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This Canus
''This'' is a genus of kelp fly in the family Coelopidae. , it is monotypic, consisting of its type species ''This canus''. ''This'' and ''T. canus'' were respectively circumscribed and described in 1991 by the Australian entomologist David K. McAlpine. It is endemic to southern Australia. Taxonomic history David K. McAlpine of the Australian Museum circumscribed and named the genus ''This'' in a 1991 overview of Australian Coelopidae, which was published in the journal ''Systematic Entomology''. In the same paper McAlpine named and described its type species ''T. canus'', the only species included in the genus. McAlpine and Geoff Holloway collected the male ''T. canus'' holotype in 1971; it was deposited in the collections of the Australian Museum. Approximately 450 specimens of ''T. canus'' were designated as paratypes; collections holding paratypes include: the Australian Museum, the South Australian Museum, the Natural History Museum, London, the Muséum national d'Histoire ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kelp Fly
Kelp fly is one common name of species of flies in a number of Taxonomic rank#Ranks in zoology, families of "true Fly, flies" or Fly, Diptera. They generally feed on stranded and rotting seaweed, particularly kelp in the wrack zone. When conditions are suitable they are very numerous and may be ecologically important in the turnover of organic material on the coast.Griffiths C. L., Stenton-Dozey J. M. E., Koop K.,1983, Kelp wrack and energy flow through a sandy beach. Sandy beaches as ecosystems, A. McLachlan & T. Erasmus (eds.), W. Junk, The Hague,547–556 In this role they also may be an important item in the diet of beach-dwelling animals and birds. The flies most generally referred to as kelp flies are the widely distributed Coelopidae, such as ''Coelopa pilipes''. In popular speech however, they are not clearly distinguished from other flies with similar feeding habits, such as the Heterocheilidae, the Helcomyzidae, Helcomyzinae and sundry members of the Anthomyiidae.McAlpine, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhis (fly)
''Rhis'' is a genus of kelp fly in the family Coelopidae. Species *''Rhis popeae'' (McAlpine, 1991) *''Rhis whitleyi Sherwood Smith (born May 29, 1951) is an American fantasy and science fiction writer for young adult literature, young adults and adults. Smith is a Nebula Award finalist and a longtime writing group organizer and participant. Smith's works in ...'' McAlpine, 1991 References Coelopidae Sciomyzoidea genera {{Sciomyzoidea-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Homeric Greek
Homeric Greek is the form of the Greek language that was used in the ''Iliad'', ''Odyssey'', and ''Homeric Hymns''. It is a literary dialect of Ancient Greek consisting mainly of an archaic form of Ionic, with some Aeolic forms, a few from Arcadocypriot, and a written form influenced by Attic. It was later named Epic Greek because it was used as the language of epic poetry, typically in dactylic hexameter, by poets such as Hesiod and Theognis of Megara. Some compositions in Epic Greek date from as late as the 5th century D and it only fell out of use by the end of classical antiquity. Main features In the following description, only forms that differ from those of later Greek are discussed. Omitted forms can usually be predicted from patterns seen in Ionic Greek. Phonology Homeric Greek is like Ionic Greek, and unlike Classical Attic, in shifting almost all cases of long to . Exceptions include nouns like ("a goddess"), and the genitive plural of first-declension n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Generic Name (biology)
Genus (; : genera ) is a taxonomic rank above species and below family as used in the biological classification of living and fossil organisms as well as viruses. In binomial nomenclature, the genus name forms the first part of the binomial species name for each species within the genus. :E.g. '' Panthera leo'' (lion) and '' Panthera onca'' (jaguar) are two species within the genus ''Panthera''. ''Panthera'' is a genus within the family Felidae. The composition of a genus is determined by taxonomists. The standards for genus classification are not strictly codified, so different authorities often produce different classifications for genera. There are some general practices used, however, including the idea that a newly defined genus should fulfill these three criteria to be descriptively useful: # monophyly – all descendants of an ancestral taxon are grouped together (i.e. phylogenetic analysis should clearly demonstrate both monophyly and validity as a separate lineage). ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tree Of Life Web Project
The Tree of Life Web Project (ToL) is an Internet project providing information about the diversity and phylogeny of life on Earth. This collaborative peer reviewed project began in 1995, and is written by biologists from around the world. The site has not been updated since 2011, however the pages are still accessible. The pages are linked hierarchically, in the form of the branching evolutionary tree of life, organized cladistically. Each page contains information about one particular group of organisms and is organized according to a branched tree-like form, thus showing hypothetical relationships between different groups of organisms. In 2009 the project ran into funding problems from the University of Arizona. Pages and Treehouses submitted took a considerably longer time to be approved as they were being reviewed by a small group of volunteers, and apparently, around 2011, all activities ended. History The idea of this project started in the late 1980s. David Maddison ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clade
