Hydrozoa |
Leptothecata |
Sertulariidae
Environment: milieu / climate zone / depth range / distribution range
Ecology
Demersal; depth range 86 - 402 m (Ref. 7416). Polar
Western Antarctic.
Length at first maturity / Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Colonies consisting of either incipient stems arising from stolonal hydrorhiza or numerous tangled stems and branches giving rise to a mass-shaped colony without distinct main stem. Branching frequent, irregular and in several planes; branches forming anastomosing tendrils distally. A few branches giving rise to new branches after such a stolonal part. Branches originating laterally at the hydrothecal base; plane formed by hydrothecae of lower-order branch perpendicular to that formed by those of previous branch. Branches and stems divided into hydrothecate internodes separated by oblique nodes sloping in alternate directions; one hydrotheca per internode. Hydrothecae large, almost cylindrical, placed on distal half of internode and abcaudally directed. Adcauline wall adnate to internode for less than half its length. Free portion of adcauline hydrothecal wall slightly convex. Abcauline hydrothecal wall slightly concave. Cusps of hydrothecal aperture sharp and separated by deep embayments. Hydrothecal rim repeatedly renovated. Perisarc of hydrotheca thin, collapsing easily.
Gonothecae ovoid, inserted at hydrothecal base by means of short pedicel. Wall of gonotheca smooth or wavy; gonothecal aperture at end of a short, distal neck with widening aperture.
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Fertile colonies were collected on January and February.
Peña Cantero, A.L., A. Svoboda and W. Vervoort. 2002. (Ref. 7416)
IUCN Red List Status (Ref. 130435: Version 2024-1)
CITES status (Ref. 108899)
Not Evaluated
Not Evaluated
Threat to humans
Harmless
Human uses
| FishSource |
Tools
More information
Trophic EcologyFood items
Diet
Food consumption
Ration
Predators
Population dynamicsGrowth
Age/Size
Length-weight
Length-length
Length-frequencies
Mass conversion
Recruitment
Abundance
Life cycleReproductionMaturityFecunditySpawningEggsEgg developmentLarvaeLarval dynamics Human RelatedAquaculture profile
Stamps, Coins Misc.
Internet sources
Estimates based on models
Preferred temperature
(Ref.
115969): -1.7 - 0.7, mean -0.9 (based on 90 cells).