Summary A coccidia n oocyst from a fecal sample of a dog. Photo taken through a microscope at 40x by Joel Mills on March 20, 2006. Licensing GFDL self with disclaimers migration relicense Category Veterinary medicine images cc by sa 2.5 Copy to Wikimedia Commons bot Fbot Orphan image ... more details
Taxobox name Dorisa image image caption domain Eukaryota regnum Chromalveolata superphylum Alveolata phylum Apicomplexa classis Conoidasida subclassis Coccidia sina ordo Eucoccidiorida subordo Eimeriorina familia Eimeriidae genus Dorisa subdivision ranks Species subdivision Dorisa aethiopsaris br Dorisa arizonensis br Dorisa bengalensis br Dorisa chakravartyi br Dorisa graculae br Dorisa hareni br Dorisa harpia br Dorisa hoarei br Dorisa indica br Dorisa mandali br Dorisa passeries br Dorisa rayi br Dorisa vagabundae br Dorisa is a genus of parasitic protozoa in the phylum Apicomplexa . The genus was separated from the genus Dorisiella by Levine in 1908. ref name Levine1980 Levine ND 1980 Dorisa n. gen. Protozoa, Apicomplexa, Eimeriidae . J Parasitol 66 1 11 ref Dorisiella was created for a parasite infecting a marine polychaete by Ray in 1930. Levine separated off a number of species that while morphologically similar occurred in vertebrates rather that polychaetes. Life cycle The species in this genus infect the gasterointestinal wall of vertebrates. Description Genus diagnosis is dependent on the oocyst there is a definite cell wall in this genus whereas in Dorisiella the oocyst wall is membrane like. Host records D. harpia lesser hairy winged bat Harpiocephalus harpia Harpiocephalus harpia lasyurus References reflist Alveolata Category Apicomplexa ... more details
italic title Taxobox name Karyolysus domain Eukaryota regnum Chromalveolata superphylum Alveolata phylum Apicomplexa classis Coccidia ordo Eucoccidiorida subordo Adeleorina familia Karyolysidae genus Hemolivia subdivision ranks Species subdivision Hemolivia mariae br Hemolivia mauritanica br Hemolivia stellata br Hemolivia is a genus of the phylum Apicomplexia . History This genus was described in 1990 by Petit et al . ref name Petit19900 Petit G, Landau I, Baccam D, Lainson R 1990 Description et cycle biologique d Hemolivia stellata n.g., n.sp., h mo gr garine de crapauds Br siliens. Ann Parasitol Hum Comp 65 3 15. ref The type specis is Hemolivia stellata . Characteristics of the genus The species in this genus are haemogregarine s and infect exothermic vertebrates. They have erythrocytic gamogony , both erythrocytic and extra erythrocytic Protozoal merogony merogony and cystogony . The definitive hosts are ixodid tick s. Sporogony occurs in two phases. In the first phase conjugation and fertilization occur within the tick gut. This is followed by the formation of oocyst s and the generation of sporokinete s. In the second phase the sporokinetes invade the body of the tick and give rise to sporocyst s containing sporozoite s infective to the vertebrate host. br Life cycle The vertebrate Host biology host of this species is the cane toad Bufo marinus . The invertebrate host is the tick Amblyomma rotondatum . Toads become infected by ingesting infected ticks. The sporozoites are released from the sporocysts within the tick and penetrate the intestinal wall. Within the toad they replicate within the endothelial cell s and erythrocyte s. Liver cysts may form. Circulating gamonts are then ingested by a tick. Within the tick gut the gamonts form pairs and penetrate the epithelial cells. Within these cells they associate in Syzygy biology syzygy . Gametes are formed and fuse forming an oocyst . The oocysts are star shaped. The oocyst undergoes meiosis and then mitosis pr ... more details
