Chrysaora pacifica
| Chrysaora pacifica | |
|---|---|
 | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Cnidaria |
| Class: | Scyphozoa |
| Order: | Semaeostomeae |
| Family: | Pelagiidae |
| Genus: | Chrysaora |
| Species: | C. pacifica |
| Binomial name | |
| Chrysaora pacifica (Goette, 1886) | |
| Synonyms | |
| |
Chrysaora pacifica, commonly named the Japanese sea nettle, is a jellyfish in the family Pelagiidae.[1]
Description
[edit]The medusae of C. pacifica typically has a bell with a diameter of 15–21 cm (5.9–8.3 in).[2] The bell is divided into 8 sections with the outer exumbrella being finely granulated with 32 reddish colored radial stripes. The inner mesoglea of the bell is translucent and thickest in the central portion, thinning around the edges.
The central mouth of the jelly has 4 oral arms that are 2-3 times longer than the diameter of the bell. These delicate, curtain-like arms have finely fringed margins covered in nematocyst warts. Along the margin of the bell are 40 tentacles that are elastic and grow to be a similar length to the oral arms.[2]
Distribution
[edit]C. pacifica is found across the northwest Pacific Ocean, including Japan, Korea, Taiwan, and China.[3] The sea nettle was formerly confused with the larger and more northerly distributed C. melanaster.[2] As a consequence, individuals kept in public aquariums have often been mislabeled as C. melanaster.[4] Within C. pacifica's range, it surivives the best in water temperatures 20-24°C.[3]
Biology
[edit]If the jellyfish sustained injuries, they would go through the process of symmetrization, in which they would restructure their figures by moving around existing parts and not recreating the ones lost to maintain balance.[5]
C. pacifica's sting is strong and can be dangerous to humans.[2][6]
References
[edit]- ↑ "WoRMS - World Register of Marine Species - Chrysaora pacifica (Goette, 1886)". www.marinespecies.org. Retrieved 2018-01-21.
- 1 2 3 4 Lee, H.E.; Yoon, W.D.; Chae, J.; Ki, J.-S. (2016). "Re-description of Chrysaora pacifica (Goette, 1886) (Cnidaria, Scyphozoa) from Korean Coastal waters: morphology and molecular comparisons". Ocean and Polar Research. 38 (4): 295–301. doi:10.4217/opr.2016.38.4.295.
- 1 2 Shin, Kyong-Ho; Choi, Keun-Hyung (2026-04-09). "The Effects of Temperature on the Growth, Survival, and Feeding of Chrysaora pacifica (Cnidaria: Scyphozoa) Ephyrae". Biology. 15 (8): 597. doi:10.3390/biology15080597. ISSN 2079-7737. PMC 13113277. PMID 42041875.
- ↑ Gaffney, Patrick M.; Collins, Allen G.; Bayha, Keith M. (2017-10-13). "Multigene phylogeny of the scyphozoan jellyfish family Pelagiidae reveals that the common U.S. Atlantic sea nettle comprises two distinct species (Chrysaora quinquecirrha and C. chesapeakei)". PeerJ. 5 e3863. Bibcode:2017PeerJ...5e3863B. doi:10.7717/peerj.3863. ISSN 2167-8359. PMC 5642265. PMID 29043109.
- ↑ Abrams, Michael J.; Basinger, Ty; Yuan, William; Guo, Chin-Lin; Goentoro, Lea (June 15, 2015). Tabin, Clifford J. (ed.). "Self-repairing symmetry in jellyfish through mechanically driven reorganization". Proceedings of the National Academy of Sciences. 112 (26): E3371. Bibcode:2015PNAS..112E3365A. doi:10.1073/pnas.1502497112. PMC 4491739. PMID 26080418.
- ↑ Ikawa, Y.; Fujita, N.; Yachi, Y.; Inoue, N.; Kato, A.; Kuroda, M.; Yachie, A. (October 2016). "Cover Image: Life-threatening complications of jellyfish Chrysaora pacifica stings in a 5-year-old child". British Journal of Dermatology. 175 (4): 837–838. doi:10.1111/bjd.14856. PMID 27650747.
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