Publications
| Title | Abstract | Year(sorted ascending) Filter | PMID Filter |
|---|
| distribution of cholinesterase in the nervous system of iguana iguana. | 1962 | 24547002 | |
| formation of the embryonic migration layers in the cerebellar anlage of the reptile iguana iguana. | 1962 | 13983090 | |
| succinic dehydrogenase activity in the nucleolus of the normal and tumourous liver cells of the common iguana (iguana iguana). | 1964 | 14121944 | |
| oxygen transport by the circulatory system of the green iguana (iguana iguana) at different body temperatures. | 1966 | 5922740 | |
| [generalized amoebiasis without intestinal symptoms in an iguana (iguana iguana) (reptilia, iguanidae), caused by entamoeba invadens (protozoa, amoebozoa)]. | 1966 | 6011419 | |
| the somatic chromosomes of 3 lizard species: gekko gecko, iguana iguana, and crotaphytus collaris. | 1967 | 6062904 | |
| arthitectonic studies of the telencephalon of iguana iguana. | 1967 | 6035667 | |
| conversion of 7-alpha,12-alpha-dihydroxycholest-4-en-3-one to 5-alpha-cholestane-3-alpha, 7-alpha,12-alpha-triol by iguana liver microsomes. | the role of 7alpha,12alpha-dihydroxycholest-4-en-3-one as an intermediate in the formation of 5alpha-bile acids from cholesterol was investigated with liver preparations of iguana iguana in vitro. the microsomal fraction of iguana liver catalyzed the transformation of 7alpha,12alpha-dihydroxycholest-4-en-3-one to 5alpha-cholestane-3alpha,7alpha,12alpha-triol in good yield. 7alpha,12alpha-dihydroxy-5alpha-cholestan-3-one served as an intermediate. under the conditions employed, formation of the c ... | 1968 | 5640503 |
| electroanesthesia of green iguanas (iguana iguana). | 1969 | 5388159 | |
| disturbance of bone formation in the common iguana (iguana iguana l): pathology and etiology. | 1969 | 5407697 | |
| [light and electron microscopic studies of the islets of langerhans in the green iguana (iguana iguana)]. | 1970 | 4922315 | |
| arteriosclerosis in an iguana (iguana iguana). | 1970 | 5465565 | |
| the pathogenicity for mice of two species of salmonella isolated from the green iguana (iguana iguana). | 1970 | 4916230 | |
| [e. coli serotype 078:k80 (b):h--in a green iguana (iguana iguana l.)]. | 1971 | 4935883 | |
| ascending tectal efferent projections in the lizard iguana iguana. | 1971 | 5135558 | |
| the "paranuclear corpuscles" in poikilothermic vertebrates: description of a new species of pirhemocyton in iguana iguana of venezuela, with remarks on the nature of these organisms and their relation to allied parasites. | 1971 | 5561065 | |
| electron microscopy observations on a new herpes-type virus isolated from iguana iguana and propagated in reptilian cells in vitro. | ultrastructural observations on a new viral isolate, designated iguana virus, indicate that it is consistently present in intranuclear inclusions, possesses a +/- 115-nm nucleocapsid, ranges from 165 to 300 nm in diameter in the enveloped form, and exhibits cubic symmetry (probably 162 capsomeres). it is concluded that it is a herpes-type virus, the morphological evidence being in agreement with and supporting the biological and physical characteristics presented by clark and karzon. several fin ... | 1972 | 4344304 |
| [pupillary light reflexes in the green iguana (iguana iguana)]. | 1972 | 4679370 | |
| reptilian neurohypophyseal hormones: the active peptides of a saurian, iguana iguana. | 1972 | 4635466 | |
| iguana virus, a herpes-like virus isolated from cultured cells of a lizard, iguana iguana. | an agent cytopathic for terrapene and iguana cell cultures was isolated from spontaneously degenerating cell cultures prepared from a green iguana (iguana iguana). the agent, designated iguana virus, caused a cytopathic effect (cpe) of a giant cell type, with eosinophilic inclusions commonly observed within giant cell nuclei. incubation temperature had a marked effect on cpe and on virus release from infected cells. within the range of 23 to 36 c, low temperatures favored cpe characterized by cy ... | 1972 | 4344303 |
| thermal patterns in the heating and cooling of iguana iguana and ctenosaura hemilopha. | 1973 | 4146630 | |
| sleep and wakefulness in iguanid lizards, ctenosaura pectinata and iguana iguana. | 1973 | 4802023 | |
| the effect of temperature on ventilation in the green iguana (iguana iguana). | 1973 | 4145707 | |
| surgical repair of a herniated lung in a common iguana. | 1973 | 4742094 | |
| architectonic studies of the diencephalon of iguana iguana (linnaeus). | 1973 | 4715300 | |
| the connections and laminar organization ofthe optic tectum in a reptile (lguana iguana). | the goals of this study were: (1) to describe the total pattern of projections from the optic tectum of iguana iguana and pseudemys scripta; and (2) to describe the contributions of particular lamina of the iguana's optic tectum to this total pattern. lesions were made in the optic tectum of the iguana which damaged either all or only certain tectal laminae and, for comparison with the iguana, lesions in the turtle's optic tectum were made which involved all laminae. the anterograde degeneration ... | 1975 | 1176645 |
| nutritional osteodystrophy in captive green iguanas (iguana iguana). | captive lizards fed a variety of vegetarian and carnivorous diets frequently develop severe nutritional osteodystrophy. five hatchling iguanas which were captive for 5 months and fed a diet low in calcium and phosphorus developed clinical signs and lesions typical of nutritional osteodystrophy in captive lizards. they had tetany with severe osteoporosis, pathologic fractures, and cartilaginous diaphyseal enlargements of long bones which either were associated with fractures or with intact bones. ... | 1976 | 823702 |