This article is about Isospora hammondi Barnard et al., 1971, infecting rice rats. See Isospora datusi for the species sometimes known as Isospora hammondi Frenkel, 1974 . ref Tadros and Laarman, 1982, p. 332 ref Taxobox regnum Chromalveolata phylum Apicomplexa classis Conoidasida ordo Eucoccidiorida familia Eimeriidae genus Isospora species I. hammondi binomial Isospora hammondi binomial authority Barnard, Ernst, and Stevens, 1971 Isospora hammondi is an apicomplexa n parasite of the genus Isospora that infects the marsh rice rat Oryzomys palustris . It was discovered at Tuskegee National Forest , Macon County, Alabama Macon County , Alabama, and formally described in 1971. ref name Bea1293 Barnard et al., 1971, p. 1293 ref The specific name zoology specific name honors Dr. Datus M. Hammond of Utah State University . ref name Bea1294 Barnard et al., 1971, p. 1294 ref The oocyst is about egg shaped and has a smooth, single layered wall about 1 m thick. It is 24 to 30 m long and 16 to 21 m broad when sporulation sporulated . There are two Apicomplexan cellular morphology sporocyst , 13 to 18 m long and 11 to 15 m broad, with four sporozoite s each. The sporozoites are placed parallel along the long axis of the sporocyst. The sporozoites are slightly curved in form and sausage shaped and lack refractile globule s. Near one end, there is one a light, rounded cell nucleus nuclear region. ref name Bea1294 Unlike most rodent infecting Isospora species, I. hammondi lacks both an oocyst residuum and Stieda bodies . Most other species that also lack both of these structures have a differently shaped oocyst. Two other species Isospora uralica from the field mouse Apodemus sylvaticus and Isospora ordubadica from the gerbil Meriones persicus differ in size and other details. ref name Bea1295 Barnard et al., 1971, p. 1295 ref In Alabama, I. hammondi was recovered in 3 of 19 examined marsh rice rats. At room temperature, ... more details
followed by several rounds of mitosis . The ookinte is now known as an oocyst. Within the oocyst the nuclei migrate to the surface of the oocyst and gather cytoplasm around them becoming known as sporoblast ... active. On release from the oocyst the sporokinetes migrate throughout the body of the mite. Some ... more details
unreferenced date March 2010 Infectious dose ID is the amount of pathogen measured in number of microorganisms required to cause an infection in the host. Usually it varies according to the pathogenic agent and the consumer s age and overall health. Infectious doses for some known microorganisms Escherichia coli very large 10 sup 6 sup 10 sup 8 sup of organisms Salmonella quite large 10 sup 5 sup of organisms Cholera relatively large 10 sup 4 sup 10 sup 6 sup of organisms Bacillus anthracis relatively large 10 sup 4 sup spores Campylobacter jejuni low 500 organisms Shigella very low 10s of organisms C.parvum very low 10 to 30 oocyst s Escherichia coli O157 H7 very low 10 organisms Entamoeba coli extremely low from 1 cyst Consumer Food Safety Category Food safety Category Foodborne illnesses Category Infectious diseases Category Nutrition Category Microbiology ... more details
Taxobox domain Eukarya regnum Chromalveolata superphylum Alveolata phylum Apicomplexa classis Aconoidasida subclassis Haemosporidiasina ordo Achromatorida familia Anthemosomatidae genus Anthemosoma subdivision ranks Species subdivision Anthemosoma garnhami br Anthemosoma is a genus of parasitic protozoa of the phylum Apicomplexia. There is only one species recognised in this genus a parasite of mammal s. History The genus was described in 1969 by Landau, Boulard and Housin. ref name Landau I, Boulard Y, Housin R. 1969 Anthemosoma garnhami n. g. n. sp., 1st Dactylosomidae known in mammals. C R Acad Sci Hebd Seances Acad Sci D. 268 5 873 875 ref Description Although polar ring s and rhoptries are present other typical Apicomplexian features including conoid , flagella e, oocyst s, sporocyst s and pseudocyst s are absent. The species parasitises erythrocyte s. It is heteroxenous with Protozoal merogony merogony and gamogony in the vertebrate host. Fertilization and sporogony in the invertebrate host. Meront s These occur in erythrocytes. 5 32 merozoites are produced by budding. Gamont s These are spheroid or ovoid. References reflist Protist stub Alveolata Category Apicomplexa ... more details
