Hydrozoa |
Leptothecata |
Sertulariidae
Environnement : milieu / zone climatique / profondeur / gamme de distribution
Écologie
Démersal; profondeur 86 - 402 m (Réf. 7416). Polar
Western Antarctic.
Longueur à la première maturité / Taille / Poids / Âge
Maturité: Lm ? range ? - ? cm
Description synthétique
Morphologie
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.
Known at depth from 86 to 402 m on muddy, sandy and fragments of bryozoans (Ref. 7416).
Cycle de vie et comportement reproducteur
Maturité | Reproduction | Frai | Œufs | Fécondité | Larves
Fertile colonies were collected on January and February.
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. (Réf. 7416)
Statut dans la liste rouge de l'IUCN
(Réf. 130435: Version 2025-2 (Global))
statut CITES (Réf. 108899)
Not Evaluated
Not Evaluated
Menace pour l'homme
Harmless
Utilisations par l'homme
FAO - Publication: search | FishSource |
Outils
Plus d'informations
Écologie trophiqueAliments (proies)
Composition du régime alimentaire
Consommation alimentaire
Prédateurs
Dynamique des populationsCroissance
Âges / tailles maximales
Longueur-poids rel.
Rel. longueur-longueur.
Fréquences de longueurs
Conversion de masse
Abondance
Cycle de vieReproductionMaturitéFéconditéFraiŒufsDéveloppement de l'œufLarves PhysiologieConsommation d'oxygène
Liées à l'hommeTimbres, pièces de monnaie, divers
Sources Internet
Estimations basées sur des modèles
Vulnérabilité de la pêche
(Réf. 71543) |
(0 of 100). |
