Nemopilema nomurai   Kishinouye, 1922

Nomura's jellyfish

Native range | All suitable habitat | Point map | Year 2050
This map was computer-generated and has not yet been reviewed.
Nemopilema nomurai  AquaMaps  Data sources: GBIF OBIS
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Nemopilema nomurai

Classification / Names Common names | Synonyms | CoL | ITIS | WoRMS

Scyphozoa | Rhizostomeae | Rhizostomatidae

Environment: milieu / climate zone / depth range / distribution range Ecology

Pelagic; depth range 0 - 176 m (Ref. 122799).  Subtropical; 52°N - 29°N, 117°E - 142°E (Ref. 121705)

Distribution Countries | FAO areas | Ecosystems | Occurrences | Introductions

Northwest Pacific: endemic to the East Asian Marginal Seas.

Length at first maturity / Size / Weight / Age

Maturity: Lm ?  range ? - ? cm Max length : 200 cm WD male/unsexed; (Ref. 99323); max. published weight: 200.0 kg (Ref. 3010); max. reported age: 1.00 years (Ref. 100320)

Biology     Glossary (e.g. epibenthic)

One of the largest jellyfish species (Ref. 3010). Occurrence of jellyfish bloom has threatened the fisheries in Japan since early 2000s, possibly because of global warming - note that the growth of medusae are dependent on high temperatures (Ref. 100320). Occurs in semi-enclosed basins of marginal seas (Ref. 122853) and also found offshore (Ref. 122855). Before the chitin-covered podocysts develop into adults, they remain dormant for at least 6 years. Jellyfish blooms occur by mass excystment of these podocysts upon exposure to high temperatures (Ref. 100312).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Life cycle: Fertilized egg develops into a planula larva after 1 day. Planula swims for 4 to 8 days until it becomes a translucent, whitish and dome-shaped scyphistoma and settles at the bottom. Becomes a fully-developed scyphistoma after 10 to 20 days of settlement. Also exhibits asexual reproduction by means of podocyst formation (as many as 18 podocysts on a single original scyphistoma within 7 days to 3 months). Scyphistoma colony develops from podocyst of original scyphistoma within 6 months at 18°C. Fully-developed scyphistoma develops into a strobila after a day and becomes a liberated ephyra with 5 to 7 days. Becomes a fully-developed metaphyra within 30 days of post-liberation and becomes a young medusa within 40 to 50 days of post-liberation (Ref. 3004). Furthermore, ephyrae are released into the plankton during early summer. After subsequent sexual reproduction, the medusae die during winter. The life span of the medusae is less than a year (Ref. 100320).

Main reference References | Coordinator | Collaborators

Kawahara, M., S.-I. Uye, K. Ohtsu and H. Iizumi. 2006. (Ref. 3004)

IUCN Red List Status (Ref. 130435)

  Not Evaluated 

CITES status (Ref. 108899)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless

Human uses

Fisheries: commercial
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Tools

E-book | Field guide

More information

Countries
FAO areas
Ecosystems
Occurrences
Introductions
Stocks
Ecology
Diet
Food items
Common names
Synonyms
Predators
Reproduction
Maturity
Spawning
Fecundity
Eggs
Egg development
Age/Size
Growth
Length-weight
Length-length
Morphology
Larvae
Abundance
References
Mass conversion
Collaborators
Pictures

Internet sources

BHL | BOLD Systems | CISTI | DiscoverLife | FAO(Publication : search) | Fishipedia | GenBank (genome, nucleotide) | GloBI | Gomexsi | Google Books | Google Scholar | Google | PubMed | Tree of Life | Wikipedia (Go, Search) | Zoological Record

Estimates based on models

Vulnerability (Ref. 71543): Very high vulnerability (90 of 100).
Price category (Ref. 80766): Unknown.