Rhizostoma pulmo   (Macri, 1778)

barrel jellyfish
Upload your photos and videos
| All pictures | Google image |
Image of Rhizostoma pulmo (barrel jellyfish)
Rhizostoma pulmo
Picture by Pillon, Roberto

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

Scyphozoa | Rhizostomeae | Rhizostomatidae

Environment / Climate / Range Ecology

Pelagic.  Subtropical

Distribution Countries | FAO areas | Ecosystems | Occurrences | Introductions

Northeast Atlantic and the Mediterranean.

Length at first maturity / Size / Weight / Age

Maturity: Lm ?  range ? - ? cm Max length : 90.0 cm WD male/unsexed; (Ref. 358); common length : 60.0 cm WD male/unsexed; (Ref. 358)

Short description Morphology

Diameter of about 60 cm, exceptionally 90 cm. The sunshade is very bent, sometimes even higher than broad; the periphery is deprived of tentacles, replaced by approximately 80-90 lobes distributed on the entire circumference. One counts 8 very long oral; only braided arms towards their base; and comprising with milonguor of the appendices dermic in the cauliflower shape, while the ends smooth and are not ramified. Color: blue; yellow or pink milky; blue lobes ombrellaires with purple darker.

Biology     Glossary (e.g. epibenthic)

Largest in the Mediterranean, is rather not very irritant: the cnidocytes are slightly poisonous and do not transpierce the human skin; there is thus no risk of lesion. Habitat: Swim in the vicinity of surface in pelagic zone, but also in littoral zone. Biology: It is frequently observed that specimens are wrapped of alevins swarm of various species. This association is described in the works specialized like relation of protection, whose only alevins would benefit, but one knows few things on this subject. According to other observers, the fish would nourish themselves inter alia sexual organs of the jellyfish-host, which would thus constitute a form of parasitism. But of other authors make state of a cleaning of the jellyfish by alevins, which directs the relation towards a symbiosis. One supposes consequently that associations of jellyfishes and fish cover several aspects; spreading out parasitism with true symbiosis (Ref. 358). Members of the class Scyphozoa are gonochoric. Life cycle: Egg is laid by the adult medusa which later develops into a free-living planula, then to a scyphistoma to a strobila, and lastly to a free-living young medusa (Ref. 833).

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

Members of the class Scyphozoa are gonochoric. Life cycle: Egg is laid by the adult medusa which later develops into a free-living planula, then to a scyphistoma to a strobila, and lastly to a free-living young medusa.

Main reference References | Coordinator | Collaborators

Göthel, H. 1992. (Ref. 358)

IUCN Red List Status (Ref. 115185)

CITES status (Ref. 108899)

Not Evaluated

Threat to humans

Human uses


| FisheriesWiki |

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

Internet sources

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

Estimates of some properties based on models

Vulnerability (Ref. 71543)
High vulnerability (56 of 100)
Price category (Ref. 80766)
Unknown