8 results on '"gamont"'
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2. Gamont
- Author
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Mehlhorn, Heinz, editor
- Published
- 2016
- Full Text
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3. Redescription of Haemogregarina garnhami (Apicomplexa: Adeleorina) from the blood of Psammophis schokari (Serpentes: Colubridae) as Hepatozoon garnhami n. comb. based on molecular, morphometric and morphologic characters.
- Author
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Abdel-Baki, Abdel-Azeem, Al-Quraishy, Saleh, and Zhang, J.
- Subjects
HAEMOGREGARINA ,SAND snakes ,GERM cells ,SNAKE morphology ,MORPHOMETRICS ,RIBOSOMAL RNA ,PSAMMOPHIS ,ERYTHROCYTES - Abstract
Hepatozoon garnhami n. comb. was redescribed from Schokari sand snakes ( Psammophis schokari) collected from Riyadh city in Saudi Arabia. Gametocytes were found in the peripheral blood of 2 of 15 snakes examined. Based on the similar morphological and morphometric characteristics, the same host and a similar host habitat environment, it can be concluded for the first time that the present species is conspecific with Haemogregarina garnhami previously reported from Psammophis shokari aegyptius. To further characterize this parasite, the partial 18S rRNA gene was amplified and sequenced. The sequence analysis also showed that Haemogregarina garnhami should be reassigned into the genus Hepatozoon as Hepatozoon garnhami which has 99.5% (859/863 bp) sequence similarity to Hepatozoon ayorgbor, infecting the erythrocytes of Python regius in Ghana. Phylogenetic analysis showed that H. garnhami formed a mixed clade with Hepatozoon spp. from geckos, snakes and rodents and ophidian Hepatozoon spp. did not form a separated phylogenetic unit. Also, Psammophis schokari-infecting Hepatozoon contained several different genetic lineages. To our knowledge, the present work extends the geographic distribution of H. garnhami and is the first report of Hepatozoon infection in snakes from Saudi Arabia. [ABSTRACT FROM AUTHOR]
- Published
- 2014
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- View/download PDF
4. Factors determining the in vitro emergence of sexual stages of Hepatozoon clamatae from erythrocytes of the Green Frog ( Rana clamitans).
- Author
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Trites, M.J., Ferguson, L.V., Ogbuah, C.T., Dickson, C.M., and Smith, T.G.
- Subjects
- *
GREEN frog , *LITHOBATES , *ERYTHROCYTES , *BLOOD cells , *MOSQUITOES , *CULEX , *MALARIA , *PLASMODIUM - Abstract
Sexual reproduction of apicomplexan parasites in haematophagous arthropods requires that intracellular sexual stages of these protozoa escape vertebrate erythrocytes in the blood meal. Although cues that signal sexual stages of the human malaria parasite ( Plasmodium falciparum Welch, 1897) to emerge from erythrocytes are well documented, such signals are poorly known for other blood-dwelling Apicomplexa. The objective of this comparative study was to investigate conditions required to induce in vitro emergence of sexual stages of Hepatozoon clamatae (Stebbins, 1905) from frog erythrocytes. Blood was drawn from Green Frogs ( Rana clamitans Latreille in Sonnini de Manoncourt and Latreille, 1801 = Lithobates clamitans clamitans (Latreille in Sonnini de Manoncourt and Latreille, 1801)) infected with H. clamatae and treated with solutions of various concentrations of saline, pH, and xanthurenic acid at different temperatures. Hypertonic saline solutions of 200 and 222 mmol/L at pH 7.4 and 7.7 elicited emergence of nearly 100% of gamonts from frog erythrocytes, but at pH 8.0 resulted in decreased emergence. Solutions containing 1, 10, and 100 μmol/L xanthurenic acid increased gamont emergence at saline concentrations of 156, 178, and 244 mmol/L, but decreased emergence at 200 and 222 mmol/L. Gamont emergence increased as incubation temperatures increased from 18 to 26 °C. These results suggest that conditions necessary for emergence of sexual stages of bloodstream Apicomplexa from erythrocytes vary among genera. [ABSTRACT FROM AUTHOR]
- Published
- 2013
- Full Text
- View/download PDF
5. Susceptibility of Aedes aegypti and Aedes albopictus larvae to Ascogregarina culicis and Ascogregarina taiwanensis (Apicomplexa: Lecudinidae) from Florida
- Author
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Reyes-Villanueva, Filiberto, Becnel, James J., and Butler, Jerry F.
