Hydrozoa |
Leptothecata |
Sertulariidae
环境：氛围 / 气候带 / 深度上下限 / 分布范围
生态学
Sessile; 深度上下限 8 - 195 m (参考文献 7416). Polar
Circum-Antarctic.
首次成熟时的长度 / 大小 / 重量 / 年龄
成熟度: Lm ? range ? - ? cm Max length : 5.0 cm H 雄鱼/尚未辨别雌雄; (参考文献 7416)
5 cm high. Erect stem arising from disk-shaped hydrorhiza. Stem stiff, thickest basally and gradually thinning toward the apex, up to half its length or slightly more polysiphonic, distal part monosiphonic. Branching alternate over irregular distances or quite irregular. Principal branches polysiphonic at their base, the remaining branches are monosiphonic’ (Ref. 7417).
The present fragmented state of the colony does not allow the re-description of its general appearance. The colony has a discoid hydrorhiza and the stem is polysiphonic at least in the first 3 cm (the three basal most fragments of 1.4, 0.8 and 0.8 cm are polysiphonic). Polysiphonic stolons thick, more or less as main stem. Hydrothecae alternately arranged, approximately in one plane, hidden by polysiphonic development at basal part of stem. One hydrotheca per internode. Hydrotheca almost cylindrical, slightly abcaudally directed, adnate to internode for approximately two-thirds of its length. Free portion of adcauline hydrothecal wall slightly convex. Abcauline wall straight or slightly concave, mainly at its distal part. Hydrothecal aperture upwardly directed. Cusps sharp and separated by deep embayments. Rim of hydrothecal aperture with frequent and numerous renovations. Gonothecae oval, inserting at hydrothecal base. Gonothecal wall ringed, with 10 to 12 spirally arranged rings. Apical part of gonotheca with a long tube, widening distally and clearly surpassing the last ring.
Known at depths of 8 to 195 m on bottoms of boulders, stones and sand. Epibiothic on holothurians and epilithic on stones (Ref. 7416).
生命周期和交配行为
成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
Known with gonothecae in May and August.
主要参考文献
参考文献 | 合作者 | 合作者
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. (参考文献 7416)
世界自然保护联盟红皮书
(参考文献 130435: Version 2025-2 (Global))
Not Evaluated
Not Evaluated
对人类的威胁
Harmless
人类利用
FAO - Publication: search | FishSource |
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人口动态成长
最大年龄/尺寸
长度-重量关系
长短关系
体长-频率
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丰度
网络资源
基于模型的估算
渔业脆弱性
(参考文献 71543) |
Low vulnerability (10 of 100). |