| circulating androgen and estrogen concentrations in lizards (iguana iguana). | 1976 | 992358 | |
| oral food processing in two herbivorous lizards, iguana iguana (iguanidae) and uromastix aegyptius (agamidae). | the anatomy and function of the feeding apparatus in iguana iguana and uromastix aegyptius were studied by dissection, cinematic and cineradiographic techniques. the feeding behavior of these species differs from that of insectivorous lizards in the cropping action involves movement of both the upper jaw around the atlantooccipital joint and the lower jaw around the mandibular joint; and in uromastix only, streptostylic movement of the quadrate. often movements of the whole head play a supplemen ... | 1976 | 1255734 |
| behavior and electrical brain stimulation in the green iguana, iguana iguana l. i. schematic brain atlas and stimulation device. | 1976 | 797429 | |
| nucleotide sequence of 5 s ribosomal ribonucleic acid of iguana iguana. | cell cultures of the reptile iguana iguana have been labeled with 32po4(3-) and the resulting radioactive 5 s rrna isolated. enzymatic digests of the radioactive rna were fractionated by standard procedures, and the products of the digestions sequenced. from the sequences of the oligonucleotides produced by enzymatic digestion of the iguana 5 s rrna it is possible to propose a primary sequence for this rna which differs in only two positions (2 and 25) from the sequence known for mammalian 5 s r ... | 1976 | 977575 |
| cellular and extracellular dehydration, and angiotensin as stimuli to drinking in the common iguana iguana iguana. | 1. after water deprivation, the iguana promptly drank slightly more than enough water to restore the body fluids to isotonicity even under conditions of hypervolaemia. 2. in response to systemic injections of hypertonic solutions of nacl and sucrose, the iguana drank and retained enough water to dilute the injected load to isotonicity irrespective of whether water was offered immediately or after 3 hr, and irrespective of whether the solute was administered i.v. or i.p. 3. hypertonic solutions t ... | 1977 | 850202 |
| tazonomy of toxoplasma. | after reviewing reports of the hosts, structure and life cycle of toxoplasma, the genus is placed in the apicomplexan family eimeriidae and the folllowing 7 species are recognized: toxoplasma gondii (nicolle & manceaux) (type species) from about 200 species of mammals and birds, with oocysts in felids; toxoplasma alencari (da costa & pereira) from the frog leptodactylus ocellatus; toxoplasma brumpti coutelen from the iguana iguana tuberculata; toxoplasma colubri tibaldi from the snakes coluber m ... | 1977 | 325203 |
| social behavior in hatchling green iguanas: life at a reptile rookery. | hatchling green iguanas (iguana iguana) emerge from the ground in small groups in a communal nesting area on a small panamanian islet and engage in complex social interactions. iguanas from different clutches often join together before and during departure from the nest site. they also usually move around the islet and migrate from it to the larger adjacent landmass in social groups. these and other observations indicate that the sophistication of saurian social organization and neonate behavior ... | 1977 | 17816420 |
| behavior and electrical brain stimulation in the green iguana, iguana iguana l. ii. stimulation effects. | behavioral responses were electrically elicited in the brains of 21 green iguanas. at 518 stimulation sites, a limited number of behaviors could be reliably elicited. except for some motor responses which had a forced appearance, they corresponded to the basic activity of green iguanas, exploratory behavior, display, defensive and escape-related behavior. head-nodding displays were reliably elicited post stimulation when imminent escape was prevented experimentally but rarely during stimulation. ... | 1978 | 648603 |
| the organization of central auditory pathways in a reptile, iguana iguana. | the present experiments were designed to trace the central auditory pathways in an extant reptile, the new worlkd lizard--iguana iguana, utilizing anterograde axonal degeneration stained by the fink-heimer ('67) method and the retrograde axonal transport of horseradish peroxidase (lavail and lavail, '74). beginning with the projections of the auditory portion of the viiith nerve, the ascending pathways were traced through successive relay nuclei to the telencephalon. the auditory portion of the ... | 1978 | 632382 |
| the fine structure of the parietal retinas of anolis carolinensis and iguana iguana. | an electron microscopic examination of the parietal retinas of anolis carolinensis and iguana iguana demonstrated within each retina (1) two distinct populations of neurons, (2) two populations of glia, and (3) a population of photoreceptors which could not be subdivided. a small population of very electron-dense cells, in many respects similar to photoreceptors, was also found in the iguana. correspondingly dark processes were found in the plexiform layer of each retina. parietal photoreceptors ... | 1979 | 476797 |
| a second class of neurons within the retinas of the parietal eyes of anolis carolinensis and iguana iguana. | 1979 | 435984 | |
| a taxonomic revision of small neotropical saurian malarias allied to plasmodium minasense. | saurian malaria species which produce schizonts smaller than normal erythrocyte nuclei, with 4-8 merozoietes and gametocytes equal to or smaller than erythrocyte nuclei in size, parasitizing hosts of the lizard families scincidae, iguanidae and teiidae in the neotropics are considered to be plasmodium minasense carini and rudolph, 1912. subspecific designations are given to distinctive populations parasitizing different host species: p. minasense minasense is recognized from the type host, mabuy ... | 1979 | 533109 |
