Publications
Title | Abstract | Year(sorted ascending) Filter | PMID Filter |
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substance p-immunoreactive neurons in the retina of two lizards. | the dendritic morphology and retinal distribution of substance p(sp)-immunoreactive neurons was determined in two australian lizard species pogona vitticeps and varanus gouldii, by using immunohistochemistry on retinal wholemounts and sectioned materials. in both species, two classes of sp-immunoreactive neurons were described in the inner nuclear layer (inl) and classified as amacrine cells (types a and b). type a amacrine cells had large somata and wide-field, bistratified dendrites branching ... | 1991 | 1720010 |
neuropeptide y-immunoreactive neurons in the retina of two australian lizards. | wholemounts and sectioned retina from adults of two lizard species, pogona vitticeps and varanus gouldii, were studied by immunohistochemistry for neuropeptide y (npy)-like immunoreactivity. in both species the morphology of two classes of amacrine cells (types a and b) were described. cell somata were located mostly in the inner nuclear layer (inl) but were occasionally displaced into the ganglion cell layer (gcl). in the pogona retina, type a cells had large somata and dendritic arbor that bra ... | 1994 | 8068405 |
a description of isospora amphiboluri (apicomplexa: eimeriidae) from the inland bearded dragon, pogona vitticeps (sauria: agamidae). | fecal samples from 50 captive inland bearded dragons, pogona vitticeps (ahl, 1926), bred in california, were examined for coccidian parasites. sixteen (32%) of the lizards were found to be passing oocysts of isospora amphiboluri cannon, 1967, previously described from bearded dragons pogona barbata (cuvier, 1829) from australia. sporulated oocytes were spherical to subspherical, 25.3 x 25.1 (23-26 x 23-26) microns, with a shape index (length/width) of 1.0 (1.0-1.1). a micropyle, oocyst residuum, ... | 1995 | 7707208 |
functional significance and control of release of pulmonary surfactant in the lizard lung. | the amount of pulmonary surfactant in the lungs of the bearded dragon (pogona vitticeps) increases with increasing body temperature. this increase coincides with a decrease in lung compliance. the relationship between surfactant and lung compliance and the principal stimuli for surfactant release and composition (temperature, ventilatory pattern, and autonomic neurotransmitters) were investigated. we chose to investigate ventilatory pattern (which causes mechanical deformation of the type ii cel ... | 1995 | 7485601 |
coinfection of a bearded dragon, pogona vitticeps, with adenovirus- and dependovirus-like viruses. | four neonate bearded dragons, pogona vitticeps, from two collections became ill and died. multiple tissues were collected and processed for light microscopy. in hematoxylin and eosin-stained sections of liver of one lizard, numerous basophilic intranuclear inclusions were observed. in three lizards, intranuclear inclusions were primarily seen within enterocytes in the small intestine. a portion of paraffin-embedded liver of one lizard and small intestine of a second lizard were removed, deparaff ... | 1996 | 8740710 |
factors affecting opening and filling pressures in the lungs of the lizard pogona vitticeps. | we have previously reported that levels of pulmonary surfactant in the lungs of the lizard pogona vitticeps increase with increasing body temperature. static lung compliance decreases with increasing body temperature, and is only marginally affected by the presence of surfactant. here, we examined the effects of surfactant, temperature, ventilatory pattern and autonomic neurotransmitters on opening and filling pressures. isolated lungs were ventilated at either 18 or 37 degrees c at low, interme ... | 1996 | 8833552 |
surfactant regulates pulmonary fluid balance in reptiles. | reptilian lungs are potentially susceptible to fluid disturbances because they have very high pulmonary fluid filtration rates. in mammals, pulmonary surfactant protects the lung from developing alveolar edema. reptiles also have an order of magnitude more surfactant per square centimeter of respiratory surface area compared with mammals. we investigated the role of reptilian surfactant 1) in the entry of vascularly derived fluid into the alveolar space of the isolated perfused lizard (pogona vi ... | 1997 | 9435656 |
systemic microsporidiosis in inland bearded dragons (pogona vitticeps). | one laboratory-hatched and -reared inland bearded dragon (pogona vitticeps) (no. 1) and two privately owned inland bearded dragons (nos. 2 and 3) died, showing nonspecific signs of illness. light microscopic examination of hematoxylin and eosin-stained tissue sections from lizard no. 1 revealed severe hepatic necrosis with clusters of light basophilic intracytoplasmic microorganisms packing and distending hepatocytes and free in areas of necrosis. similar microorganisms were within cytoplasmic v ... | 1998 | 9809606 |
control of pulmonary surfactant secretion from type ii pneumocytes isolated from the lizard pogona vitticeps. | pulmonary surfactant, a mixture consisting of lipids and proteins and secreted by type ii cells, functions to reduce the surface tension of the fluid lining of the lung, and thereby decreases the work of breathing. in mammals, surfactant secretion appears to be influenced primarily by the sympathetic nervous system and changes in ventilatory pattern. the parasympathetic nervous system is not believed to affect surfactant secretion in mammals. very little is known about the factors that control s ... | 1999 | 10600917 |
development of the pulmonary surfactant system in two oviparous vertebrates. | in birds and oviparous reptiles, hatching is often a lengthy and exhausting process, which commences with pipping followed by lung clearance and pulmonary ventilation. we examined the composition of pulmonary surfactant in the developing lungs of the chicken, gallus gallus, and of the bearded dragon, pogona vitticeps. lung tissue was collected from chicken embryos at days 14, 16, 18 (prepipped), and 20 (postpipped) of incubation and from 1 day and 3 wk posthatch and adult animals. in chickens, s ... | 2000 | 10666151 |
antioxidant enzymes in the developing lungs of egg-laying and metamorphosing vertebrates. | the activities of the pulmonary antioxidant enzymes (aoe), superoxide dismutase (sod), glutathione peroxidase (gpx) and catalase, increase in the final 10-20 % of gestation in the mammalian lung, to protect the lung from attack by increasing levels of reactive oxygen species at birth. whether the increase occurs as a normal 'preparation for birth', i.e. by a genetically determined mechanism, or in response to increased levels of oxygen, i.e. in response to the environment, is not completely unde ... | 2001 | 11807115 |
occurrence of an invertebrate iridescent-like virus (iridoviridae) in reptiles. | viral isolates were obtained in 1998, 1999 and 2000 from the lung, liver and intestine of two bearded dragons (pogona vitticeps) and a chameleon (chamaeleo quadricornis) and from the skin of a frill-necked lizard (chamydosaurus kingii) by using viper heart cells (vh2) at 28 degrees c. electron microscopic examination of infected vh2 cells revealed the assembly of icosahedral iridovirus-like particles measuring 139 nm (side to side) and 151 nm (apex to apex). negatively stained virus particles ha ... | 2001 | 11765804 |
