Biology:Aequoreidae
| Aequoreidae | |
|---|---|
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| Aequorea victoria (the "crystal jelly") with two amphipods | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Cnidaria |
| Class: | Hydrozoa |
| Order: | Leptothecata |
| Family: | Aequoreidae Eschscholtz, 1829 |
| Genera[1] | |
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Aequoreidae is a family of hydrozoans, sometimes called the many-ribbed jellies or many-ribbed jellyfish.[2][3] There are approximately 30 known species found in temperate and tropical marine coastal environments.[4] Aequoreids include Aequorea victoria, the organism from which the green fluorescent protein gene was isolated.[5]
Polyps
Only the polyp stages of Aequorea species have been observed.[6] The colonies are covered with chitinous periderm and can be either prostrate or erect with weak or sympodial branching.[6] Young hydranths possess hydrothecae with a closing structure called operculum,[6] which consists of several relatively long triangular folds that meet together in the centre when a disturbed polyp contracts.[6] Because the operculum is quite fragile, hydrothecae of old polyps usually have only a small chitinous collar remaining.[6] Comparatively large cylindrical gonothecae are attached to the colony with a thin peduncle.[6] Commonly only one medusa develops in each gonotheca.[6]
Medusae
Mature aequoreid medusae are diverse in shape, from lens-like to conical, and in size.[4] The smallest, Aequerea parva is only 0.6 cm in diameter, while the largest, Rhacostoma atlanticum, can reach 40 cm in diameter.[4][6] The medusae of most species are between 5 and 15 cm in diameter.[4]
Genera
Aequoreidae includes the following genera:[1]
- Aequorea Péron et Lesueur, 1810 – ca. 20 valid species
- Aldersladia Gershwin, 2006 – 1 valid species
- Gangliostoma Xu, 1983 – 2 valid species
- Rhacostoma L. Agassiz, 1850 – 1 valid species
- Zygocanna Haeckel, 1879 – 5 valid species
See also
References
- ↑ 1.0 1.1 Peter Schuchert (2011). "Aequoreidae". World Hydrozoa database. World Register of Marine Species. http://www.marinespecies.org/aphia.php?p=taxdetails&id=13553.
- ↑ "Many-ribbed Jellies (Family Aequoreidae)". https://inaturalist.ca/taxa/171652-Aequoreidae.
- ↑ Pollock, Leland W. (November 5, 1998). A Practical Guide to the Marine Animals of Northeastern North America. Rutgers University Press. ISBN 9780813523996. https://books.google.com/books?id=i1AmT31cuR4C&dq=Aequoreidae++%22Many-ribbed+Jellyfish%22&pg=PA73.
- ↑ 4.0 4.1 4.2 4.3 Kramp, P. L. (1961). Synopsis of the medusae of the world. Journal of the Marine Biological Association of the United Kingdom 40: 1–469. P. 203–212. The full text
- ↑ Tsien, R. (1998). The green fluorescent protein. Annual Review of Biochemistry 67: 509–44. The full text. doi:10.1146/annurev.biochem.67.1.509.
- ↑ 6.0 6.1 6.2 6.3 6.4 6.5 6.6 6.7 Bouillon, J., Gravili, C., Pagès, F., Gili, J. M., Boero, F. (2006). An introduction to Hydrozoa. Mémoires du Muséum national d’Histoire naturelle 194: 1–591, p. 276–278.
Wikidata ☰ Q786058 entry
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