Die Würfelquallen (Cubozoa) bilden eine kleine, fast ausschließlich marin vorkommende Abstract; ↑ nach Philipp Alderslade; ↑ Thailand: Deutsche Touristin stirbt nach Würfelquallen-Stich. R. F. Hartwick: Distributional ecology and behaviour of the early life stages of the box-jellyfish Chironex fleckeri. Viele übersetzte Beispielsätze mit "jellyfish" – Deutsch-Englisch Wörterbuch und Suchmaschine für Millionen von Deutsch-Übersetzungen. Übersetzung im Kontext von „"jellyfish“ in Englisch-Deutsch von Reverso Context: jellyfish.
"jellyfish" Deutsch ÜbersetzungÜbersetzung Englisch-Deutsch für jellyfish im PONS Online-Wörterbuch nachschlagen! Gratis Vokabeltrainer, Verbtabellen, Aussprachefunktion. Die Pluralform jellyfish wird insbesondere in kollektiver Bedeutung verwendet; die  Englischer Wikipedia-Artikel „Jellyfish“: [1, 2] PONS Englisch-Deutsch. Übersetzung für 'jellyfish' im kostenlosen Englisch-Deutsch Wörterbuch und viele weitere Deutsch-Übersetzungen.
Jellyfish Deutsch Pet jellyfish - and everything you need to enjoy them VideoHow does a jellyfish sting? - Neosha S Kashef
Most jellyfish do not have specialized systems for osmoregulation , respiration and circulation , and do not have a central nervous system.
Nematocysts, which deliver the sting, are located mostly on the tentacles; true jellyfish also have them around the mouth and stomach. They have limited control over their movement, but can navigate with the pulsations of the bell-like body; some species are active swimmers most of the time, while others largely drift.
The rhopalial ganglia contain pacemaker neurones which control swimming rate and direction. In many species of jellyfish, the rhopalia include ocelli , light-sensitive organs able to tell light from dark.
These are generally pigment spot ocelli, which have some of their cells pigmented. The rhopalia are suspended on stalks with heavy crystals at one end, acting like gyroscopes to orient the eyes skyward.
Certain jellyfish look upward at the mangrove canopy while making a daily migration from mangrove swamps into the open lagoon, where they feed, and back again.
Each individual has 24 eyes , two of which are capable of seeing colour, and four parallel information processing areas that act in competition,  supposedly making them one of the few kinds of animal to have a degree view of its environment.
The smallest jellyfish are the peculiar creeping jellyfish in the genera Staurocladia and Eleutheria , which have bell disks from 0.
They can reproduce asexually by fission splitting in half. Other very small jellyfish, which have bells about one millimeter, are the hydromedusae of many species that have just been released from their parent polyps;  some of these live only a few minutes before shedding their gametes in the plankton and then dying, while others will grow in the plankton for weeks or months.
The hydromedusae Cladonema radiatum and Cladonema californicum are also very small, living for months, yet never growing beyond a few mm in bell height and diameter.
The lion's mane jellyfish , Cyanea capillata , was long-cited as the largest jellyfish, and arguably the longest animal in the world, with fine, thread-like tentacles that may extend up to Jellyfish have a complex life cycle which includes both sexual and asexual phases, with the medusa being the sexual stage in most instances.
Sperm fertilize eggs, which develop into larval planulae, become polyps, bud into ephyrae and then transform into adult medusae.
In some species certain stages may be skipped. Upon reaching adult size, jellyfish spawn regularly if there is a sufficient supply of food.
In most species, spawning is controlled by light, with all individuals spawning at about the same time of day; in many instances this is at dawn or dusk.
In most cases, adults release sperm and eggs into the surrounding water, where the unprotected eggs are fertilized and develop into larvae. In a few species, the sperm swim into the female's mouth, fertilizing the eggs within her body, where they remain during early development stages.
In moon jellies, the eggs lodge in pits on the oral arms, which form a temporary brood chamber for the developing planula larvae. The planula is a small larva covered with cilia.
When sufficiently developed, it settles onto a firm surface and develops into a polyp. The polyp generally consists of a small stalk topped by a mouth that is ringed by upward-facing tentacles.
The polyps resemble those of closely related anthozoans , such as sea anemones and corals. The jellyfish polyp may be sessile , living on the bottom, boat hulls or other substrates, or it may be free-floating or attached to tiny bits of free-living plankton  or rarely, fish   or other invertebrates.
