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

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

Pélagique. Polar

Distribution Pays | Zones FAO | Écosystèmes | Occurrences | Introductions

Antarctic Atlantic: Southern Ocean.

Length at first maturity / Taille / Poids / Âge

Maturity: L_m ? range ? - ? cm Max length : 9.5 cm WD mâle / non sexé; (Ref. 7450)

Description synthétique Morphologie

Umbrella transparent and yellowish, disc-shaped, 9.5 cm in diameter, flattened, smooth, with thin but firm mesoglea. Stomach circular, very large, 7.7 cm in diameter including stomach pouches, mouth circular with no pronounced lips; stomach wall thin, yellowish and slightly opaque. Stomach pouches 31, interradial, irregular in shape ranging from rectangular to square, each one with a prominent globular gelatinous protuberance of the umbrellar mesoglea contained within the distal half, giving the general appearance of a rosary chain within the circumference of the umbrella. Each mesogleal protuberance is completely laterally contained within each stomach pouch cavity, without attachments to the lateral walls, and extends into the subumbrella, almost but not completely blocking the distal-most portion of the stomach pouch. Marginal lappets 31 to 32, interradial, larger than stomach pouches, mostly rectangular in shape but a few slightly trapezoidal (minor base centripetal), with distal corners rounded. Peripheral canal system present. Canals uniformally wide, usually wider than the central part of each lappet, and extending vertically along both sides of each peronia. Otoporpae absent. Tentacles 31 (plus one partially developed tentacle base), about 4 to 5 cm in length, rising from roots of variable length embedded between the distal portions of stomach pouches. Peronia 32, fusiform, simple, of irregular length, without cnidocysts, tapering out distally. Gonads not observed. Velum complete, very thin, 0.2 cm wide.

Life cycle and mating behavior Maturité | Reproduction | Frai | Œufs | Fécondité | Larves

Members of the order Narcomedusae include L-form hydroids. Life cycle: The zygote develops into planula and later into polyp then into free-swimming medusa.

Référence principale Références | Coordinateur | Collaborateurs

Fuentes, V. and F. Pagès. 2006. (Ref. 7450)

Statut dans la liste rouge de l'IUCN (Ref. 130435)

Non évalué

statut CITES (Ref. 108899)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Menace pour l'homme

Harmless

Utilisations par l'homme

| FishSource |

Outils

E-book | Guide de terrain

Plus d'informations

Pays
Zones FAO
Écosystèmes
Occurrences
Introductions
Stocks
Écologie
Régime alimentaire
Éléments du régime alimentaire

Noms communs
Synonymes
Prédateurs
Reproduction
Maturité
Frai
Fécondité
Œufs
Développement de l'œuf

Taille/Âge
Croissance
Longueur-poids
Longueur-longueur
Morphologie
Larves
Abondance

Références
Mass conversion

Collaborateurs
Images

Sources Internet

Estimates based on models

Vulnérabilité (Ref. 71543): Low vulnerability (10 of 100).

Jubanyella plemmyris Fuentes & Pagès, 2006