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Aequorea Macrodactyla
''Aequorea macrodactyla'' is a species of hydrozoan in the family Aequoreidae. It was first described by Johann Friedrich von Brandt Johann Friedrich von Brandt (25 May 1802 – 15 July 1879) was a German-Russian natural history, naturalist, who worked mostly in Russia. Brandt was born in Jüterbog and educated at a Gymnasium (school), gymnasium in Wittenberg and the Humboldt ... in 1835. Description It can have up to 150 tentacles and grow up to 25 cm. References Aequoreidae Animals described in 1835 {{Leptothecata-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Johann Friedrich Von Brandt
Johann Friedrich von Brandt (25 May 1802 – 15 July 1879) was a German-Russian natural history, naturalist, who worked mostly in Russia. Brandt was born in Jüterbog and educated at a Gymnasium (school), gymnasium in Wittenberg and the Humboldt University of Berlin, University of Berlin. In 1831 he emigrated to Russia, and soon was appointed director of the Zoological Museum of the St Petersburg Academy of Sciences. Brandt encouraged the collection of native animals, many of which were not represented in the museum. Many specimens began to arrive from the expeditions of Nikolai Alekseevich Severtzov, Severtzov, Nikolai Przhevalsky, Przhevalsky, Aleksandr Fyodorovich Middendorf, Middendorff, Leopold von Schrenck, Schrenck and Gustav Radde. He described several birds collected by Russian explorers off the Pacific Coast of North America, including Brandt's cormorant, red-legged kittiwake and spectacled eider. As a paleontologist, Brandt ranks among the best. He was also an entomo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydrozoan
Hydrozoa (hydrozoans; ) are a taxonomic class of individually very small, predatory animals, some solitary and some colonial, most of which inhabit saline water. The colonies of the colonial species can be large, and in some cases the specialized individual animals cannot survive outside the colony. A few genera within this class live in freshwater habitats. Hydrozoans are related to jellyfish and corals and belong to the phylum Cnidaria. Some examples of hydrozoans are the freshwater jelly (''Craspedacusta sowerbyi''), freshwater polyps ('' Hydra''), ''Obelia'', Portuguese man o' war (''Physalia physalis''), chondrophores (Porpitidae), "air fern" (''Sertularia argentea''), and pink-hearted hydroids (''Tubularia''). Anatomy Most hydrozoan species include both a polypoid and a medusoid stage in their lifecycles, although a number of them have only one or the other. For example, ''Hydra'' has no medusoid stage, while '' Liriope'' lacks the polypoid stage. Polyps The hydroid fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aequoreidae
Aequoreidae is a family of hydrozoans, sometimes called the many-ribbed jellies or many-ribbed jellyfish. There are approximately 30 known species found in temperate and tropical marine coastal environments. Aequoreids include ''Aequorea victoria'', the organism from which the green fluorescent protein gene was isolated. Polyps Only the polyp stages of '' Aequorea'' species have been observed. The colonies are covered with chitinous periderm and can be either prostrate or erect with weak or sympodial branching. Young possess with a closing structure called '' operculum'', which consists of several relatively long triangular folds that meet together in the centre when a disturbed polyp contracts. Because the operculum is quite fragile, hydrothecae of old polyps usually have only a small chitinous collar remaining. Comparatively large cylindrical are attached to the colony with a thin peduncle. Commonly only one medusa develops in each gonotheca. Medusae Mature aequoreid medus ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mutual Publishing
Mutual may refer to: *Mutual organization, where as customers derive a right to profits and votes *Mutual information, the intersection of multiple information sets *Mutual insurance, where policyholders have certain "ownership" rights in the organization *Mutual fund, a professionally managed form of collective investments *Mutual Film, early American motion picture conglomerate, the producers of some of Charlie Chaplin's greatest comedies *Mutual Base Ball Club (1857-1871), defunct early baseball team usually referred to as "Mutual" in the standings. *Mutual Broadcasting System, a defunct U.S. radio network * Mutual Improvement Association, the name of two youth programs run by the Church of Jesus Christ of Latter-day Saints *Mutual authentication, used in cryptography *"Mutual", a 2018 song by Shawn Mendes from ''Shawn Mendes'' ;Place names *Mutual, Maryland, a community in the United States *Mutual, Ohio, a village in the United States *Mutual, Oklahoma, a town in the United St ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