italictitle Taxobox name image image caption domain Eukaryota regnum Chromalveolata superphylum Alveolata phylum Apicomplexa classis Conoidasida subclassis Coccidiasina ordo Eucoccidiorida subordo Eimeriorina familia genus Hoarella subdivision ranks Species subdivision Hoarella garnhami br Hoarella is a genus of parasitic protozoa in the phylum Apicomplexa . This genus infects reptile s. Only one species Hoarella garnhami in this genus is recognised. Description This genus was described in 1963 by Arcay de Peraza. ref name dePeraza1963 Arcay de Peraza 1963 Studies on two new coccidia from the Venezuelan lizard Cnemidophorus lemniscatus lemniscatus Hoarella garnhami gen.nov., sp.nov. and Eimeria flaviviridis americana subsp.nov. Parasitology 53 95 107 ref The meront s and gamont s are found within the intestinal wall. The oocyst s have 16 sporocyst s each of which has 2 sporozoite s. The life cycle is currently not known. Host range This species is found in the rainbow whiptail lizard Cnemidophorus lemniscatus . References reflist Category Apicomplexa ... more details
italic title Taxobox color khaki name Vetufebrus image domain Eukaryota unranked phylum Alveolata phylum Apicomplexa classis Aconoidasida ordo Haemosporida familia Plasmodiidae genus Vetufebrus subdivision ranks Species subdivision Vetufebrus ovatus br Vetufebrus is an extinct genus of haemospororida that was described from Dominica n amber dating to the mid Tertiary era. ref name Poinar2011 Poinar GO Jr 2011 Vetufebrus ovatus n . gen ., n . sp . Haemospororida Plasmodiidae vectored by a streblid bat fly Diptera Streblidae in Dominican amber. Parasit Vectors 4 1 229 ref The genus name is from the Latin words vetus old and febris fever . The species name is derived from the Latin ovatus oval, egg shaped and refers to the shape of the oocysts. Although members of the Nycteribiidae transmit bat malaria presently, extant streblids have never been implemented as vectors of bat malaria. The description of this genus shows that these species have transmitted bat malaria in the past. Description This species was described from two oocyst s attached to the midgut wall and from sporozoite s in salivary gland s and ducts of a fossil bat fly . The oocysts are ovoid and the sporozoites are short and stubby with rounded ends. References reflist Category Apicomplexa ... more details
Taxobox name Spirocystis image image caption domain Eukaryota regnum Chromalveolata superphylum Alveolata phylum Apicomplexa classis Conoidasida subclassis Coccidia sina ordo Eucoccidiorida subordo Eimeriorina familia genus Wenyonella subdivision ranks Species subdivision Wenyonella africana br Wenyonella ameivae br Wenyonella anatis br Wenyonella arcayae br Wenyonella baghdadensis br Wenyonella bahli br Wenyonella columbae br Wenyonella gagari br Wenyonella gallinae br Wenyonella hoarei br Wenyonella levinei br Wenyonella mackinnonae br Wenyonella maligna br Wenyonella markovi br Wenyonella parva br Wenyonella pellerdyi br Wenyonella philiplevinei br Wenyonella uelensis br Wenyonella is a genus of parasitic protozoa in the phylum Apicomplexa . The genus was described in 1933 by Hoare. ref name Hoare1933 Hoare CA 1933 Studies on some new ophidian and avian coccidia from Uganda, with a revision of the classification of the Eimeriidea . Parasitology 25 359 388 ref The type species is Wenyonella africana . Description The species in this genus have oocyst s with four sporocyst s each sporocyst gives rise to four sporozoite s. They are found in the gasterointestinal tracts of reptile s, bird s and mammal s. References Reflist Alveolata Category Apicomplexa ... more details
Infobox disease Name Isosporiasis Image Caption DiseasesDB 29775 ICD10 ICD10 A 07 3 a 00 ICD9 ICD9 007.2 ICDO OMIM MedlinePlus eMedicineSubj med eMedicineTopic 1194 eMedicine mult eMedicine2 ped 1213 MeshID D021865 Isosporiasis is a human intestinal disease caused by the parasite Isospora belli . It is found worldwide, especially in tropical and subtropical areas. Infection often occurs in Immune system immuno compromised individuals, notably AIDS patients, and outbreaks have been reported in institutionalized groups in the United States. The first documented case was in 1915. Causal Agent The coccidia n parasite Isospora belli infects the epithelium epithelial cells of the small intestine, and is the least common of the three intestinal coccidia that infect humans Toxoplasma , Cryptosporidium , and Isospora . Life cycle At time of excretion, the immature oocyst contains usually one sporoblast more rarely two . In further maturation after excretion, the sporoblast divides in two, so the oocyst now contains two sporoblasts. The