio 2009): 317–23. http://dx.doi.org/10.1016/j.cbpa.2009.03.006.

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45

Riley, Joanna, Jeff M. Turpin, Matt R. K. Zeale, Brynne Jayatilaka e Gareth Jones. "Diurnal sheltering preferences and associated conservation management for the endangered sandhill dunnart, Sminthopsis psammophila". Journal of Mammalogy 102, n. 2 (1 aprile 2021): 588–602. http://dx.doi.org/10.1093/jmammal/gyab024.

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Abstract (sommario):

Abstract Dasyurids are small mammals that can conserve energy and water by using shelters that insulate against extreme conditions, prevent predation, and facilitate torpor. To quantify the diurnal sheltering requirements of a poorly known, endangered dasyurid, the sandhill dunnart, Sminthopsis psammophila, we radiotracked 40 individuals in the Western Australian Great Victoria Desert between 2015 and 2019. We assessed the effect of habitat class (broad habitat features), plot-level (the area surrounding each shelter), and shelter characteristics (e.g., daily temperature ranges), on shelter selection and sheltering habitat preferences. Two hundred and eleven diurnal shelters (mean of 5 ± 3 shelters per individual) were located on 363 shelter days (the number of days each shelter was used), within mature vegetation (mean seral age of 32 ± 12 years postfire). Burrows were used on 77% of shelter days and were typically concealed under mature spinifex, Triodia spp., with stable temperature ranges and northern aspects facing the sun. While many burrows were reused (n = 40 across 175 shelter days), spinifex hummock shelters typically were used for one shelter day and were not insulative against extreme temperatures. However, shallow scrapes within Lepidobolus deserti hummock shelters had thermal advantages and log shelters retained heat and were selected on cooler days. Sminthopsis psammophila requires long-unburned sheltering habitat with mature vegetation. Summer fires in the Great Victoria Desert can be extensive and destroy large areas of land, rendering them a key threat to the species. We conclude that the survey and conservation of S. psammophila requires attention to long-unburned, dense lower stratum swale, sand plain, and dune slope habitats, and the tendency of S. psammophila to burrow allows the species to survive within the extreme conditions of its desert environment.

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46

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, n. 8 (1 dicembre 2002): 677–84. http://dx.doi.org/10.1007/s00360-002-0295-7.

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47

Simpson, S. J., A. Y. Fong, K. J. Cummings e P. B. Frappell. "The ventilatory response to hypoxia and hypercapnia is absent in the neonatal fat-tailed dunnart". Journal of Experimental Biology 215, n. 24 (12 settembre 2012): 4242–47. http://dx.doi.org/10.1242/jeb.072413.

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48

Pires, Susana S., Julia Shand, James Bellingham, Catherine Arrese, Michael Turton, Stuart Peirson, Russell G. Foster e 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, n. 1627 (4 settembre 2007): 2791–99. http://dx.doi.org/10.1098/rspb.2007.0976.

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49

Leigh, Chris M., e Nalini Edwin. "An immunocytochemical study of the endocrine pancreas in the Australian fat-tailed dunnart (Sminthopsis crassicaudata)". Cell and Tissue Research 263, n. 1 (gennaio 1991): 195–98. http://dx.doi.org/10.1007/bf00318415.

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50

Familari, Mary, Phil Chi Khang Au, Robb U. de Iongh, Yolanda Cruz e Lynne Selwood. "Expression analysis of Cdx2 and Pou5f1 in a marsupial, the stripe-faced dunnart, during early development". Molecular Reproduction and Development 83, n. 2 (23 gennaio 2016): 108–23. http://dx.doi.org/10.1002/mrd.22597.

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