an outbreak of adenoviral infection in inland bearded dragons (pogona vitticeps) coinfected with dependovirus and coccidial protozoa (isospora sp.). | thirty of 200 (15%) hatchling inland bearded dragons were found dead after a short period (48 hours) of weakness and lethargy. the most common clinical signs were head tilt and circling. six bearded dragons with neurological signs were euthanized, and postmortem examination revealed no gross abnormalities. microscopically, severe, randomly distributed hepatocellular necrosis with large basophilic intranuclear inclusion bodies in numerous hepatocytes was noted. small-intestinal enterocytes contai ... | 2002 | 12152815 |
regulation of pulmonary surfactant secretion in the developing lizard, pogona vitticeps. | pulmonary surfactant is a mixture of lipids and proteins that is secreted by alveolar type ii cells in the lungs of all air-breathing vertebrates. pulmonary surfactant functions to reduce the surface tension in the lungs and, therefore, reduce the work of breathing. in mammals, the embryonic maturation of the surfactant system is controlled by a host of factors, including glucocorticoids, thyroid hormones and autonomic neurotransmitters. we have used a co-culture system of embryonic type ii cell ... | 2002 | 12443912 |
supercontracting muscle: producing tension over extreme muscle lengths. | muscle mechanics dictates a trade-off between the ability of a muscle to generate isometric force and its length. this intrinsic trade-off is the result of the need for overlap between thick and thin filaments upon extension of the sarcomere and of the limitations imposed by the physical interference between the thin filaments and the thick filaments with the z-disk upon contraction. however, previously published data indicate that chameleons are able to produce a nearly constant tongue retracti ... | 2002 | 12110650 |
prostaglandins are important in thermoregulation of a reptile (pogona vitticeps). | the effectiveness of behavioural thermoregulation in reptiles is amplified by cardiovascular responses, particularly by differential rates of heart beat in response to heating and cooling (heart-rate hysteresis). heart-rate hysteresis is ecologically important in most lineages of ectothermic reptile, and we demonstrate that heart-rate hysteresis in the lizard pogona vitticeps is mediated by prostaglandins. in a control treatment (administration of saline), heart rates during heating were signifi ... | 2003 | 12952634 |
[evaluation of a number of commercial diets for iguana (iguana iguana), bearded dragons (pogona vitticeps), and land and marsh tortoises]. | fifteen commercially available, complete diets for iguanas, bearded dragons, and chelonians were analysed and compared with the ideal composition of a diet formulated by the authors. the clinical risks of feeding with a too high or a too low content of specific nutrients are described. nutrient deficiencies are not expected if these diets are the sole source of nutrients. however, one diet had only a marginally adequate protein content, five diets for herbivorous reptiles contained a too low per ... | 2003 | 14535069 |
effects of sublethal fenitrothion ingestion on cholinesterase inhibition, standard metabolism, thermal preference, and prey-capture ability in the australian central bearded dragon (pogona vitticeps, agamidae). | the central bearded dragon (pogona vitticeps) is a medium-sized lizard that is common in semiarid habitats in australia and that potentially is at risk of fenitrothion exposure from use of the chemical in plague locust control. we examined the effects of single sublethal doses of this organophosphate (op; low dose = 2.0 mg/kg; high dose = 20 mg/kg; control = vehicle alone) on lizard thermal preference, standard metabolic rate, and prey-capture ability. we also measured activities of plasma total ... | 2004 | 14768874 |
the dragon lizard pogona vitticeps has zz/zw micro-sex chromosomes. | the bearded dragon, pogona vitticeps (agamidae: reptilia) is an agamid lizard endemic to australia. like crocodilians and many turtles, temperature-dependent sex determination (tsd) is common in agamid lizards, although many species have genotypic sex determination (gsd). p. vitticeps is reported to have gsd, but no detectable sex chromosomes. here we used molecular cytogenetic and differential banding techniques to reveal sex chromosomes in this species. comparative genomic hybridization (cgh), ... | 2005 | 16331408 |
multicentric benign peripheral nerve sheath tumors in two related bearded dragons, pogona vitticeps. | multiple subcutaneous masses from two sibling bearded dragons were removed. nodules were well demarcated, restricted to the subcutis, and soft, white to yellow, resembling adipose tissue. histologically, the masses were composed of short interlacing streams and bundles of spindle cells, with regions of vague nuclear palisading. two of the tumors contained a subpopulation of polygonal cells with abundant periodic acid-schiff (pas)-positive cytoplasmic granules. neoplastic cells were immunohistoch ... | 2005 | 16006613 |
mitochondrial genome of pogona vitticepes (reptilia; agamidae): control region duplication and the origin of australasian agamids. | the complete mitochondrial dna sequence for an australian agamid pogona vitticepes was determined. twenty-two trna genes, two rrna genes, thirteen protein-coding genes, and two control regions were identified in this mitochondrial genome. the second control region was inserted between nadh dehydrogenase subunits 5 and 6 genes. the duplication of the control region was found in all australasian agamids examined and was not found in other asian or african taxa. the two control regions had nearly i ... | 2005 | 15716001 |
sodium pump molecular activity and membrane lipid composition in two disparate ectotherms, and comparison with endotherms. | previous research has shown that the lower sodium pump molecular activity observed in tissues of ectotherms compared to endotherms, is largely related to the lower levels of polyunsaturates and higher levels of monounsaturates found in the cell membranes of ectotherms. marine-based ectotherms, however, have very polyunsaturated membranes, and in the current study, we measured molecular activity and membrane lipid composition in tissues of two disparate ectothermic species, the octopus (octopus v ... | 2005 | 15726386 |
hypoxia progressively lowers thermal gaping thresholds in bearded dragons, pogona vitticeps. | most animals, including reptiles, lower body temperature (tb) under hypoxic conditions. numerous physiological and behavioural traits significant to the regulation of tb are altered by hypoxia in ways that suggest an orchestrated adjustment of tb at a new and lower regulated level. we examined this matter in bearded dragons, pogona vitticeps, a species of reptile that naturally exhibits open mouth gaping at high temperatures, presumably in order to promote evaporation and thus prevent or avoid f ... | 2005 | 16109893 |