sporoblasts secrete a cyst wall, thus becoming sporocysts and the sporocysts divide twice to produce four sporozoites each. Infection occurs by ingestion of sporocyst containing oocysts the sporocysts excyst in the small intestine and release their sporozoites, which invade the epithelial cells and initiate schizogony . Upon rupture of the wiktionary schizont schizonts , the merozoites are released, invade new epithelial cell s, and continue the cycle of asexual multiplication. Trophozoites develop into wiktionary schizont schizonts which contain multiple merozoites. After a minimum of one week, the sexual stage begins with the development of male and female gametocytes. Fertilization results in the development of oocysts that are excreted in the stool. Isospora belli infects both humans and animals. Clinical Features Infection causes acute, non bloody diarrhea with crampy abdominal pain, which can last for weeks and result in malabsorption an ... more details
Taxobox image image width 210px image caption Eimeria maxima oocysts domain Eukaryota regnum Chromalveolata superphylum Alveolata phylum Apicomplexa classis Conoidasida ordo Eucoccidiorida familia Eimeriidae family authority Minchin 1903 genus Tyzzeria genus authority subdivision ranks Species subdivision Tyzzeria allenae br Tyzzeria anseris br Tyzzeria boae br Tyzzeria chalcides br Tyzzeria chenicusae br Tyzzeria galli br Tyzzeria natrix br Tyzzeria parvula br Tyzzeria pellerdyi br Tyzzeria peomysci br Tyzzeria perdyi br Tyzzeria perniciosa br Tyzzeria typhlopis br Tyzzeria is a genus of parasitic protozoa that with one exception Tyzzeria boae infect the cells of the small intestine . ref http wildlife1.wildlifeinformation.org S 0zProctista apic tyzzeria tyzzeria.htm ref History The genus Tyzzeria was first described by Allen in 1936. ref name Allen1936 Allen EA 1936 Tyzzeria perniciosa gen . et sp . nov ., a coccidium from the small intestine of Pekin Duck, Anas domesticus L. Archiv f r Protistenkunde 87, 262 267 ref As is all too common in protozoal taxonomy the validity of several of the species is controversial. Species occurring in Anseriforme birds appear to be valid whereas the other species may be misidentifications. The application of DNA based methods it is to be hoped will resolve these matters. Description The oocyst s lack sporocysts each oocyst possesses eight sporozoite s. Host parasite relations Tyzzeria allenae common goldeneye Chenicus coromandelianus br Tyzzeria boae red tailed boa Boa constrictor Boa constrictor constrictor br Tyzzeria chalcides ocellated skink Chalcides ocellatus br Tyzzeria chenicusae common goldeneye Chenicus coromandelianus br Tyzzeria galli Ceylon jungle fowl Gallus lafayettei br Tyzzeria natrix yamakagashi Rhabdophis tigrinus br Tyzzeria parvula greater white fronted goose Anser albifrons , greylag goose Anser anser , snow goose Anser caerulescens , Ross goose Anser rossii , brent goose Branta bernicla , Canada goose Brant ... more details
Infobox Disease Name PAGENAME Image Cyclospora cayetanensis.jpg Caption Cyclospora cayetanensis DiseasesDB 32228 ICD10 ICD10 A 07 8 a 00 ICD9 ICD9 007.5 ICDO OMIM MedlinePlus eMedicineSubj ped eMedicineTopic 527 MeshID D021866 Cyclosporiasis is an infection with the protozoan Cyclospora cayetanensis , a pathogen transmitted by feces or feces contaminated fresh produce and water. Outbreak s have been reported due to contaminated raspberry raspberries . It is not spread from person to person. It can be a cause of diarrhea for travelers. Mode of infection When an oocyst of Cyclospora cayetanensis enters the small intestine and invades the mucosa it incubates for about one week. After incubation the person begins to experience severe watery diarrhea, bloating, fever, stomach cramps, and muscle aches. Oocysts can be present due to using contaminated water or human feces as fertilizer . This infection primarily affects humans and other primates. Diagnosis and treatment Diagnosis can be difficult due to the lack of recognizable oocysts in the feces. Using tests like PCR based DNA tests and Ziehl Neelsen stain acid fast staining can help with identification. The infection is often treated with Co trimoxazole , because traditional anti protozoan drugs are not sufficient. To prevent transmission through food, cook food and try to avoid drinking stream water while outdoors. References Talaro, Kathleen P. Foundations in Microbiology Fifth Edition. New York McGraw Hill Companies Inc., 2005. External links http www.healthocrates.com Cyclospora Infection Cyclospora Infection at Healthocates disease stub Chromalveolate diseases Category Protozoal diseases ca Ciclosporosi es Ciclosporosis id Siklosporiasis ... more details
