Hydrozoa |
Leptothecata |
Sertulariidae
Environment: milieu / climate zone / εύρος βάθους / distribution range
Οικολογία
; εύρος βάθους 20 - 640 m (Αναφ. 7416). Polar
Circum-Antarctic.
Length at first maturity / Μέγεθος / Weight / Age
Γεννητική Ωρίμανση: Lm ?  range ? - ? cm Max length : 4.5 cm H αρσενικό/απροσδιόριστο; (Αναφ. 7416)
Colonies composed of a stolonal hydrorhiza giving rise to erect, monosiphonic and sparingly branched stems up to 4.5 cm high. Branches irregularly branched in several planes, occasionally with anastomoses. Hydrothecae alternately arranged in approximately one plane. Hydrotheca large, almost cylindrical; markedly bent abcaudally, usually with a clear
inflexion point where adcauline hydrothecal wall becomes free. Adcauline hydrothecal wall adnate for approximately one-third of its length; free part of adcauline wall convex. Abcauline wall concave. Cusps of hydrothecal aperture sharp and separated by deep embayments.
Gonothecae oval, inserting at hydrothecal base. Gonothecal aperture situated at the end of a short and wide distal neck, slightly widening distally. Gonothecal wall slightly undulated and with fine striae.
Known from 20 to 640 m on muddy, stony and bottoms of hydroids, sponges and algae (Ref. 7416).
Life cycle and mating behavior
Γεννητική Ωρίμανση | Αναπαραγωγή | Γεννοβολία | Eggs | Γονιμότητα | Larvae
Fertile colonies were collected on January.
Peña Cantero, A.L., A. Svoboda and W. Vervoort 2002 Species of Stymplectoscyphus Marktanner-Turneretscher, 1980 (Cnidaria; Hydrozoa: Sertulariidae) from recent Antarctic expeditions with R.V. Polarsten, with the description of four new species. Journal of Natural History 36:1509-1568. (Αναφ. 7416)
IUCN Red List Status
(Αναφ. 130435: Version 2025-1)
CITES status (Αναφ. 108899)
Not Evaluated
Not Evaluated
Threat to humans
Harmless
Human uses
| FishSource |
Εργαλεία
Περισσότερες πληροφορίες
Τροφική ΟικολογίαFood items (preys)
Σύσταση δίαιτας
Κατανάλωση τροφής
Θηρευτές
Population dynamicsΑύξησηMax. ages / sizesLength-weight rel.Length-length rel.Length-frequenciesMass conversionΑφθονία Life cycleΑναπαραγωγήΓεννητική ΩρίμανσηΓονιμότηταΓεννοβολίαEggsEgg developmentLarvae PhysiologyΚατανάλωση οξυγόνου
Human RelatedStamps, coins, misc.
Διαδικτυακές πηγές
Estimates based on models
Preferred temperature
(Ref.
115969): -1.8 - 0.3, mean -1 (based on 157 cells).
Fishing Vulnerability
Low vulnerability (10 of 100).