|
Chtonobdella Whitmani
''Chtonobdella'' is a genus of land leeches belonging to the family Haemadipsidae, erected by Adolph Grube in 1866.Grube AE (1866) ''Landblutegeln asu Südaustralien. Jahres-Bericht der Schlesischen Gesellschaft für Vaterländische Cultur'' 43: 66. Species are mostly found in Australia and New Guinea, with isolated records from other Pacific islands and Madagascar. Taxonomy and description The name ''Chtonobdella'' is derived from two Greek elements: ''chton'', meaning 'ground' or 'land', and ''bdella'', meaning 'leech': thus similar to other genera in the family Haemadipsidae, the jawed land leeches. In his original description of the type species, Adolph Grube used the name ''Hirudo limbata'', but suggested the new genus name ''Chtonobdella''. Confusingly, Grube later referred to the species again as ''H. limbata'' and other scholars retained the name; both this species and '' C. fallax'', from Madagascar, have also been placed in the related genus '' Haemadipsa''. As wi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chtonobdella Limbata
''Chtonobdella limbata'' is a species of terrestrial blood-sucking leech, commonly found in subtropical forests of Australia. Contracted, the leeches are about long, but once extended they can reach or even in length. They have two saw-like jaws which they use to cut open their victims' skin. In colour, they are mostly dark, with some coloured stripes. Their rear suckers are oval-shaped and have a prehensile protuberance on their tips. The first stage of their feeding has been studied in detail, and shows some differences with other leeches. ''C. limbata'' is found along the east coast of Australia, especially in the state of New South Wales. It has adapted to withstand drought-like conditions by anhydrobiosis; they burrow into the ground and enter an inanimate state that resists dehydration. In this state they can survive for several months. They are exclusively ground-dwellers, and never enter water or climb onto forest vegetation. Classification ''Chtonobdella limbata'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Global Biodiversity Information Facility
The Global Biodiversity Information Facility (GBIF) is an international organisation that focuses on making scientific data on biodiversity available via the Internet using web services. The data are provided by many institutions from around the world; GBIF's information architecture makes these data accessible and searchable through a single portal. Data available through the GBIF portal are primarily distribution data on plants, animals, fungi, and microbes for the world, and scientific names data. The mission of the GBIF is to facilitate free and open access to biodiversity data worldwide to underpin sustainable development. Priorities, with an emphasis on promoting participation and working through partners, include mobilising biodiversity data, developing protocols and standards to ensure scientific integrity and interoperability, building an informatics architecture to allow the interlinking of diverse data types from disparate sources, promoting capacity building and cat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Annelid Genera
The annelids (), also known as the segmented worms, are animals that comprise the phylum Annelida (; ). The phylum contains over 22,000 extant species, including ragworms, earthworms, and leeches. The species exist in and have adapted to various ecologies – some in marine environments as distinct as tidal zones and hydrothermal vents, others in fresh water, and yet others in moist terrestrial environments. The annelids are bilaterally symmetrical, triploblastic, coelomate, invertebrate organisms. They also have parapodia for locomotion. Most textbooks still use the traditional division into polychaetes (almost all marine), oligochaetes (which include earthworms) and leech-like species. Cladistic research since 1997 has radically changed this scheme, viewing leeches as a sub-group of oligochaetes and oligochaetes as a sub-group of polychaetes. In addition, the Pogonophora, Echiura and Sipuncula, previously regarded as separate phyla, are now regarded as sub-groups of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pacific Islands
The Pacific islands are a group of islands in the Pacific Ocean. They are further categorized into three major island groups: Melanesia, Micronesia, and Polynesia. Depending on the context, the term ''Pacific Islands'' may refer to one of several concepts: (1) those countries and islands with common Austronesian origins, (2) the islands once (or currently) colonized, (3) the geographical region of Oceania, or (4) any island located in the Pacific Ocean. This list of islands in the Pacific Ocean is organized by archipelago or political boundary. In order to keep this list of moderate size, the more complete lists for countries with large numbers of small or uninhabited islands have been hyperlinked. Name ambiguity and groupings The umbrella term ''Pacific Islands'' has taken on several meanings. Sometimes it is used to refer only to the islands defined as lying within Toa Samoa. At other times, it is used to refer to the islands of the Pacific Ocean that were previously coloni ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chtonobdella Whitmani