Unreferenced date November 2006 Italictitle Taxobox color khaki name Eimeria stiedae regnum Protista phylum Apicomplexa classis Conoidasida ordo Eucoccidiorida familia Eimeriidae genus Eimeria subdivision ranks Species subdivision E. stiedae Eimeria stiedae is a species of Eimeria that causes hepatic coccidiosis in rabbits . It was observed for the first time by Antoni van Leeuwenhoek in 1674. Life cycle The rabbits ingest sporulated oocysts . Sporulated oocysts contain four sporozoites that hatch and travel via the hepatic portal vein to the liver, and eventually penetrate the bile duct epithelium , where they undergo asexual reproduction known schizogony . Rupture of the schizont consequently causes epithelial cell rupture and death. Merozoites will penetrate other cells and create more merozoites for one to several rounds. Eventually, a merozoite becomes a male microgamecyte and asexually reproduces in epithelial cells. A ruptured microgamecyte infects a cell with the female macrogamecyte and through sexual reproduction create a zygote . The zygote develops a protective shell before expulsion in the bile excreation and then the feces as an oocyst. Pathogenesis and Pathology The schizonts in the bile duct cause bile duct hyperplasia , and blockage of bile ducts leading to hepatomegaly and hence icterus . Due to liver failure, the abdomen will be distended with fluid. Diagnosis The presence of oocysts on fecal flotation or impression smear of the liver are diagnostic for coccidiosis . The prepatent period is 18 days sporulation occurs after three days. DEFAULTSORT Eimeria Stiedae Category Apicomplexa Protist stub Veterinary med stub de Kokzidiose der Kaninchen ja wa Coccidi ze s robetes ... more details
Taxobox image Emaxima oocysts usda.jpg image width 210px image caption Eimeria maxima oocysts name Conoidasida domain Eukaryota regnum Chromalveolata superphylum Alveolata phylum Apicomplexa classis Conoidasida subdivision ranks Subclasses subdivision Coccidia Gregarinia Conoidasida is a class biology class of protist s. The class was defined in 1988 by Levine ref cite book title The protozoan phylum Apicomplexa number v. 1 series The Protozoan Phylum Apicomplexa author Levine, N.D. isbn 9780849346538 year 1988 publisher CRC Press ref and contains two subclasses the coccidia and the gregarine s. All members of this class have a complete, hollow, truncated conoid organelle conoid . Gregarines tend to parasite parasitize invertebrate s with the mature gamont s being extracellular, the coccidia mostly infect vertebrate s and have intracellular gamonts. Description A conoid is found in most species and when present forms complete but truncated cone. Sexual and asexual reproduction are present in biological life cycle life cycle of all species . Each zygote normally forms an oocyst wall within which it undergoes meiosis . This is sometimes followed by mitosis . This process of sporogony produces mobile vermiform infectious sporozoite s. Multiple mitotic divisions schizogony also occur during protozoal merogony merogony of the feeding stages trophozoite s and during gametogony . Motility Microgametes of some species are flagella ted. Locomotion of other gamete s and any other motile stages is by gliding motility gliding or body flexion. Some species possess pseudopodia but use them only in phagocytosis . External links ITIS id 553100 taxon Conoidasida accessdate June 1, 2007 References reflist Alveolata Chromalveolate stub Category Apicomplexa es Conoidasida id Conoidasida simple Conoidasida ... more details
