Hydrozoa |
Leptothecata |
Sertulariidae
Environment: milieu / climate zone / εύρος βάθους / distribution range
Οικολογία
βενθικό(ς); εύρος βάθους 90 - 522 m (Αναφ. 7416). Polar
Antarctic Atlantic: South Shetland and Antarctica.
Length at first maturity / Μέγεθος / Weight / Age
Γεννητική Ωρίμανση: Lm ?  range ? - ? cm Max length : 1.5 cm H αρσενικό/απροσδιόριστο; (Αναφ. 7416)
Tiny stems up to ca 0.5 cm long. Stem internodes long and distinctly arranged in zig-zag fashion. Hydrothecae situated at the end of stem internode. Hydrotheca almost tubular and directed up- and outwards. Hydrotheca free for most of its adcauline wall; free part of adcauline hydrothecal wall straight. Hydrotheca with a distinct inflexion point where adcauline wall becomes free. Abcauline wall straight or slightly abcaudally directed at its distal part. Cusps of hydrothecal aperture sharp and separated by deep embayments. Hydrotheca widening at the aperture.
Found at depths of 90 to 522 m; on Bryozoans and hydroids (Ref. 7416).
Life cycle and mating behavior
Γεννητική Ωρίμανση | Αναπαραγωγή | Γεννοβολία | Eggs | Γονιμότητα | Larvae
Members of the order Leptothecata include L-form hydroids. Life cycle: The zygote develops into planula and later into polyp then into free-swimming medusa.
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 dynamicsΑύξηση
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
Αφθονία
Life cycleΑναπαραγωγήΓεννητική ΩρίμανσηΓονιμότηταΓεννοβολίαEggsEgg developmentLarvae PhysiologyΚατανάλωση οξυγόνου
Human RelatedStamps, coins, misc.
Διαδικτυακές πηγές
Estimates based on models
Preferred temperature
(Ref.
115969): -0.9 - 1.1, mean 0.1 (based on 22 cells).
Fishing Vulnerability
Low vulnerability (10 of 100).