why are some mitochondria more powerful than others: insights from comparisons of muscle mitochondria from three terrestrial vertebrates. | we studied the molecular composition of muscle mitochondria to evaluate whether the contents of cytochromes or adenine nucleotide translocase (ant) or phospholipid acyl compositions reflect differences in mitochondrial oxidative capacities. we isolated mitochondria from three vertebrates of similar size and preferred temperature, the rat (rattus norvegicus), the cane toad (bufo marinus) and the bearded dragon lizard (pogona vitticeps). mitochondrial oxidative capacities were higher in rats and c ... | 2005 | 16085440 |
prey capture kinematics of ant-eating lizards. | while morphological and behavioral feeding specializations are obvious in many vertebrate groups, among lizards there appear to be few dietary specialists. by comparing the prey capture kinematics and overall feeding behavior in two highly specialized ant-eating lizards (moloch horridus and phrynosoma platyrhinos) with those of two closely related dietary generalists (pogona vitticeps and uma notata), we investigate whether dietary specialization has been accompanied by changes in the function a ... | 2005 | 15601883 |
how might you compare mitochondria from different tissues and different species? | mitochondria were isolated from the liver, kidney and mixed hindlimb skeletal muscle of three vertebrate species; the laboratory rat rattus norvegicus, the bearded dragon lizard pogona vitticeps, and the cane toad bufo marinus. these vertebrate species are approximately the same body mass and have similar body temperatures. the content of cytochromes b, c, c1, and a were measured in these isolated mitochondria by oxidised-reduced difference spectra. adenine nucleotide translocase (ant) was measu ... | 2006 | 16408229 |
granulomatous osteomyelitis associated with atypical mycobacteriosis in a bearded dragon (pogona vitticeps). | the zoonotic potential of mycobacterium spp has been well documented and has been implicated in cutaneous and subcutaneous nodular disease in humans. treatment of the infected reptiles is often not recommended, because of the zoonotic potential. moreover, the often-advanced nature of the disease when diagnosed, the lengthy and expensive treatment regimens, and lack of a reported successful treatment regimen for reptiles usually warrant euthanasia in these patients. strict attention must be paid ... | 2006 | 16931375 |
deep fungal dermatitis in three inland bearded dragons (pogona vitticeps) caused by the chrysosporium anamorph of nannizziopsis vriesii. | the chrysosporium anamorph of nannizziopsis vriesii (canv), a keratinophilic fungus that naturally and experimentally causes severe and often fatal dermatitis in multiple reptile species, was isolated in pure culture from skin samples of three inland bearded dragons (pogona vitticeps) with deep granulomatous dermatomycosis. the first animal presented with a focal maxillary swelling involving the skin and gingiva. this lizard died while undergoing itraconazole and topical miconazole therapy. the ... | 2007 | 17510861 |
systemic mycobacteriosis in an inland bearded dragon (pogona vitticeps). | 2007 | 17435102 | |
shapes of differential pulse voltammograms and level of metallothionein at different animal species. | metallothioneins play a key role in maintaining homeostasis of essential metalsand in protecting of cells against metal toxicity as well as oxidative damaging. exceptinghumans, blood levels of metallothionein have not yet been reported from any animalspecies. blood plasma samples of 9 animal species were analysed by the adsorptive transferstripping technique to obtain species specific voltammograms. quite distinct records wereobtained from the takin (budorcas taxicolor), while other interesting ... | 2007 | 28903235 |
modulation of prey capture kinematics and the role of lingual sensory feedback in the lizard pogona vitticeps. | most organisms feed on a variety of prey that may differ dramatically in their physical and behavioural characteristics (e.g. mobility, mass, texture, etc.). thus the ability to modulate prey capture behaviour in accordance with the characteristics of the food appears crucial. in animals that use rapid tongue movements to capture prey (frogs and chameleons), the coordination of jaws and tongue is based on visual cues gathered prior to the prey capture event. however, most iguanian lizards have m ... | 2007 | 17368008 |
modulation, individual variation and the role of lingual sensory afferents in the control of prey transport in the lizard pogona vitticeps. | most organisms feed on a variety of food items that may differ dramatically in their physical and behavioural characteristics (e.g. mobility, mass, texture, etc.). thus the ability to modulate prey transport behaviour in accordance with the characteristics of the food appears crucial. consequently, prey reduction and transport movements must be adjusted to the natural variation in material properties of the food, between and within feeding sequences and transport cycles. here we describe an inve ... | 2008 | 18552296 |
the influence of hypoxia on the thermal sensitivity of skin colouration in the bearded dragon, pogona vitticeps. | one physiological mechanism used by reptiles to remain within thermal optima is their ability to reversibly alter skin colour, imparting changes in overall reflectance, and influencing the rate of heat gain from incident radiation. the ability to lighten or darken their skin is caused by the movement of pigment within the dermal chromatophore cells. additionally, lizards, as ectotherms, significantly lower their preferred body temperatures when experiencing stressors such as hypoxia. this decrea ... | 2008 | 18491114 |
a simple non-invasive protocol to establish primary cell lines from tail and toe explants for cytogenetic studies in australian dragon lizards (squamata: agamidae). | primary cell lines were established from cultures of tail and toe clips of five species of australian dragon lizards: tympanocryptis pinguicolla, tympanocryptis sp., ctenophorus fordi, amphibolurus norrisi and pogona vitticeps. the start of exponential cell growth ranged from 1 to 5 weeks. cultures from all specimens had fibroblastic morphology. cell lines were propagated continuously up to ten passages, cryopreserved and recovered successfully. we found no reduction in cell viability after shor ... | 2008 | 19199067 |
genotype differentiation of agamid adenovirus 1 in bearded dragons (pogona vitticeps) in the usa by hexon gene sequence. | bearded dragons (pogona vitticeps) are popular pets in the united states. agamid adenovirus 1 (agadv1) is an important infectious agent of bearded dragons. the only agadv1 sequences available to date are from a highly conserved region of the dna polymerase gene. degenerate primers were designed to amplify a variable region of the agadv1 hexon gene for sequencing. genetic differences were identified within the hexon gene of 17 bearded dragons from 4 collections. much less diversity was present in ... | 2009 | 19460315 |
