| 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 |
| 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 |
| malaria parasites of the "borriguerro" lizard, ameiva ameiva (sauria: teiidae) in panama. | | 1973 | 4709675 |
| experimental infections in venezuelan lizards by trypanosoma cruzi. | virulent trypomastigotes of the y strain of trypanosoma cruzi were administered to tropidurus hispidus, ameiva ameiva, cnemidophorus lemniscatus, polychrus marmoratus, and phyllodactylus ventralis (sauria). intraperitoneal and subcutaneous inoculations of lizards with mouse blood or with feces of infected rhodnius prolixus (reduviidae, triatominae), as well as forced ingestion of triturated rhodnius, produced no parasitaemias detectable either directly or by xenodiagnosis, while control mice bec ... | 1981 | 6115559 |
| hepatic cholesteryl ester metabolism in reptiles. a comparative study of three species of brazilian lizards. | cholesterol esterase (cease) and acylcoenzyme a: cholesterol acyltransferase (acatase) activities were identified in liver cytoplasmatic extracts from tropidurus torquatos (iguanidae), ameiva ameiva (teiidae) and hemidactylus mabouia (gekkonidae). optimum conditions were established to measure the hydrolytic activity of cease and esterifying activities of cease and acatase. the activities of both enzymes were generally similar in all three species of reptiles, and did not differ greatly from val ... | 1984 | 6518764 |
| some coccidia from the gall-bladder and intestine of the teiid lizard ameiva ameiva ameiva and the gecko hemidactylus mabouia in north brazil. | a study has been made of the endogenous development of two eimeriid coccidia in the teiid lizard ameiva ameiva, which were previously considered by carini (1932) to be conspecific with eimeria rochalimai and eimeria boveroi carini & pinto, 1926, described in the gecko hemidactylus mabouia. it has been shown that this is not so, and the two parasites of a. ameiva have been named choleoeimeria carinii n. sp. and acroeimeria pintoi n. sp. a description is also given of the endogenous stages of the ... | 1999 | 10416189 |
| fine structure of the epicytoplasmic eimerid coccidium acroeimeria pintoi lainson & paperna, 1999, a gut parasite of the lizard ameiva ameiva in north brazil. | an account is given of the fine structure of acroeimerio pintoi, an epicytoplasmic coccidium infecting the small intestine of the teiid lizard ameiva ameiva in north brazil. the merozoile becomes encircled by outgrowths of the host-cell wall which then merge to form a parasitophorous sack in which the parasite continues to develop when this bulges out above the epithelium surface. the account includes a description of merozoites, young meronts and young and mature macrogamonts. the parasitophoro ... | 1999 | 10633508 |
| thubunaea dactyluris sensu fabio and rolas, a synonym of physalopteroides venancioi (spirurida, physalopteridae). | specimens of thubunaea dactyluris karve, 1938 sensu fabio and rolas, 1974 from the lizard ameiva ameiva of brazil and types of physalopteroides venancioi (lent, freitas, and proença, 1946) from the toad bufo paracnemis of paraguay were re-examined. the male caudal papillae and the tooth arrangement demonstrated that these specimens were conspecific and are all assigned to p. venancioi. the occurrence of physalopteroides dactyluris (karve, 1938), a nematode parasite of lizards of india and turkme ... | 2000 | 11128504 |
| the life-cycle and ultrastructure of sarcocystis ameivamastigodryasi n. sp., in the lizard ameiva ameiva (teiidae) and the snake mastigodryas bifossatus (colubridae). | sarcocysts in muscles of the teiid lizard ameiva ameiva from north brazil were fed to the colubrid snake mastigodryas bifossatus, the faeces of which had been shown to be devoid of coccidial oocysts or sporocysts. when necropsied 16 days later the snake was shown to have developed a massive intestinal infection of sarcocystis. mature sporocysts from another, naturally infected m. bifossatus were fed to juvenile specimens of a. ameiva in which no sarcocysts could be detected in tail muscle biopsi ... | 2000 | 11147034 |
| light microscopical structure and ultrastructure of a besnoitia sp. in the naturally infected lizard ameiva ameiva (teiidae) from north brazil, and in experimentally infected mice. | a besnoitia species of the teiid lizard ameiva ameiva (l.), from north brazil was established in laboratory mice and hamster by the intraperitoneal inoculation of bradyzoites in the tissue cysts. in the lizards all the cyst wall layers were closely apposed. in the mice the layers of the wall were distinguishable, and ultrastructurally the inner cytoplasmic layer contained either a tight network of endoplasmic reticulum or packed mitochondria or both. these components were less frequent or sparse ... | 2001 | 11578088 |