In biology, a clade (), also known as a Monophyly, monophyletic group or natural group, is a group of organisms that is composed of a common ancestor and all of its descendants. Clades are the fundamental unit of cladistics, a modern approach to taxonomy adopted by most biological fields. The common ancestor may be an individual, a population, or a species (extinct or Extant taxon, extant). Clades are nested, one in another, as each branch in turn splits into smaller branches. These splits reflect evolutionary history as populations diverged and evolved independently. Clades are termed ''monophyletic'' (Greek: "one clan") groups. Over the last few decades, the cladistic approach has revolutionized biological classification and revealed surprising evolutionary relationships among organisms. Increasingly, taxonomists try to avoid naming Taxon, taxa that are not clades; that is, taxa that are not Monophyly, monophyletic. Some of the relationships between organisms that the molecul ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Monophyletic
In biological cladistics for the classification of organisms, monophyly is the condition of a taxonomic grouping being a clade – that is, a grouping of organisms which meets these criteria: # the grouping contains its own most recent common ancestor (or more precisely an ancestral population), i.e. excludes non-descendants of that common ancestor # the grouping contains all the descendants of that common ancestor, without exception Monophyly is contrasted with paraphyly and polyphyly as shown in the second diagram. A ''paraphyletic'' grouping meets 1. but not 2., thus consisting of the descendants of a common ancestor, excepting one or more monophyletic subgroups. A '' polyphyletic'' grouping meets neither criterion, and instead serves to characterize convergent relationships of biological features rather than genetic relationships – for example, night-active primates, fruit trees, or aquatic insects. As such, these characteristic features of a polyphyletic grouping ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Morphology (biology)
Morphology (from Ancient Greek μορφή (morphḗ) "form", and λόγος (lógos) "word, study, research") is the study of the form and structure of organisms and their specific structural features. This includes aspects of the outward appearance (shape, structure, color, pattern, size), as well as the form and structure of internal parts like bones and organs, i.e., anatomy. This is in contrast to physiology, which deals primarily with function. Morphology is a branch of life science dealing with the study of the overall structure of an organism or taxon and its component parts. History The etymology of the word "morphology" is from the Ancient Greek (), meaning "form", and (), meaning "word, study, research". While the concept of form in biology, opposed to function, dates back to Aristotle (see Aristotle's biology), the field of morphology was developed by Johann Wolfgang von Goethe (1790) and independently by the German anatomist and physiologist Karl Fried ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
16S RDNA
16S ribosomal RNA (or 16 S rRNA) is the RNA component of the 30S subunit of a prokaryotic ribosome (SSU rRNA). It binds to the Shine-Dalgarno sequence and provides most of the SSU structure. The genes coding for it are referred to as 16S rRNA genes and are used in reconstructing phylogenies, due to the slow rates of evolution of this region of the gene. Carl Woese and George E. Fox were two of the people who pioneered the use of 16S rRNA in phylogenetics in 1977. Multiple sequences of the 16S rRNA gene can exist within a single bacterium. Terminology The descriptor ''16S'' refers to the size of these ribosomal subunits as reflected indirectly by the speed at which they sediment when samples are centrifuged. Thus ''16S'' means 16 Svedburg units. Functions * Like the large (23S) ribosomal RNA, it has a structural role, acting as a scaffold defining the positions of the ribosomal proteins. * The 3-end contains the anti- Shine-Dalgarno sequence, which binds upstream to the AU ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eukaryotic Translation Elongation Factor 1 Alpha 1
Elongation factor 1-alpha 1 (eEF1a1) is a translation elongation protein, expressed across eukaryotes. In humans, it is encoded by the ''EEF1A1'' gene. This gene encodes an isoform of the alpha subunit of the elongation factor-1 complex, which is responsible for the enzymatic delivery of aminoacyl tRNAs to the ribosome. This isoform (alpha 1) is expressed in brain, placenta, lung, liver, kidney, and pancreas, and the other isoform (alpha 2) is expressed in brain, heart and skeletal muscle. This isoform is identified as an autoantigen in 66% of patients with Felty's syndrome. This gene has been found to have multiple copies on many chromosomes, some of which, if not all, represent different pseudogenes. Structure Mammalian eEF1A possesses two paralogs, eEF1A1 and eEF1A2, with high amino acid sequence homology (approximately 90% identity). The sequences of their promoter regions are also highly similar, though that of the ''eEF1A2'' gene contains an additional 81 bp SV40 small ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Beaopterus
''Beaopterus'' is a genus of kelp fly in the family Coelopidae The Coelopidae or kelp flies are a family of Acalyptratae flies (order Diptera), they are sometimes also called seaweed flies, although both terms are used for a number of seashore Diptera. Fewer than 40 species occur worldwide. The family is fo .... Species *'' Beaopterus philpotti'' ( Malloch, 1933) *'' Beaopterus robustus'' Lamb, 1909 References Coelopidae Sciomyzoidea genera {{Sciomyzoidea-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Icaridion
''Icaridion'' is a genus of kelp fly in the family Coelopidae. Species *'' Icaridion debile'' (Lamb, 1909) *''Icaridion nasutum ''Icaridion'' is a genus of kelp fly in the family Coelopidae. Species *''Icaridion debile'' (Lamb, 1909) *''Icaridion nasutum'' Lamb, 1909 *''Icaridion nigrifrons'' (Lamb, 1909) References Coelopidae Sciomyzoidea genera {{Sciomyzoide ...'' Lamb, 1909 *'' Icaridion nigrifrons'' (Lamb, 1909) References Coelopidae Sciomyzoidea genera {{Sciomyzoidea-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
