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Pentastomida
The Pentastomida are an enigmatic group of parasitic arthropods commonly known as tongue worms due to the resemblance of the species of the genus ''Linguatula'' to a vertebrate tongue; molecular studies point to them being degenerate crustaceans. About 130 species of pentastomids are known; all are obligate parasites with correspondingly degenerate anatomy. Adult tongue worms vary from about in length, and parasitise the respiratory tracts of vertebrates. They have five anterior appendages. One is the mouth; the others are two pairs of hooks, which they use to attach to the host. This arrangement led to their scientific name, meaning "five openings", but although the appendages are similar in some species, only one is a mouth. Taxonomy Historically significant accounts of tongue worm biology and systematics include early work by Josef Aloys Frölich, Alexander von Humboldt, Karl Asmund Rudolphi, Karl Moriz Diesing and Rudolph Leuckart. Other important summaries have been publ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pentastomida
The Pentastomida are an enigmatic group of parasitic arthropods commonly known as tongue worms due to the resemblance of the species of the genus ''Linguatula'' to a vertebrate tongue; molecular studies point to them being degenerate crustaceans. About 130 species of pentastomids are known; all are obligate parasites with correspondingly degenerate anatomy. Adult tongue worms vary from about in length, and parasitise the respiratory tracts of vertebrates. They have five anterior appendages. One is the mouth; the others are two pairs of hooks, which they use to attach to the host. This arrangement led to their scientific name, meaning "five openings", but although the appendages are similar in some species, only one is a mouth. Taxonomy Historically significant accounts of tongue worm biology and systematics include early work by Josef Aloys Frölich, Alexander von Humboldt, Karl Asmund Rudolphi, Karl Moriz Diesing and Rudolph Leuckart. Other important summaries have been publ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Richard Heymons
Richard Heymons (29 May 1867 – 1 December 1943) was a German zoologist and entomologist. He studied in Humboldt University of Berlin from 1886 to 1891 and provided overall direction of the Institute of Zoology at the higher educational farm in Berlin from 1915 to 1935. Heymons actively studied tongue worms (Pentastomida) and his collection of these animals is held in the Museum für Naturkunde Berlin. He also coined the name Chelicerata for arachnids and their relatives. Publications Monographs * ''The development of the female reproductive organs of Phyllodromica (Blatta) germanica L.'' 1891 * ''On the origin of the sex cells in insects'' . 1893 * ''The segmentation of the insect body'' . 1895. (2010, ) * ''The embryonic development of dermaptera ( earwigs ) and orthoptera ( locusts ) – with special reference to cotyledon formation'' . 1895. (2009, ) * ''Principles of development and physique of Odonata ( Odonata ) and Ephemeris ( Mayflies )'' . 1896 * ''A contribution ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arthropods
Arthropods (, (gen. ποδός)) are invertebrate animals with an exoskeleton, a Segmentation (biology), segmented body, and paired jointed appendages. Arthropods form the phylum Arthropoda. They are distinguished by their jointed limbs and Arthropod cuticle, cuticle made of chitin, often Mineralization (biology), mineralised with calcium carbonate. The arthropod body plan consists of segments, each with a pair of appendages. Arthropods are bilaterally symmetrical and their body possesses an exoskeleton, external skeleton. In order to keep growing, they must go through stages of moulting, a process by which they shed their exoskeleton to reveal a new one. Some species have wings. They are an extremely diverse group, with up to 10 million species. The haemocoel, an arthropod's internal cavity, through which its haemolymph – analogue of blood – circulates, accommodates its interior Organ (anatomy), organs; it has an open circulatory system. Like their exteriors, the internal or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crustacean