| intestinal coccidia (apicomplexa: eimeriidae) of brazilian lizards. eimeria carmelinoi n.sp., from kentropyx calcarata and acroeimeria paraensis n.sp. from cnemidophorus lemniscatus lemniscatus (lacertilia: teiidae). | eimeria carmelinoi n.sp., is described in the teiid lizard kentropyx calcarata spix, 1825 from north brazil. oocysts subspherical to spherical, averaging 21.25 x 20.15 micro m. oocyst wall smooth, colourless and devoid of striae or micropyle. no polar body or conspicuous oocystic residuum, but frequently a small number of fine granules in brownian movement. sporocysts, averaging 10.1 x 9 microm, are without a stieda body. endogenous stages characteristic of the genus: intra-cytoplasmic, within t ... | 2002 | 12016449 |
| rediscovery and redescription of plasmodium pifanoi and description of two additional plasmodium parasites of venezuelan lizards. | plasmodium pifanoi scorza and dagert b., known only from the type host, ameiva ameiva, is redescribed from kentropyx calcarata collected in territorio amazonas, venezuela. schizonts, 6.2 x 4.5 (4-8 x 3-6), produce on average 11.9 (7-16) merozoites. gametocytes average 12.4 x 6.0 (8-16 x 4-10), with length x width (lw) 72.9 (52-112) and l/w 2.18 (1.1-3.3), and always contain 1-5 prominent vacuoles. macrogametocytes in active infection are longer than microgametocytes, with greater lw, but gametoc ... | 2003 | 12760655 |
| the effects of early experience on subsequent feeding responses in the tegu, tupinambis teguixin (squamata : teiidae). | the purpose of this study was to assess the effects of early feeding experiences on subsequent responses to prey in the tegu, tupinambis teguixin. five-day old lizards were exposed to the odors of various prey and control substances on cotton-tipped applicators with the tongue-flick attack score (tfas) chosen as the dependent variable. each lizard was exposed to four stimuli: two controls (deionised water and cologne), and extracts from a mouse mus musculus, and a lizard ameiva ameiva, in a repe ... | 2003 | 12974408 |
| haematozoan parasites of the lizard ameiva ameiva (teiidae) from amazonian brazil: a preliminary note. | three different haematozoan parasites are described in the blood of the teiid lizard ameiva ameiva linn. from north brazil: one in the monocytes and the other two in erythrocytes. the leucocytic parasite is probably a species of lainsonia landau, 1973 (lankesterellidae) as suggested by the presence of sporogonic stages in the internal organs, morphology of the blood forms (sporozoites), and their survival and accumulation in macrophages of the liver. one of the erythrocytic parasites produces en ... | 2003 | 15049092 |
| natural and experimental infection of the lizard ameiva ameiva with hemolivia stellata (adeleina: haemogregarinidae) of the toad bufo marinus. | developmental stages of a haemogregarine in erythrocytes of the lizard ameiva ameiva (teiidae), from pará state, north brazil, were shown to be those of hemolivia by the nature of the parasite's sporogonic cycle in the tick amblyomma rotondatum. the type species, hemolivia stellata petit et al., 1990 was described in the giant toad bufo marinus and the tick amblyomma rotondatum, also from pará state, and in view of the fact that a. ameiva and bufo marinus share the same habitat and are both comm ... | 2007 | 18225421 |
| hematological parameters of ameiva ameiva (reptilia: teiidae) naturally infected with hemogregarine: confirmation of monocytosis. | little is known on how hematozoan infection changes reptile hematology. the lizard ameiva ameiva is widely distributed in the americas and is infected by hematozoan parasites. previous studies on this lizard have shown that the parasite of monocytes causes a variety of ultrastructural changes in infected host cells. the present study reports that this infection does not cause any change to the erythrocytic values. however, a marked increase in the number of leukocytes (especially monocytes) was ... | 2010 | 20409641 |
| plasmodium carmelinoi n. sp. (haemosporida: plasmodiidae) of the lizard ameiva ameiva (squamata: teiidae) in amazonian brazil. | plasmodium carmelinoi n. sp. is described in the teiid lizard ameiva ameiva from north brazil. following entry of the merozoites into the erythrocyte, the young, uninucleated trophozoites are at first tear-shaped and already possess a large vacuole: with growth, they may assume an irregular shape, but eventually become spherical or broadly ovoid. the vacuole reduces the cytoplasm of the parasite to a narrow peripheral band in which nuclear division produces a schizont with 8-12 nuclei. at first ... | 2010 | 20597439 |
