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Karyolysidae
Karyolysidae is a family of parasitic alveolates of the phylum Apicomplexa The Apicomplexa (also called Apicomplexia) are a large phylum of parasitic alveolates. Most of them possess a unique form of organelle that comprises a type of non-photosynthetic plastid called an apicoplast, and an apical complex structure. T .... References Apicomplexa families {{Apicomplexa-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hemolivia
''Hemolivia'' (also spelled ''Haemolivia'') is a genus of the phylum Apicomplexia. History This genus was described in 1990 by Petit ''et al''. The type species is '' Hemolivia stellata''. Molecular data on ''H. stellata'' were provided in 2015 by Karadjian, Chavatte and Landau, from a 25-year-old archived smear of crushed tick ('' Amblyomma rotondatum''). ''Hepatozoon argantis'' Garnham, 1954 was reassigned to ''Hemolivia'' as '' Hemolivia argantis'' (Garnham, 1954) Karadjian, Chavatte and Landau, 2015. Characteristics of the genus The species in this genus are haemogregarines and infect exothermic vertebrates. They have erythrocytic gamogony, both erythrocytic and extra-erythrocytic merogony and cystogony. The definitive hosts are ixodid ticks. Sporogony occurs in two phases. In the first phase conjugation and fertilization occur within the tick gut. This is followed by the formation of oocysts and the generation of sporokinetes. In the second phase the sporokinetes i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Karyolysus
''Karyolysus'' is a genus of coccidia. With the exception of ''K. sonomae'' whose vertebrate host is the yellow-legged frog ('' Rana boylii boylii''), species in this genus only infect lizards of the genus ''Lacerta''. History The genus was created by Labbe in 1894 for those species of sporozoans that fragmented the host nucleus. Reichenow in 1921 established that this property was of dubious taxonomic value. He proposed a different set of criteria for inclusion in this genus and these are the one currently in use. The type species is ''Karyolysus lacertae'' . Characteristics of the genus Schizogeny occurs in the endothelial cells Gametogony occurs in the erythrocytes after their penetration by the merozoites. Differentiation from the genus '' Haemogregarina'' may be difficult as in both genera gametocytogenesis occurs in the erythrocytes and have similar morphology. They can be distinguished on the location of schizogony: In ''Karyolysus'' this occurs in the endothelial ce ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phylum
In biology, a phylum (; plural: phyla) is a level of classification or taxonomic rank below kingdom and above class. Traditionally, in botany the term division has been used instead of phylum, although the International Code of Nomenclature for algae, fungi, and plants accepts the terms as equivalent. Depending on definitions, the animal kingdom Animalia contains about 31 phyla, the plant kingdom Plantae contains about 14 phyla, and the fungus kingdom Fungi contains about 8 phyla. Current research in phylogenetics is uncovering the relationships between phyla, which are contained in larger clades, like Ecdysozoa and Embryophyta. General description The term phylum was coined in 1866 by Ernst Haeckel from the Greek (, "race, stock"), related to (, "tribe, clan"). Haeckel noted that species constantly evolved into new species that seemed to retain few consistent features among themselves and therefore few features that distinguished them as a group ("a self-contained unity" ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Apicomplexa
The Apicomplexa (also called Apicomplexia) are a large phylum of parasitic alveolates. Most of them possess a unique form of organelle that comprises a type of non-photosynthetic plastid called an apicoplast, and an apical complex structure. The organelle is an adaptation that the apicomplexan applies in penetration of a host cell. The Apicomplexa are unicellular and spore-forming. All species are obligate endoparasites of animals, except '' Nephromyces'', a symbiont in marine animals, originally classified as a chytrid fungus. Motile structures such as flagella or pseudopods are present only in certain gamete stages. The Apicomplexa are a diverse group that includes organisms such as the coccidia, gregarines, piroplasms, haemogregarines, and plasmodia. Diseases caused by Apicomplexa include: * Babesiosis (''Babesia'') * Malaria (''Plasmodium'') * Cryptosporidiosis (''Cryptosporidium parvum'') * Cyclosporiasis (''Cyclospora cayetanensis'') * Cystoisosporiasis (''Cystoisosp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
