Hydrozoa |
Leptothecata |
Sertulariidae
Environment: milieu / climate zone / εύρος βάθους / distribution range
Οικολογία
βαθύβιο(ς); εύρος βάθους 100 - 1158 m (Αναφ. 7414). Polar
Circum-Antarctic.
Length at first maturity / Μέγεθος / Weight / Age
Γεννητική Ωρίμανση: Lm ?  range ? - ? cm
Hydrothecae arranged in decussate verticils of three to four hydrothecae forming six to eight longitudinal rows. Hydrothecae immersed into the stem and branches for approximately half their volume and adnate for almost full adcauline length. In lateral view hydrotheca cylindrical and slightly curved outwards. In frontal view maximum hydrothecal diameter at the hydrothecal base, from where diameter smoothly decreasing towards the aperture. Abcauline hydrothecal wall slightly concave. Hydrothecal aperture circular and tilted downwards, forming an acute angle with long axis of stem. Rim of hydrotheca even, frequently with a few, short renovations. Diaphragm mushroom-shaped, with two abcauline projections pointing towards the hydrothecal lumen. Both male and female gonothecae present, originating at the hydrothecal base. Proximal part of female gonotheca cone-shaped, distally with a wide neck bearing a strongly laterally depressed aperture due to the presence of two lips of approximately equal development. Male gonotheca fusiform, provided with a distal neck bearing a small, circular aperture.
Maximum depth from Ref. 92909. Found on pebbles, gravel bottoms and stones at depths between 100 m (Ref. 7414) to 1,158 m (Ref. 92909).
Life cycle and mating behavior
Γεννητική Ωρίμανση | Αναπαραγωγή | Γεννοβολία | Eggs | Γονιμότητα | Larvae
Fertile colonies were collected in January, February and April; materials were collected in January and March having gonothecae.
Peña Cantero, A.L. and W. Vervoort 2003 Species of Staurotheca Allman, 1888 (Cnidaria; Hydrozoa: Sertulariidae) from US Antarctic expeditions, with the description of three new species. Journal of Natural History 37:2653-2722. (Αναφ. 7414)
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): -1.6 - 1.4, mean -0.1 (based on 646 cells).