Polyps may be solitary or colonial. The polyp stage may last for years. After an interval and stimulated by seasonal or hormonal changes, the polyp may begin reproducing asexually by budding and, in the Scyphozoa, is called a segmenting polyp, or a scyphistoma.
Budding produces more scyphistomae and also ephyrae. These deepen as the constriction sites migrate down the body, and separate segments known as ephyra detach.
These are free-swimming precursors of the adult medusa stage, which is the life stage that is typically identified as a jellyfish. Limnomedusae polyps can asexually produce a creeping frustule larval form, which crawls away before developing into another polyp.
Some hydromedusae reproduce by fission. Little is known of the life histories of many jellyfish as the places on the seabed where the benthic forms of those species live have not been found.
However, an asexually reproducing strobila form can sometimes live for several years, producing new medusae ephyra larvae each year.
An unusual species, Turritopsis dohrnii , formerly classified as Turritopsis nutricula ,  might be effectively immortal because of its ability under certain circumstances to transform from medusa back to the polyp stage, thereby escaping the death that typically awaits medusae post-reproduction if they have not otherwise been eaten by some other organism.
So far this reversal has been observed only in the laboratory. Using the moon jelly Aurelia aurita as an example, jellyfish have been shown to be the most energy efficient swimmers of all animals.
They pause between the contraction and expansion phases to create two vortex rings. Muscles are used for the contraction of the body, which creates the first vortex and pushes the animal forward, but the mesoglea is so elastic that the expansion is powered exclusively by relaxing the bell, which releases the energy stored from the contraction.
Meanwhile, the second vortex ring starts to spin faster, sucking water into the bell and pushing against the centre of the body, giving a secondary and "free" boost forward.
The mechanism, called passive energy recapture, only works in relatively small jellyfish moving at low speeds, allowing the animal to travel 30 percent farther on each swimming cycle.
Jellyfish achieved a 48 percent lower cost of transport food and oxygen intake versus energy spent in movement than other animals in similar studies.
One reason for this is that most of the gelatinous tissue of the bell is inactive, using no energy during swimming. Jellyfish are like other cnidarians generally carnivorous or parasitic ,  feeding on planktonic organisms, crustaceans, small fish, fish eggs and larvae, and other jellyfish, ingesting food and voiding undigested waste through the mouth.
They hunt passively using their tentacles as drift lines, or sink through the water with their tentacles spread widely; the tentacles, which contain nematocysts to stun or kill the prey , may then flex to help bring it to the mouth.
A few species such as Aglaura hemistoma are omnivorous, feeding on microplankton which is a mixture of zooplankton and phytoplankton microscopic plants such as dinoflagellates.
Other species of jellyfish are among the most common and important jellyfish predators. Sea anemones may eat jellyfish that drift into their range.
Other predators include tunas , sharks, swordfish , sea turtles and penguins. Once jellyfish have become dominant in an ecosystem, for example through overfishing which removes predators of jellyfish larvae, there may be no obvious way for the previous balance to be restored: they eat fish eggs and juvenile fish, and compete with fish for food, preventing fish stocks from recovering.
Some small fish are immune to the stings of the jellyfish and live among the tentacles, serving as bait in a fish trap; they are safe from potential predators and are able to share the fish caught by the jellyfish.
Jellyfish form large masses or blooms in certain environmental conditions of ocean currents , nutrients , sunshine, temperature, season, prey availability, reduced predation and oxygen concentration.
Currents collect jellyfish together, especially in years with unusually high populations. Jellyfish can detect marine currents and swim against the current to congregate in blooms.
Jellyfish may also benefit from saltier waters, as saltier waters contain more iodine , which is necessary for polyps to turn into jellyfish.
Rising sea temperatures caused by climate change may also contribute to jellyfish blooms, because many species of jellyfish are able to survive in warmer waters.
When the phytoplankton die, they may create dead zones , so called because they are ahypoxic low in oxygen. This in turn kills fish and other animals, but not jellyfish,  allowing them to bloom.
They reproduce rapidly; they prey upon many species, while few species prey on them; and they feed via touch rather than visually, so they can feed effectively at night and in turbid waters.
Some jellyfish populations that have shown clear increases in the past few decades are invasive species , newly arrived from other habitats: examples include the Black Sea , Caspian Sea , Baltic Sea , central and eastern Mediterranean , Hawaii , and tropical and subtropical parts of the West Atlantic including the Caribbean , Gulf of Mexico and Brazil.
Jellyfish blooms can have significant impact on community structure. Some carnivorous jellyfish species prey on zooplankton while others graze on primary producers.
High density jellyfish populations can out compete other predators and reduce fish recruitment.