| plasma lipid concentrations for some brazilian lizards. | 1. plasma concentrations of cholesterol, cholesteryl esters, phospholipids and triglycerides were determined for ten species of brazilian lizards, iguana iguana, tropidurus torquatos and t. semitaeniatus (iguanidae), tupinambis teguixin, ameiva ameiva and cnemidophorus ocellifer (teiidae), mabuya maculata (scincidae), hemidactylus mabouia (gekkonidae), amphisbaenia vermicularis and leposternon polystegum (amphisbaenidae). 2. considerable inter- and intra-species variations in plasma lipid concen ... | 1979 | 318307 |
| some corrections of coccidian (apicomplexa: protozoa) nomenclature. | the following nomenclatural corrections and changes are introduced for the coccidia. new species: cryptosporidium rhesi from the rhesus monkey macaca mulatta; cryptosporidium serpentis from the snakes elaphe guttata, elapha subocularis, crotalus horridus, and sanzinia madagascarensis; eimeria perazae from the lizard cnemidophorus l. lemniscatus; and eimeria tarichae from the salamander taricha toirosa. new combinations: orcheobius carinii for cariniella carinii from the frog leptodactylus ocella ... | 1980 | 7463253 |
| nucleus laminaris of the torus semicircularis: projection to spinal cord in reptiles. | neurons in nucleus laminaris of the torus semicircularis were retrogradely labeled following application of horseradish peroxidase (hrp) to the cervical spinal cord in two lizards (gekko gecko and iguana iguana) and a turtle (pseudemys scripta). different patterns of cell labeling were seen among the species studied and may be related to the distinctive differences in head and body movements seen in these animals during defensive, aggressive and social behaviors. | 1981 | 6270598 |
| scanning electron microscope studies of the auditory papillae of some iguanid lizards. | the papillae basilares of 16 species (10 general) of iguanid lizards were studied by scanning electron microscopy. variations in the surface structures of the auditory papillae showed the following major differences: 1)papillae with localization of the unidirectional hair cells at the apical end of the papilla (anolis carolinensis); 2)papillae with absence or loss of a portion of the apical bidirectional hair-cell segment (basiliscus basiliscus); 3)papillae with a central, short ciliated, unidir ... | 1981 | 7304475 |
| sensory representation in reptilian optic tectum: some comparisons with mammals. | the sensory representations in the tectum of iguana iguana were studied with electrophysiological recording techniques, and visual, somatic, and auditory cells were found to be represented here. these cells were not equally distributed throughout the tectal laminae. upper tectal laminae were populated exclusively by visual cells, and deeper laminae were primarily nonvisual. the intermediate laminae had nonvisual, as well as visual, cells. maps of the visual and somatic representations were const ... | 1981 | 7287940 |
| a hypocalcemic response to synthetic salmon calcitonin in the green iguana, iguana iguana. | 1981 | 7262533 | |
| pulmonary oxygen transport during activity in lizards. | oxygen consumption (mo2), effective alveolar ventilation (veff), arterial and alveolar po2 (pao2, pao2) and the alveolar-arterial po2 difference [(a--a)po2] were determined in the lizards varanus exanthematicus and iguana iguana at rest and during treadmill exercise at 35 degrees c. in both species, veff increased more rapidly than mo2 giving rise to an increased pao2. in contrast, pao2 remained unchanged through the highest levels of mo2 attained. as a result, the (a--a)po2 increased with incre ... | 1981 | 7280383 |
| ventilation and acid-base balance during graded activity in lizards. | arterial pco2, hydrogen ion ([h+]a), and lactate ([l]a) concentrations, rates of metabolic co2 production (vco2) and o2 consumption (vo2), and effective alveolar ventilation (veff) were determined in the lizards varanus exanthematicus and iguana iguana at rest and during steady-state treadmill exercise at 35 degrees c. in varanus, vco2 increased ninefold and vo2 sixfold without detectable rise in [l]a at running speeds below 1.0 to 1.5 km x h-1. in this range, veff increased 12-fold resulting in ... | 1981 | 6779642 |
| acid-base imbalance in lizards during activity and recovery. | 1. the effects of treadmill exercise on oxygen consumption (v02), carbon dioxide production (vco2), arterial blood lactate concentration ([l-]a), arterial blood ph and arterial gas tensions (pao2 and paco2) were measured in 3 species of lizards (varanus salvator, v. exanthematicus, iguana iguana) 2. varanus salvator was exercised 45 min at an intensity which required 85% of its vo2 max. v. salvator utilized supplementary anaerobic metabolism during the first 10 min of this sustainable exercise, ... | 1982 | 7108439 |
| transfer of fermentative microbes between generations in a herbivorous lizard. | iguana iguana is herbivorous throughout life and utilizes a microbial fermentation system in the elaborated hindgut to break down plant cell walls. iguanas reared in captivity grew more slowly than wild hatchlings and failed to develop the same complex populations of fermentative microbes. captive hatchlings fed fresh fecal material from an adult iguana acquired the complex microflora and grew as rapidly as wild hatchlings. in the field, hatchlings actively associated with adults during the firs ... | 1982 | 17735744 |
| morphogenesis of the nasal capsule, the epithelial nasal tube and the organ of jacobson in sauropsida. vi. morphogenesis of the nasal apparatus in iguana iguana shaw and morphological interpretation of the individual structures. | 1982 | 7084836 | |
