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Paragonimus Skrjabini
''Paragonimus skrjabini'' is classified as a species in the genus ''Paragonimus'', which consists of many species of lung flukes that result in the food-borne parasitic disease paragonimiasis. Introduction Scientists have identified ''P. skrjabini,'' along with several other species including ''P. westermani'' and ''P. miyazakii,'' to be key pathogens in causing paragonimiasis in humans, primarily in Asian regions of the world. ''P. skrjabini'' is especially prevalent in 26 provinces in China with cases appearing more recently in India and Vietnam as well. From a morphological and genetic standpoint, ''P. skrjabini'' is most closely related to the species ''P. miyazakii,'' so much so that two sub-species have been classified separately within the ''P. skrjabini'' complex: ''P. skrjabini skrjabini'' and ''P. skrjabini miyazakii''. Doanh PN (2007) establishes the importance of learning more about ''P. skrjabini,'' asserting that "among ''Paragonimus'' species, ''P. westermani'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paragonimus
''Paragonimus'' is a genus of flukes (trematodes) and is the only genus in the monotypic family Paragonimidae. Some tens of species have been described, but they are difficult to distinguish, so it is not clear how many of the named species may be synonyms. The name Paragonimus is derived from the combination of two Greek words, “para” (on the side of) and “gonimos” (gonads or genitalia). Several of the species are known as lung flukes. In humans some of the species occur as zoonoses; the term for the condition is paragonimiasis. The first intermediate hosts of ''Paragonimus'' include at least 54 species of freshwater snails from superfamilies Cerithioidea and Rissooidea. The most prominent species of Paragonimus in human medicine is '' Paragonimus westermani'', an infectious lung fluke originating in eastern Asia. Worldwide, about nine species of ''Paragonimus'' are known to cause human paragonimiasis in which many of the species reside in East Asia, West Africa, and in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lung Fluke
''Paragonimus'' is a genus of flukes (trematodes) and is the only genus in the monotypic family Paragonimidae. Some tens of species have been described, but they are difficult to distinguish, so it is not clear how many of the named species may be synonyms. The name Paragonimus is derived from the combination of two Greek words, “para” (on the side of) and “gonimos” (gonads or genitalia). Several of the species are known as lung flukes. In humans some of the species occur as zoonoses; the term for the condition is paragonimiasis. The first intermediate hosts of ''Paragonimus'' include at least 54 species of freshwater snails from superfamilies Cerithioidea and Rissooidea. The most prominent species of Paragonimus in human medicine is ''Paragonimus westermani'', an infectious lung fluke originating in eastern Asia. Worldwide, about nine species of ''Paragonimus'' are known to cause human paragonimiasis in which many of the species reside in East Asia, West Africa, and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paragonimiasis
Paragonimiasis is a food-borne parasitic disease caused by several species of lung flukes belonging to genus ''Paragonimus''. Infection is acquired by eating crustaceans such as crabs and crayfishes which host the infective forms called metacercariae, or by eating raw or undercooked meat of mammals harboring the metacercariae from crustaceans. More than 40 species of ''Paragonimus'' have been identified; 10 of these are known to cause disease in humans. The most common cause of human paragonimiasis is '' P. westermani'', the oriental lung fluke. About 22 million people are estimated to be affected yearly worldwide. It is particularly common in East Asia. Paragonimiasis is easily mistaken for other diseases with which it shares clinical symptoms, such as tuberculosis and lung cancer. Life cycle Not all ''Paragonimus'' species infect humans. However, all of them target mammals as their final (definitive) hosts. In mammalian lung tissue, the adult flukes live as encapsulated pairs. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Constantin Scriabine
Konstantin Ivanovich Skryabin (russian: Константин Иванович Скрябин; – 17 September 1972) was a Soviet scientist in the field of Helminthology, academician of the USSR Academy of Sciences (1939), (in Russian) academician of USSR Academy of Medical Sciences, (1958), winner of and Lenin Prize. He was a founder of the helminthology school, and an author of landmark books o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nanhaipotamon
''Nanhaipotamon'' is a genus of freshwater crabs, in the subfamily Potamiscinae, found in southern China and Taiwan. As of 2018, 18 species have been described. The genus is named after the South China Sea (; literally: 'South Sea'), for it occurs mostly in coastal areas. Description These crabs are relatively large, with a carapace breadth of up to . Depending on the species, the carapace may be vividly coloured, especially in males of '' N. hongkongense'' (orange to red),'''' '' N. aculatum'' (dark blue) and '' N. zhuhaiense'' (light blue). Chelipeds are usually unequal, more so in larger males, where one cheliped is relatively much larger than the other. This may be of use in territorial fights, as the crabs are very aggressive towards conspecifics.'''' Distribution and habitat Crabs of the genus ''Nanhaipotamon'' inhabit the banks of small to medium-sized hill streams, paddy fields and swamps. Although not particularly a lowland species, they usually do not occur abov ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mammalian Reproduction
Most mammals are viviparous, giving birth to live young. However, the five species of monotreme, the platypuses and the echidnas, lay eggs. The monotremes have a sex determination system different from that of most other mammals. In particular, the sex chromosomes of a platypus are more like those of a chicken than those of a therian mammal. The mammary glands of mammals are specialized to produce milk, a liquid used by newborns as their primary source of nutrition. The monotremes branched early from other mammals and do not have the teats seen in most mammals, but they do have mammary glands. The young lick the milk from a mammary patch on the mother's belly. Viviparous mammals are in the subclass Theria; those living today are in the Marsupialia and Placentalia infraclasses. A marsupial has a short gestation period, typically shorter than its estrous cycle, and gives birth to an underdeveloped (altricial) newborn that then undergoes further development; in many species, this ta ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Animals Described In 1959
Animals are multicellular, eukaryotic organisms in the biological kingdom Animalia. With few exceptions, animals consume organic material, breathe oxygen, are able to move, can reproduce sexually, and go through an ontogenetic stage in which their body consists of a hollow sphere of cells, the blastula, during embryonic development. Over 1.5 million living animal species have been described—of which around 1 million are insects—but it has been estimated there are over 7 million animal species in total. Animals range in length from to . They have complex interactions with each other and their environments, forming intricate food webs. The scientific study of animals is known as zoology. Most living animal species are in Bilateria, a clade whose members have a bilaterally symmetric body plan. The Bilateria include the protostomes, containing animals such as nematodes, arthropods, flatworms, annelids and molluscs, and the deuterostomes, containing the echinoderms and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