Crustaceans (Crustacea, ) form a large, diverse arthropod taxon which includes such animals as decapods, seed shrimp, branchiopods, fish lice, krill, remipedes, isopods, barnacles, copepods, amphipods and mantis shrimp. The crustacean group can be treated as a subphylum under the clade Mandibulata. It is now well accepted that the hexapods emerged deep in the Crustacean group, with the completed group referred to as Pancrustacea. Some crustaceans (Remipedia, Cephalocarida, Branchiopoda) are more closely related to insects and the other hexapods than they are to certain other crustaceans. The 67,000 described species range in size from '' Stygotantulus stocki'' at , to the Japanese spider crab with a leg span of up to and a mass of . Like other arthropods, crustaceans have an exoskeleton, which they moult to grow. They are distinguished from other groups of arthropods, such as insects, myriapods and chelicerates, by the possession of biramous (two-parted) limbs, and by th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Karl Moriz Diesing
Karl (Carl) Moriz (Moritz) Diesing (16 June 1800, in Krakow – 10 January 1867, in Vienna) was an Austrian naturalist and zoologist, specializing in the study of helminthology. He studied medicine at the University of Vienna, earning his doctorate in 1826. Afterwards, he served as an assistant to botanist Nikolaus Joseph von Jacquin, later working as an intern at the ''Hof-Naturalien-Cabinet'' (from 1829). In 1836 he became a curator of the zoological collections. In the late 1840s, he began to suffer from serious eye problems, and shortly afterwards experienced permanent blindness. His principal works include ''Systema Helminthum'' (2 vols., 1850–1851), and ''Revision der Nematoden'' (1861). In his paper "''Versuch einer monographie der Gattung Pentastoma''" (Ann. Wien Mus. Naturges. 1836, 1–32), he was the first to establish the distinct nature of the Pentastomida, placing them in a new group which he called Acanthotheca. The genera ''Diesingia'' and ''Diesingiella'' < ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Linguatula Serrata
''Linguatula serrata'' is a species of cosmopolitan zoonotic parasite, belonging to the tongueworm order Pentastomida. They are wormlike parasites of the respiratory systems of vertebrates. They live in the nasopharyngeal region of mammals. Cats, dogs, foxes, and other carnivores are normal hosts of this parasite. Apparently, almost any mammal is a potential intermediate host. Description The adult parasite is dorsoventrally flattened, tapering backwards resembling a vertebrate tongue, thus, inspiring the common name of "tongueworm." Physical characteristics: males: in length, while the females are . Distribution ''L. serrata'' can be found worldwide but especially in warm subtropical and temperate regions. Behavior and ecology Life cycle Adult ''L. serrata'' embed their forebody into the nasopharyngeal mucosa, feeding on blood and fluids. Females live at least two years and produce millions of eggs. Eggs exit the host in nasal secretion or, if swallowed, with feces. Wh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Louis Westenra Sambon
Louis Westenra Sambon (original first name Luigi, 7 November 1867 – 30 August 1931) was an Italian-English physician who played important roles in understanding the causes ( etiology) of diseases. He described many pathogenic protozoans, insects, and helminths including the name '' Schistosoma mansoni'' for a blood fluke. He was an authority on the classification of parasitic tongue worms called Pentastomida (Linguatulida), and one of the genus ''Sambonia'' is named after him. Sambon was born in Milan, Italy, and obtained an M.D. from the University of Naples Federico II. He moved to England to work at the Liverpool School of Tropical Medicine. He originated theories on the nature of diseases such as sleeping sickness, malaria, pellagra, and cancer. Biography Sambon was born in Milan to an Italian father and an English mother. His father was an Italian soldier Commendatore (Commander) Jules Sambon, and her mother, Laura Elizabeth Day, was a distant relative of Charles Dickens. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Parasite
Parasitism is a close relationship between species, where one organism, the parasite, lives on or inside another organism, the host, causing it some harm, and is adapted structurally to this way of life. The entomologist E. O. Wilson has characterised parasites as "predators that eat prey in units of less than one". Parasites include single-celled protozoans such as the agents of malaria, sleeping sickness, and amoebic dysentery; animals such as hookworms, lice, mosquitoes, and vampire bats; fungi such as Armillaria mellea, honey fungus and the agents of ringworm; and plants such as mistletoe, dodder, and the Orobanchaceae, broomrapes. There are six major parasitic Behavioral ecology#Evolutionarily stable strategy, strategies of exploitation of animal hosts, namely parasitic castration, directly transmitted parasitism (by contact), wikt:trophic, trophicallytransmitted parasitism (by being eaten), Disease vector, vector-transmitted parasitism, parasitoidism, and micropreda ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Respiratory Tract
