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Betairidovirinae
''Betairidovirinae'' is a subfamily of viruses in the family ''Iridoviridae'' that was established in 2016. It is one of two subfamilies within this family, the other being '' Alphairdovirinae''. Most species within the ''Betairidovirinae'' are hosted by invertebrates, whereas all species within the ''Alphairdovirinae'' are hosted by ' cold-blooded' vertebrates (namely; fishes, amphibians, and reptiles). As such, viruses in this subfamily may be called invertebrate iridescent viruses (IIVs) or invertebrate iridoviruses. Genera The genus consists of the following four genera, although many additional putative and partially characterised taxa are known: * ''Chloriridovirus'' * '' Daphniairidovirus'' * '' Decapodiridovirus'' * ''Iridovirus'' Hosts The ''Betairidovirinae'' are hosted by invertebrates, but some research indicates they may hosted by vertebrates, and that at least one invertebrate-hosted iridovirus is actually more closely related to the ''Alphairdovirinae''. Most ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Invertebrate Iridescent Virus 31
''Invertebrate iridescent virus 31'' (IIV-31), also known informally as isopod iridovirus, is a species of invertebrate iridescent virus in the genus ''Iridovirus''. Oniscidea (commonly known by a variety of names including ''woodlouse'', ''pillbug'', ''slater'', ''rolly-polly'', ''potato bug'', et al.) serve as hosts. Infection is associated with decreased responsiveness in the host, increased mortality, and most strikingly, the emergence of an iridescent blue or bluish-purple colour due to the reflection of light off a paracrystalline arrangement of virions within the tissues. Taxonomy In earlier centuries, blue individuals of otherwise drab oniscidean species had been discovered. They were sometimes interpreted to be new subspecies and were described as such: ''Ligidium hypnorum coeruleum'' Lereboullet 1843 and ''L. hypnorum amethystinum'' Schöbl 1861 (in reference to cerulean and amethyst, respectively). In 1980, the first research was published showing that the phenomeno ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Iridoviridae
''Iridoviridae'' is a family of viruses with double-stranded DNA genomes. Amphibians, fish, and invertebrates such as arthropods serve as natural hosts. There are currently 22 species in this family, divided among two subfamilies and seven genera. Nomenclature The name is derived from Iris, the Greek goddess of the rainbow. This name was chosen because of the "rainbow-like" iridescence observed in heavily infected insects and pelleted samples of invertebrate iridoviruses. It may refer to any member of the ''Iridoviridae'' family or a particular genus within ''Iridoviridae''. Taxonomy The following subfamilies and genera are recognized (-''virinae'' denotes subfamily and -''virus'' denotes genus): * '' Alphairdovirinae'' ** ''Lymphocystivirus'' ** ''Megalocytivirus'' ** ''Ranavirus'' * ''Betairidovirinae'' ** ''Chloriridovirus'' ** '' Daphniairidovirus'' ** '' Decapodiridovirus'' ** ''Iridovirus'' Structure The virions are icosahedral with triangulation number (T) = 189–217, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cypovirus
''Cypovirus'', short for cytoplasmic polyhedrosis virus, is a genus of double-stranded RNA viruses in the family ''Reoviridae'' and subfamily ''Spinareovirinae''. Cypoviruses have only been isolated from insects. Diseases associated with this genus include chronic diarrhoea and pale blue iridescence in the guts of larvae. Sixteen species are placed in this genus. Cypoviruses structurally have muc in common with the more widely studied nucleopolyhedroviruses, a genus of arthropod viruses in the family ''Baculoviridae''. However, cypoviruses have an RNA genome and replicate in the cytoplasm of the infected cells, while nucleopolyhedroviruses have a DNA genome and replicate in the nucleus. Structure Viruses in the genus ''Cypovirus'' are nonenveloped, with icosahedral geometries, and T=2 symmetry. Cypoviruses have only a single capsid shell, which is similar to the orthoreovirus inner core. They exhibit striking capsid stability, which is fully capable of endogenous RNA transcrip ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Porcellio Scaber
