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Desmonema (jellyfish)
''Desmonema'' is a genus of jellyfish under the Cyaneidae family found in colder waters near the Antarctic region and off of the coast of Argentina. They have a bell diameter that can extend over 1 meter and wide tentacles that are grouped together in clusters. They share similar anatomical and physiological structures to the genus '' Cyanea''. Their sophisticated structures like the thick tentacles, sensory systems, and gastrovascular system allow ''Desmonema'' to easily capture and extracellularly digest their prey. In recent years, ''Desmonema'' were reported to have a commensal relationship with fishes under the ''Trachurus'' genus and a parasitic relationship with specimens of the '' Hyperia'' genus. Anatomy The anatomical structure of ''Desmonema'' closely resembles that of the genus '' Cyanea''. ''Desmonema'' tend to have a wider bell diameter between 20 and 100 centimeters compared to other Scyphozoans. They have a strong, well-developed radial and circular arrangement ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Desmonema Gaudichaudi
''Desmonema'' may refer to: * ''Desmonema'' (jellyfish), a genus of jellyfishes in the family Cyaneidae * ''Desmonema'', a genus of plants generally considered synonymous with '' Euphorbia'' {{Genus disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Desmonema Chierchiana
''Desmonema'' may refer to: * ''Desmonema'' (jellyfish), a genus of jellyfishes in the family Cyaneidae * ''Desmonema'', a genus of plants generally considered synonymous with '' Euphorbia'' {{Genus disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cnidarians Of The Atlantic Ocean
Cnidaria () is a phylum under kingdom Animalia containing over 11,000 species of aquatic animals found both in freshwater and marine environments, predominantly the latter. Their distinguishing feature is cnidocytes, specialized cells that they use mainly for capturing prey. Their bodies consist of mesoglea, a non-living jelly-like substance, sandwiched between two layers of epithelium that are mostly one cell thick. Cnidarians mostly have two basic body forms: swimming medusae and sessile polyps, both of which are radially symmetrical with mouths surrounded by tentacles that bear cnidocytes. Both forms have a single orifice and body cavity that are used for digestion and respiration. Many cnidarian species produce colonies that are single organisms composed of medusa-like or polyp-like zooids, or both (hence they are trimorphic). Cnidarians' activities are coordinated by a decentralized nerve net and simple receptors. Several free-swimming species of Cubozoa and Scyph ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cyanea Rosea
Cyanea may refer to: * ''Cyanea'' (jellyfish), a genus of jellyfish in the family Cyaneidae * ''Cyanea'' (plant), a genus of Hawaiian plants in the family Campanulaceae * An ancient Greek name that means "blue sky" and in the Greek alphabet it's written "Κυάνεια" * ''Cyanea'', a species name In taxonomy, binomial nomenclature ("two-term naming system"), also called nomenclature ("two-name naming system") or binary nomenclature, is a formal system of naming species of living things by giving each a name composed of two parts, bot ... See also * ''Including use as a species name'' * {{Disambiguation, genus ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Desmonema Scoresbyanna
''Desmonema'' may refer to: * ''Desmonema'' (jellyfish), a genus of jellyfishes in the family Cyaneidae * ''Desmonema'', a genus of plants generally considered synonymous with '' Euphorbia'' {{Genus disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Desmonema Glaciale
''Desmonema'' may refer to: * ''Desmonema'' (jellyfish), a genus of jellyfishes in the family Cyaneidae * ''Desmonema'', a genus of plants generally considered synonymous with '' Euphorbia'' {{Genus disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Desmonema Chierchianum
''Desmonema'' may refer to: * ''Desmonema'' (jellyfish), a genus of jellyfishes in the family Cyaneidae * ''Desmonema'', a genus of plants generally considered synonymous with '' Euphorbia'' {{Genus disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Desmonema Glacialis
''Desmonema'' may refer to: * ''Desmonema'' (jellyfish), a genus of jellyfishes in the family Cyaneidae * ''Desmonema'', a genus of plants generally considered synonymous with '' Euphorbia'' {{Genus disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hyperia Macrocephala
''Hyperia macrocephala'' is a species of zooplankton, an amphipod in the family Hyperiidae The Hyperiidae are a family of amphipods, containing these genera: *'' Euthemisto'' Bovallius, 1887 *'' Hyperia'' Latreille ''in'' Desmarest, 1823 *'' Hyperiella'' Bovallius, 1887 *'' Hyperoche'' Bovallius, 1887 *'' Laxohyperia'' M. Vinogradov & .... Etymology The name ''Hyperia macrocephala'' comes from the Latin "large head". Description This species can grow to 29 mm. The head of ''Hyperia macrocephala'' is shorter than the combined length of the first two pereonites. Specimens that are large and mature have CX IV that are pointed and laterally projecting. The P III-IV have many short, non-uniform setae on ART 5 and 6. The P V-VII are naked, and have a short cluster of setae apparently on only on the anterodistal margins of ART 2 of P V and VII. There are sharply pointed posterodistal corners on the epimeral plates. There is a strongly convex shape to the posterior margin of th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Obligate Parasite
An obligate parasite or holoparasite is a parasitic organism that cannot complete its life-cycle without exploiting a suitable host. If an obligate parasite cannot obtain a host it will fail to reproduce. This is opposed to a facultative parasite, which can act as a parasite but does not rely on its host to continue its life-cycle. Obligate parasites have evolved a variety of parasitic strategies to exploit their hosts. Holoparasites and some hemiparasites are obligate. It is advantageous for the parasite to preserve the health of their host when this is compatible with their nutritional and reproductive requirements, except when the death of the host is necessary for transmission.Combes, C. (1997) Fitness of Parasites: Pathology and Selection ''International Journal for Parasitology'' 27 (1): 1–10. Species Obligate parasitism is exhibited in a range of organisms, with examples in viruses, bacteria, fungi, plants, and animals.Balashov, Yu.S. (2011) Parasitism and Ecological Paras ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amphipoda
Amphipoda is an order of malacostracan crustaceans with no carapace and generally with laterally compressed bodies. Amphipods range in size from and are mostly detritivores or scavengers. There are more than 9,900 amphipod species so far described. They are mostly marine animals, but are found in almost all aquatic environments. Some 1,900 species live in fresh water, and the order also includes the terrestrial sandhoppers such as ''Talitrus saltator''. Etymology and names The name ''Amphipoda'' comes, via New Latin ', from the Greek roots 'on both/all sides' and 'foot'. This contrasts with the related Isopoda, which have a single kind of thoracic leg. Particularly among anglers, amphipods are known as ''freshwater shrimp'', ''scuds'', or ''sideswimmers''. Description Anatomy The body of an amphipod is divided into 13 segments, which can be grouped into a head, a thorax and an abdomen. The head is fused to the thorax, and bears two pairs of antennae and one pair of s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hyperia
Hyperia may stand for: * ''Hyperia'' (crustacean), a genus of the order Amphipoda * The ancient Greek name for the island of Amorgos * In Greek mythology A major branch of classical mythology, Greek mythology is the body of myths originally told by the Ancient Greece, ancient Greeks, and a genre of Ancient Greek folklore. These stories concern the Cosmogony, origin and Cosmology#Metaphysical co ..., Hyperia was the daughter of the river god Inachus {{disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
