Hydrozoa |
Leptothecata |
Sertulariidae
Environment: milieu / climate zone / تغييرات عمق / distribution range
بوم شناسي
; تغييرات عمق 5 - 475 m (مرجع 7416). Polar
Antarctic.
Length at first maturity / Size / Weight / سن
بلوغ: Lm ? range ? - ? cm Max length : 5.0 cm WD جنس نر / بدون خواص جنسي; (مرجع 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
بلوغ | تولید مثل | تخم ریزی | Eggs | Fecundity | Larvae
Found fertile colonies from December to March, September and January. Material fertiles colonies were collected in January and February.
مآخذ اصلی
مراجع | هماهنگ كننده | همكاران
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. (مرجع 7416)
وضعيت در فهرست قرمز IUCN
(مرجع 130435: Version 2025-1)
وضعيت از نظر سايتس (مرجع 108899)
Not Evaluated
Not Evaluated
خطر برای انسان ها
Harmless
استفاده انسانی
| FishSource |
ابزارها
اطلاعات بيشتر
Trophic EcologyFood items (preys)
تركيب غذايي
مصرف غذايي
شکارچیان
Population dynamicsرشد
Max. ages / sizes
Length-weight rel.
Length-length rel.
نوسانات طولی
Mass conversion
فراواني
Life cycleتولید مثلبلوغFecundityتخم ریزیEggsنمو تخمLarvae PhysiologyOxygen consumption
Human RelatedStamps, coins, misc.
منابع اينترنتي
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).
