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Muggiaea Bargmannae
''Muggiaea'' is a genus of siphonophores in the family Diphyidae. Members of this family are colonial siphonophores with two nectophores (swimming bells) arranged one behind the other, but in the genus ''Muggiaea'', the posterior nectophore is absent. The anterior one has a complete dorsal ridge. The somatocyst (extension of the gastrovascular system) is very close to the nectosac (central cavity with muscular walls) wall. Species The World Register of Marine Species includes the following species in the genus: * ''Muggiaea atlantica'' Cunningham, 1892 * '' Muggiaea bargmannae'' Totton, 1954 * '' Muggiaea delsmani'' Totton, 1954 * ''Muggiaea kochii ''Muggiaea kochii'' is a species of small hydrozoan, a siphonophore in the family Diphyidae. Description ''Muggiaea kochii'' is very similar in appearance to the closely related '' Muggiaea atlantica''. It consists of a single nectophore (swim ...'' (Will, 1844) References Diphyidae Hydrozoan genera {{Siphonophorae- ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Muggiaea Atlantica
''Muggiaea atlantica'' is a species of small hydrozoan, a siphonophore in the family Diphyidae. It is a cosmopolitan species occurring in inshore waters of many of the world's oceans, and it has colonised new areas such as the North Sea and the Adriatic Sea. It is subject to large population swings, and has been held responsible for the death of farmed salmon in Norway. The species was first described by J.T. Cunningham in 1892 from a specimen obtained at Plymouth, England. Description ''Muggiaea atlantica'' is a small colonial siphonophore, but one of the two nectophores (swimming bells) is undeveloped. The remaining nectophore grows to a length of about . It is translucent and has five straight, longitudinal ridges, some of which may form a keel. The hydroecium (ventral cavity) is about one third of the length of the nectophore, and the long slender somatocyst (extension of the gastrovascular system) reaches the apex of the nectosac (central cavity) and sometimes contains oi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genus
Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus comes above species and below family (taxonomy), family. 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 taxonomy (biology), 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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Siphonophorae
Siphonophorae (from Greek ''siphōn'' 'tube' + ''pherein'' 'to bear') is an order within Hydrozoa, which is a class of marine organisms within the phylum Cnidaria. According to the World Register of Marine Species, the order contains 175 species thus far. Although a siphonophore may appear to be an individual organism, each specimen is in fact a colonial organism composed of medusoid and polypoid zooids that are morphologically and functionally specialized. Zooids are multicellular units that develop from a single fertilized egg and combine to create functional colonies able to reproduce, digest, float, maintain body positioning, and use jet propulsion to move. Most colonies are long, thin, transparent floaters living in the pelagic zone. Like other hydrozoans, some siphonophores emit light to attract and attack prey. While many sea animals produce blue and green bioluminescence, a siphonophore in the genus ''Erenna'' was only the second life form found to produce a red li ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Family (biology)
Family ( la, familia, plural ') is one of the eight major hierarchical taxonomic ranks in Linnaean taxonomy. It is classified between order and genus. A family may be divided into subfamilies, which are intermediate ranks between the ranks of family and genus. The official family names are Latin in origin; however, popular names are often used: for example, walnut trees and hickory trees belong to the family Juglandaceae, but that family is commonly referred to as the "walnut family". What belongs to a family—or if a described family should be recognized at all—are proposed and determined by practicing taxonomists. There are no hard rules for describing or recognizing a family, but in plants, they can be characterized on the basis of both vegetative and reproductive features of plant species. Taxonomists often take different positions about descriptions, and there may be no broad consensus across the scientific community for some time. The publishing of new data and opini ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diphyidae
The Diphyidae are a family of siphonophores. These are colonial siphonophores with two nectophores (swimming bells) arranged one behind the other. The front one includes a somatocyst (extension of the gastrovascular system), while the hind one does not. The somatocyst often contains an oil droplet for buoyancy control. A nectosac (central cavity with muscular walls) in each nectophore allows the organism to swim efficiently. Systematics The World Register of Marine Species The World Register of Marine Species (WoRMS) is a taxonomic database that aims to provide an authoritative and comprehensive list of names of marine organisms. Content The content of the registry is edited and maintained by scientific specialis ... includes the following taxa in the family Diphyidae: *Subfamily Diphyinae Quoy & Gaimard, 1827 ** Genus '' Chelophyes'' Totton, 1932 *** '' Chelophyes appendiculata'' (Eschscholtz, 1829) *** '' Chelophyes contorta'' (Lens & van Riemsdijk, 1908) ** Genus '' Di ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Colony (biology)