| lysine derived cross-links are present in a non-elastin, proline-rich protein fraction of iguana iguana eggshell. | 1. eggshell of iguana iguana contains a variety of lysine-derived cross-linking amino acids apparently identical with some that occur in elastin. 2. quantification of desmosine by amino acid analysis and radioimmunoassay gave estimates of 217 ng per mg and 109 ng per mg (dry weights), respectively. 3. [3h]nabh4 reduction of eggshell protein established presence of lysine-derived aldehydes, allysine and allysine-aldol. 4. enzymatic and chemical treatments indicate these cross-links occur in a non ... | 1982 | 6181935 |
| receptive-field properties in reptilian optic tectum: some comparisons with mammals. | the receptive-field properties of single cells in the optic tectum of iguana iguana were studied using the same procedures as have been used in this laboratory in studying its mammalian homologue, the superior colliculus. surprisingly, despite some species-specific characteristics, the range of physiological properties of tectal and superior collicular cells appeared to be strikingly similar. this observation is not consistent with the notion that functional differences between these structures ... | 1983 | 6875641 |
| posthatching yolk energy in a lizard: utilization pattern and interclutch variation. | newly hatched green iguanas, iguana iguana, retain a yolk mass which is similar in relative size (13.6% of body mass) and caloric content (6.87 kcal/g dm) to the posthatching yolks described in loggerhead turtles (caretta caretta) and birds. the lipid: protein ratio in posthatching iguana yolk remains constant through depletion, which indicates that the nutrients are removed and utilized at the same rate. the yolk mass provides an important energy supplement for iguanas during the first month of ... | 1983 | 28310332 |
| telencephalic connections in lizards. ii. projections to anterior dorsal ventricular ridge. | three distinct cytoarchitectonic regions were identified within the anterior dorsal ventricular ridge (advr) of two species of lizards, gekko gecko and iguana iguana. these regions have been named according to their general topographical positions: medial area, caudolateral area, and rostrolateral area. injections of horseradish peroxidase throughout the advr demonstrated that each of the three areas of the advr receives projections from specific thalamic nuclei which are associated with specifi ... | 1984 | 6209314 |
| telencephalic connections in lizards. i. projections to cortex. | the afferent connections to five cortical regions in two distantly related species of lizards (gekko gecko and iguana iguana) were studied by means of retrograde transport of horseradish peroxidase conjugated to wheat germ agglutinin. each of the five cortical regions is characterized by a specific pattern of projections from telencephalic, thalamic, hypothalamic, and brainstem regions. subdivisions within the five cortical regions also receive different patterns of projections. the thalamo-cort ... | 1984 | 6209313 |
| diet selection and digestion in iguana iguana: the importance of age and nutrient requirements. | the green iguana, iguana iguana, is herbivorous throughout life, and depends on a microbial fermentation system in the hindgut to degrade plant fiber. because the metabolic rates of lizards are proportional to body mass raised to the 0.80 power, hatchling iguanas have 2x, and juveniles 1.4x, greater relative energy requirements (kjxg body mass-1xday-1) than full-grown adults. growing animals also need a higher protein intake, for contruction of body tissues, than do mature animals. this study in ... | 1984 | 28309412 |
| tooth replacement and growth in the young green iguana, iguana iguana. | a study using eight rapidly growing young green iguanas (iguana iguana; initial mean weight 68.0 ± 3.8 gm) examined the changes in the wave replacement of teeth, the increased size of the teeth, and the posterior migration of tooth positions over a period of 16 weeks. the teeth increase in width as the lizards grow. the tooth positions shifted posteriorly, providing adequate space for the larger replacement teeth. these observations suggest that the wave replacement of teeth allows for growth of ... | 1985 | 30011973 |
| disease patterns in the detroit zoo: a study of reptilian and amphibian populations from 1973 through 1983. | a retrospective study was conducted to determine disease patterns in reptilian and amphibian populations at the detroit zoo from 1973 through 1983. in the reptilian population (mean +/- sd = 285.2 +/- 28), overall annual mortality rates were 1% to 40%. mortality rates were highest in the fall months (20%) and lowest in the winter months (6%). the most frequently affected reptiles were iguana (iguana iguana), reticulated python (python reticulatus), rattlesnakes (crotalus spp), common boa (constr ... | 1985 | 3878352 |
| determination of calcitonin in reptilian serum by heterologous radioimmunoassay. | a heterologous radioimmunoassay for reptilian calcitonin using a commercially available kit for human calcitonin was used to determine circulating levels and brain levels of calcitonin in the green iguana, iguana iguana. cross-reactivity between anti-human calcitonin antibodies and iguana plasma was demonstrated. removal of reptilian calcitonin from the plasma with affinity chromatography eliminated the cross-reactivity. assays on blood samples indicated normal circulating levels of calcitonin t ... | 1986 | 3940923 |