gastric neuroendocrine carcinomas in bearded dragons (pogona vitticeps). | this article describes a newly recognized highly malignant neoplastic entity in young bearded dragons (pogona vitticeps), gastric neuroendocrine carcinomas, which readily metastasize. ten bearded dragons with histories of anorexia (8), vomiting (3), hyperglycemia (2), and anemia (3) were included in this study. all animals had neoplastic masses in their stomach, with metastasis to the liver. microscopically, 6 of these neuroendocrine carcinomas were well-differentiated and 4 were poorly differen ... | 2009 | 19605903 |
molecular marker suggests rapid changes of sex-determining mechanisms in australian dragon lizards. | distribution of sex-determining mechanisms across australian agamids shows no clear phylogenetic segregation, suggesting multiple transitions between temperature-dependent (tsd) and genotypic sex determination (gsd). these taxa thus present an excellent opportunity for studying the evolution of sex chromosomes, and evolutionary transitions between tsd and gsd. here we report the hybridization of a 3 kb genomic sequence (pvzw3) that marks the z and w microchromosomes of the australian central bea ... | 2009 | 19172405 |
devriesea agamarum causes dermatitis in bearded dragons (pogona vitticeps). | devriesea agamarum is frequently isolated from dermatitis in lizards, notably from cheilitis in spiny tailed lizards (genus uromastyx). it was the aim of the present study to assess the role of this bacterium as a causative agent of dermatitis by fulfilling koch's postulates. first, its association with diseased lizards was demonstrated. the bacterium was isolated from several, mainly desert dwelling squamate species showing symptoms of dermatitis and/or septicaemia. the affected lizards mainly ... | 2009 | 18834680 |
the zw sex microchromosomes of an australian dragon lizard share no homology with those of other reptiles or birds. | reptiles show a diverse array of sex chromosomal systems but, remarkably, the z sex chromosomes of chicken are homologous to the zw sex chromosomes of a species of gecko, gekko hokouensis, suggesting an ancient but common origin. this is in contrast to the zw sex chromosomes of snakes and a species of soft-shelled turtle, pelodiscus sinensis, which are nonhomologous to those of chicken or each other and appear to have been independently derived. in this paper, we determine what homology, if any, ... | 2009 | 19967443 |
dermatomycosis in a pet inland bearded dragon (pogona vitticeps) caused by a chrysosporium species related to nannizziopsis vriesii. | a chrysosporium sp. related to nannizziopsis vriesii was isolated in pure culture from squames and biopsies of facial lesions in a pet inland bearded dragon (pogona vitticeps) in spain. the presence in histological sections of morphologically consistent fungal elements strongly incriminates this fungus as the aetiological agent of infection. lesions regressed following treatment with oral ketoconazole and topical chlorhexidine and terbinafine until the lizard was lost to follow up 1 month later. ... | 2009 | 19659541 |
designing a successful antimicrobial treatment against devriesea agamarum infections in lizards. | dermatitis caused by devriesea agamarum poses a major health problem for the captive maintenance of several desert lizard species. this study was conducted to determine the optimal antimicrobial treatment to eliminate d. agamarum infections from lizards. first, the in vitro susceptibility of 42 d. agamarum isolates was determined for 10 different antimicrobial agents using an agar dilution method. in none of the isolates acquired antimicrobial resistance was demonstrated. then, two intramuscular ... | 2009 | 19497687 |
the tendinous patterns in the palmar surface of the lizard manus: functional consequences for grasping ability. | in lizards, distinct patterns of the tendinous structures associated with the forearm flexors have been described. in most lizards, the m. flexor digitorum longus ends in a tendinous plate with an embedded sesamoid, from which tendons run to the terminal phalanx of each digit. this structure is known as the flexor plate. in many polychrotid lizards, however, the flexor digitorum longus muscle is continuous with individual tendons running to each digit, and no complete flexor plate is present. in ... | 2009 | 19462454 |
systemic adenovirus infection in bearded dragons (pogona vitticeps): histological, ultrastructural and molecular findings. | three inland bearded dragons (pogona vitticeps) from two breeding groups were humanely destroyed following a period of anorexia. two of the animals were 8-months old and related and one animal was approximately 2-weeks old. necropsy examination revealed poor bodily condition but no other gross abnormalities. microscopically there was non-suppurative hepatitis and interstitial nephritis. multiple large, amphophilic, intranuclear inclusion bodies were present within hepatocytes and epithelial cell ... | 2009 | 19410259 |
the effect of thermal quality on the thermoregulatory behavior of the bearded dragon pogona vitticeps: influences of methodological assessment. | metabolic functions are generally optimized within a narrow range of body temperatures (t(b)'s), conferring thermoregulation great importance to the survival and fitness of an animal. in lizards, t(b) regulation is mainly behavioral, and the metabolic costs associated with behavioral thermoregulation are primarily locomotory. in reptiles, however, it has been proposed that they thermoregulate less precisely when the associated costs, metabolic or otherwise, are high. such a strategy enhances fit ... | 2009 | 19323642 |
globin gene structure in a reptile supports the transpositional model for amniote α- and β-globin gene evolution. | the haemoglobin protein, required for oxygen transportation in the body, is encoded by α- and β-globin genes that are arranged in clusters. the transpositional model for the evolution of distinct α-globin and β-globin clusters in amniotes is much simpler than the previously proposed whole genome duplication model. according to this model, all jawed vertebrates share one ancient region containing α- and β-globin genes and several flanking genes in the order mpg-c16orf35-(α-β)-gby-luc7l that has b ... | 2010 | 21116705 |
lizards respond to an extremely low-frequency electromagnetic field. | animals from a wide range of taxa have been shown to possess magnetic sense and use magnetic compasses to orient; however, there is no information in the literature on whether lizards have either of these abilities. in this study, we investigated the behavioral responses of a diurnal agamid lizard (pogona vitticeps) to a sinusoidal extremely low-frequency electromagnetic field (elf-emf; 6 and 8 hz, peak magnetic field 2.6 microt, peak electric field 10 v m(-1)). fourteen adult lizards were divid ... | 2010 | 20511511 |