In biology, a colony is composed of two or more conspecific individuals living in close association with, or connected to, one another. This association is usually for mutual benefit such as stronger defense or the ability to attack bigger prey. Colonies can form in various shapes and ways depending on the organism involved. For instance, the bacterial colony is a cluster of identical cells (clones). These colonies often form and grow on the surface of (or within) a solid medium, usually derived from a single parent cell. Colonies, in the context of development, may be composed of two or more unitary (or solitary) organisms or be modular organisms. Unitary organisms have determinate development (set life stages) from zygote to adult form and individuals or groups of individuals (colonies) are visually distinct. Modular organisms have indeterminate growth forms (life stages not set) through repeated iteration of genetically identical modules (or individuals), and it can be diffic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nectophore
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World Register Of Marine Species
The World Register of Marine Species (WoRMS) is a taxonomic database that aims to provide an authoritative and comprehensive list of names of marine organisms. Content The content of the registry is edited and maintained by scientific specialists on each group of organism. These taxonomists control the quality of the information, which is gathered from the primary scientific literature as well as from some external regional and taxon-specific databases. WoRMS maintains valid names of all marine organisms, but also provides information on synonyms and invalid names. It is an ongoing task to maintain the registry, since new species are constantly being discovered and described by scientists; in addition, the nomenclature and taxonomy of existing species is often corrected or changed as new research is constantly being published. Subsets of WoRMS content are made available, and can have separate badging and their own home/launch pages, as "subregisters", such as the ''World List of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Species
In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. Other ways of defining species include their karyotype, DNA sequence, morphology, behaviour or ecological niche. In addition, paleontologists use the concept of the chronospecies since fossil reproduction cannot be examined. The most recent rigorous estimate for the total number of species of eukaryotes is between 8 and 8.7 million. However, only about 14% of these had been described by 2011. All species (except viruses) are given a two-part name, a "binomial". The first part of a binomial is the genus to which the species belongs. The second part is called the specific name or the specific epithet (in botanical nomenclature, also sometimes i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Muggiaea Bargmannae
''Muggiaea'' is a genus of siphonophores in the family Diphyidae. Members of this family are colonial siphonophores with two nectophores (swimming bells) arranged one behind the other, but in the genus ''Muggiaea'', the posterior nectophore is absent. The anterior one has a complete dorsal ridge. The somatocyst (extension of the gastrovascular system) is very close to the nectosac (central cavity with muscular walls) wall. Species The World Register of Marine Species includes the following species in the genus: * ''Muggiaea atlantica'' Cunningham, 1892 * '' Muggiaea bargmannae'' Totton, 1954 * '' Muggiaea delsmani'' Totton, 1954 * ''Muggiaea kochii ''Muggiaea kochii'' is a species of small hydrozoan, a siphonophore in the family Diphyidae. Description ''Muggiaea kochii'' is very similar in appearance to the closely related '' Muggiaea atlantica''. It consists of a single nectophore (swim ...'' (Will, 1844) References Diphyidae Hydrozoan genera {{Siphonophorae- ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Muggiaea Delsmani
''Muggiaea'' is a genus of siphonophores in the family Diphyidae. Members of this family are colonial siphonophores with two nectophores (swimming bells) arranged one behind the other, but in the genus ''Muggiaea'', the posterior nectophore is absent. The anterior one has a complete dorsal ridge. The somatocyst (extension of the gastrovascular system) is very close to the nectosac (central cavity with muscular walls) wall. Species The World Register of Marine Species includes the following species in the genus: * ''Muggiaea atlantica'' Cunningham, 1892 * ''Muggiaea bargmannae'' Totton, 1954 * '' Muggiaea delsmani'' Totton, 1954 * ''Muggiaea kochii ''Muggiaea kochii'' is a species of small hydrozoan, a siphonophore in the family Diphyidae. Description ''Muggiaea kochii'' is very similar in appearance to the closely related '' Muggiaea atlantica''. It consists of a single nectophore (swim ...'' (Will, 1844) References Diphyidae Hydrozoan genera {{Siphonophorae-s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Muggiaea Kochii
''Muggiaea kochii'' is a species of small hydrozoan, a siphonophore in the family Diphyidae. Description ''Muggiaea kochii'' is very similar in appearance to the closely related '' Muggiaea atlantica''. It consists of a single nectophore (swimming bell), the exterior of which has five complete longitudinal ridges, the bases of which bend dorsally. The hydroecium (ventral cavity) is shallow and the somatocyst (part of the gastrovascular system) extends to about half the height of the nectophore. The eudoxid stage (reproductive element) is indistinguishable from that of ''M. atlantica''. Distribution and habitat ''Muggiaea kochii'' is found in the neritic zone on both sides of the warm temperate and subtropical Atlantic Ocean. It is present on the Gulf Coast of the United States where it often occurs in brackish water in bays. In the Mediterranean Sea it is often most abundant in the period April to June, but this varies from year to year. It also occurs in the Adriatic Sea wher ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