| a first record of amblyomma dissimile (acari: ixodidae) parasitizing the lizard ameiva ameiva (teiidae) in brazil. | a non-engorged adult female amblyomma dissimile and two amblyomma sp. larvae were found parasitizing the lizard ameiva ameiva in the municipality of chapadinha, state of maranhão. this is the first record in the state of maranhão and fills a gap in the distribution of a. dissimile in brazil. the lizard a. ameiva represents a new host for a. dissimile, and also the first record of this tick species infesting lizards of the family teiidae in brazil. | 2010 | 21184707 |
| heterotopic synaptic bodies in the auditory hair cells of adult lizards. | the auditory hair cells of adults of eight species of lizards (three gekkonids: coleonyx variegatus, gekko gecko, and cosymbotus platyurus; two teiids: ameiva ameiva and cnemidophorus tigris; one anguid: celestus costatus; one lacertid: podarcis (lacerta) sicula; and one iguanid: crotaphytus wislizeni) were studied by transmission electron microscopy. heterotopic synaptic bodies were found in some of the auditory hair cells of all of the above species, occurring frequently in the gekkonids but i ... | 2010 | 2820267 |
| new host records for amblyomma rotundatum (acari: ixodidae) from grussaí restinga, rio de janeiro, brazil. | amblyomma rotundatum koch is a parthenogenetic tick usually associated with reptiles and amphibians. however, relatively few studies on occurrences of ticks in wild reptile populations in brazil have been produced. the aim of this study was to analyze the presence of ticks associated with reptile species in the grussaí restinga, in the municipality of são joão da barra, state of rio de janeiro, brazil. between december 2010 and january 2011, 131 individuals belonging to nine species of reptiles ... | 2012 | 23070450 |
| catalogue of distribution of lizards (reptilia: squamata) from the brazilian amazonia. iii. anguidae, scincidae, teiidae. | we present distribution data of all anguidae, scincidae, and teiidae lizards known from the brazilian amazonia, totaling 29 species-level taxa, belonging to 14 genera. this represents 11 more species-level taxa than previously reported for these families in this area. data were based on literature and 46,806 specimens deposited in three north american and eight brazilian museums, including the main collections harboring amazonian material. most species (~55%) are endemic to amazonia. except for ... | 2016 | 27988555 |
| differential repetitive dna composition in the centromeric region of chromosomes of amazonian lizard species in the family teiidae. | differences in heterochromatin distribution patterns and its composition were observed in amazonian teiid species. studies have shown repetitive dna harbors heterochromatic blocks which are located in centromeric and telomeric regions in ameiva ameiva (linnaeus, 1758), kentropyx calcarata (spix, 1825), kentropyx pelviceps (cope, 1868), and tupinambis teguixin (linnaeus, 1758). in cnemidophorus sp.1, repetitive dna has multiple signals along all chromosomes. the aim of this study was to character ... | 2016 | 27551343 |
| acanthocephala larvae parasitizing ameiva ameiva ameiva (linnaeus, 1758) (squamata: teiidae). | knowledge concerning the taxonomy and biology of species of acanthocephala, helminth parasites of the helminth species of the phylum acanthocephala, parasites of lizards in brazilian amazonia, is still insufficient, but reports of acanthocephala in reptiles are becoming increasingly common in the literature. cystacanth-stage acanthocephalan larvae have been found in the visceral peritoneum during necropsy of ameiva ameiva ameivalizards from the "osvaldo rodrigues da cunha" herpetology collection ... | 2016 | 27027551 |
| acanthocephala larvae parasitizing ameiva ameiva ameiva (linnaeus, 1758) (squamata: teiidae). | knowledge concerning the taxonomy and biology of species of acanthocephala, helminth parasites of the helminth species of the phylum acanthocephala, parasites of lizards in brazilian amazonia, is still insufficient, but reports of acanthocephala in reptiles are becoming increasingly common in the literature. cystacanth-stage acanthocephalan larvae have been found in the visceral peritoneum during necropsy of ameiva ameiva ameivalizards from the "osvaldo rodrigues da cunha" herpetology collection ... | 2016 | 26982559 |
