分類 / 名前
共通名の | 類義語 | Catalog of Fishes(部類, 種) | ITIS | CoL | WoRMS | Cloffa
板鰓亜鋼(サメとエイ類) (sharks and rays) >
Rajiformes (Skates and rays) >
Arhynchobatidae (Softnose skates)
Etymology: Notoraja: Greek, noton = back + Latin, raja = fish, Raja sp. (Ref. 45335); longiventralis: Name from Latin 'longi' for long and 'ventralis'; referring to the very long anterior lobe of the pelvic fin.
環境：環境 / 気候帯 / 深さの範囲 / 分布範囲
生態学
海 深海浮遊性; 深さの範囲 660 - 953 m (Ref. 91035). Tropical; 14°S - 20°S, 166°E - 178°W (Ref. 114953)
Western Pacific: Fiji and Vanuatu.
サイズ / 重さ / 年齢
成熟: Lm ? range ? - ? cm
Max length : 43.4 cm TL オス/雌雄の選別がない; (Ref. 91035)
簡単な記述
検索表 | 形態学 | 形態計測学
This species (probably of medium size) is distinguished by the following set of characters: presence of a single rudimentary preorbital thorn; velvety dorsal and ventral surfaces of disc which are covered with fine denticles; long and slender tail is velvety and without enlarged thorns; lateral tail folds are not expanded distally, always narrower than tail width; nasal lobes not greatly expanded, width of nasal curtain 7.6-8.0% TL; relatively broad mouth, its width more than 66% of maximum width of nasal curtain; anterior pelvic-fin lobe is longer than posterior lobe; dorsal and ventral surfaces are dark, almost uniformly purplish grey; faint whitish spots over pores along the anterior margins of disc; total pectoral-fin radials 64-65, monospondylous centra 26-27, total diplospondylous centra 109-118, total number of centra 135-145 (Ref. 91035).
Body shape (shape guide): other (see remarks); Cross section: flattened.
A demersal species found on mid-insular slopes. Known from few specimens. Hatching size at ca. 17 cm TL. Life history unknown (Ref. 114953).
ライフサイクルと交尾行動
成熟 | 繁殖 | 放精 | 卵 | 生産力 | 幼生
Séret, B. and P.R. Last, 2012. New deep water skates of the genus Notoraja Ishiyama, 1958 (Rajoidei, Arhynchobatidae) from the southwest Pacific. Zoosystema, 34 (2):319-341. (Ref. 91035)
IUCNのレッドリストの状況は (Ref. 130435: Version 2025-2 (Global))
人間の用途
用具
特記事項
XMLをダウンロードして下さい
インターネットの情報源
モデルに基づく推定値
好ましい温度 (参照
123201): 1.8 - 2.7, mean 2.2 °C (based on 1549 cells).
系統多様性指数 (参照
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00550 (0.00279 - 0.01081), b=3.11 (2.94 - 3.28), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
栄養段階 (参照
69278): 3.7 ±0.7 se; based on size and trophs of closest relatives
回復力 (参照
120179): 手段, １．４年～４．４年の倍増期間の最小個体群 (Preliminary K or Fecundity.).
漁業の脆弱性 (Ref.
59153): Low to moderate vulnerability (33 of 100).
🛈
