Hydrozoa |
Trachymedusae |
Rhopalonematidae
Environment: milieu / climate zone / depth range / distribution range
Ecology
Bathypelagic; depth range 1583 - 2034 m (Ref. 7457). Polar
Antarctic: Weddell Sea.
Length at first maturity / Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Characterized by the number and irregular shape of the centripetal canals.
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Members of the order Trachymedusae include L-form hydroids. Life cycle: The zygote develops into planula and later into polyp then into free-swimming medusa.
Bouillon, J., F. Pages and J.-M. Gili 2001 New species of benthopelagic hydromedusae from Weddell Sea. Polar Biol. 24(11):839-845. (Ref. 7457)
IUCN Red List Status
(Ref. 130435: Version 2025-1)
CITES status (Ref. 108899)
Not Evaluated
Not Evaluated
Threat to humans
Harmless
Human uses
| FishSource |
Tools
More information
Trophic EcologyFood items (preys)
Diet composition
Food consumption
Predators
Population dynamicsGrowth
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
Abundance
Life cycleReproductionMaturityFecunditySpawningEggsEgg developmentLarvae PhysiologyOxygen consumption
Human RelatedStamps, coins, misc.
Internet sources
Estimates based on models