Hydrozoa |
Leptothecata |
Sertulariidae
環境：環境 / 気候帯 / 深さの範囲 / 分布範囲
生態学
Sessile; 深さの範囲 0 - 640 m (参照 7416). Polar
Circum-Antarctic.
初回成熟時の長さ / サイズ / 重さ / 年齢
成熟: Lm ? range ? - ? cm Max length : 2.5 cm H オス/雌雄の選別がない; (参照 7416)
Colonies composed of stolonal hydrorhiza giving rise to monosiphonic stems up to 2.5 cm high. Stems unbranched or scarcely branched; branches without anastomoses. Hydrothecate internodes long and thin, usually longer than hydrothecal length. Hydrotheca placed on distal third or quarter of internode. Hydrothecae alternately arranged in one plane, large and tubular. Adcauline hydrothecal wall adnate for approximately one-third of its length. Free part of adcauline hydrothecal wall straight or slightly convex. Abcauline hydrothecal wall straight or slightly concave. Cusps of hydrothecal aperture sharp and separated by deep embayments. Occasionally with hydrothecal renovations. Gonothecae ovoid, with short distal neck; walls smooth or slightly wavy, with indistinct striae.
Length based on colonies height. Known from tidal level depth to 640 m on bottoms of large rocks, mud and fragment of bryozoans. Also found on bottom of boulders, stones, sand, sandy, clay and silt (Ref. 7416).
ライフサイクルと交尾行動
成熟 | 繁殖 | 放精 | 卵 | 生産力 | 幼生
Found with gonothecae in February and March; materials were collected in January and February.
主な参考文献
参考文献 | コーディネーター | 協力者
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. (参照 7416)
IUCNのレッドリストの状況は
(参照 130435: Version 2025-2 (Global))
ワシントン条約ステータス (参照 108899)
Not Evaluated
Not Evaluated
人間に対する脅威
Harmless
人間の用途
FAO - Publication: search | FishSource |
用具
より多くの情報
人口動態成長
最大年齢/サイズ
長さ-重量比。
長短関係。
体長組成
質量変換
豊度
インターネットの情報源
モデルに基づく推定値
漁業の脆弱性
(参照 71543) |
Low vulnerability (10 of 100). |
