| current distribution of sarcoptic mange in wombats. | to determine the distribution and prevalence of sarcoptic mange in wombats, particularly the common wombat (vombatus ursinus). | 1998 | 9673766 |
| combination of zolazepam and tiletamine as a sedative and anaesthetic for wombats. | to assess the suitability of the combination of zolazepam and tiletamine for routine use as chemical restraint, sedative and anaesthetic in wild wombats. | 1998 | 9631707 |
| detecting population expansion and decline using microsatellites. | this article considers a demographic model where a population varies in size either linearly or exponentially. the genealogical history of microsatellite data sampled from this population can be described using coalescent theory. a method is presented whereby the posterior probability distribution of the genealogical and demographic parameters can be estimated using markov chain monte carlo simulations. the likelihood surface for the demographic parameters is complicated and its general features ... | 1999 | 10581303 |
| determination of seasonality in southern hairy-nosed wombats (lasiorhinus latifrons) by analysis of fecal androgens. | little is known about the reproductive biology of australia's critically endangered northern hairy-nosed wombat (lasiorhinus krefftii), largely due to its cryptic nature and the difficulty in accessing the small remaining population of about 70 animals. using the noninvasive technique of fecal steroid analysis, we have examined the endocrinology of the more common yet closely related southern hairy-nosed wombat (lasiorhinus latifrons). the aims of this study were to 1) develop and validate fecal ... | 2000 | 10906060 |
| pouch young removal and return to oestrus in wild southern hairy-nosed wombats (lasiorhinus latifrons). | the southern hairy-nosed wombat (lasiorhinus latifrons) is a seasonal breeding, burrowing marsupial adapted to a semi-arid environment and the closest relative of the endangered northern hairy-nosed wombat (lasiorhinus krefftii). females typically give birth to one to two young every 3 years with young weaned at 360-400 days. this study examined the occurrence of polyoestry in a wild population of southern hairy-nosed wombats, and in particular the ability of this species to produce additional o ... | 2007 | 17023125 |
| leader of the pack: faecal pellet deposition order impacts pcr amplification in wombats. | dna sourced from faeces is notoriously less reliable than that from tissue. hence, understanding whether faecal pellet quality varies within faecal piles may be important for sample selection. we hypothesized that the order in which faecal pellets are deposited may influence microsatellite polymerase chain reaction (pcr) amplification success from sampled faeces, more specifically, that first pellets deposited will have signatures of greater success than later ones. in a first test of the hypoth ... | 2009 | 21564730 |
| pulmonary adiaspiromycosis in critically endangered northern hairy-nosed wombats (lasiorhinus krefftii). | the northern hairy-nosed wombat (lasiorhinus krefftii) is critically endangered, with only 200 individuals remaining in the wild. individuals are rarely available for detailed pathological assessment and identification of disease threats to individuals is critically important to species conservation. | 2017 | 29076222 |
| hematologic and serum biochemical reference values for free-ranging northern hairy-nosed wombats. | hematologic and serum biochemistry values were determined for 31 adult (21 male and 10 female) and four subadult male northern hairy-nosed wombats (lasiorhinus krefftii) from the only existing population in epping forest national park, australia. blood samples were obtained from free-ranging northern hairy-nosed wombats during trapping for population census and health and reproductive assessment in 1999. hematologic and biochemical values were compared between adult males and adult females, and ... | 2008 | 18263822 |
| studies on the cryopreservation of common wombat (vombatus ursinus) spermatozoa. | in an attempt to develop a gamete-recovery protocol for the northern hairy nosed wombat ( lasiorhinus krefftii ), spermatozoa were removed from the cauda epididymides of four common wombats ( vombatus ursinus ) and cryopreserved following a variety of prefreeze storage conditions. spermatozoa stored for 72 h at 4 degrees c within the testicle before cryopreservation tolerated the freeze-thaw procedure remarkably well, resulting in a higher post-thaw viability (% motile p < 0.01; rate of movement ... | 2005 | 16364227 |
| in vitro maturation of oocytes from non-stimulated common wombats. | assisted reproductive techniques, such as in vitro oocyte maturation in conjunction with in vitro fertilisation, may be used as a tool to manipulate reproduction. using the common wombat as a model for the critically endangered northern hairy-nosed wombat, the present study examined whether oocyte maturation could be achieved under field conditions. at the time of collection, no oocytes were at the metaphase ii (mii) stage (0/42). after 60 h culture using the submarine incubation system, 34% of ... | 2003 | 14588188 |
| genetic marker investigation of the source and impact of predation on a highly endangered species. | in september and october 2000, the remains of a number of apparently predated northern hairy-nosed wombats (lasiorhinus krefftii) were discovered in epping forest national park, the site of the only known population of this highly endangered species. analysis of dna recovered from six carcasses and a section of intestine found nearby was carried out using microsatellite and y-specific primers. this identified seven individual wombats, the identity of three of which was inferred from a genotype d ... | 2003 | 12755893 |