During blooms, jellyfish significantly alter the nutrient availability in their environment. Blooms require large amounts of available organic nutrients in the water column to grow, limiting availability for other organisms.
However, the low carbon availability shifts the process from production to respiration creating low oxygen areas making the dissolved inorganic nitrogen and phosphorus largely unavailable for primary production.
These blooms have very real impacts on industries. Jellyfish can out compete fish by utilizing open niches in over-fished fisheries.
Power plants have been shut down due to jellyfish blocking the flow of cooling water. Jellyfish form a component of jelly-falls , events where gelatinous zooplankton fall to the seafloor, providing food for the benthic organisms there.
Most jellyfish are marine animals, although a few hydromedusae inhabit freshwater. The best known freshwater example is the cosmopolitan hydrozoan jellyfish, Craspedacusta sowerbii.
It is less than an inch 2. Although most jellyfish live well off the ocean floor and form part of the plankton, a few species are closely associated with the bottom for much of their lives and can be considered benthic.
The upside-down jellyfish in the genus Cassiopea typically lie on the bottom of shallow lagoons where they sometimes pulsate gently with their umbrella top facing down.
Even some deep-sea species of hydromedusae and scyphomedusae are usually collected on or near the bottom. All of the stauromedusae are found attached to either seaweed or rocky or other firm material on the bottom.
Some species explicitly adapt to tidal flux. In Roscoe Bay , jellyfish ride the current at ebb tide until they hit a gravel bar , and then descend below the current.
They remain in still waters until the tide rises, ascending and allowing it to sweep them back into the bay. They also actively avoid fresh water from mountain snowmelt, diving until they find enough salt.
Jellyfish are hosts to a wide variety of parasitic organisms. They act as intermediate hosts of endoparasitic helminths , with the infection being transferred to the definitive host fish after predation.
Some digenean trematodes , especially species in the family Lepocreadiidae , use jellyfish as their second intermediate hosts.
Fish become infected by the trematodes when they feed on infected jellyfish. Jellyfish have long been eaten in some parts of the world. Jellyfish are also harvested for their collagen , which is being investigated for use in a variety of applications including the treatment of rheumatoid arthritis.
Aristotle stated in the Parts of Animals IV, 6 that jellyfish sea-nettles were eaten in winter time in a fish stew.
In some countries, including China, Japan, and Korea, jellyfish are a delicacy. The jellyfish is dried to prevent spoiling. Only some 12 species of scyphozoan jellyfish belonging to the order Rhizostomeae are harvested for food, mostly in southeast Asia.
Traditional processing methods, carried out by a jellyfish master, involve a to day multi-phase procedure in which, after removing the gonads and mucous membranes , the umbrella and oral arms are treated with a mixture of table salt and alum , and compressed.
Processing makes the jellyfish drier and more acidic, producing a crisp texture. It is believed that the Jellyfish is one of the oldest living creatures on Earth.
There is evidence to suggest that they have been around for over million years. Such information is based on fossil remains that have been carefully collected and analyzed.
These creatures live in ocean waters around the world. They live in various temperatures of water and depths of the water depending on their specific species.
Some of them are less than an inch in diameter while others are very large. It has feet long, including the tentacles.
They range in a vast variety of colors, sizes, and shapes. Unrelated forms such as comb jellies phylum Ctenophora and salps phylum Chordata are also referred to as jellyfish.
Scyphozoan jellyfish can be divided into two types, those that are free-swimming medusae and those that are sessile i. The sessile polyplike forms constitute the order Stauromedusae.
Free-swimming scyphozoan jellyfish occur in all oceans and include the familiar disk-shaped animals that are often found drifting along the shoreline.
Most live for only a few weeks, but some are known to survive a year or longer. The bodies of most range in size from about 2 to 40 cm 1 to 16 inches in diameter; some species are considerably larger, however, with diameters of up to 2 metres 6.
Scyphozoan medusae consist of almost 99 percent water as a result of the composition of the jelly that forms the bulk in nearly all species.
Most feed on copepods, fish larvae , and other small animals that they catch in their tentacles, which have stinging cells nematocysts.
Some, however, simply suspension feed, extracting minute animals and algae phytoplankton from the water. Like all cnidarians, their bodies are made up of two cellular layers, the ectoderm and the endoderm, between which lies the gelatinous mesoglea.
In jellyfish the transparent mesoglea layer is quite thick. The life cycle of free-swimming scyphozoan jellyfish typically consists of three stages.