a gastric neuroendocrine carcinoma expressing somatostatin in a bearded dragon (pogona vitticeps). | a metastatic gastric neuroendocrine carcinoma in a 2.5-year-old inland bearded dragon (pogona vitticeps) with a chronic history of anorexia, weight loss, depression, and acute melena is described. histologic examination of the gastric mass revealed a densely cellular tumor arranged in nests and occasional rosettes of hyperchromatic cells with oval to spindle-shaped nuclei and minimal cytoplasm; the tumor was supported by a moderate fibrovascular stroma. similar cells invaded through the gastric ... | 2010 | 20224102 |
effects of vitamin d3 supplementation and uvb exposure on the growth and plasma concentration of vitamin d3 metabolites in juvenile bearded dragons (pogona vitticeps). | the effectiveness of dietary vitamin d3 and uvb exposure on plasma vitamin d metabolites in growing bearded dragons (pogona vitticeps) was studied. a total of 84 (40 males and 44 females) newly hatched bearded dragons were allocated to six levels of oral vitamin d3 supplementation (0 to 400%) or six uvb exposure times (2 to 12 h). at 3 and 6 months of age, blood samples were obtained from each animal and analysed for 25(oh)d3 and 1,25(oh)2d3. at 3 months of age, plasma concentrations of 25(oh)d3 ... | 2010 | 20206712 |
thermoregulation and aggregation in neonatal bearded dragons (pogona vitticeps). | ectothermic vertebrates, such as reptiles, thermoregulate behaviorally by choosing from available temperatures in their environment. as neonates, bearded dragons (pogona vitticeps) are often observed to aggregate in vertical strata. a proximate mechanism for this behavior is the thermal advantage of heat storage (i.e., grouped lizards benefit through a decreased surface area to volume ratio), although competition for limited thermal resources, or aggregation for social reasons are alternative ex ... | 2010 | 20193698 |
extension, single-locus conversion and physical mapping of sex chromosome sequences identify the z microchromosome and pseudo-autosomal region in a dragon lizard, pogona vitticeps. | distribution of temperature-dependent sex determination (tsd) and genotypic sex determination (gsd) across the phylogeny of dragon lizards implies multiple independent origins of at least one, and probably both, modes of sex determination. female pogona vitticeps are the heterogametic sex, but zz individuals reverse to a female phenotype at high incubation temperatures. we used reiterated genome walking to extend z and w chromosome-linked amplified fragment length polymorphism (aflp) markers, an ... | 2010 | 19812616 |
autonomic control of the pulmonary surfactant system and lung compliance in the lizard. | an increase in body temperature in the bearded dragon, pogona vitticeps, is accompanied by an increase in the amount of pulmonary surfactant, a mixture of proteins and lipids, with the latter consisting predominantly of phospholipid and cholesterol. this increase may result from a temperature-induced change in autonomic input to the lungs, as perfusing the isolated lungs of p. vitticeps with either acetylcholine or adrenaline increases surfactant phospholipid release. however, whether acetylchol ... | 2010 | 9237305 |
comparison of chemistry analytes between 2 portable, commercially available analyzers and a conventional laboratory analyzer in reptiles. | advantages of handheld and small bench-top biochemical analyzers include requirements for smaller sample volume and practicality for use in the field or in practices, but little has been published on the performance of these instruments compared with standard reference methods in analysis of reptilian blood. | 2010 | 21198734 |
atherosclerosis associated with pericardial effusion in a central bearded dragon (pogona vitticeps). | atherosclerosis is a common disease in pet birds, particularly in psittacines, and is frequently found when performing postmortem examinations on adult and old dogs, in which it is mainly associated with endocrine diseases, such as hypothyroidism and diabetes mellitus. however, atherosclerosis is poorly documented in reptiles and consequently poorly understood. in the current case report, atherosclerosis and pericardial effusion were diagnosed in a 2-year-old male central bearded dragon (pogona ... | 2010 | 20807945 |
necrotising fungal dermatitis in a group of bearded dragons (pogona vitticeps). | 2010 | 20382936 | |
voriconazole, a safe alternative for treating infections caused by the chrysosporium anamorph of nannizziopsis vriesii in bearded dragons (pogona vitticeps). | dermal and systemic infections caused by the chrysosporium anamorph of nannizziopsis vriesii (canv) are highly prevalent in reptiles and may result in severe disease and high mortality. due to the high incidence of therapeutic failures, optimizing treatment is required. we first determined in this study the minimal inhibitory concentrations (mic) of itraconazole, voriconazole, amphotericin b and terbinafine against 32 canv isolates. for voriconazole, amphotericin b and terbinafine a monomodal mi ... | 2010 | 20370369 |
autocrine and paracrine shh signaling are necessary for tooth morphogenesis, but not tooth replacement in snakes and lizards (squamata). | here we study the role of shh signaling in tooth morphogenesis and successional tooth initiation in snakes and lizards (squamata). by characterizing the expression of shh pathway receptor ptc1 in the developing dentitions of three species (eublepharis macularius, python regius, and pogona vitticeps) and by performing gain- and loss-of-function experiments, we demonstrate that shh signaling is active in the squamate tooth bud and is required for its normal morphogenesis. shh apparently mediates t ... | 2010 | 19850027 |
isolation of a variant porphyromonas sp. from polymicrobial infections in central bearded dragons (pogona vitticeps). | isolates of gram-negative anaerobic bacteria from reptiles have only occasionally been identified to the genus and species level in the veterinary medical literature. in particular, reports identifying porphyromonas spp. from infections in reptiles are scarce. the present report describes unique porphyromonas isolates obtained from necrosuppurative infections in central bearded dragons (pogona vitticeps). the isolates grew in the presence of oxygen, were strongly hemolytic, and did not produce d ... | 2011 | 21217036 |
melanophoromas and iridophoromas in reptiles. | chromatophoromas are tumours of pigment-producing cells of the skin and are rarely reported in reptiles. these tumours are subclassified on the basis of the type of pigment. the present study characterizes chromatophoromas arising in 26 reptiles, including six snakes, 19 lizards and a tortoise. these include the first reports of melanophoromas in a yellow anaconda (eunectes notaeus), pigmy rattlesnake (sistrurus spp.), southern water snake (nerodia fasciata), veiled chameleon (chamaeleo calyptra ... | 2011 | 21864845 |
bearded dragons (pogona vitticeps) asymptomatically infected with devriesea agamarum are a source of persistent clinical infection in captive colonies of dab lizards (uromastyx sp.). | devriesea agamarum causes dermatitis and septicaemia in a variety of lizards, notably those belonging to the genus uromastyx, whereas other species such as bearded dragons (pogona vitticeps) seem to be asymptomatic carriers. using amplified fragment length polymorphism (aflp), the relatedness between 69 d. agamarum isolates was examined. the isolates derived from 44 diseased lizards, of which 31 belonged to the genus uromastyx, and from 25 healthy lizards, of which 21 were bearded dragons. eight ... | 2011 | 21354721 |