Taxobox regnum Chromalveolata phylum Apicomplexa classis Conoidasida ordo Eucoccidiorida familia Eimeriidae genus Eimeria species E. couesii binomial Eimeria couesii binomial authority Kruidenier, Levine, and Ivens, 1960 Eimeria couesii is an apicomplexa n parasite of the genus Eimeria that infects the intestine of the Oryzomyini rice rat Oryzomys couesi in Mexico. ref Kruidenier et al., 1960 Barnard et al., 1971, p. 1294 ref It has an oocyst residuum and Stieda bodies , structures that are absent in some other Eimeria . ref Barnard et al., 1974, p. 410 ref References reflist Literature cited Barnard, W.P., Ernst, J.V. and Stevens, R.O. 1971. http www.jstor.org stable 3277983 Eimeria palustris sp. n. and Isospora hammondi sp. n. Coccidia Eimeriidae from the marsh rice rat, Oryzomys palustris Harlan subscription required . The Journal of Parasitology 57 6 1293 1296. Barnard, W.P., Ernst, J.V. and Dixon, C.F. 1974. http www.jstor.org stable 3278353 Coccidia of the cotton rat, Sigmodon hispidus , from Alabama subscription required . The Journal of Parasitology 60 3 406 414. Kruidenier, F.J., Levine, N.D. and Ivens, V. 1960. Eimeria Protozoa Eimeriidae from the rice rat and pygmy mouse in Mexico. Transactions of the Illinois Academy of Sciences 52 100 101. only Zoological Record summary seen Category Apicomplexa ... more details
Taxobox domain Eukaryota regnum Chromalveolata superphylum Alveolata phylum Apicomplexa classis Conoidasida subclassis Coccidiasina ordo Eucoccidiorida subordo Eimeriorina familia Eimeriidae subfamilia Ithaniinae family authority Ludwig 1947 genus Adelina genus authority Hesse 1911 subdivision ranks Species subdivision Adelina akidum small Leger 1900 small br Adelina collembolae small Purrini 1984 small br Adelina castana small Ghosh, Choudhruy, Misra 2000 small br Adelina cryptocerci small Yarwood 1937 small br Adelina domidiata small Schneider 1885 small br Adelina doronis small Hauschka 1943 small br Adelina melolonthae small Tuzet et al 1965 small br Adelina mesnili small Perez 1903 small br Adelina octospora small Hesse 1911 small br Adelina palori small Ghosh, Choudhruy, Misra 2000 small br Adelina picei small Ghosh, Choudhruy, Misra 2000 small br Adelina riouxi small Rioux et al 1972 small br Adelina schellacki small Ray and Dasgupta 1937 small br Adelina sericesthis small Weiser and Beard 1959 small br Adelina simplex small Schneider 1885 small br Adelina tenebrionis by small Sautet 1930 small br Adelina tipulae small Leger 1897 small br Adelina transita small Leger 1904 small br Adelina tribolii small Bhatia 1937 small br Adelina zonula small Moroff 1906 small br Adelina is a genus of protozoa within the phylum Apicomplexa . They are coccidian parasites of of arthropod s and oligochaete s. Host orders include Coleoptera , Diptera , Collembola , Embioptera , Lepidoptera and Orthoptera . History The genus was created by Hesse in 1911 to accommodate a number of species within the genus Adelea that differed significantly the sporocysts in Adelina are fewer in number than in Adelea and are spherical instead of being discoidal. The type species is Adelina octospora small Hesse 1911 small General features Members of this genus have spherical or subspherical oocyst s. The sporocyst s are spherical and thick walled. References reflist Category Apicomplexa Alveolata ... more details
Taxobox name Spirocystis image image caption domain Eukaryota regnum Chromalveolata superphylum Alveolata phylum Apicomplexa classis Conoidasida subclassis Coccidia sina ordo Eucoccidiorida subordo Eimeriorina familia Spirocystidae genus Spirocystis subdivision ranks Species subdivision Spirocystis nidula Spirocystis is a genus of parasitic protozoa in the phylum Apicompexa . The genus was described in 1911 by L ger and Duboscq. ref name Leger1915 Leger L & Duboscq O 1915 Etude sur Spirocystes nidula Leg. et Dub. schizogregarine du Lumbriculus variegatus Mull. Archiv fur Protistenkunde 35 199 211 ref The family Spirocystidae was created in 1915 by Leger & Duboscq in 1915 for this genus. ref name Leger1915 Leger L & Duboscq O 1915 Etude sur Spirocystes nidula Leg. et Dub. schizogregarine du Lumbriculus variegatus Mull. Archiv fur Protistenkunde 35 199 211 ref Description Species in this genus infect the blackworm Lumbriculus variegatus . The asexual forms, cresentic or spiral shaped, may be found in virtually any tissue of the host. The multinucleate vermicular meront s are 35 micron s in length and occur in the coelomic cavity and various tissues of the host. The microgametocytes and macrogametes form in the intestinal epithelium. The microgametes are non flagellated. The zygote produces a thick walled oocyst s 35 microns in diameter. The sporoblast s give rise to a single naked sporozoite with a length of up to 40 microns. References for instructions on creating citations using ref ref see http en.wikipedia.org wiki Wikipedia Footnotes Reflist Alveolata Uncategorized date December 2011 ... more details