A sessile polyp scyphistoma stage asexually buds off young medusae from its upper end, with each such ephyra growing into an adult. The adults are either male or female, but in some species they change their sex as they age.
In many species, normal fusion of egg and sperm results in an embryo that is brooded in the gut of the adult until it becomes a ciliated planula larva, but in some this development takes place in the sea.
After the planula larva leaves its parent, it lives for a time in the plankton and eventually attaches to a rock or other solid surface, where it grows into a new scyphistoma.
Such a life cycle characterizes the order Semaeostomeae , which contains some 50 species of mainly coastal-water jellyfish, several of which have very wide geographic ranges.
Included among these are members of the genera Aurelia and Chrysaora and the big red jellyfish, Tiburonia granrojo subfamily Tiburoniinae , one of only three species of jellyfish that lack tentacles.
The order Coronatae includes about 30 species of mostly deep-sea jellyfish, often maroon in colour. Pet jellyfish - and everything you need to enjoy them.
Generation 2 - Jelly Cylinder 5 - 1 Lg. Blog posts. August 24, Read More. How to Cycle Your Jellyfish Aquarium?Complete sewn of film. Im unteren Teil, bis etwa auf Höhe der Rhopalien Gewinn 3 Richtige Plus Superzahl sich jede Gastraltasche durch Ausstülpungen der Wand in zwei schmalere, vertikale randliche Taschen. Qualle genannt. via-veritas.com | Übersetzungen für 'jellyfish' im Englisch-Deutsch-Wörterbuch, mit echten Sprachaufnahmen, Illustrationen, Beugungsformen. Jellyfish Facts and Information Phylum Cnidaria. Jellyfish Facts and Information. Feeding, habitat, distribution, reproduction, anatomy and more. Facts about Moon Jellyfish, Box Jellyfish, Lion’s Mane Jellyfish and Others. Introduction to Jellyfish. It is believed that the Jellyfish is one of the oldest living creatures on Earth. Lernen Sie die Übersetzung für 'jellyfish' in LEOs Englisch ⇔ Deutsch Wörterbuch. Mit Flexionstabellen der verschiedenen Fälle und Zeiten Aussprache und relevante Diskussionen Kostenloser Vokabeltrainer. The purple jellyfish, also known as the mauve stinger, is a beautiful jellyfish with long tentacles and oral arms. Is it a Jellyfish? Yes Identification: The purple jellyfish is a small jellyfish whose bell grows to about 2 inches across. They have a purplish translucent bell that is dotted with red and long oral arms that trail behind them. Box jellyfish is a specie of Jellyfish that is well known for being one of the most poisonous marine animal on Earth. It has a cube like structure (medusae) due to which it is called box jellyfish. It is also known as sea wasp or stingers among the people but these names are also used for other species of jellyfish. Übersetzung für 'jellyfish' im kostenlosen Englisch-Deutsch Wörterbuch von LANGENSCHEIDT – mit Beispielen, Synonymen und Aussprache. Übersetzung Englisch-Deutsch für jellyfish im PONS Online-Wörterbuch nachschlagen! Gratis Vokabeltrainer, Verbtabellen, Aussprachefunktion. Englisch-Deutsch-Übersetzungen für jellyfish im Online-Wörterbuch via-veritas.com (Deutschwörterbuch). Die Würfelquallen (Cubozoa) bilden eine kleine, fast ausschließlich marin vorkommende Abstract; ↑ nach Philipp Alderslade; ↑ Thailand: Deutsche Touristin stirbt nach Würfelquallen-Stich. R. F. Hartwick: Distributional ecology and behaviour of the early life stages of the box-jellyfish Chironex fleckeri. Only some 12 species of scyphozoan jellyfish belonging to the order Rhizostomeae are harvested for food, mostly in southeast Asia. Monarch Spielautomat America. Other predators include tunas Dart Wm Gewinner, sharks, swordfishsea turtles and penguins. E; Graham, W. Retrieved 28 August The Science of Biology. A sessile polyp scyphistoma stage asexually buds Sonderjyske Fc young medusae from its upper end, with each such ephyra growing into an adult. Aquatic Invasions. Japan Jellyfish Deutsch. Bibcode : PLoSO Retrieved 22 October In all the box jellies so far studied, the polyp stage produces but a single medusa. They live in various temperatures of water and depths of the water depending on their specific species. Normally, there is no real danger to humans with the exception of people suffering from special allergies. The jellyfish are pelagic for most of their lives but tend to settle in shallow, sheltered bays toward the end of their one-year lifespan. If there is contact with a large number of tentacles, however, medical attention is recommended after exposure.