claudin-7-positive synchronous spontaneous intrahepatic cholangiocarcinoma, adenocarcinoma and adenomas of the gallbladder in a bearded dragon (pogona vitticeps). | in this study, synchronous spontaneous, independent liver and gallbladder tumours were detected in a bearded dragon (pogona vitticeps). the multiple tumours consisted of intrahepatic cholangiocarcinoma as well as in situ adenocarcinoma and two adenomas of the gallbladder. the biliary epithelial cells and the cholangiocarcinoma showed membranous cross-immunoreactivity for claudin-7. the gallbladder epithelial cells, its adenoma and adenocarcinoma showed basolateral cross-reactivity for claudin-7. ... | 2011 | 21354945 |
[comparison of the image quality of conventional and digital radiography in lizards. mammography technique versus digital detector system]. | a conventional high-resolution screen-film system (film kodak min-r s, kodak min-r 2000) was compared with an indirect digital detector system (varian paxscan 4030e) for use in radiography of lizards. | 2011 | 22143664 |
plasma biochemical reference values in clinically healthy captive bearded dragons (pogona vitticeps) and the effects of sex and season. | bearded dragons are one of the most popular pet lizard species, and biochemical reference values are useful for health management of these reptiles. | 2011 | 21790696 |
use of a deslorelin implant to control aggression in a male bearded dragon (pogona vitticeps). | 2011 | 21709050 | |
chemotherapeutic treatment for leukemia in a bearded dragon (pogona vitticeps). | a 4.5-yr-old, captive-bred, male bearded dragon (pogona vitticeps) presented for lethargy, anorexia, and increased mucoid salivation with upper respiratory clicks. diagnostics were declined and the bearded dragon was prescribed ceftazidime 20 mg/kg i.m. q 72 hr. the patient presented again 1 wk later with a marked monocytosis, heterophilia, and lymphocytosis, and a clinical diagnosis of chronic monocytic leukemia was made. chemotherapy with cytosine arabinoside (100 mg/m2 over 48 hr i.v.) was in ... | 2011 | 22946414 |
prey effect on capture kinematics in pogona vitticeps (iguania, squamata). | 2012 | 23009454 | |
transcutaneous pulmonoscopic removal of intrapneumonic mucus in a bearded dragon (pogona vitticeps). | 2012 | 22271800 | |
comparative evaluation of the cadaveric, radiographic and computed tomographic anatomy of the heads of green iguana (iguana iguana), common tegu (tupinambis merianae) and bearded dragon (pogona vitticeps). | radiology and computed tomography are the most commonly available diagnostic tools for the diagnosis of pathologies affecting the head and skull in veterinary practice. nevertheless, accurate interpretation of radiographic and ct studies requires a thorough knowledge of the gross and the cross-sectional anatomy. despite the increasing success of reptiles as pets, only a few reports over their normal imaging features are currently available. the aim of this study is to describe the normal cadaver ... | 2012 | 22578088 |
comparative evaluation of the cadaveric and computed tomographic features of the coelomic cavity in the green iguana (iguana iguana), black and white tegu (tupinambis merianae) and bearded dragon (pogona vitticeps). | contrast-enhanced computed tomographic studies of the coelomic cavity in four green iguanas, four black and white tegus and four bearded dragons were performed using a conventional ct scanner. anatomical reference cross sections were obtained from four green iguana, four black and white tegu and six bearded dragon cadavers; the specimens were stored in a -20°c freezer for 24 h then sliced into 5-mm intervals. the frozen sections were cleaned with water and photographed on both sides. the individ ... | 2013 | 23410482 |
molecular cytogenetic map of the central bearded dragon, pogona vitticeps (squamata: agamidae). | reptiles, as the sister group to birds and mammals, are particularly valuable for comparative genomic studies among amniotes. the australian central bearded dragon (pogona vitticeps) is being developed as a reptilian model for such comparisons, with whole-genome sequencing near completion. the karyotype consists of 6 pairs of macrochromosomes and 10 pairs microchromosomes (2n = 32), including a female heterogametic zw sex microchromosome pair. here, we present a molecular cytogenetic map for p. ... | 2013 | 23703235 |
sequence and gene content of a large fragment of a lizard sex chromosome and evaluation of candidate sex differentiating gene r-spondin 1. | scant genomic information from non-avian reptile sex chromosomes is available, and for only a few lizards, several snakes and one turtle species, and it represents only a small fraction of the total sex chromosome sequences in these species. | 2013 | 24344927 |
detection of agamid adenovirus-1 in clinically healthy bearded dragons (pogona vitticeps) in the uk. | 2013 | 23542658 | |
ranavirus infections associated with skin lesions in lizards. | ranaviral disease in amphibians has been studied intensely during the last decade, as associated mass-mortality events are considered to be a global threat to wild animal populations. several studies have also included other susceptible ectothermic vertebrates (fish and reptiles), but only very few cases of ranavirus infections in lizards have been previously detected. in this study, we focused on clinically suspicious lizards and tested these animals for the presence of ranaviruses. virological ... | 2013 | 24073785 |
encephalitozoonosis in two inland bearded dragons (pogona vitticeps). | microsporidiosis is reported rarely in reptiles. sporadic multisystemic granulomatous disease of captive bearded dragons (pogona vitticeps) has been associated with microsporidia showing encephalitozoon-like morphology. two such cases are described herein. both animals displayed clinical signs suggestive of renal failure. necropsy examination revealed granulomatous lesions in the liver and adrenal area in both animals, and in several other organs in one animal. the lesions were associated with i ... | 2013 | 22784783 |
the behavioural effects of predator-induced stress responses in the cricket (gryllus texensis): the upside of the stress response. | predator-induced stress responses are thought to reduce an animal's risk of being eaten. therefore, these stress responses should enhance anti-predator behaviour. we found that individual insects (the cricket gryllus texensis) show reliable behavioural responses (i.e. behavioural types) in a plus-shaped maze. an individual's behaviour in the plus maze remained consistent for at least 1/2 of its adult life. however, after exposure to a model predator, both male and female crickets showed a reduce ... | 2013 | 24307711 |