| exogenous gnrh overrides the endogenous annual reproductive rhythm in green iguanas, iguana iguana. | female green iguanas, iguana iguana, were caught in belize, central america (17 degrees n), in december, at the onset of seasonal gonadal activity. the animals were immediately transferred to san diego (32 degrees n). ovarian follicular development continued, with peak plasma hormone levels measured in january and february; 200 pg/ml for progesterone (p) and 800 pg/ml for total estrogens (et = estradiol [e2] + estrone [e1]). e2 was the predominant estrogen throughout the cycle. follicular atroph ... | 1987 | 3549969 |
| lung ventilation during walking and running in four species of lizards. | the relationship between locomotion and aspiration breathing was investigated in the lizards iguana iguana, ctenosaura similis, varanus exanthematicus and varanus salvator, and the quail coturnix coturnix. respiratory air-flow during walking and running on a 7.3 m track or on a treadmill was measured with a bidirectional flow meter attached to one nostril. in all four species of lizards, lung ventilation drops markedly during locomotion. tidal volume decreases as speed increases, often by more t ... | 1987 | 3666097 |
| [effects of environmental hypoxia on various hemodynamic, acid-base and electrolytic constants of iguana iguana (l., 1758)]. | 1987 | 3505150 | |
| hemoglobins of reptiles. the primary structures of the alpha i- and beta i-chains of common iguana (iguana iguana) hemoglobin. | the primary structures of alpha i- and beta i-chains from the hemoglobins of the common iguana (iguana iguana) are presented. the globin chains were separated on cm-cellulose in 8 m urea buffer. the amino-acid sequences were established by automatic edman degradation of the native chains, the tryptic peptides and a peptide obtained by cyanogen bromide cleavage. the sequences are compared with human hemoglobin. amino-acid replacements at positions critical for structure and function of the hemogl ... | 1988 | 3242545 |
| ventilatory action of the hypaxial muscles of the lizard iguana iguana: a function of slow muscle. | patterns of muscle activity during lung ventilation, patterns of innervation and some contractile properties were measured in the hypaxial muscles of green iguanas. electromyography shows that only four hypaxial muscles are involved in breathing. expiration is produced by two deep hypaxial muscles, the transversalis and the retrahentes costarum. inspiration is produced by the external and internal intercostal muscles. although the two intercostal muscles are the main agonists of inspiration, nei ... | 1989 | 2732666 |
| activity of the hypaxial muscles during walking in the lizard iguana iguana. | the role that the hypaxial muscles play in locomotion has been largely ignored by biologists. in tetrapods, there are at least three possibilities. first, the hypaxial muscles might bend the trunk laterally to increase stride length. second, they might stabilize the trunk against the horizontal, lateral and vertical components of the propulsive force. alternatively, they might not be involved in locomotion. this study evaluated these three hypotheses by analyzing the activity of the hypaxial mus ... | 1990 | 2146360 |
| seasonal variation of lipids in femoral gland secretions of male green iguanas (iguana iguana). | femoral gland secretions were collected from 21 captive adult male green iguanas (iguana iguana) in orotina, costa rica, and san diego, california, during the breeding (november) and nonbreeding (march) seasons. lipids were extracted with methylene chloride, weighed, separated by thin-layer chromatography, and analyzed by gas chromatography-mass spectrometry. free and esterified c14-c26 fatty acids, 5β-cholestan-3α-ol (epico-prostanol), cholest-5-en-3β-ol (cholesterol), cholest-5-en-24-methyl-3β ... | 1992 | 24253964 |
| ultrastructure of an iguana fast twitch denervated muscle. | this ultrastructural study was undertaken to investigate the morphological changes which occur in the fast twitch gastrocnemius muscle of the reptile iguana iguana after nerve section. it was found that initial degenerative alterations appeared in muscle fibers two weeks after denervation and progressed along the two months of the investigative period. they consisted of disorganization of contractile and sarcotubular elements and the appearance of autophagic vacuoles with mitochondrial debris. h ... | 1992 | 1343737 |
| an anatomical investigation of the muscles of the pelvic outlet in iguanas (iguanidae iguana iguana) and varanus (varanidae varanus (dumerillii)) with special reference to their nerve supply. | five pelvic halves from three male iguanas (iguanidae iguana iguana) and two pelvic halves from one male varanus (varanidae varanus (dumerillii)), were dissected in order to obtain detailed data on the relationship of the lumbosacral plexus and the muscles of the pelvic outlet. according to the positions of the passage of the metazonal nerves, the nerves can be divided into three groups: 1) the nerves passing dorsal to the caudofemoralis muscle, 2) the nerves passing between the caudofemoralis a ... | 1992 | 1616132 |
| chemical and behavioral studies of femoral gland secretions in iguanid lizards. | comparative studies on the chemistry and behavioral significance of femoral gland secretions in desert iguanas (dipsosaurus dorsalis) and green iguanas (iguana iguana) are reviewed. field and laboratory studies suggest that femoral gland secretions function in conspecific recognition and range marking. in desert iguanas, secretions are of low volatility and may be detected initially using long-range ultraviolet visual cues. in contrast, green iguana secretions contain a diversity of volatile lip ... | 1993 | 8477348 |