The respiratory tract is the subdivision of the respiratory system involved with the process of respiration in mammals. The respiratory tract is lined with respiratory epithelium as respiratory mucosa. Air is breathed in through the nose to the nasal cavity, where a layer of nasal mucosa acts as a filter and traps pollutants and other harmful substances found in the air. Next, air moves into the pharynx, a passage that contains the intersection between the oesophagus and the larynx. The opening of the larynx has a special flap of cartilage, the epiglottis, that opens to allow air to pass through but closes to prevent food from moving into the airway. From the larynx, air moves into the trachea and down to the intersection known as the carina that branches to form the right and left primary (main) bronchi. Each of these bronchi branches into a secondary (lobar) bronchus that branches into tertiary (segmental) bronchi, that branch into smaller airways called bronchioles that ev ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eriophyidae
Eriophyidae is a family of more than 200 genera of mites, which live as plant parasites, commonly causing galls or other damage to the plant tissues and hence known as gall mites. About 3,600 species have been described, but this is probably less than 10% of the actual number existing in this poorly researched family. They are microscopic mites and are yellow to pinkish white to purplish in color. The mites are worm like, and have only two pairs of legs. Their primary method of population spread is by wind. They affect a wide range of plants, and several are major pest species causing substantial economic damage to crops. Some species, however, are used as biological agents to control weeds and invasive plant species. Notable species Notable species in this family include: *''Abacarus hystrix'', the cereal rust mite *'' Abacarus sacchari'', the sugarcane rust mite *'' Acalitus essigi'', the redberry mite, which affects blackberries *''Aceria chondrillae'', the chondrilla gall ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pierre-Joseph Van Beneden
Pierre-Joseph van Beneden FRS FRSE FGS FZS (19 December 1809 – 8 January 1894) was a Belgian zoologist and paleontologist. Life Born in Mechelen, Belgium, he studied medicine at the State University of Leuven, and studied zoology in Paris under Georges Cuvier (1769–1832). In 1831 he became curator at the natural history museum in Leuven, and from 1836 until 1894 was a professor of zoology at the Catholic University of Leuven. In 1842 he became a member of the ''Académie des sciences de Belgique'', becoming its President in 1881. In 1875 became a foreign member of the Royal Society of London and in 1884 an Honorary Fellow of the Royal Society of Edinburgh. In 1843 he established one of the world's first marine laboratories and aquariums. He was the father of biologist Edouard van Beneden (1846–1910). Pierre-Joseph van Beneden died in Leuven, Belgium. Scientific work Van Beneden was a specialist in the field of parasitology, being known for his comprehensive studies on ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zoologischer Anzeiger
''Zoologischer Anzeiger – A Journal of Comparative Zoology'' is a peer-reviewed scientific journal specialising in the field of comparative zoology. It is included in a number of bibliographic databases: * Animal Breeding Abstracts * Bio-Control News and Information *Biological Abstracts *BIOSIS * CAB Abstracts *Cambridge Scientific Abstracts *Chemical Abstracts * Current Advances in Ecological and Environmental Sciences * Current Contents, Agriculture, Biology & Environmental Sciences * Ecological Abstracts *Elsevier BIOBASE / Current Awareness in Biological Sciences *Elsevier GEO Abstracts * Fisheries Review *Geo Abstracts *GEOBASE * Helminthological Abstracts * Index Veterinarius *NISC - National Information Services Corporation *Oceanographic Literature Review *Referativnyi Zhurnal *Research Alert *Science Citation Index * SciExpanded * SciSearch *Scopus Scopus is Elsevier's abstract and citation database launched in 2004. Scopus covers nearly 36,377 titles (22,794 ac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
