Hydrozoa |
Leptothecata |
Sertulariidae
Environment: milieu / climate zone / গভীরতার পরিসীমা / distribution range
বাস্তুসংস্থান
তলদেশ বিহারী; গভীরতার পরিসীমা 150 - 150 m (সূত্র 7416). Polar
Antarctic Atlantic: Antarctica.
Length at first maturity / আকৃতি / Weight / Age
পরিপক্কতা : Lm ?  range ? - ? cm
Two fragments, larger 1 cm high, basally with a few stolons, probably indicating polysiphony in colony. Main fragment with 40 hydrothecae and giving rise to two secondary branches provided with five and 12 hydrothecae. Both second-order branches separated by ten hydrothecae and originating laterally at hydrothecal base on the same side of main fragment, though branches probably having spiral arrangement. Hydrothecae alternately arranged in one plane, set close together; hydrothecal distal part almost reaching basal part of following
hydrotheca and approximately middle of adcauline wall of alternate hydrotheca. Branch internodes sometimes indistinct. Hydrotheca almost cylindrical and adnate to internode for approximately two thirds of its adcauline length. Free portion of adcauline hydrothecal wall straight or slightly convex. Abcauline hydrothecal wall straight or with a slight basal swelling. Hydrothecal aperture directed upwards and provided with three blunt cusps separated by deep embayments.
Depth based on occurrence record; to be replaced with better reference.
Life cycle and mating behavior
পরিপক্কতা | প্রজনন | ডিম ছাড়া | Eggs | ডিম্বধারন ক্ষমতা | Larvae
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. (সূত্র 7416)
IUCN Red List Status
(সূত্র 130435: Version 2024-2)
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