| optimal foraging of a herbivorous lizard, the green iguana in a seasonal environment. | food selection was studied in free living green iguanas (iguana iguana) throughout the year in a semiarid environment, curaçao (netherlands antilles). food intake was determined by direct observations and converted into biomass intake. comparison between intake and biomass availability of the various food items revealed that the lizards were selective, and that changes in seasonal food availability led to periodic switching of food plants. the extent to which nutrient constraints determine iguan ... | 1993 | 28312949 |
| differential resource use, growth, and the ontogeny of social relationships in the green iguana. | growth rates, resource use, and ontogeny of behavior patterns were examined in captive groups of juvenile green iguanas (iguana iguana). four groups were housed in large arenas where supplemental heat and perch sites were limited, whereas two control groups were housed in similar arenas without limited resources. growth, frequency and types of displays, behavioral interactions, and the use of resources were monitored. by 35-70 days of age, male hatchlings in arenas with limited resources could b ... | 1993 | 8434073 |
| growth of juvenile green iguanas (iguana iguana) fed four diets. | wild green iguanas consume a primarily folivorous diet. as pets in captivity, they suffer high mortality and malnutrition. nutrient requirements are not established. the purpose of this study was to compare growth in juvenile iguanas fed three commercial diets and a romaine-based diet. twelve nominally 4-wk-old iguanas were fed in a latin square design each of four diets for 8 wk, consisting of a 2-wk accommodation period and a 6-wk collection period. diets were analyzed at the beginning and end ... | 1994 | 7996255 |
| effects of chemical and visual exposure to adults on growth, hormones, and behavior of juvenile green iguanas. | for 1 year, groups of juvenile male green iguanas (iguana iguana) were housed such that one group was visually exposed to an adult female, a second group was both visually and chemically exposed to an adult female, a third group was visually exposed to an adult male, and a fourth group was both visually and chemically exposed to an adult male. juvenile males exposed to signals from adult males showed signs of chronic stress, including reduced growth rates, lower testosterone levels, higher corti ... | 1994 | 8047589 |
| [urolithiasis in a green iguana (iguana iguana)]. | in this report surgery on the urinary bladder of an iguana is documented. clinical signs, palpation and radiography failed to reveal the cause of the illness. during surgery a distended urinary bladder which contained an urolith 3 x 2 cm in size was found and removed. the urinary bladder was closed with a double-layered, non-perforating suture. according to the results of infrared spectroscopy, the urolith consisted of 70% dehydrated uric acid and 30% ammonium hydrogen urate. after removal of th ... | 1994 | 8209372 |
| the amino acid sequence of iguana (iguana iguana) pancreatic ribonuclease. | the pyrimidine-specific ribonuclease superfamily constitutes a group of homologous proteins so far found only in higher vertebrates. four separate families are found in mammals, which have resulted from gene duplications in mammalian ancestors. to learn more about the evolutionary history of this superfamily, the primary structure and other characteristics of the pancreatic enzyme from iguana (iguana iguana), a herbivorous lizard species belonging to the reptiles, have been determined. the polyp ... | 1994 | 8307028 |
| calcitonin gene-related peptide relaxes cholecystokinin-induced tension in iguana iguana gallbladder strips. | the presence of a calcitonin gene-related peptide (cgrp)-like material was demonstrated in the iguana, iguana iguana, gallbladder using immunocytochemistry. an intense reaction was observed in nerves located in the smooth muscle layers and associated blood vessels but no immunoreactive cell bodies were found. in vitro tension studies using gallbladder strips showed that chicken cgrp was more potent in relaxing cholecystokinin-induced tension than either human or rat cgrp. the use of glibenclamid ... | 1994 | 7821775 |
| conservation of functionally important epitopes on myelin associated glycoprotein (mag). | phylogenetic conservation of protein domains often points to functionally important regions. as a step toward mapping these sites on myelin associated glycoprotein (mag) we have determined the species distribution of epitopes recognized by a panel of anti-mag antibodies (ab). monoclonal antibodies (mab) b11f7, gens3 and 28 recognized mag only in mammalian species. however, the mab 513 which inhibits mag binding recognized a conformational epitope in a wider distribution of species including, hum ... | 1995 | 7584863 |
| circadian rhythm of body temperature in an ectotherm (iguana iguana). | ectothermic animals regulate their body temperatures primarily by behavioral adjustment in relation to the thermal characteristics of the environment. several studies have shown that some vertebrate ectotherms may show a daily pattern of body temperature selection when given a choice of environmental temperature. the pattern of body temperature selection free-runs when the animals are kept in constant darkness, demonstrating the existence of circadian regulation. to test whether there might also ... | 1995 | 7488762 |
| haematological and biochemical values of 10 green iguanas (iguana iguana). | ten clinically healthy green iguanas (iguana iguana) imported from south america were examined, and haematological and biochemical measurements were made on samples of blood. this paper describes the methods of blood sampling, handling and laboratory analysis, and presents the results as a set of normal blood ranges for the green iguana. | 1996 | 8686152 |