evidence for the transmission of salmonella from reptiles to children in germany, july 2010 to october 2011. | this study examines the salmonella status in reptiles kept in households with children suffering from gastroenteritis due to an exotic salmonella serovar, to obtain information on possible transmission paths. a number of affected households (n=79) were contacted, and almost half (34/79) comprised at least one reptile in the home. of the households, 19 were further studied, whereby a total of 36 reptiles were investigated. samples were taken from the reptiles including the oral cavity, the cloaca ... | 2013 | 24256890 |
periorbital adenocarcinoma in a bearded dragon (pogona vitticeps). | a 4.5-year-old female bearded dragon (pogona vitticeps) presented for periorbital swelling affecting the left eye. a well-organized, hypoechoic mass was noted ventral and medial to the globe on ocular ultrasound. the mass continued to grow despite antibiotic therapy, and an exenteration was performed. the mass was diagnosed via histopathology and immunohistochemical staining as a probable lacrimal gland carcinoma, although a harderian gland origin could not definitively be ruled out. the tumor r ... | 2013 | 23675816 |
blood vitamin d(3) metabolite concentrations of adult female bearded dragons (pogona vitticeps) remain stable after ceasing uvb exposure. | vitamin d deficiency can lead to several health problems collectively called metabolic bone disease (mbd). one commonly kept reptile species prone to develop mbd if managed incorrectly is the bearded dragon (pogona vitticeps). this study aimed to determine the extent to which adult female bearded dragons fed a diet low in vitamin d can use stored vitamin d and its metabolites to maintain plasma 25(oh)d(3) and 1,25(oh)(2)d(3) concentrations after discontinuing uvb exposure. blood samples of healt ... | 2013 | 23648288 |
diagnosis and treatment of a periocular myxosarcoma in a bearded dragon (pogona vitticeps). | a 5-year-old male australian bearded dragon (pogona vitticeps) was presented with a 2-month history of a periocular mass. the clinical evaluation included a physical examination, hematology, biochemistry, and radiographs. the mass was treated surgically and diagnosed as myxosarcoma. strontium-90 plesiotherapy was attempted, but the mass recurred 5 mo later. | 2014 | 24982518 |
assessment of platelet-derived growth factor using a splinted full thickness dermal wound model in bearded dragons (pogona vitticeps). | wounds in reptiles are a common reason for presentation to a veterinarian. at this time there is limited information on effective topical medications to aid in wound closure. the objectives of this study were to translate the splinted, full-thickness dermal wound model, validated in mice, to the bearded dragon (pogona vitticeps) and to determine the effect of topical becaplermin (bp), a platelet-derived growth factor (0.01%), on the rate of wound closure. ten bearded dragons were anesthetized an ... | 2014 | 25632675 |
autovaccination confers protection against devriesea agamarum associated septicemia but not dermatitis in bearded dragons (pogona vitticeps). | devrieseasis caused by devriesea agamarum is a highly prevalent disease in captive desert lizards, resulting in severe dermatitis and in some cases mass mortality. in this study, we assessed the contribution of autovaccination to devrieseasis control by evaluating the capacity of 5 different formalin-inactivated d. agamarum vaccines to induce a humoral immune response in bearded dragons (pogona vitticeps). each vaccine contained one of the following adjuvants: cpg, incomplete freund's, ribi, alu ... | 2014 | 25479609 |
cyclic colour change in the bearded dragon pogona vitticeps under different photoperiods. | the ability to change colour rapidly is widespread among ectotherms and has various functions including camouflage, communication and thermoregulation. the process of colour change can occur as an aperiodic event or be rhythmic, induced by cyclic environmental factors or regulated by internal oscillators. despite the importance of colour change in reptile ecology, few studies have investigated the occurrence of a circadian rhythm in lizard pigmentation. additionally, although colour change also ... | 2014 | 25354192 |
intraerythrocytic iridovirus in central bearded dragons (pogona vitticeps). | three adult central bearded dragons (pogona vitticeps) originating from a commercial breeding facility presented with clinical signs, including anorexia, dehydration, white multifocal lesions on the dorsal aspect of the tongue, blepharospasm, and weight loss. in 1 of 3 lizards, a marked regenerative anemia was noted, and all 3 bearded dragons had erythrocytic intracytoplasmic inclusion bodies. nine bearded dragons housed in contact also had identical, but fewer intraerythrocytic inclusions. incl ... | 2014 | 24855223 |
pharmacokinetics of subcutaneous versus intramuscular administration of ceftiofur crystalline-free acid to bearded dragons (pogona vitticeps). | to compare pharmacokinetics after a single im or sc injection of ceftiofur crystalline-free acid (ccfa) to bearded dragons (pogona vitticeps). | 2014 | 24762017 |
establishment of an agamid cell line and isolation of adenoviruses from central bearded dragons (pogona vitticeps). | a cell line was established from whole 6-8-week-old central bearded dragon (pogona vitticeps) embryos. cells were mid-sized and showed an elongated and polymorphic form. the cell line grew in a monolayer and has been serially passaged for 17 passages at time of publication. this cell line has been used with samples from adenovirus polymerase chain reaction (pcr)-positive bearded dragons, and 2 virus isolates have been obtained so far. the isolates show a clear cytopathic effect in inoculated cel ... | 2014 | 24569225 |
adenoviral infection in a collection of juvenile inland bearded dragons (pogona vitticeps). | juvenile inland bearded dragons (pogona vitticeps) from a breeding collection in south-east queensland were presented at age 6-10 weeks with neurological signs, poor growth and occasional deaths. histopathological examination revealed that six of eight lizards had multifocal non-suppurative hepatitis associated with 5-10 μm diameter, smudgy, basophilic, hyaline intranuclear inclusion bodies that marginated the nuclear chromatin. these histological lesions were considered consistent with adenovir ... | 2014 | 24471882 |
infection with devriesea agamarum and chrysosporium guarroi in an inland bearded dragon (pogona vitticeps). | description of clinical, microbiological and histopathological findings in a case of deep dermatitis in an inland bearded dragon (pogona vitticeps) caused by devriesea agamarum and chrysosporium guarroi. | 2014 | 24963553 |
complete genome sequence of campylobacter iguaniorum strain 1485et, isolated from a bearded dragon (pogona vitticeps). | campylobacter iguaniorum has been isolated from reptiles. this campylobacter species is genetically related to campylobacter fetus and campylobacter hyointestinalis. here we present the first whole-genome sequence for this species. | 2014 | 25146144 |