tract cause the oocysts to excyst and release sporozoite s generally, two are observed per oocyst ... fusion with female macrogamont, the zygote matures into an oocyst and ruptures the host cell, from ... of oocyst sporulation and amplification by polymerase chain reaction PCR of C. cayetanensis DNA ... decrease in the duration of oocyst excretion, cessation of diarrhea, and stool samples negative ... more details
Taxobox domain Eukaryota regnum Chromalveolata superphylum Alveolata phylum Apicomplexa classis Conoidasida subclassis Coccidia sina ordo Eucoccidiorida subordo Eimeriorina familia Cryptosporidiidae genus Cryptosporidium species C. hominis binomial Cryptosporidium hominis Cryptosporidium hominis , along with Cryptosporidium parvum , is among the medically important Cryptosporidium species. ref cite journal author Leoni F, Amar C, Nichols G, Pedraza D az S, McLauchlin J title Genetic analysis of Cryptosporidium from 2414 humans with diarrhoea in England between 1985 and 2000 journal J. Med. Microbiol. volume 55 issue Pt 6 pages 703 7 year 2006 month June pmid 16687587 doi 10.1099 jmm.0.46251 0 url http jmm.sgmjournals.org cgi pmidlookup?view long&pmid 16687587 ref It is an obligate parasite of humans that can colonize the gastrointestinal tract resulting in the gastroenteritis and diarrhea characteristic of cryptosporidiosis . Unlike C. parvum , which has a rather broad host range, C. hominis is almost exclusively a parasite of humans. As a result, C. hominis has a low Zoonosis zoonotic potential compared to C. parvum . It is spread through the fecal oral route usually by drinking water contaminated with oocyst laden feces. ref cite journal author Fayer R title Cryptosporidium a water borne zoonotic parasite journal Vet. Parasitol. volume 126 issue 1 2 pages 37 56 year 2004 month December pmid 15567578 doi 10.1016 j.vetpar.2004.09.004 url http linkinghub.elsevier.com retrieve pii S0304 4017 04 00406 6 ref Characteristics C. hominis shares many similar characteristics with C. parvum including identical oocyst morphology and life cycle. As a result, C. hominis is most easily differentiated from C. parvum through genetic analysis at specific Locus genetics loci . ref cite journal author Morgan Ryan UM, Fall A, Ward LA, et al. title Cryptosporidium hominis n. sp. Apicomplexa Cryptosporidiidae from Homo sapiens journal J. Eukaryot. Microbiol. volume 49 issue 6 pages 433 4 ... more details
Leeuwenhoek who in 1674 saw oocyst s of Eimeria stiedae in the gall bladder of a rabbit . The first ... . Each gamont forms multiple gamete s. The gametes fuse with another to form oocyst s. The oocysts ... macrogamete forms a zygote which in its turn forms an oocyst which is normally released ... penetrates the body of the vector. The ookinete then transforms into an oocyst and divides initially ... escape from the oocyst and migrate within the body of the vector to the salivary glands where they are injected .... Polyenergid oocyst s and tissue cysts are found in representatives of the orders Protococcidiida ... produces a large number of gametes and the zygote gives rise to an oocyst which is the infective ... more details
to mosquito Gametogenesis Microgametes Macrogametes Fertilization Ookinite Oocyst Sporogony Mosquito ... from the stomach tissues and partly produced by the zygote itself. At this stage, it is known as the oocyst. The oocyst absorbs nourishment and grow in size. These oocyst protrude bulge from the surface ... oocyst may be seen. Sporogony The nucleus of oocyst divides repeatedly to form large number of daughter ... is known as sporogony and is completed in about 10 21 days. The oocyst then burst and sporozoites are relaesed ... more details