| the organization of repetitive dna in the genomes of amazonian lizard species in the family teiidae. | repetitive dna is the largest fraction of the eukaryote genome and comprises tandem and dispersed sequences. it presents variations in relation to its composition, number of copies, distribution, dynamics, and genome organization, and participates in the evolutionary diversification of different vertebrate species. repetitive sequences are usually located in the heterochromatin of centromeric and telomeric regions of chromosomes, contributing to chromosomal structures. therefore, the aim of this ... | 2015 | 26867142 |
| cytogenetic analyses of five amazon lizard species of the subfamilies teiinae and tupinambinae and review of karyotyped diversity the family teiidae. | lizards of the family teiidae (infraorder scincomorpha) were formerly known as macroteiidae. there are 13 species of such lizards in the amazon, in the genera ameiva (meyer, 1795), cnemidophorus (wagler, 1830), crocodilurus (spix, 1825), dracaena (daudin, 1801), kentropyx (spix, 1825) and tupinambis (daudin, 1802). cytogenetic studies of this group are restricted to karyotype macrostructure. here we give a compilation of cytogenetic data of the family teiidae, including classic and molecular cyt ... | 2015 | 26753079 |
| herpetofauna of núcleo experimental de iguaba grande, rio de janeiro state, brazil. | the atlantic rain forest, which is considered the second largest pluvial forest in the american continent, has had an estimated 93% of its original area destroyed. although studies concerning the herpetofaunal diversity in this biome have been intensified in the past years, its diversity is still underestimated. the nucleo experimental de iguaba grande (neig) is included in an environmental protection area (apa de sapeatiba) in the iguaba grande municipality, rio de janeiro state, brazil (22º 51 ... | 2012 | 22990826 |
| divergent calcium signaling in rbcs from tropidurus torquatus (squamata--tropiduridae) strengthen classification in lizard evolution. | we have previously reported that a teiid lizard red blood cells (rbcs) such as ameiva ameiva and tupinambis merianae controls intracellular calcium levels by displaying multiple mechanisms. in these cells, calcium stores could be discharged not only by: thapsigargin, but also by the na+/h+ ionophore monensin, k+/h+ ionophore nigericin and the h+ pump inhibitor bafilomycin as well as ionomycin. moreover, these lizards possess a p2y-type purinoceptors that mobilize ca2+ from intracellular stores u ... | 2007 | 17716375 |
| morphology of the femoral glands in the lizard ameiva ameiva (teiidae) and their possible role in semiochemical dispersion. | many lizards have epidermal glands in the cloacal or femoral region with semiochemical function related to sexual behavior and/or territorial demarcation. externally, these glands are recognized as a row of pores, opening individually in the center of a modified scale. in many species the pores are used as systematic characters. they form a glandular cord or, in some species, a row of glandular beads below the dermis, and are connected to the exterior through the ducts, which continuously libera ... | 2007 | 17458886 |
| ecological release in lizard assemblages of neotropical savannas. | we compare lizard assemblages of cerrado and amazonian savannas to test the ecological release hypothesis, which predicts that niche dimensions and abundance should be greater in species inhabiting isolated habitat patches with low species richness (amazonian savannas and isolated cerrado patches) when compared with nonisolated areas in central cerrado with greater species richness. we calculated microhabitat and diet niche breadths with data from 14 isolated cerrado patches and amazon savanna a ... | 2007 | 17437128 |
| banding patterns and chromosomal evolution in five species of neotropical teiinae lizards (squamata: teiidae). | karyotypes of five species of south american teiid lizards from subfamily teiinae: ameiva ameiva, kentropyx calcarata, k. paulensis, k. vanzoi (2n = 50, all acrocentric), and cnemidophorus ocellifer (2n = 50, all biarmed), are herein described and compared on the basis of conventional and silver staining, and cbg and rbg banding patterns. meiotic data are also included. karyotypes of k. paulensis, k. vanzoi, and c. ocellifer are reported here for the first time. inter-generic variability in ag-n ... | 2007 | 17206461 |
