Hydrozoa |
Leptothecata |
Sertulariidae
Environment: milieu / climate zone / গভীরতার পরিসীমা / distribution range
বাস্তুসংস্থান
তলদেশ বিহারী; গভীরতার পরিসীমা 15 - 640 m (সূত্র 7414). Polar
Antarctic-Patagonian.
Length at first maturity / আকৃতি / Weight / Age
পরিপক্কতা : Lm ? range ? - ? cm Max length : 9.0 cm COLD পুরুষ/ লিঙ্গ অনিধর্ারিত ; (সূত্র 7414)
Monosiphonic colonies composed of a mass of branches and stems, irregularly branched in several planes and with anastomoses, up to 90mm in diameter, with the appearance of closely knitted net. Hydrothecae arranged in decussate pairs forming four longitudinal rows of hydrothecae. Hydrothecae immersed into the branches for approximately one-quarter of their volume and strongly curving outwards. Adcauline hydrothecal wall with a considerable free portion, adnate to internode for ca half or slightly more of its length. Free part of adcauline wall straight or slightly convex; abcauline wall concave. Hydrothecal aperture circular and tilted downwards; rim even and usually with numerous renovations. Female and male gonothecae present, both inserting individually at hydrothecal base. Female gonotheca urn-shaped; basal part ovoid, widening distally, apex contracted into a short neck bearing the aperture. Male gonotheca fusiform, with a distal, cone-shaped neck provided with a small, circular aperture.
Gonothecae with a few striae at base of neck.
Species had been found at depths 15 to 640 m on stony bottoms (Ref. 7414).
Life cycle and mating behavior
পরিপক্কতা | প্রজনন | ডিম ছাড়া | Eggs | ডিম্বধারন ক্ষমতা | Larvae
Fertile colonies are found in February.
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. (সূত্র 7414)
IUCN Red List Status
(সূত্র 130435: Version 2025-1)
CITES status (সূত্র 108899)
Not Evaluated
Not Evaluated
Threat to humans
Harmless
Human uses
| FishSource |
হাতিয়ার
আরো তথ্য
ট্রফিক বাস্তুতন্ত্র Food items (preys)
পথ্য উপাদান
খাদ্য গ্রহণ
শিকারী প্রাণী সমূহ
Population dynamicsবৃদ্ধি
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
প্রাচুর্য
Life cycleপ্রজনন পরিপক্কতা ডিম্বধারন ক্ষমতা ডিম ছাড়া EggsEgg developmentLarvae Physiologyঅম্লজান ব্যবহার
Human RelatedStamps, coins, misc.
ইন্টারনেট সুত্র
Estimates based on models
Preferred temperature
(Ref.
115969): 0.3 - 7.6, mean 5.4 (based on 227 cells).
Fishing Vulnerability
Low vulnerability (10 of 100).
