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Paraplasmodium
''Paraplasmodium'' is a subgenus of the genus ''Plasmodium'' - all of which are parasitic eukaryotes. The subgenus was created by Telford in 1988. Species in this subgenus infect lizards. Species *''Plasmodium chiricahuae'' *''Plasmodium mexicanum'' *''Plasmodium pifanoi'' Description Species in the subgenus ''Paraplasmodium'' have the following characteristics: The gametocytes are large. The schizonts are medium size. Exoerythrocytic schizonts may be produced in both fixed and wandering host cells. Note: One species (''Plasmodium mexicanum'') in this genus can undergo normal sporogony in a psychodid fly (''Lutzomyia vexatrix''). References Plasmodium subgenera {{plasmodium-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plasmodium
''Plasmodium'' is a genus of unicellular eukaryotes that are obligate parasites of vertebrates and insects. The life cycles of ''Plasmodium'' species involve development in a blood-feeding insect host which then injects parasites into a vertebrate host during a blood meal. Parasites grow within a vertebrate body tissue (often the liver) before entering the bloodstream to infect red blood cells. The ensuing destruction of host red blood cells can result in malaria. During this infection, some parasites are picked up by a blood-feeding insect (mosquitoes in majority cases), continuing the life cycle. ''Plasmodium'' is a member of the phylum Apicomplexa, a large group of parasitic eukaryotes. Within Apicomplexa, ''Plasmodium'' is in the order Haemosporida and family Plasmodiidae. Over 200 species of ''Plasmodium'' have been described, many of which have been subdivided into 14 subgenera based on parasite morphology and host range. Evolutionary relationships among different ''Pl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plasmodium Chiricahuae
''Plasmodium chiricahuae'' is a parasite of the genus ''Plasmodium'' subgenus ''Paraplasmodium''. Like all ''Plasmodium'' species ''P. chiricahuae'' has both vertebrate and insect hosts. The vertebrate hosts for this parasite are reptiles. Description The schizonts rarely exceed the size of the nucleus of the cell and produce 4-10 merozoites. The gametocytes are large (3-6 times the size of the nucleus of an uninfected cell) and almost fill the erythrocyte Red blood cells (RBCs), also referred to as red cells, red blood corpuscles (in humans or other animals not having nucleus in red blood cells), haematids, erythroid cells or erythrocytes (from Greek ''erythros'' for "red" and ''kytos'' for "holl .... Distribution This species is found in the south-western United States and probably also in northern Mexico. Hosts This species infects spiny lizards of the genus '' Sceloporus''. References Further reading * chiricahuae {{plasmodium-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plasmodium Mexicanum
''Plasmodium mexicanum'' is a parasite of the genus ''Plasmodium'' subgenus ''Paraplasmodium''. Like all ''Plasmodium'' species ''P. mexicanum'' has both vertebrate and insect hosts. The vertebrate hosts for this parasite are reptiles. Taxonomy The parasite was first described by Thompson and Huff in 1944.Thompson P.E. and Huff C.G. (1944) Saurian malaria parasites of the United States and Mexico. J. Inf. Dis. 74:68–79. Distribution This parasite is found in Arizona, United States. Hosts This parasite infects the '' Sceloporus ferraripezi'', '' Sceloporus horridus'', '' Sceloporus microlepidotus'', western fence lizard (''Sceloporus occidentalis''), '' Sceloporus pyrocephalus'', ''Sceloporus variabilis'', '' Scleroporus torquatus torquatus'' and the tree lizard (''Urosaurus ornatus ''Urosaurus ornatus'', commonly known as the ornate tree lizard, is a species of lizard in the family Phrynosomatidae. The species is native to the southwestern United States and north ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plasmodium Pifanoi
''Plasmodium pifanoi'' is a parasite of the genus ''Plasmodium'' subgenus ''Paraplasmodium''. As in all ''Plasmodium'' species, ''P. pifanoi'' has both vertebrate and insect hosts. The vertebrate hosts for this parasite are lizards. Taxonomy This species was first described by Scorza and Dagert in 1956. It was redescribed in 2003 by Telford.Telford S. R. Jr., Telford S.R. III (2003) Rediscovery and redescription of ''Plasmodium pifanoi'' and description of two additional ''Plasmodium'' parasites of Venezuelan lizards. J. Parasitol. 89(2) 362–368 Description The asexual stages are irregular in shape and do not have a vacuole. Schizonts measure 6.2 × 4.5 micrometres (range: 4 – 8 × 3 – 6) and produce on average 11.9 (range: 7 – 16) merozoites. Gametocytes average 12.4 × 6.0 micrometres (range: 8 – 16 × 4 – 10). The average length × width product is 72.9 (range: 52 – 112) and the average length / width ratio is 2.18 (range: 1.1 – 3.3). The gametocytes alw ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genus
Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus comes above species and below family (taxonomy), family. In binomial nomenclature, the genus name forms the first part of the binomial species name for each species within the genus. :E.g. ''Panthera leo'' (lion) and ''Panthera onca'' (jaguar) are two species within the genus ''Panthera''. ''Panthera'' is a genus within the family Felidae. The composition of a genus is determined by taxonomy (biology), taxonomists. The standards for genus classification are not strictly codified, so different authorities often produce different classifications for genera. There are some general practices used, however, including the idea that a newly defined genus should fulfill these three criteria to be descriptively useful: # monophyly – all descendants ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eukaryote
Eukaryotes () are organisms whose cells have a nucleus. All animals, plants, fungi, and many unicellular organisms, are Eukaryotes. They belong to the group of organisms Eukaryota or Eukarya, which is one of the three domains of life. Bacteria and Archaea (both prokaryotes) make up the other two domains. The eukaryotes are usually now regarded as having emerged in the Archaea or as a sister of the Asgard archaea. This implies that there are only two domains of life, Bacteria and Archaea, with eukaryotes incorporated among archaea. Eukaryotes represent a small minority of the number of organisms, but, due to their generally much larger size, their collective global biomass is estimated to be about equal to that of prokaryotes. Eukaryotes emerged approximately 2.3–1.8 billion years ago, during the Proterozoic eon, likely as flagellated phagotrophs. Their name comes from the Greek εὖ (''eu'', "well" or "good") and κάρυον (''karyon'', "nut" or "kernel"). Euka ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Species
In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. Other ways of defining species include their karyotype, DNA sequence, morphology, behaviour or ecological niche. In addition, paleontologists use the concept of the chronospecies since fossil reproduction cannot be examined. The most recent rigorous estimate for the total number of species of eukaryotes is between 8 and 8.7 million. However, only about 14% of these had been described by 2011. All species (except viruses) are given a two-part name, a "binomial". The first part of a binomial is the genus to which the species belongs. The second part is called the specific name or the specific epithet (in botanical nomenclature, also sometimes i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lizard
Lizards are a widespread group of squamate reptiles, with over 7,000 species, ranging across all continents except Antarctica, as well as most oceanic island chains. The group is paraphyletic since it excludes the snakes and Amphisbaenia although some lizards are more closely related to these two excluded groups than they are to other lizards. Lizards range in size from chameleons and geckos a few centimeters long to the 3-meter-long Komodo dragon. Most lizards are quadrupedal, running with a strong side-to-side motion. Some lineages (known as "legless lizards"), have secondarily lost their legs, and have long snake-like bodies. Some such as the forest-dwelling ''Draco'' lizards are able to glide. They are often territorial, the males fighting off other males and signalling, often with bright colours, to attract mates and to intimidate rivals. Lizards are mainly carnivorous, often being sit-and-wait predators; many smaller species eat insects, while the Komodo eats mammals a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lutzomyia Vexatrix
''Lutzomyia'' is a genus of phlebotomine sand flies consisting of nearly 400 species, at least 33 of which have medical importance as vectors of human disease. Species of the genus ''Lutzomyia'' are found only in the New World, distributed in southern areas of the Nearctic and throughout the Neotropical realm. ''Lutzomyia'' is one of the two genera of the subfamily Phlebotominae to transmit the Leishmania parasite, with the other being ''Phlebotomus'', found only in the Old World. ''Lutzomyia'' sand flies also serve as vectors for the bacterial Carrion's disease and a number of arboviruses. Evolution The genus, named after Adolfo Lutz, is known from the extinct Burdigalian (20-15 mya) species ''Lutzomyia adiketis'' found as a fossil in Dominican amber on the island of Hispaniola. It is thought that species in the genus ''Lutzomyia'' all originated in the lowland forests to the east of the Andes mountain range, and that their radiation throughout the Neotropics was sparked by ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