prevalence of neutralising antibodies against adenoviruses in lizards and snakes. | adenoviruses (advs) are relatively common in lizards and snakes, and several genetically distinct advs have been isolated in cell culture. the aims of this study were to examine serological relationships among lizard and snake advs and to determine the frequency of adv infections in these species. isolates from a boa constrictor (boa constrictor), a corn snake (pantherophis gutattus) and a central bearded dragon (pogona vitticeps), and two isolates from helodermatid lizards (heloderma horridum a ... | 2014 | 25163614 |
morphology and fibre-type distribution in the tongue of the pogona vitticeps lizard (iguania, agamidae). | agamid lizards use tongue prehension for capturing all types of prey. the purpose of this study was to investigate the functional relationship between tongue structure, both surface and musculature, and function during prey capture in pogona vitticeps. the lack of a detailed description of the distribution of fibre-types in the tongue muscles in some iguanian lizards has hindered the understanding of the functional morphology of the lizard tongue. three methodological approaches were used to fil ... | 2014 | 25109482 |
immunofluorescent staining reveals hypermethylation of microchromosomes in the central bearded dragon, pogona vitticeps. | studies of model organisms have demonstrated that dna cytosine methylation and histone modifications are key regulators of gene expression in biological processes. comparatively little is known about the presence and distribution of epigenetic marks in non-model amniotes such as non-avian reptiles whose genomes are typically packaged into chromosomes of distinct size classes. studies of chicken karyotypes have associated the gene-richness and high gc content of microchromosomes with a distinct e ... | 2015 | 26719769 |
the diet of free-roaming australian central bearded dragons (pogona vitticeps). | the central bearded dragon (pogona vitticeps) is one of the most popular pet lizards. however, little is known regarding their nutrient requirement, or their natural diet. therefore, the stomach contents of 14 free-roaming p. vitticeps were determined by flushing. these stomach contents were described taxonomically, and analyzed for crude protein content as well as fatty acid content and composition. most of the dry matter intake was in the form of animal material (61%) stemming from nine arthro ... | 2015 | 25773132 |
porphyromonas pogonae sp. nov., an anaerobic but low concentration oxygen adapted coccobacillus isolated from lizards (pogona vitticeps) or human clinical specimens, and emended description of the genus porphyromonas shah and collins 1988. | during the process of identifying a gram-negative coccobacillus isolated from a human clinical specimen, we found that the isolate's 16s rrna gene had very close sequence identity with that of a variant porphyromonas isolated from polymicrobial infections in the central bearded dragon, a species of lizard [2]. the 16s rrna gene sequences of the human isolate and of six isolates from lizards were nearly identical (99.9-100%). phylogenetic analysis placed all of these isolates in a single phylogen ... | 2015 | 25481042 |
novel parvoviruses in reptiles and genome sequence of a lizard parvovirus shed light on dependoparvovirus genus evolution. | here, we report the detection and partial genome characterization of two novel reptilian parvoviruses derived from a short-tailed pygmy chameleon (rampholeon brevicaudatus) and a corn snake (pantherophis guttatus) along with the complete genome analysis of the first lizard parvovirus, obtained from four bearded dragons (pogona vitticeps). both homology searches and phylogenetic tree reconstructions demonstrated that all are members of the genus dependoparvovirus. even though most dependoparvovir ... | 2015 | 26067293 |
high-coverage sequencing and annotated assembly of the genome of the australian dragon lizard pogona vitticeps. | the lizards of the family agamidae are one of the most prominent elements of the australian reptile fauna. here, we present a genomic resource built on the basis of a wild-caught male zz central bearded dragon pogona vitticeps. | 2015 | 26421146 |
social learning by imitation in a reptile (pogona vitticeps). | the ability to learn through imitation is thought to be the basis of cultural transmission and was long considered a distinctive characteristic of humans. there is now evidence that both mammals and birds are capable of imitation. however, nothing is known about these abilities in the third amniotic class-reptiles. here, we use a bidirectional control procedure to show that a reptile species, the bearded dragon (pogona vitticeps), is capable of social learning that cannot be explained by simple ... | 2015 | 25199480 |
development and validation of a novel hydrolysis probe real-time polymerase chain reaction for agamid adenovirus 1 in the central bearded dragon (pogona vitticeps). | agamid adenovirus 1 (agadv-1) is a significant cause of disease in bearded dragons (pogona sp.). clinical manifestations of agadv-1 infection are variable and often nonspecific; the manifestations range from lethargy, weight loss, and inappetence, to severe enteritis, hepatitis, and sudden death. currently, diagnosis of agadv-1 infection is achieved through a single published method: standard nested polymerase chain reaction (npcr) and sequencing. standard npcr with sequencing provides reliable ... | 2015 | 25776549 |
anesthetic induction and recovery parameters in bearded dragons (pogona vitticeps): comparison of isoflurane delivered in 100% oxygen versus 21% oxygen. | inland bearded dragons (pogona vitticeps, n=6) were anesthetized for 1 hr using isoflurane in either 100% oxygen or 21% oxygen (fi 21; medical-grade room air). parameters of anesthetic depth were recorded throughout both induction and recovery by an observer blinded to the fraction of inspired oxygen (fio2), including the loss and return of withdrawal and righting reflexes, muscle tone, ability to intubate or extubate, and return to spontaneous respiration. physiologic data were recorded every 5 ... | 2015 | 26352957 |
sex reversal triggers the rapid transition from genetic to temperature-dependent sex. | sex determination in animals is amazingly plastic. vertebrates display contrasting strategies ranging from complete genetic control of sex (genotypic sex determination) to environmentally determined sex (for example, temperature-dependent sex determination). phylogenetic analyses suggest frequent evolutionary transitions between genotypic and temperature-dependent sex determination in environmentally sensitive lineages, including reptiles. these transitions are thought to involve a genotypic sys ... | 2015 | 26135451 |
measurement of intraocular pressure in healthy unanesthetized inland bearded dragons (pogona vitticeps). | to evaluate the use of rebound and applanation tonometry for the measurement of intraocular pressure (iop) and to assess diurnal variations in and the effect of topical anesthesia on the iop of healthy inland bearded dragons (pogona vitticeps). | 2015 | 26000596 |
ultrasonographic anatomy of bearded dragons (pogona vitticeps). | to determine which organs can be reliably visualized ultrasonographically in bearded dragons (pogona vitticeps), describe their normal ultrasonographic appearance, and describe an ultrasonographic technique for use with this species. | 2015 | 25835171 |