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Varroidae
''Varroa'' is a genus of parasitic mesostigmatan mites associated with honey bees, placed in its own family, Varroidae. The genus was named for Marcus Terentius Varro, a Roman scholar and beekeeper. The condition of a honeybee colony being infested with ''Varroa'' mites is called varroosis (also, incorrectly, varroatosis). ''Varroa'' mites, specifically the species ''Varroa destructor'', are recognised as the biggest pest to honeybees worldwide due to their ability to transmit diseases such as deformed wing virus (or DWV) to larval or pupating bees, resulting in death or severe deformity of the pupae. History and behavior ''Varroa'' mites feed off the fat body tissue of adult, pupal, and larval honey bees, and may carry viruses that are particularly damaging to the bees (e.g., deformed wings, and IAPV), and accordingly they have been implicated in colony collapse disorder. Research has indicated that alone, neither ''Varroa'' mites nor deformed wing virus are particularly de ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Varroa Sinhai
''Varroa'' is a genus of parasitic mesostigmatan mites associated with honey bees, placed in its own family, Varroidae. The genus was named for Marcus Terentius Varro Marcus Terentius Varro (; 116–27 BC) was a Roman polymath and a prolific author. He is regarded as ancient Rome's greatest scholar, and was described by Petrarch as "the third great light of Rome" (after Vergil and Cicero). He is sometimes calle ..., a Roman scholar and beekeeper. The condition of a honeybee colony being infested with ''Varroa'' mites is called Varroa destructor#Varroosis, varroosis (also, incorrectly, varroatosis). ''Varroa'' mites, specifically the species ''Varroa destructor'', are recognised as the biggest pest to honeybees worldwide due to their ability to transmit diseases such as deformed wing virus (or DWV) to larval or pupating bees, resulting in death or severe deformity of the pupae. History and behavior ''Varroa'' mites feed off the fat body tissue of adult, pupal, and larval honey ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Varroa Destructor
''Varroa destructor'', the ''Varroa'' mite is an external parasitic mite that attacks and feeds on the honey bees ''Apis cerana'' and ''Apis mellifera''. The disease caused by the mites is called varroosis. The ''Varroa'' mite can reproduce only in a honey bee colony. It attaches to the body of the bee and weakens the bee by sucking fat bodies. The species is a vector for at least five debilitating bee viruses, including RNA viruses such as the deformed wing virus (DWV). A significant mite infestation leads to the death of a honey bee colony, usually in the late autumn through early spring. The ''Varroa'' mite is the parasite with possibly the most pronounced economic impact on the beekeeping industry. ''Varroa'' is considered to be one of multiple stress factors contributing to the higher levels of bee losses around the world. Physical description File:Varroa destructor protonymph (5048063601).jpg, ''V. destructor'' protonymph File:Varroa destructor deutonymph.jpg, Deutonymph ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mesostigmata
Mesostigmata is an order of mites belonging to the Parasitiformes. They are by far the largest group of Parasitiformes, with over 8,000 species in 130 families. Mesostigmata includes parasitic as well as free-living and predatory forms. They can be recognized by the single pair of spiracles positioned laterally on the body. The family with the most described species is Phytoseiidae. Other families of note are Diplogyniidae, Macrochelidae, Pachylaelapidae, Uropodidae and Veigaiidae. Amongst the best known species are '' Varroa destructor'', an economically important parasite of honey bees, as well as the red mite (''Dermanyssus gallinae'') a parasite of poultry, most commonly chickens. Description Mesostigmata are mites ranging from 0.12-4 mm long (0.2-4 mm according to another source). They have a pair of stigmatal openings above legs III-IV usually associated with a peritrematal groove. The gnathosoma has a sclerotised ring around the bases of the chelicerae (basis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Diseases Of The Honey Bee
Diseases of the honey bee or abnormal hive conditions include: Pests and parasites ''Varroa'' mites '' Varroa destructor'' and ''V. jacobsoni'' are parasitic mites that feed on the fat bodies of adult, pupal and larval bees. When the hive is very heavily infested, '' Varroa'' mites can be seen with the naked eye as a small red or brown spot on the bee's thorax. ''Varroa'' mites are carriers for many viruses that are damaging to bees. For example, bees infected during their development will often have visibly deformed wings. ''Varroa'' mites have led to the virtual elimination of feral bee colonies in many areas, and are a major problem for kept bees in apiaries. Some feral populations are now recovering—it appears they have been naturally selected for ''Varroa'' resistance. ''Varroa'' mites were first discovered in Southeast Asia in about 1904, but are now present on all continents except Australia. They were discovered in the United States in 1987, in New Zealand in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Varroa Jacobsoni
