Hydrozoa |
Leptothecata |
Sertulariidae
Environment: milieu / climate zone / Mức độ sâu / distribution range
Sinh thái học
; Mức độ sâu 5 - 475 m (Tài liệu tham khảo 7416). Polar
Antarctic.
Length at first maturity / Bộ gần gũi / Weight / Age
Chín muồi sinh dục: Lm ? range ? - ? cm Max length : 5.0 cm WD con đực/không giới tính; (Tài liệu tham khảo 7416)
Colonies monosiphonic, consisting either of a mass up to 5 cm in diameter, composed of interwoven stems and branches, or of small stems arising from the substratum. Mass-shaped colonies without a distinct stem. Branches continuously re-branching, usually irregularly in several planes, though sometimes with alternate arrangement. Branches frequently becoming anastomosing tendrils distally. Hydrothecae of lower-order branches in same plane as those of higher order. Stem and branches divided into internodes; one hydrotheca per internode. Hydrothecae alternately arranged in one or in two planes making an obtuse angle. Hydrotheca small, strongly abcaudally directed and adnate to internode for approximately half of its length, though hydrothecae with the free portion longer or shorter than adnate part may be observed. Hydrotheca with a distinct inflexion point where adcauline wall becomes free. Abcauline wall concave, usually with a slight swelling basally. Free part of adcauline hydrothecal wall straight or slightly convex; adnate part almost straight. Hydrothecal aperture
with three blunt cusps separated by shallow embayments. Rim of hydrothecal aperture with frequent renovations. Gonothecae fusiform, arising at hydrothecal base. Gonothecal walls
smooth or slightly wavy, with a short terminal neck, widening distally to the aperture.
Known at depth from 8 to 475 m on bottoms of rocks, gravel, muddy, detritus, sandy, stony boulders, and coarse (Ref. 7416).
Life cycle and mating behavior
Chín muồi sinh dục | Sự tái sinh sản | Đẻ trứng | Eggs | Sự sinh sản | Larvae
Found fertile colonies from December to March, September and January. Material fertiles colonies were collected in 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. (Tài liệu tham khảo 7416)
IUCN Red List Status
(Tài liệu tham khảo 130435: Version 2025-1)
CITES status (Tài liệu tham khảo 108899)
Not Evaluated
CMS (Tài liệu tham khảo 116361)
Not Evaluated
Threat to humans
Harmless
Human uses
| FishSource |
Các công cụ
Thêm thông tin
Sinh thái dinh dưỡngFood items (preys)
Thành phần thức ăn
Thành phần thức ăn
Các động vật ăn mồi
Population dynamicsSự sinh trưởng
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
Sự phong phú
Life cycleSự tái sinh sảnChín muồi sinh dụcSự sinh sảnĐẻ trứngEggsEgg developmentLarvae PhysiologyThành phần ô-xy
Human RelatedStamps, coins, misc.
Các nguồn internet
Estimates based on models
Preferred temperature
(Ref.
115969): -1.8 - 0, mean -1.3 (based on 329 cells).
Fishing Vulnerability
Low vulnerability (10 of 100).