| faecal progesterone metabolites and behavioural observations for the non-invasive assessment of oestrous cycles in the common wombat (vombatus ursinus) and the southern hairy-nosed wombat (lasiorhinus latifrons). | wombats belong to australia's unique marsupial species. two of the three remaining species, the common wombat (vombatus ursinus) and the southern hairy-nosed wombat (lasiorhinus latifrons) are abundant. the third species, the northern hairy-nosed wombat (lasiorhinus krefftii) has only about 115 individuals left in the wild. this study aimed to gain further insight into the basic reproductive biology of wombat species and evaluate the value of faecal progesterone metabolites and behavioural patte ... | 2002 | 12137986 |
| estimating the probability of identity among genotypes in natural populations: cautions and guidelines. | individual identification using dna fingerprinting methods is emerging as a critical tool in conservation genetics and molecular ecology. statistical methods that estimate the probability of sampling identical genotypes using theoretical equations generally assume random associations between alleles within and among loci. these calculations are probably inaccurate for many animal and plant populations due to population substructure. we evaluated the accuracy of a probability of identity (p(id)) ... | 2001 | 11251803 |
| follicular development in cryopreserved common wombat ovarian tissue xenografted to nude rats. | the northern hairy-nosed wombat (lasiorhinus krefftii) is a highly endangered marsupial species and every possible option for sustaining the species needs to be explored. one important approach may be the development of assisted reproductive technologies in the non-endangered common wombat (vombatus ursinus) and southern hairy-nosed wombat (lasiorhinus latifrons) for application in breeding the northern hairy-nosed wombat. in this study, it was examined whether cryopreserved wombat ovarian tissu ... | 2001 | 11182515 |
| highly reliable genetic identification of individual northern hairy-nosed wombats from single remotely collected hairs: a feasible censusing method. | the highly endangered northern hairy-nosed wombat (lasiorhinus krefftii) is extremely difficult to study in the wild, and its numbers correspondingly difficult to estimate. disturbance to the animals caused by trapping and radio-tracking may not only constitute an excessive risk to the population's viability, but may also yield biased data. the results of a pilot study are presented, which clearly show noninvasive genotyping to be a highly feasible and reliable alternative censusing method for l ... | 2000 | 10972763 |
| relatedness structure detected by microsatellite analysis and attempted pedigree reconstruction in an endangered marsupial, the northern hairy-nosed wombat lasiorhinus krefftii. | the northern hairy-nosed (nhn) wombat is perhaps australia's most endangered mammal. being fossorial and nocturnal as well as rare, nhn wombats are difficult to observe in the wild. hence little is known of their social biology, such as their mating and dispersal systems. a hypothesis has been advanced that adult females of the species disperse post-breeding, leaving their young to inhabit the natal burrow. female-biased dispersal is expected to result in higher relatedness amongst males in a bu ... | 1997 | 9004516 |
| a new species of oesophagostomoides (nematoda: cloacinidae) from the northern hairy-nosed wombat lasiorhinus krefftii with a key to species of the genus. | lasiorhinus krefftii, the northern hairy-nosed wombat, is a rare and endangered marsupial existing as a single population in the epping forest national park, queensland, australia. dissection of a juvenile wombat that had died from natural causes revealed the presence in the colon of a new species of oesophagostomoides schwartz, 1928, a genus found only in wombats (vombatidae, marsupialia). oesophagostomoides eppingensis n. sp. differs from the other species in the genus in the length of spicule ... | 1994 | 8064533 |
| the use of museum specimens to reconstruct the genetic variability and relationships of extinct populations. | in this review, we discuss the use of dna from museum specimens to address conservation genetic questions. we provide four examples from our previous studies of the northern hairy-nosed wombat, african wild dog, ethiopian wolf and red wolf. these species were genetically surveyed using two molecular approaches: first, analysis of short sequences in the mitochondrial genome using species-specific primers, and second, analysis of hypervariable microsatellite loci. the studies demonstrate that muse ... | 1994 | 8020615 |
| genetic variation of microsatellite loci in a bottlenecked species: the northern hairy-nosed wombat lasiorhinus krefftii. | we investigate the utility of hypervariable microsatellite loci to measure genetic variability remaining in the northern hairy-nosed wombat, one of australia's rarest mammals. this species suffered a dramatic range and population reduction over the past 120 years and now exists as a single colony of about 70 individuals at epping forest national park, central queensland. because our preliminary research on mitochondrial dna and multilocus dna fingerprints did not reveal informative variation in ... | 1994 | 7921355 |