| axial muscle function during lizard locomotion | it was recently reported that the epaxial muscles of a lizard, varanus salvator, function to stabilize the trunk during locomotion, and it was suggested that this stabilizing role may be a shared derived feature of amniotes. this result was unexpected because it had previously been assumed that the epaxial muscles of lizards function to produce lateral bending during locomotion and that only in mammals and birds were the epaxial muscles active in stabilizing the trunk. these results and the infe ... | 1996 | 9320426 |
| the pineal complex and melatonin affect the expression of the daily rhythm of behavioral thermoregulation in the green iguana. | daily variation in the body temperature of the green iguana (iguana iguana) was studied by telemetry in laboratory photo-thermal enclosures under a 12light:12dark (l:d) photoperiod. the lizards showed robust daily rhythms of thermoregulation maintaining their body temperatures (tb) at higher levels during the day than during the night. some animals maintained rhythmicity when kept in constant darkness. on light:dark cycles parietalectomy produced only a transient increase of median tb in the fir ... | 1996 | 8965257 |
| renal vasculature and uriniferous tubules in the common iguana. | the pattern of vascular supply and the histology of uriniferous tubules of the kidney in the common iguana were studied by light microscopy of semithin sections and by scanning electron microscopy of microcorrosion casts. the corrosion casts showed a strongly developed renal portal system that forms an extensive capillary network throughout the kidney. glomeruli are numerous and have a capillary pattern consisting of three to six loose coils of capillaries intercalated between afferent and effer ... | 1996 | 29852652 |
| light perception in the vertebrate brain: an ultrastructural analysis of opsin- and vasoactive intestinal polypeptide-immunoreactive neurons in iguanid lizards. | recent biochemical and immunocytochemical evidence indicates that a population of circadian and reproductive rhythm-entraining photoreceptors lies in the basal diencephalon of iguanid lizards. here, we report the results of correlated light and electron microscopy of opsin-immunoreactive cells in the basal brain, and we discuss their ultrastructural relationship to known photoreceptors. cerebrospinal fluid (csf)-contacting bipolar neurons in the lizards anolis carolinensis and iguana iguana were ... | 1996 | 8731227 |
| ventilation and gas exchange in lizards during treadmill exercise. | the extent to which lizards ventilate their lungs during locomotion is controversial. direct measurements of airflow across the nostrils suggest a progressive reduction in tidal volume and minute ventilation with increased running speed, while other studies have demonstrated that arterial po2 remains constant during exercise. to resolve these conflicting findings, we measured minute ventilation and gas exchange rate in five specimens of varanus exanthematicus and five specimens of iguana iguana ... | 1997 | 9359369 |
| dietary fiber influences nutrient utilization, growth and dry matter intake of green iguanas (iguana iguana). | herbivory is an uncommon feeding strategy in lizards. appropriate diet formulations for captive lizards should be based on performance measures, yet few data are available on the effect of plant fiber on food intake, nutrient utilization and growth of captive herbivorous lizards. this study was conducted to determine the effect of three levels of dietary fiber on dry matter intake, nutrient and energy metabolizability and growth rate of the green iguana (iguana iguana). twenty-one captive iguana ... | 1997 | 9237944 |
| a new look at relationships between size at maturity and asymptotic size. | comparative studies have revealed positive correlations between size at maturity and asymptotic size in several taxa with asymptotic growth after maturity. using a simple growth model, we show that positive correlations between size at maturity and asymptotic size are predicted for different individuals in the same species if growth costs of reproduction are inversely related to size at maturity. several processes might lead to higher growth costs of reproduction for smaller individuals; these i ... | 1998 | 18811453 |
| multioscillatory circadian organization in a vertebrate, iguana iguana. | the lizard iguana iguana when kept in constant ambient temperature displays endogenously generated circadian rhythms of body temperature and locomotor activity. although surgical removal of the parietal eye has only slight effects on overt circadian rhythmicity, subsequent pinealectomy completely abolishes the rhythm of body temperature. however, the rhythm of locomotor activity is only slightly affected by parietalectomy plus pinealectomy. our results demonstrate that the pineal complex is cent ... | 1998 | 9437030 |
| cardiopulmonary and anesthetic effects of propofol administered intraosseously to green iguanas. | to determine cardiopulmonary effects of intraosseous administration of propofol in green iguanas (iguana iguana). | 1998 | 9426788 |
| aural polyp associated with cryptosporidiosis in an iguana (iguana iguana). | 1998 | 9576347 | |
| growth and morphometrics of green iguanas (iguana iguana) fed four levels of dietary protein. | 1998 | 9868210 | |
