Common names from other countries
Environment: milieu / climate zone / depth range / distribution range
Sinh thái học
; Mức độ sâu 42 - 1405 m (Ref. 7414). Polar
Antarctic: South Shetland, South Georgia and Antarctica.
Length at first maturity / Bộ gần gũi / Khối lượng (Trọng lượng) / Age
Maturity: Lm ? range ? - ? cm Max length : 16.0 cm H con đực/không giới tính; (Ref. 7414)
Stems erect, polysiphonic, up to 16 cm high, usually deprived of branches basally. Branching scarce, irregularly pinnate, usually simple and in various planes. Stem and branches sometimes with a few perisarc constrictions. Branches strongly narrowed basally. Perisarc frequently striated. Hydrothecae present over entire length of colony, though only visible in monosiphonic parts. Hydrothecae arranged in decussate verticils of three to six hydrothecae,
forming 6 to 12 longitudinal rows, cylindrical in lateral view, immersed into the branches for ca two-thirds of their volume and adcaudally almost fully adnate. In frontal view hydrotheca cylindrical at upper half, but distinctly widening basally; frequently constricted at about
half its length. Hydrothecal aperture circular and tilted downwards, forming an acute angle with long axis of branches. Rim even, usually with a shallow renovation. Hydrothecae lacking mushroom-shaped diaphragm. Female gonothecae present, originating at hydrothecal base. Gonotheca oval, slightly constricted apically to form a short neck. Gonothecal aperture
laterally depressed as the uneven rim is provided with two lobes, an adcauline and
a much larger abcauline lobe. Gonothecal wall provided with a series of striae.
Length based on stems height. Eurybathic species having found at depths 42 to 1405 m on bottoms of mud, stones and stones with mud (Ref. 7414).
Life cycle and mating behavior
Chín muồi sinh dục | Sự tái sinh sản | Đẻ trứng | Các trứng | Sự sinh sản | Ấu trùng
Fertile colonies are collected in January and December to February,
Peña Cantero, A.L. and W. Vervoort. 2003. (Ref. 7414)
IUCN Red List Status (Ref. 130435)
CITES status (Ref. 108899)
Not Evaluated
Not Evaluated
Threat to humans
Harmless
Human uses
| FishSource |
Các công cụ
Thêm thông tin
Age/SizeSự sinh trưởngLength-weightLength-lengthHình thái họcẤu trùngSự phong phú
Các nguồn internet
Estimates based on models
Preferred temperature
(Ref.
115969): -1.9 - 1.6, mean -0.3 (based on 1095 cells).
Vulnerability
Low vulnerability (10 of 100).