''Chtonobdella'' is a genus of land leeches belonging to the family Haemadipsidae, erected by Adolph Grube in 1866.Grube AE (1866) ''Landblutegeln asu Südaustralien. Jahres-Bericht der Schlesischen Gesellschaft für Vaterländische Cultur'' 43: 66. Species are mostly found in Australia and New Guinea, with isolated records from other Pacific islands and Madagascar. Taxonomy and description The name ''Chtonobdella'' is derived from two Greek elements: ''chton'', meaning 'ground' or 'land', and ''bdella'', meaning 'leech': thus similar to other genera in the family Haemadipsidae, the jawed land leeches. In his original description of the type species, Adolph Grube used the name ''Hirudo limbata'', but suggested the new genus name ''Chtonobdella''. Confusingly, Grube later referred to the species again as ''H. limbata'' and other scholars retained the name; both this species and '' C. fallax'', from Madagascar, have also been placed in the related genus '' Haemadipsa''. As wi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chtonobdella Australiensis
''Chtonobdella'' is a genus of land leeches belonging to the family Haemadipsidae, erected by Adolph Grube in 1866.Grube AE (1866) ''Landblutegeln asu Südaustralien. Jahres-Bericht der Schlesischen Gesellschaft für Vaterländische Cultur'' 43: 66. Species are mostly found in Australia and New Guinea, with isolated records from other Pacific islands and Madagascar. Taxonomy and description The name ''Chtonobdella'' is derived from two Greek elements: ''chton'', meaning 'ground' or 'land', and ''bdella'', meaning 'leech': thus similar to other genera in the family Haemadipsidae, the jawed land leeches. In his original description of the type species, Adolph Grube used the name ''Hirudo limbata'', but suggested the new genus name ''Chtonobdella''. Confusingly, Grube later referred to the species again as ''H. limbata'' and other scholars retained the name; both this species and '' C. fallax'', from Madagascar, have also been placed in the related genus '' Haemadipsa''. As ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tomography
Tomography is imaging by sections or sectioning that uses any kind of penetrating wave. The method is used in radiology, archaeology, biology, atmospheric science, geophysics, oceanography, plasma physics, materials science, cosmochemistry, astrophysics, quantum information Quantum information is the information of the state of a quantum system. It is the basic entity of study in quantum information theory, and can be manipulated using quantum information processing techniques. Quantum information refers to both t ..., and other areas of science. The word ''tomography'' is derived from Ancient Greek τόμος ''tomos'', "slice, section" and γράφω ''graphō'', "to write" or, in this context as well, "to describe." A device used in tomography is called a tomograph, while the image produced is a tomogram. In many cases, the production of these images is based on the mathematical procedure tomographic reconstruction, such as X-ray computed tomography technically being pro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leech
Leeches are segmented parasitism, parasitic or Predation, predatory worms that comprise the Class (biology), subclass Hirudinea within the phylum Annelida. They are closely related to the Oligochaeta, oligochaetes, which include the earthworm, and like them have soft, muscular segmented bodies that can lengthen and contract. Both groups are hermaphrodites and have a clitellum, but leeches typically differ from the oligochaetes in having suckers at both ends and ring markings that do not correspond with their internal segmentation. The body is muscular and relatively solid; the coelom, the spacious body cavity found in other annelids, is reduced to small channels. The majority of leeches live in freshwater habitats, while some species can be found in terrestrial or marine environments. The best-known species, such as the medicinal leech, ''Hirudo medicinalis'', are hematophagous, attaching themselves to a host with a sucker and feeding on blood, having first secreted the pepti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Monotypic
In biology, a monotypic taxon is a taxonomic group (taxon) that contains only one immediately subordinate taxon. A monotypic species is one that does not include subspecies or smaller, infraspecific taxa. In the case of genera, the term "unispecific" or "monospecific" is sometimes preferred. In botanical nomenclature, a monotypic genus is a genus in the special case where a genus and a single species are simultaneously described. Theoretical implications Monotypic taxa present several important theoretical challenges in biological classification. One key issue is known as "Gregg's Paradox": if a single species is the only member of multiple hierarchical levels (for example, being the only species in its genus, which is the only genus in its family), then each level needs a distinct definition to maintain logical structure. Otherwise, the different taxonomic ranks become effectively identical, which creates problems for organizing biological diversity in a hierarchical syste ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