| a new rhabdiasid nematode, chabirenia cayennensis n. g., n. sp., parasitic in the glands of the buccal mucosa of a south american saurian. | chabirenia cayennensis n. g., n. sp. (nematoda: rhabdiasidae) is described from the teiid lizard ameiva ameiva. a total of 139 worms were recovered, all females, from the mucous glands of the buccal cavity. the worm has a free-living phase in a homogonic life-cycle. infective larvae are enclosed in a sheath with chequered ornamentation and composed of two exuviae. the new genus is distinct from the five known genera of the family, pneumonema johnston, 1916, acanthorhabdias pereira, 1927, entomel ... | 2005 | 16167123 |
| cytochemical and functional characterization of blood and inflammatory cells from the lizard ameiva ameiva. | the fine structure and differential cell count of blood and coelomic exudate leukocytes were studied with the aim to identify granulocytes from ameiva ameiva, a lizard distributed in the tropical regions of the americas. blood leukocytes were separated with a percoll cushion and coelomic exudate cells were obtained 24 h after intracoelomic thioglycollate injection. in the blood, erythrocytes, monocytes, thrombocytes, lymphocytes, plasma cells and four types of granulocytes were identified based ... | 2005 | 15936356 |
| activation of a p2y4-like purinoceptor triggers an increase in cytosolic [ca2+] in the red blood cells of the lizard ameiva ameiva (squamata, teiidae). | an increasing number of pathophysiological roles for purinoceptors are emerging, some of which have therapeutic potential. erythrocytes are an important source of purines, which can be released under physiological and physiopathological conditions, acting on purinergic receptors associated with the same cell or with neighboring cells. few studies have been conducted on lizards, and have been limited to atp agonist itself. we have previously shown that the red blood cells (rbcs) of the lizard ame ... | 2005 | 15665982 |
| blood monocyte alteration caused by a hematozoan infection in the lizard ameiva ameiva (reptilia: teiidae). | although hematozoa have been described from many different host species, little is known about the infection and its relationship to the physiology of the host. we studied a hematozoan, regarded as a species of lainsonia landau, 1973 (lankestereliidae), which infects the monocytes of the lizard ameiva ameiva. the infected animals show a huge monocytosis and morphological changes in the monocytes. ultrastructurally, the parasite has an apical complex, dense bodies, electron lucent structures, pla ... | 2004 | 15243797 |
| a comparative ultrastructural study of spermatozoa of the teiid lizards cnemidophorus gularis gularis, cnemidophorus ocellifer, and kentropyx altamazonica (reptilia, squamata, teiidae). | the ultrastructure of the spermatozoa of cnemidophorus gularis gularis, cnemidophorus ocellifer, and kentropyx altamazonica is described for the first time. mature spermatozoa of cnemidophorus spp. and k. altamazonica differ in the occurrence of a perforatorial base plate, the enlargement of axonemal fibers 3 and 8, and shape of mitochondria. the comparisons of the ultrastructure sperm of cnemidophorus spp. and k. altamazonica with ameiva ameiva [j. morphol. (2002) in press] suggest that ameiva ... | 2002 | 12182806 |
| ultrastructure of spermatozoa of the lizard ameiva ameiva, with considerations on polymorphism within the family teiidae (squamata). | a detailed description of sperm ultrastructure of the lizard ameiva ameiva (teiidae) is provided. mature spermatozoa are characterized by: a depressed acrosome at the anterior portion; a unilateral ridge at the anterolateral portion; an acrosome vesicle divided into cortex and medulla; medulla divided into two regions with different electron-densities; paracrystalline subacrosomal material with radial organization in transverse section; a pointed prenuclear perforatorium; a stopper-like perforat ... | 2002 | 12125065 |
| red blood cells of the lizards ameiva ameiva (squamata, teiidae) display multiple mechanisms to control cytosolic calcium. | we have previously reported that lizard red blood cells control their cytosolic calcium concentration by sequestering calcium ions in pools, which could be discharged by thapsigargin, by the na+/h+ ionophore, monensin, by the k+/h+ ionophore, nigericin and by the proton pump inhibitor, bafilomycin a1 [1]. we have now demonstrated, with the aid of confocal microscopy, the presence in these cells of organelles, which accumulate the dye acridine orange and are thus by inference the sites of proton ... | 2002 | 11969248 |
