Deepstaria enigmatica
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| Russell , 1967 |
Deepstaria enigmatica is a jellyfish from the Ulmaridae family that has rarely been observed. It was discovered in 1966 at a depth of 723 m off Southern California with the research submarine Deepstar. A in 2012 by an underwater robot at a depth of 1590 m gesichtetes copy was first for the placenta of Wales held. The specific epithet "enigmatica" means "enigmatic" (from Greek αἴνιγμα , "the riddle").
features
For lack of completeness, the fragments of several copies are combined for the description. The umbrella is exceptionally thin, filigree and quite flat when relaxed. The diameter reaches about 60 cm, the mesogloea , which thins towards the edges, is 1 to 2 cm thick. The number of 8 to 20 Rhopalia may increase with growth, the marginal lobes are small to clear. Depending on the source, the narrow stomach measures about 1/10 to 1/6 the diameter of the umbrella. The species has 8 to about 20 radial canals that branch off into a conspicuous, wire-netting-like canal system and a ring canal. Near the 4 to 5 narrow oral arms are reportedly the 4 to 5 short-stalked and lobed gonads . Deepstaria enigmatica is usually described as colorless, but a brownish specimen has also been reported.
distribution
Deepstaria enigmatica is found in the northeastern Pacific and southern waters of the Indian and Atlantic Oceans. One specimen was caught in the Gulf of Mexico and several in the Scotia Sea . Perhaps the way is a cosmopolitan of the deep sea .
Habitat and way of life
The jellyfish is a resident of the Mesopelagial and is sometimes infested by the deep-sea anuropus . This lives at least temporarily in the jellyfish's umbrella and seems to feed on its organs. This can even cause the jellyfish to become immobile.
Individual evidence
- ^ Russell, FS (1967): On a remarkable new scyphomedusan . Journal of the Marine Biological Association of the United Kingdom, 47 (3). pp. 469-473. ( Online ( Memento of the original from October 25, 2012 in the Internet Archive ) Info: The archive link was automatically inserted and not yet checked. Please check the original and archive link according to the instructions and then remove this note. )
- ↑ Craig McClain: Solving the Mystery of the Placental Jellyfish
- ↑ Giant jellyfish triggers guesswork. Video. In: SPIEGEL ONLINE GmbH. SPIEGEL ONLINE, May 14, 2012, accessed on May 14, 2012 (with video recording of the animal).
- ^ A b c D. G. Fautin: More Antarctic and Subantarctic sea anemones (Coelenterata: Corallimorpharia and Actiniaria) , Antarctic Research Series, Vol. 41, 1986, pp 119-121.
- ↑ Deepstaria enigmatica - Entry in the Marine Species Identification Portal
- ^ Database of Antarctic and Subantarctic Marine Invertebrates. National Museum of Natural History, Smithsonian Institution: Deepstaria enigmatica ( Memento of the original from September 25, 2013 in the Internet Archive ) Info: The archive link has been inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice.
- ↑ Reports Biochemie und Biologie Volume 328, Springer 1970