has a spore phase oocyst and in this state it can survive for lengthy periods outside a host ... . Effects of ozone, chlorine dioxide, chlorine, and monochloramine on Cryptosporidium parvum oocyst ... more details
Taxobox name Plasmodiidae image Plasmodium vivax 01.png image width 240px image caption A mature Plasmodium vivax trophozoite domain Eukarya regnum Chromalveolata superphylum Alveolata phylum Apicomplexa classis Aconoidasida ordo Haemospororida familia Plasmodiidae subdivision ranks Genera subdivision See text. The Plasmodiidae are a family of apicomplexa n parasite s, including the type genus Plasmodium , which is responsible for malaria . This genus was created in 1903 by Mesnil. They are one of the four families in the Order biology order Haemospororida . The latest addition to the family was made in 2011, with the extinct genus Vetufebrus also with the extinct species Vetufebrus ovatus . ref cite pmid 22152687 ref Diagnostic criteria The diagnostic criteria of the Plasmodiidae are macrogamete s and microgamont s develop independently Syzygy biology syzygy absent microgametocyte produces 8 flagellated microgametes zygote is motile known as an ookinete conoid present in ookinete stage only sporozoites naked in oocyst that is without a sporocyst sporozoites have three walls. heteroxenous Protozoal merogony merogony and gamogony occur in vertebrate host and fertilization and sporogony in definitive host a blood sucking insect hemozoin pigment is produced Taxonomy The family contains the following genera Genus Bioccala small Landau et al 1984 small Genus Biguetiella small Landau et al 1984 small Genus Billbraya small Paperna & Landau 1990 small Genus Dionisia small Landau et al 1980 small Genus Hepatocystis small Miller 1908 small Genus Mesnilium small Misra, Haldar & Chakravarty 1972 small Genus Nycteria small Garnham and Heisch 1953 small Genus Plasmodium small Marchiafava & Celli 1885 small Subgenus Asiamoeba small Telford 1988 small Subgenus Bennettinia small Valki nas 1997 small Subgenus Carinamoeba small Garnham 1966 small Subgenus Giovannolaia small Corradetti, Garnham & Laird 1963 small Subgenus Haemamoeba small Grassi & Feletti 1890 small Subgenus Huffia sma ... more details
italic title Taxobox name Neospora caninum image image width image caption domain Eukaryota regnum Chromalveolata superphylum Alveolata phylum Apicomplexa classis Conoidasida subclassis Coccidia sina ordo Eucoccidiorida familia Sarcocystidae genus Neospora species N. caninum binomial Neospora caninum Neospora caninum is a coccidia n parasite that was identified as a species in 1988. Prior to this, it was misclassified as Toxoplasma gondii due to structural similarities ref cite journal author Dubey JP title Neosporosis the first decade of research journal Int J Parasitol. volume 29 issue 10 pages 1485 8 year 1999 month Oct pmid 10608433 doi 10.1016 S0020 7519 99 00134 4 url http linkinghub.elsevier.com retrieve pii S0020 7519 99 00134 4 ref . The genome sequence of Neospora caninum is determined by the Wellcome Trust Sanger Institute . Neospora caninum is an important cause of spontaneous abortion in infected livestock . Neospora caninum has a heteroxenous life cycle, with the reproductive stage occurring in the intestine of the definitive host , which is the dog ref cite journal author McAllister MM, Dubey JP, Lindsay DS, Jolley WR, Wills RA, McGuire AM title Dogs are definitive hosts of Neospora caninum journal Int J Parasitol. volume 28 issue 9 pages 1473 8 year 1998 month Sep pmid 9770635 doi 10.1016 S0020 7519 98 00138 6 url http linkinghub.elsevier.com retrieve pii S0020751998001386 ref . Other carnivore s, for example, the fox ref cite journal author Almer a S, Ferrer D, Pab n M, Castell J, Ma as S title Red foxes Vulpes vulpes are a natural intermediate host of Neospora caninum journal Vet Parasitol. volume 107 issue 4 pages 287 94 year 2002 month Aug pmid 12163240 doi 10.1016 S0304 4017 02 00162 0 url http linkinghub.elsevier.com retrieve pii S0304401702001620 ref , may also be definitive hosts. Oocyst s passed in the feces of the definitive host are ingested by an intermediate host , for example, cattle, and form tissue cysts. Transplacental transmission, ... more details
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