| signal transduction in red blood cells of the lizards ameiva ameiva and tupinambis merianae (squamata, teiidae). | the fluorescent calcium probe, fluo-3, am was used to measure the intracellular calcium concentration in red blood cells (rbcs) of the teiid lizards ameiva ameiva and tupinambis merianae. the cytosolic [ca2+] is maintained around 20 nm and the cells contain membrane-bound ca2+ pools. one pool appears to be identifiable with the endoplasmic reticulum (er) inasmuch as addition of the sarco-endoplasmic reticulum ca2+ atpase, serca, inhibitor thapsigargin induces an increase in cytosolic [ca2+ both ... | 2001 | 11352509 |
| niche segregation among sympatric amazonian teiid lizards. | we examined standard niche axes (time, place, and food) for three sympatric teiid lizards in the amazon rain forest. activity times during the day were similar among species. ameiva ameiva were in more open microhabitats and had higher body temperatures compared with the two species of kentropyx. microhabitat overlaps were low and not significantly different from simulations based on monte carlo analysis. grasshoppers, crickets, and spiders were important in the diets of all three species and ma ... | 2000 | 28308292 |
| re-descriptions of isospora ameivae carini, 1932 in the teiid lizard ameiva ameiva and isospora hemidactyli carini, 1936 in the gecko hemidactylus mabouia, with particular reference to their endogenous stages. | redescriptions are given of the mature oocysts of isospora ameivae carini, 1932, from the teiid lizard ameiva ameiva, and isospora hemidactyli carini,1936 from the gecko hemidactylus mabouia, in north brazil. the endogenous stages of the two parasites in the small intestine are described. those of i. ameivae are intracytoplasmic, whereas those of i. hemidactyli are intranuclear. | 2006 | 10446001 |
| sexual selection versus alternative causes of sexual dimorphism in teiid lizards. | the presence and extent of sexual dimorphisms in body form (size and shape) of adult macroteiid lizards were investigated. males were significantly larger than females in the temperate species, cnemidophorus tigris, and in the tropical species, ameiva ameiva and c. ocellifer. young adult c. tigris males grew faster than young adult females within and between reproductive seasons. adult males of all species had larger heads than adult females of the same body size; this difference increased with ... | 1990 | 28312746 |
| auditory hair cell innervational patterns in lizards. | the pattern of afferent and efferent innervation of two to four unidirectional (uhc) and two to nine bidirectional (bhc) hair cells of five different types of lizard auditory papillae was determined by reconstruction of serial tem sections. the species studies were crotaphytus wislizeni (iguanid), podarcis (lacerta) sicula and p. muralis (lacertids), ameiva ameiva (teiid), coleonyx variegatus (gekkonid), and mabuya multifasciata (scincid). the main object was to determine in which species and in ... | 1988 | 3385019 |
| concentrations of ketone bodies in the blood of the green lizard ameiva ameiva (teiidae) in different physiological situations. | 1. the concentrations of acetoacetate and 3-hydroxybutyrate have been determined in the blood of the green lizard ameiva ameiva (teiidae) in fed animals and in animals starved for periods from one week to about four months. 2. the concentrations of acetoacetate are low and unaltered in fed and starved animals, being in the range from 0.014 to 0.018 mm. 3. the concentrations of 3-hydroxybutyrate are high: 2.67 mm, in fed animals, falling during starvation down to 0.26 mm. 4. the 3-hydroxybutyrate ... | 1988 | 2896561 |
| the salivary glands of ameiva ameiva (teiidae, lacertilia). a morphological, morphometric and histochemical study. | the authors studied morphological, morphometric, and histochemically the mucosubstances and proteins in the salivary glands of the lizard ameiva. based on the results, the authors concluded: 1. the labial salivary gland is formed by small mucous and mucoserous glands; the sublingual gland by mucoserous cells. 2. mucous cells show neutral and sulphated mucosubstances and sialic acid. mucoserous cells of the labial gland show neutral mucosubstance, sialic acid, hyaluronic acid and protein radicals ... | 1982 | 7072972 |
| nematode parasites of teiid lizards from the brazilian amazon rainforest. | this study presents the helminth composition and parameters of infection by several species of nematodes in teiid lizards, ameiva a. ameiva (linnaeus, 1758), cnemidophorus cryptus cole & dessauer, 1993, and kentropyx calcarata spix, 1825 from the brazilian amazonian rainforest. the lizard populations we studied were parasitized by six species of nemata, including: spinicauda spinicauda (olfers, 1919), parapharyngodon alvarengai freitas, 1957, physaloptera sp. (adults), physaloptera sp. (larvae), ... | 2016 | 27902893 |
