| effect of bacterial pyrogen on three lizard species. | 1. three lizard species (callopistes maculatus, gerrhosaurus major, and varanus exanthematicus) were tested for their response to intraperitoneal injection of alcohol-killed aeromonas sobria. 2. a paired experimental design, in which each animal received an injection of sterile saline and 1 x 10(10) a. sobria, was utilized. 3. c. maculatus demonstrated a statistically significant increase in mean selected body temperature (msbt) after bacteria injection. 4. g. major and v. exanthematicus did not ... | 1990 | 1976479 |
| the acute phase response in the sudan plated lizard, gerrhosaurus major. | the sudan plated lizard (gerrhosaurus major), previously reported to be an afebrile species, was utilized in a series of experiments to test for various aspects of the acute phase response. treatment of individuals with the antibiotic baytril resulted in a slight (0.5 degree c) but significant reduction in mean selected body temperature (msbt), while treatment with saline did not lower msbt. nonantibiotic treatment individuals had depressed plasma iron levels (86.6 +/- 22.4 micrograms fe 100 ml- ... | 1998 | 9773512 |
| re: cutaneous leishmaniasis in balb/c mice caused by a sauroleishmania species isolated from a plated lizard, gerrhosaurus major (squamata cordylidae) | | 1999 | 10685319 |
| three novel herpesviruses associated with stomatitis in sudan plated lizards (gerrhosaurus major) and a black-lined plated lizard (gerrhosaurus nigrolineatus). | glossal stomatitis was observed in a sudan plated lizard (gerrhosaurus major) with severe dyspnea. on necropsy, intranuclear inclusion bodies were seen in the periglottal lingual epithelium. labial stomatitis was seen in a second sudan plated lizard and a black-lined plated lizard (g. nigrolineatus). degenerate polymerase chain reaction (pcr) primers targeting a conserved region of herpesvirus dna-dependent dna polymerase gene were used to amplify products from lesions from each lizard. nucleoti ... | 2004 | 15193073 |
| separating the effects of prey size and speed on the kinematics of prey capture in the omnivorous lizard gerrhosaurus major. | feeding behavior is known to be modulated as prey properties change. during prey capture, external prey properties, including size and mobility, are likely some of the most important components in predator-prey interactions. whereas prey size has been demonstrated to elicit modulation of jaw movements during capture, how prey speed affects the approach and capture of prey remains unknown. we quantified the kinematics associated with movements of both the feeding and locomotor systems during prey ... | 2010 | 20521149 |
| a description of two new species of coccidia (apicomplexa: eimeriidae) from african reptiles with nomenclatural corrections for two caryospora and one eimeria species from snakes. | two new species of coccidian parasites are described from african reptiles. oocysts of eimeria foulshami sp. n. from the plated lizard gerrhosaurus major bottegoi del prato of sudan are ellipsoidal, 24.1 x 14.9 (23-26.5 x 14-17.8) microm with a bilayered, colourless oocyst wall and lack polar granules. the ellipsoidal sporocysts average 8.6 x 4.6 (7-10.6 x 4.4-7) microm and possess a prominent, globular, sporocyst residuum. oocysts of caryospora regentensis sp. n. from the eastern green mamba de ... | 2001 | 11266129 |
| pre-existing bacterial infections, not stress fever, influenced previous studies which labeled gerrhosaurus major an afebrile lizard species. | early studies indicated that the sudan plated lizard, gerrhosaurus major, did not exhibit a febrile response when challenged with bacterial pyrogen. more recent results indicated that a 14-day antibiotic treatment regime produced a significant decrease (0.5 +/- 0.1 degree c) in the mean selected body temperature (msbt) for this species (31.3 +/- 0.2-30.8 +/- 0.2 degrees c). the antibiotic treatment results suggested that g. major already had a fever caused by a pre-existing bacterial infection. ... | 1999 | 10665384 |
| a molecular phylogeny of the african plated lizards, genus gerrhosaurus wiegmann, 1828 (squamata: gerrhosauridae), with the description of two new genera. | we constructed a molecular phylogeny of the african plated lizard family gerrhosauridae using two mitochondrial markers (nd2, 732 bp; 16s, 576 bp) and one nuclear marker (prlr, 538 bp). this analysis showed that the subfamily gerrhosaurinae consists of five major clades which we interpret as representing five genera. the genera tetradactylus and cordylosaurus were each recovered as monophyletic, but gerrhosaurus as currently conceived is paraphyletic, consisting of three distinct genus-level ass ... | 2013 | 25113712 |
| diagnostic sensitivity of ultrasound, radiography and computed tomography for gender determination in four species of lizards. | gender determination is frequently requested by reptile breeders, especially for species with poor or absent sexual dimorphism. the aims of the current study were to describe techniques and diagnostic sensitivities of ultrasound, radiography, and computed tomography for gender determination (identification of hemipenes) in four species of lizards. nineteen lizards of known sex, belonging to four different species (pogona vitticeps, uromastyx aegyptia, tiliqua scincoides, gerrhosaurus major) were ... | 2016 | 25065912 |
| heart rate and respiration in reptiles: contrasts between a sit-and-wait predator and an intensive forager. | the current study investigated respiration and heart rate in two species of reptiles with distinct behavioral strategies: (1) the sudan plated lizard (gerrhosaurus major), a sit-and-wait predator; and (2) the savanna monitor (varanus exanthematicus), an intensive forager. it was hypothesized that (a) the plated lizard would not express respiratory sinus arrhythmia, and (b) the monitor, a reptile with behavioral and physiological characteristics similar to mammals, might express respiratory sinus ... | 2003 | 12812808 |
| locomotor-feeding coupling during prey capture in a lizard (gerrhosaurus major): effects of prehension mode. | in tetrapods, feeding behaviour in general, and prey capture in particular, involves two anatomical systems: the feeding system and the locomotor system. although the kinematics associated with the movements of each system have been investigated in detail independently, the actual integration between the two systems has received less attention. recently, the independence of the movements of the jaw and locomotor systems was reported during tongue-based prey capture in an iguanian lizard (anolis ... | 2009 | 19251991 |