''Porcellio scaber'' (otherwise known as the common rough woodlouse or simply rough woodlouse), is a species of woodlouse native to Europe but with a cosmopolitan distribution. They are often found in large numbers in most regions, with many species (shrews, centipedes, toads, spiders and even some birds) preying on them. Taxonomy One subspecies, '' Porcellio scaber lusitanus'', is currently recognized. Two other subspecies were historically deemed valid but are no longer recognized. ''P. s. americanus'', described in 1932, was considered endemic the Americas. ''P. s. japonicus'' was described in 1928 and believed to be endemic to Japan. Both subspecies were synonymized with the nominate in 2020. Distribution ''Porcellio scaber'' is found across Central and Western Europe. In the United Kingdom, it is one of the "big five" species of woodlice. It has also colonised North America, South Africa and other regions including the remote sub-Antarctic Marion island, largely th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ectotherm
An ectotherm (from the Greek () "outside" and () "heat") is an organism in which internal physiological sources of heat are of relatively small or of quite negligible importance in controlling body temperature.Davenport, John. Animal Life at Low Temperature. Publisher: Springer 1991. Such organisms (for example frogs) rely on environmental heat sources, which permit them to operate at very economical metabolic rates. Some of these animals live in environments where temperatures are practically constant, as is typical of regions of the abyssal ocean and hence can be regarded as homeothermic ectotherms. In contrast, in places where temperature varies so widely as to limit the physiological activities of other kinds of ectotherms, many species habitually seek out external sources of heat or shelter from heat; for example, many reptiles regulate their body temperature by basking in the sun, or seeking shade when necessary in addition to a whole host of other behavioral thermo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chloriridovirus
''Chloriridovirus'' is a genus of viruses, in the family ''Iridoviridae''. Diptera with aquatic larval stage, mainly mosquitoes, lepidoptera, and orthoptera insects serve as natural hosts. There are five species in this genus. Diseases associated with this genus include: yellow-green iridescence beneath the epidermis (early mosquito larval stages are most susceptible to infection). Death rates are highest in the fourth instar. Viruses within this genus have been found to infect mosquito larvae, in which they produce various iridescent Iridescence (also known as goniochromism) is the phenomenon of certain surfaces that appear to gradually change color as the angle of view or the angle of illumination changes. Examples of iridescence include soap bubbles, feathers, butterfl ... colors. Taxonomy The genus contains the following species: * '' Anopheles minimus iridovirus'' * '' Invertebrate iridescent virus 3'' * '' Invertebrate iridescent virus 9'' * '' Invertebrate iridesce ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Iridovirus
''Iridovirus'' is a genus of viruses in the family ''Iridoviridae''. Insects serve as natural hosts. Currently, only two species are placed in this genus. ''Invertebrate iridescent virus 6'' (IIV-6) was recognised as the type species until such a designation was abolished. IIV-6 is hosted by mosquitos and usually causes covert (inapparent) infection that reduces fitness. The remaining species ''Invertebrate iridescent virus 31'' (IIV-31) is hosted by isopods and causes patent (apparent) infection characterised by blue to bluish-purple iridescence and a shortened lifespan. Taxonomy Group: dsDNA ICTVMaster Species List 2018b.v2 on: ICTVonline: MSL #34 as of February 2019 Former species ''Invertebrate iridescent virus 1'' (IIV-1) has been removed from ''Iridovirus''. Its current status is a tentative member of ''Chloriridovirus ''Chloriridovirus'' is a genus of viruses, in the family ''Iridoviridae''. Diptera with aquatic larval stage, mainly mosquitoes, lepidoptera, and o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arthropod
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] |
Woodlice
A woodlouse (plural woodlice) is an isopod crustacean from the polyphyleticThe current consensus is that Oniscidea is actually triphyletic suborder Oniscidea within the order Isopoda. They get their name from often being found in old wood. The first woodlice were marine isopods which are presumed to have colonised land in the Carboniferous, though the oldest known fossils are from the Cretaceous period. They have many common names and although often referred to as terrestrial isopods, some species live semiterrestrially or have recolonised aquatic environments. Woodlice in the families Armadillidae, Armadillidiidae, Eubelidae, Tylidae and some other genera can roll up into a roughly spherical shape ( conglobate) as a defensive mechanism; others have partial rolling ability, but most cannot conglobate at all. Woodlice have a basic morphology of a segmented, dorso-ventrally flattened body with seven pairs of jointed legs, specialised appendages for respiration and like ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