- Subjects
- *
AEDES aegypti , *BIOLOGICAL assay , *MYCOSES - Abstract
The susceptibility of Aedes aegypti to Ascogregarina culicis and Aedes albopictus to Ascogregarina taiwanensis was examined with mosquito and parasite strains from Tampa, FL. When each host was bioassayed with its natural gregarine, the infection intensity indicated that Ae. aegypti was 59% more susceptible to A. culicis (87 gamonts/larva) than Ae. albopictus to A. taiwanensis (47 gamonts/larva). Infections in single and mixed host populations exposed to 100 oocysts/larva of one and both parasites demonstrated that Ae. aegypti harbors higher A. culicis gamont loads than Ae. albopictus of A. taiwanensis. In dual gregarine exposures of single host populations, the A. culicis infection intensity in Ae. aegypti was reduced by ∼50%. A. taiwanensis exhibited the same capability of infecting Ae. albopictus in single and dual exposures. In mixed host populations there were no cross infections, but A. taiwanensis in Ae. albopictus produced an infection intensity of ∼70% lower than that of A. culicis in Ae. aegypti. [Copyright &y& Elsevier]
- Published
- 2003
- Full Text
- View/download PDF
6. Sexual Reproduction of the Foraminiferan Planoglabratella opercularis (d'Orbigny, 1839) in Nature
- Author
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Preobrazhenskaya, T. V. and Tarasova, T. S.
- Published
- 2004
- Full Text
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7. Illustrated glossary of terms used in foraminiferal research
- Author
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Lukas Hottinger and Carnets Geol.,
- Subjects
biformed ,autogamy ,canaliculate ,Stratigraphy ,processes ,lectotype ,chirality ,glomerulus ,3d model ,bulla ,residual ,spinose ,teratological ,neanic ,enveloping ,biserial ,oral ,parachomata ,pseudopodia ,apex ,tongue ,Golgi ,meiosis ,polarity ,limbate ,tooth ,stellate ,suture ,gutter ,unilocular ,ridge ,ridges ,endoskeleton ,ornamentation ,homologous ,supplementary ,pirotheca ,hamulus ,plane ,endemic ,adauxiliary ,pile ,notch ,reticulopodia ,neotype ,openings ,topotype ,pycnotheca ,system ,hemiseptula ,monothalamous ,pattern ,equatorial ,sutural ,columella ,uniserial ,plug ,megalospheric ,cyst ,shaft ,pseudochamber ,side ,chessboard ,hierarchy of terms ,salients ,cell ,generotype ,areal ,pioneering ,plates ,speciation ,costate ,funnel ,tubulospines ,vacuolar ,fissure ,areolate ,respiration ,Autogamy ,endoplasm ,rim ,pavement ,filling ,cavity ,hole ,schizont ,pectination ,microspheric ,flabelliform ,ventral ,marginal ,hypodermis ,requirements ,foramen ,scrobis ,flange ,list ,odd ,whorl ,pseudumbilicus ,rhizopodia ,acute ,subembryonic ,acervuline ,convolute ,symbiosis ,toothplate ,symbiont ,haploid ,protheca ,polythalamous ,cytoplasm ,epitheca ,community ,orbitolinid ,monolamellar ,float-chamber ,sphaeroconch ,growth ,supraembryonic ,reduction ,lobe ,bilocular ,holotype ,pigeon ,lcsh:Stratigraphy ,surface ,polar ,structure ,filaments ,proxima ,asexual ,hypodigm ,spirals ,annulus ,plate ,layer ,umbo ,phenetic ,progenitor ,synonym ,compartment ,granule ,antetheca ,biology.organism_classification ,cancellate ,gerontic ,sympatric ,dendritic ,passage ,pylome ,sealing ,deuteroloculus ,syntypes ,coalescence ,involute ,orbitolitid ,pits ,Foraminifera ,shape ,joist ,chevron ,aboral ,biconcave ,protoconch ,pseudokeriotheca ,gametogamy ,congeneric ,triserial ,auxiliary ,proloculus ,tunnel ,membrane ,costellae ,agamont ,counterseptum ,micropaleontology ,sieve ,ponticulus ,Geology ,Ornaments ,septulum ,global ,labyrinthic ,triconch ,rectilinear ,light ,perforate ,ring ,retral ,index ,zygote ,pillar ,coenocline ,husbandry ,tube ,tubercle ,intraumbilical ,interpore ,aperture ,sipho ,stolon ,chamberlet ,extraumbilical-umbilical ,intern ,retrovert ,cupule ,buccal ,epiphyte ,coil ,dimorphism ,planispiral ,papilla ,face ,striae ,chamber ,allopatric ,paratypes ,intraseptal ,spine-base ,ultimate ,regeneration ,gamontogamy ,reticular ,comparative anatomy ,knob ,pore-pit ,polyvalent ,entosolenian ,acuminate ,advolute ,interlocular ,adapertural ,apogamy ,median ,main ,incisional ,loculus ,trough ,accessory ,periapertural ,terminal ,plastogamic ,flagellum ,sarcode ,pseudospinose ,foraminifer ,attics ,spiroconvex ,alar ,murus ,wall ,orbitoid ,cuneate ,lcsh:QE640-699 ,periembryonic ,eucaryote ,arborescent ,body ,pseudorbitoid ,phrenotheca ,transverse ,proximal ,host ,lamelliform ,coiling ,exocytosis ,secondary ,actin ,feeding ,radius ,valvular ,reniform ,hemiseptular ,organic ,subsidiary ,abaxial ,imperforate ,spiroloculine ,inflational ,interseptum ,rafter ,blades ,primary ,intradermal ,penultimate ,distal ,photoinhibition ,cycle ,maturation ,biconvex ,exoskeleton ,Paleontology ,extraumbilical ,spike ,acceleration ,sigmoid ,flexostyle ,sinistral ,trochoid ,lcsh:Geology ,arrangement ,lcsh:Paleontology ,adventitious ,cotype ,striate ,cuniculus ,mosaic ,polygonal ,evolute ,metabolism ,sheets ,protoforamen ,maturo-evolute ,choma ,species ,buttress ,furrow ,type ,nucleoconch ,oblique ,lip ,lobes ,nepionic ,folium ,interlamellar ,adaxial ,outer ,foveolate ,bipartitor ,lamination ,mitochondrion ,nonlamellar ,cover ,deuteroconch ,lcsh:QE701-760 ,selliform ,lamella ,diaphanotheca ,apertures ,fistulose ,tectorium ,cohort ,textures ,cone ,succession ,umbilicus ,protoplasm ,closing ,depression ,sulcus ,euphotic ,tectum ,interradius ,interseptal ,annular ,pilintradermal ,trimorphism ,calyx ,prolongation ,epiderm ,spine ,keel ,parafossette ,meandrine ,septal ,chloroplast ,vestibule ,basement ,agglutinated ,peripheral ,floor ,bilateral ,venter ,pore-chimney ,generations ,pore-fields ,pustule ,latero-marginal ,climax ,homonym ,punctate ,cameral ,equitant ,pseudospine ,distinctly ,vortex ,fluting ,A-form ,microsphere ,boss ,cruciform ,plectogyral ,arenaceous ,flap ,pillars ,trabecules ,brood ,Glossary ,beading ,synonymy ,juvenarium ,spiral ,diploid ,trochospiral ,dorsal ,hispid ,chomatal ,husband ,lumen ,textural ,division ,canalicular ,perforation ,balloon ,intraseptular ,parakeriotheca ,ornaments ,biconch ,apparatus ,blueprinting ,biology ,interauxiliary ,cuneiform ,lamellar ,biloculine ,intrathalamou ,partition ,gamont ,multiple ,disposition ,test-structure ,pairs ,reflectus ,[SDU.STU.PG] Sciences of the Universe [physics]/Earth Sciences/Paleontology ,section ,clavate ,plastogamy ,life ,test-composition ,septular ,carina ,cyclical ,cycles ,jagged-granular ,subepidermal ,contrefort ,isodiscodine ,orbitoidal ,test-architecture ,canal ,pore-funnel ,mitosis ,supplemental ,photosynthesis ,costae ,serial ,syntype ,fusiform ,interiomarginal ,lining ,nepiont ,space ,egg-holder ,alveole ,microstria ,mask ,network ,glossary ,maerl ,preseptal ,biumbonate ,vicarious ,four-stolon ,organelle ,proximus ,orifice ,porcelaneous ,pore-plate ,Microsphere ,partner ,trematophore ,groove ,labial ,skeleton ,parapores ,crest ,Protheca ,plastid ,paries ,cribrate ,reversed ,bilamellar ,axial ,fossette ,chamberlets ,equator ,acicular ,style ,sagittal ,alveolar ,alternating ,murica ,ectoplasm ,individuals ,associations ,complex ,architecture ,retroparies ,sheet ,apical ,embryo ,instar ,embryonic ,progressive ,infundibulum ,radial ,conspecific ,alternation ,milioline ,trichome ,vertical ,test ,inframarginal ,tuberculate ,pseudopore ,orbitopsellid ,megalosphere ,attachment ,Cuneiform ,teeth ,sessile ,incrusting ,lamellation ,area ,triloculine ,pseudoplanktic ,plesiotype ,extrathalamous ,neck ,indistinctly ,canals ,granular ,loop-hole ,pyrenoid ,flosculinisation ,embryon ,bifid ,expanse-chamber ,systems ,cyclopsinellid ,quinqueloculine ,pore ,texture ,corona ,biumbilicate ,shoulder ,umbilicoconvex ,keriotheca ,lateral ,umbilical ,pole ,elongation ,microtubule ,envelope ,thylacoid ,astral ,streptospiral ,circumproloculus ,axis ,basal ,apogamous ,partitional ,sigmoiline ,cosmopolitan ,spicular ,interio-areal ,agamogony ,radiate ,umbilicate ,lcsh:QE1-996.5 ,cord ,septalis ,torsion ,stratophenetics ,intercameral ,apertural ,bead ,phototropy ,protopore ,foliar ,beam ,dextral ,tubulopor ,marginoporid ,zone ,feathered ,analogous ,ephebic ,inner ,sere ,peristome ,saddle ,pores ,six-stolon ,B-form ,crystalline ,epiembryonic ,ramp ,cubiculum ,stellar ,chambers ,disclimax ,Information retrieval ,spiral-umbilical ,anterior ,template ,veneer ,extern ,gamogony ,bowl ,microgranula ,septum ,reticulate ,tubulin ,fore-court ,central ,foramenal ,pillar-pore ,phialine ,socculus - Abstract
An illustrated glossary of terms used in the analysis of the shells of recent and fossil foraminifera supplemented by a rigorous selection of terms that facilitate an understanding of their biology and their use in ecology and biostratigraphy. The glossary includes some 650 entries illustrated by 83 - often composite – figures many of which are stereographs or 3D models. A taxonomic index lists the 140 taxa illustrated.
- Published
- 2006
8. In Vitro Evaluation of Anti-Eimeria tenella, Gamont-specific, Monoclonal Antibodies and Partial Characterization of their Target Antigens
- Author
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Wilson, Eric
- Subjects
evaluation ,antigens ,partial ,parasitic diseases ,monoclonal ,antibodies ,in vitro ,anti-eimeria tenella ,characterization ,specific ,Biology ,gamont ,target - Abstract
This study represents an effort to interrupt the life cycle of Eimeria tenella, the parasite that causes cecal coccidiosis in chickens, with a panel of 12 gamont-specific monoclonal antibodies (Mabs). To facilitate Mab screening, it was first necessary to develop a cell culture-adapted strain of E. tenella (field strain 80) from primary chicken kidney cells (PCKC) to white Leghorn chickens and back to PCKC. This alternation was repeated through 12 such passages. As a result, we have developed a cell culture-adapted strain of E. tenella that produces over 280% more oocysts in vitro than the original parent strain, and over six times as many oocysts as reported by other investigators. Of the 12 Mabs evaluated, Mab HD8 had the greatest inhibitory effect by significantly reducing (PE. tenella oocysts produced in cell culture by 61% compared with untreated controls. Western blot analysis revealed that the target antigen for Mab HD8 had a molecular mass of 71 and 36 kilodaltons, respectively, when run under nonreduced and reduced conditions. Subsequent evaluation of soluble and membrane-associated proteins indicated that the target antigen for Mab HD8 was membrane-associated. In vivo studies are now required to validate the efficacy of this antigen in a subunit vaccine.
- Published
- 1995
- Full Text
- View/download PDF
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