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Polymorphus Minutus
''Polymorphus minutus'' is a species of Acanthocephala in the family Polymorphidae. They can grow up to 12.5 mm. It is an economically significant parasite in goose and duck farming. References Parasites Polymorphidae Acanthocephalans Taxa named by Johann August Ephraim Goeze Animals described in 1782 {{Acanthocephalan-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Johann August Ephraim Goeze
Johann August Ephraim Goeze (; 28 May 1731 – 27 June 1793) was a German zoologist, born in Aschersleben. He is known for the discovery of tardigrades, also called water bears. He was the son of Johann Heinrich and Catherine Margarete (née Kirchhoff). He studied theology at University of Halle. He married Leopoldine Maria Keller in 1770, by whom he had four children. In 1751, he became a pastor in Aschersleben, in Quedlinburg, and later of in Quedlinburg in 1762, finally becoming first deacon of the seminary of Quedlinburg in 1787. He died in Quedlinburg. He did much work with aquatic invertebrates, particularly insects and worms. In 1773, he was the first to describe tardigrades. In 1784, Goeze perceived the similarities between the heads of tapeworms found in the human intestinal tract and the invaginated heads of '' Cysticercus cellulosae'' in pigs. Works *Goeze, J. A. E. 1776. Verzeichnisse der Namen von Insecten und Wurmern, welche in dem Rosel, Kleemann und D ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acanthocephala
Acanthocephala (Greek , ', thorn + , ', head) is a phylum of parasitic worms known as acanthocephalans, thorny-headed worms, or spiny-headed worms, characterized by the presence of an eversible proboscis, armed with spines, which it uses to pierce and hold the gut wall of its host. Acanthocephalans have complex life cycles, involving at least two hosts, which may include invertebrates, fish, amphibians, birds, and mammals. About 1420 species have been described. The Acanthocephala were thought to be a discrete phylum. Recent genome analysis has shown that they are descended from, and should be considered as, highly modified rotifers. This unified taxon is known as Syndermata. History The earliest recognisable description of Acanthocephala – a worm with a proboscis armed with hooks – was made by Italian author Francesco Redi (1684).Crompton 1985, p. 27 In 1771, Joseph Koelreuter proposed the name Acanthocephala. Philipp Ludwig Statius Müller independently called ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polymorphidae
The thorny-headed worm family Polymorphidae contains endoparasites which as adults feed mainly in fish and aquatic birds. When this taxon was erected by Meyer in 1931, a subfamily Polymorphinae was established in it. As the Polymorphidae as presently understood would then be monotypic, with no basal genera outside the Polymorphinae, the proposed subfamily is redundant for the time being and therefore most modern treatments simply omit it. '' Polymorphus minutus'' is an economically significant parasite in goose and duck farming. Species Polymorphidae contains the following species: ''Andracantha'' Schmidt, 1975 *''Andracantha baylisi'' (Zdzitowiecki, 1986) Zdzitowiecki, 1989 *''Andracantha clavata'' (Goss, 1940) ''Andracantha gravida'' (Alegret, 1941) Schmidt, 1975 *''Andracantha mergi'' Lundström, 1942 *''Andracantha phalacrocoracis'' (Yamaguti, 1939) *''Andracantha tandemtesticulata'' Monteiro, Amato & Amato, 2006 *''Andracantha tunitae'' (Weiss, 1914) ''Ardeirhynchus'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Domestic Goose
A domestic goose is a goose that humans have domesticated and kept for their meat, eggs, or down feathers. Domestic geese have been derived through selective breeding from the wild greylag goose (''Anser anser domesticus'') and swan goose (''Anser cygnoides domesticus''). Origins In Europe, northern Africa, and western Asia, the original domesticated geese are derived from the greylag goose (''Anser anser''). In eastern Asia, the original domesticated geese are derived from the swan goose (''Anser cygnoides''); these are commonly known as Chinese geese. Both have been widely introduced in more recent times, and modern flocks in both areas (and elsewhere, such as Australia and North America) may consist of either species or hybrids between them. Chinese geese may be readily distinguished from European geese by the large knob at the base of the bill, though hybrids may exhibit every degree of variation between the two species. Charles Darwin remarked in ''The Variation of Anim ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Domestic Duck
The domestic duck or domestic mallard (''Anas platyrhynchos domesticus'') is a subspecies of mallard that has been domesticated by humans and raised for meat, eggs, and down feathers. A few are also kept for show, as pets, or for their ornamental value. Almost all varieties of domesticated ducks, apart from the domestic Muscovy duck (''Cairina moschata''), are descended from the mallard. Domestication Whole-genome sequencing indicate that domestic ducks originate from a single domestication event of mallards during the Neolithic, followed by rapid selection for lineages favoring meat or egg production. They were likely domesticated in Southeast Asia (most likely Southern China) by the rice paddy-farming ancestors of modern Southeast Asians. The date of domestication is unknown due to the scarcity of archaeological records. They spread outwards from the region, first being mentioned in Han Chinese written records in central China by around 500 BC. Duck farming for both meat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Parasites
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 honey fungus and the agents of ringworm; and plants such as mistletoe, dodder, and the broomrapes. There are six major parasitic strategies of exploitation of animal hosts, namely parasitic castration, directly transmitted parasitism (by contact), trophicallytransmitted parasitism (by being eaten), vector-transmitted parasitism, parasitoidism, and micropredation. One major axis of classification concerns invasiveness: an endoparasite lives inside the host's body ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acanthocephalans
Acanthocephala (Greek , ', thorn + , ', head) is a phylum of parasitic worms known as acanthocephalans, thorny-headed worms, or spiny-headed worms, characterized by the presence of an eversible proboscis, armed with spines, which it uses to pierce and hold the gut wall of its host. Acanthocephalans have complex life cycles, involving at least two hosts, which may include invertebrates, fish, amphibians, birds, and mammals. About 1420 species have been described. The Acanthocephala were thought to be a discrete phylum. Recent genome analysis has shown that they are descended from, and should be considered as, highly modified rotifers. This unified taxon is known as Syndermata. History The earliest recognisable description of Acanthocephala – a worm with a proboscis armed with hooks – was made by Italian author Francesco Redi (1684).Crompton 1985, p. 27 In 1771, Joseph Koelreuter proposed the name Acanthocephala. Philipp Ludwig Statius Müller independently called th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taxa Named By Johann August Ephraim Goeze
In biology, a taxon (back-formation from ''taxonomy''; plural taxa) is a group of one or more populations of an organism or organisms seen by taxonomists to form a unit. Although neither is required, a taxon is usually known by a particular name and given a particular ranking, especially if and when it is accepted or becomes established. It is very common, however, for taxonomists to remain at odds over what belongs to a taxon and the criteria used for inclusion. If a taxon is given a formal scientific name, its use is then governed by one of the nomenclature codes specifying which scientific name is correct for a particular grouping. Initial attempts at classifying and ordering organisms (plants and animals) were set forth in Carl Linnaeus's system in ''Systema Naturae'', 10th edition (1758), as well as an unpublished work by Bernard and Antoine Laurent de Jussieu. The idea of a unit-based system of biological classification was first made widely available in 1805 in the intr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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