''Varroa jacobsoni'' is a species of mite that parasitises ''Apis cerana'' (Asian honey bees). The more damaging ''Varroa destructor'' was previously included under the name ''V. jacobsoni'', but the two species can be separated on the basis of the DNA sequence of the cytochrome oxidase I gene in the mitochondrial DNA. Biogeography Prior to recent studies, ''V. jacobsoni'' was considered homogeneous; however, current research has detected genetic variance among populations by using genetic markers. This finding has led to the belief that ''V. jacobsoni'' was introduced to the Americas multiple times. The hosts switching between the eastern ''A. cerana'' and the western ''A. mellifera'' is the major factor that broadens the pathological transmission of ''V. jacobsoni''. It has spread worldwide with the exception of Australia and central Africa. Evolution At least 30 lineages of mites have specialised in living with bees. Most mite species associa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Newcastle Weekly
Newcastle usually refers to: *Newcastle upon Tyne, a city and metropolitan borough in Tyne and Wear, England *Newcastle-under-Lyme, a town in Staffordshire, England *Newcastle, New South Wales, a metropolitan area in Australia, named after Newcastle upon Tyne Newcastle, New Castle or New Cassel may also refer to: Places Australia *City of Newcastle, a local government area in New South Wales * County of Newcastle, a cadastral unit in South Australia * Division of Newcastle, a federal electoral division in New South Wales *Electoral district of Newcastle, an electoral district of the New South Wales Legislative Assembly *Electoral district of Newcastle (South Australia) 1884–1902, 1915–1956 in the South Australian House of Assembly *Newcastle, New South Wales, a city in New South Wales * Newcastle Waters, a town and locality in the Northern Territory * Newcastle West, New South Wales, inner suburb of the city * Toodyay, Western Australia, known as Newcastle until 1910 Canada * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Port Of Newcastle
The Port of Newcastle is a major seaport in the city of Newcastle, New South Wales, Australia. It is the world's largest coal port. It is made up of facilities located at Port Hunter - Yohaaba in the Hunter River estuary. The port was the first commercial export port in Australia and is the world's busiest coal export port. Annual exports of coal from Newcastle exceeded A$15 billion in 2012–13. Newcastle berthed more than 2,200 ships a year in 2012–13. The port's harbourmaster is the Port Authority of New South Wales. Cargo facilities are operated by Port Waratah Coal Services and Newcastle Coal Infrastructure Group at Kooragang Island, as well as other operators at Mayfield, Carrington and Walsh Point. There are plans to build a cruise terminal. In April 2014 Premier Mike Baird and Treasurer Andrew Constance announced that a "a consortium which comprises Hastings Funds Management and Chinese state-owned China Merchants" had successfully bid $1.75 billion fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Experimental And Applied Acarology
''Experimental and Applied Acarology'' is a monthly peer-reviewed scientific journal covering all aspects of acarology. It was established in 1985 and is published by Springer Science+Business Media. The editor-in-chief is Maurice W. Sabelis (University of Amsterdam The University of Amsterdam (abbreviated as UvA, nl, Universiteit van Amsterdam) is a public research university located in Amsterdam, Netherlands. The UvA is one of two large, publicly funded research universities in the city, the other bein ...). Abstracting and indexing The journal is abstracted and indexed in: External links * Acarology journals English-language journals Springer Science+Business Media academic journals Publications established in 1985 Monthly journals {{zoo-journal-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Australia
Australia, officially the Commonwealth of Australia, is a sovereign ''Sovereign'' is a title which can be applied to the highest leader in various categories. The word is borrowed from Old French , which is ultimately derived from the Latin , meaning 'above'. The roles of a sovereign vary from monarch, ruler or ... country comprising the mainland of the Australian continent, the island of Tasmania, and numerous smaller islands. With an area of , Australia is the largest country by area in Oceania and the world's sixth-largest country. Australia is the oldest, flattest, and driest inhabited continent, with the least fertile soils. It is a megadiverse country, and its size gives it a wide variety of landscapes and climates, with deserts in the centre, tropical Forests of Australia, rainforests in the north-east, and List of mountains in Australia, mountain ranges in the south-east. The ancestors of Aboriginal Australians began arriving from south east Asia approx ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United Kingdom
The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a country in Europe, off the north-western coast of the European mainland, continental mainland. It comprises England, Scotland, Wales and Northern Ireland. The United Kingdom includes the island of Great Britain, the north-eastern part of the island of Ireland, and many List of islands of the United Kingdom, smaller islands within the British Isles. Northern Ireland shares Republic of Ireland–United Kingdom border, a land border with the Republic of Ireland; otherwise, the United Kingdom is surrounded by the Atlantic Ocean, the North Sea, the English Channel, the Celtic Sea and the Irish Sea. The total area of the United Kingdom is , with an estimated 2020 population of more than 67 million people. The United Kingdom has evolved from a series of annexations, unions and separations of constituent countries over several hundred years. The Treaty of Union between ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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