| the evolutionary history of parthenogenetic cnemidophorus lemniscatus (sauria, teiidae). i. evidence for a hybrid origin. | chromosomes and allozymes were studied from chromosomally distinct unisexual (races b and c) and bisexual (races d and e) populations of the teiid lizard cnemidophorus lemniscatus, and from selected outgroup taxa (c. murinus, c. nigricolor, ameiva ameiva, and a. auberi). karyotyping confirmed the racial identity of individuals and showed that the chromosomal composition of populations at specific localities has remained the same for 20 years. all individuals of both unisexual populations were he ... | 1990 | 28569029 |
| effects of brodifacoum and diphacinone exposure on four species of reptiles: tissue residue levels and survivorship. | anticoagulant rodenticides are used worldwide to control pest rodent species. however, the risks posed to non-target reptiles have not been well characterized. in this study, 46 giant ameivas (ameiva ameiva), 39 boa constrictors (boa constrictor), 33 wood turtles (rhinoclemmys pulcherrima), and 47 green iguanas (iguana iguana) were orally dosed with one of two levels of either diphacinone or brodifacoum anticoagulant in propylene glycol solutions. dosages were derived using daily food intake (df ... | 2020 | 31858711 |
| redescription of hepatozoon ameivae (carini and rudolph, 1912) from the lizard ameiva ameiva (linnaeus, 1758). | blood samples from 72 ameiva ameiva lizards from central amazonian upland forests were collected, and thin smears of 40 (55.5%) animals were positive for gamonts of hepatozoon with a mean level of intensity of infection of 14 parasites/2000 blood erythrocytes (0.73%). the gametocytes were found attached with host cells' nuclei, and their dimensions were 14.28 ± 1.05 μm in length and 4.50 ± 0.80 μm in width. phylogenetic analyses of the 18s rrna gene showed that the new sequences obtained from a. ... | 2020 | 32529297 |
| molecular screening of plasmodium (haemosporidia: plasmodiidae) parasites from reptiles in brazil. | hemosporidians are a monophyletic group of protozoan parasites infecting all terrestrial vertebrate orders. although plasmodium is the most studied genus within the haemosporidia, this research effort is heavily biased toward mammal and bird hosts. we screened 205 specimens of at least 18 reptile species from brazil using a partial mitochondrial cytochrome b gene marker. positive samples were sequenced and included in a phylogenetic assessment. four positive pcr products matched others identifie ... | 2019 | 31815596 |
| climate change effects on population dynamics of three species of amazonian lizards. | the scarcity of data on natural history and ecology of lizards still limits the understanding of population dynamics for many species. we attempt to evaluate possible effects of climate change on the population dynamics of three lizard species (ameiva ameiva, gonatodes humeralis and norops fuscoauratus) in two amazonian localities (caxiuanã national forest and ducke reserve). we calculated a tolerance index combining environmental thermal adequacy with the b-d model, which consider survival and ... | 2019 | 31319170 |
| raillietiella mottae (pentastomida: raillietiellidae) infecting ameiva ameiva (squamata: teiidae) in araripe plateau, northeast brazil. | we investigated the infection by pulmonary parasites in the lizard ameiva ameiva (teiidae) inhabiting the environmental protection area of araripe (apa-araripe). a total of 45 specimens were collected in three areas between the cities of várzea alegre and barbalha. a pentastomid species (raillietiella mottae) was parasitizing (nine specimens) a male of a. ameiva with a prevalence of 2.22% considering all lizards collected in the region and prevalence of 50% considering only rainforest environmen ... | 2019 | 29694565 |
| interstitial cell cycle of ameiva ameiva (sauria, teiidae)in the cerrado region of central brazil. | the patterns of annual variations in spermatogenic and interstitial cell activities were investigated in ameiva ameiva from central brazil. testis mass, germinative epithelium height, and seminiferous tubule diameter were used as indicators of spermatogenic activity, while the cell density and the height of the interstitial cell subtunic were used as indicators of the activity of interstitial cells. monthly means of these parameters were compared by means of an anova, using size-adjusted values. ... | 1997 | 29852639 |