Hydrozoa |
Leptothecata |
Sertulariidae
Environment: milieu / climate zone / depth range / distribution range
Ecologia
Demersale; distribuzione batimetrica 420 - 470 m (Ref. 7416). Polar
Antarctic Pacific: Antarctica.
Length at first maturity / Size / Peso / Age
Maturity: Lm ?  range ? - ? cm Max length : 7.5 cm H maschio/sesso non determinato; (Ref. 7416)
Colony composed of a discoidal hydrorhiza giving rise to an erect, branched stem ca 7.5 cm high and polysiphonic over almost its total length. Stem giving rise to branches irregularly arranged in approximately one plane, sometimes with alternate arrangement. Some branches distinctively longer, also polysiphonic and bearing lower order branches. Hydrothecal
internodes either straight or slightly geniculate. Hydrothecae alternately arranged in one plane; usually one hydrotheca per internode. Occasionally, however, internodes with two hydrothecae present, though in this situation second hydrotheca situated at the place usually
occupied by the gonothecae. Hydrotheca cylindrical, but markedly curved abcaudally. Adcauline hydrothecal wall typically adnate to internode for more than half its length. Free part of adcauline wall straight or slightly convex. Abcauline wall concave. Cusps of hydrothecal aperture sharp, separated by deep embayments. Hydrothecal rim with numerous renovations.
Depth and length is based on occurrence record; to be replaced with better refrence.
Life cycle and mating behavior
Maturità | Riproduzione | Deposizione | Uova | Fecundity | Larve
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. (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 |
Strumenti
Informazioni ulteriori
Trophic EcologyPrede
Dieta
Consumo di cibo
Razione
Predatori
Population dynamicsAccrescimento
Age/Size
Length-weight
Length-length
Length-frequencies
Mass conversion
Reclutamento
Abbondanza
Life cycleRiproduzioneMaturitàFecundityDeposizioneUovaEgg developmentLarveDinamica popolazioni larvali Human RelatedProfilo di acquacoltura
Stamps, Coins Misc.
Fonti Internet
Estimates based on models
Preferred temperature
(Ref.
115969): -1.2 - 0.8, mean -0.4 (based on 11 cells).
Vulnerability
Low vulnerability (10 of 100).