| behavior of juvenile lizards (iguana iguana) in a conflict between temperature regulation and palatable food. | juvenile green iguanas were placed in a situation of conflict between two motivations: a thermoregulatory drive and the attraction of a palatable bait. to be able to reach the bait (lettuce), they had to leave a warm refuge, provided with standard food, and venture into a cold environment. in experiment 1 the time interval between sessions with bait, ranging from 1 to 8 days, had no effect on the duration of stay on the bait. this result shows that the lettuce was not a necessary food, deprivati ... | 1998 | 9807010 |
| simultaneous occurrence of salmonella arizonae in a sulfur crested cockatoo (cacatua galerita galerita) and iguanas. | a case of fatal hepatitis in a captive sulfur crested cockatoo (cacatua galerita galerita) in which salmonella arizonae was microbiologically and immunohistochemically detected is described. the death of the cockatoo was closely related to the arrival of a group of 10 green iguanas (iguana iguana) at a pet shop, and no previous clinical signs were observed in the cockatoo. the most important lesion observed at necropsy of the cockatoo was a multifocal necrotic hepatitis. salmonella arizonae was ... | 1998 | 9876856 |
| prevalence of fecal shedding of salmonella organisms among captive green iguanas and potential public health implications. | to determine prevalence of fecal shedding of salmonella organisms among captive green iguanas (iguana iguana). | 1998 | 9656023 |
| topographic position of forelimb motoneuron pools is conserved in vertebrate evolution. | the neuromotor conservatism hypothesis predicts that neuromotor patterns in homologous tetrapod muscles are conserved evolutionarily despite the musculoskeletal modifications of vertebrate limbs. a complete description of the anatomical organization of the neurons innervating homologous limb muscles is a prerequisite to any test of the neuromotor conservatism hypothesis. this study uses the retrograde neuronal tracer wga-hrp to selectively label the motor neuron pools of seven homologous forelim ... | 1998 | 9491275 |
| paramyxoviral and reoviral infections of iguanas on honduran islands. | thirty-five free-ranging healthy spiny-tailed iguanas (31 ctenosaura bakeri, 4 c. similis) and 14 green iguanas (iguana iguana rhinolopha) were caught and held in captivity for 2 days. blood was collected from all animals and their sera were evaluated for antibody titres against reptilian reoviruses, reptilian paramyxoviruses, and avian paramyxovirus-1 (pmv-1). cloacal and pharyngeal swabs also were collected and examined for viral content by incubation on chicken embryo fibroblasts (cef) and te ... | 1998 | 9476223 |
| population genetic structure of a three-host tick, amblyomma dissimile, in eastern venezuela. | patterns of genetic variation for the tick amblyomma dissimile were analyzed from a total of 200 ticks collected on 12 toads (bufo marinus), 14 snakes (boa constrictor), and 8 lizards (iguana iguana) at 11 localities. the analyses were performed on electrophoretic data from 8 isozyme loci. mean heterozygosity per locus was 6% (+/-3.1) per population. differences in allelic frequencies among ticks from different individual hosts were the major source of genetic variability in this study. host spe ... | 1998 | 9920303 |
| in vivo locomotor strain in the hindlimb bones of alligator mississippiensis and iguana iguana: implications for the evolution of limb bone safety factor and non-sprawling limb posture | limb postures of terrestrial tetrapods span a continuum from sprawling to fully upright; however, most experimental investigations of locomotor mechanics have focused on mammals and ground-dwelling birds that employ parasagittal limb kinematics, leaving much of the diversity of tetrapod locomotor mechanics unexplored. this study reports measurements of in vivo locomotor strain from the limb bones of lizard (iguana iguana) and crocodilian (alligator mississippiensis) species, animals from previou ... | 1999 | 10101104 |
| effects of hemolysis on plasma electrolyte and chemistry values in the common green iguana (iguana iguana). | hemolysis of serum and plasma samples is a common problem in veterinary diagnostic laboratories. we measured the effects of hemolysis on nine plasma analytes in 10 clinically normal common green iguanas (iguana iguana). blood samples with moderate and marked hemolysis were produced from each iguana by freezing, centrifuging, and decanting plasma from a portion of each blood sample, and combining the nonhemolyzed plasma with different amounts of hemolyzed plasma from the same individual. moderate ... | 1999 | 10572866 |
| characterization of the renal portal system of the common green iguana (iguana iguana) by digital subtraction imaging. | digital subtraction angiography was used to map the venous blood flow from the pelvic limb and the tail in the common green iguana (iguana iguana). the majority of blood returning from the pelvic limb bypassed the kidney and entered the general circulation, whereas venous blood flow from the tail entered the renal portal circulation. no evidence was found of a renal portal valve. | 1999 | 10484138 |
| phylogeography of the caribbean rock iguana (cyclura): implications for conservation and insights on the biogeographic history of the west indies. | the caribbean rock iguana, cyclura, has had an unstable intrageneric taxonomy and an unclear phylogenetic position within the family iguanidae. we use mtdna sequence data to address these issues and explore the phylogeographic history of the genus. nd4 to leucine trna sequence data were collected from multiple individuals of each of the eight species of cyclura (including 15 of 16 subspecies) and from four localities of iguana iguana (representative of this species' broad geographic range). this ... | 2000 | 11083940 |