Pastinachus gracilicaudus Last & Manjaji-Matsumoto, 2010
Narrowtail stingray
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) > Myliobatiformes (Stingrays) > Dasyatidae (Stingrays) > Hypolophinae
Etymology: Pastinachus: Latin, pastinaca = a sting ray (Ref. 45335); gracilicaudus: Name from Latin 'gracilis' meaning slender, thin and 'cauda' for tail, appendage; referring to the slender appearance of the tail and narrow ventral cutaneous fold, as compared to other members of the genus Pastinachus.
More on authors: Last & Manjaji-Matsumoto.
Etymology: Pastinachus: Latin, pastinaca = a sting ray (Ref. 45335); gracilicaudus: Name from Latin 'gracilis' meaning slender, thin and 'cauda' for tail, appendage; referring to the slender appearance of the tail and narrow ventral cutaneous fold, as compared to other members of the genus Pastinachus.
More on authors: Last & Manjaji-Matsumoto.
環境：環境 / 気候帯 / 深さの範囲 / 分布範囲 生態学
海 底生の漂泳性; 深さの範囲 ? - 60 m (Ref. 90102). Tropical
分布 領土 | 国連食糧農業機関の区域 | エコシステム | 事件 | 目的のマップ | 導入 | Faunafri
Western Pacific: This species is reasonably common but patchily distributed in both Malaysian and Indonesian Borneo, including Sabah, Sarawak, and western and northeastern Kalimantan. Possibly more widespread in the Indo-Malay Archipelago, east to at least the Wallace Line and the the identity of a specimen collected off Beruwala (Sri Lanka) needs confirmation.
サイズ / 重さ / 年齢
簡単な記述 検索表 | 形態学 | 形態計測学
This medium-sized species (attaining about 75 cm DW) is distinguished by the following set of characters: snout rounded, not produced, angle more than 115°, apex largely naked and lacking enlarged denticles; disc length 83-89% DW; head length 38-41% DW; preoral length 15-17% DW; distance between nostrils 7-8% DW; distance between first gill slits 18-20% DW; tail compressed above mid-base of ventral cutaneous fold, its width 0.5-0.8 times its height; ventral fold low and slender, length 0.7-1.0 times DW, 17-22 times its depth below its mid-base, depth 2.0-3.6 times tail height at its mid-base; distance from anterior cloaca to sting 0.8-1 in precloacal length; two large, midscapular pearl thorns, usually preceded by a smaller irregular thorn; 120-122 pectoral-fin radials; monospondylous vertebral centra (exc. synarcual) 37-40 (Ref. 84288).
Body shape (shape guide): other.
Body shape (shape guide): other.
The depth occupied by this species is unknown as most material were collected in fish markets, but probably mainly coastal. A 69.5 cm DW adult male weighed ca 12 kg. Size at birth apparently variable; 83.0 cm DW female delivered a full term embryo with small umbilical scar; however, other retained specimens, 26.1 cm DW still had a substantial yolk sac, while in another 19.3 cm DW specimen the umbilical scar was barely visible. All these young specimens have large mid-scapular tubercles and well-developed denticles over most of the dorsal disc; a small embryo with yolk sac (16.5 cm DW) had prominent mid-scapular tubercles, but other denticles are just starting to form on the disc (Ref. 84288).
ライフサイクルと交尾行動 成熟 | 繁殖 | 放精 | 卵 | 生産力 | 幼生
主な参考文献
参考文献のアップロード | 参考文献 | コーディネーター : McEachran, John | 協力者
Last, P.R. and B.M. Manjaji-Matsumoto, 2010. Description of a new stingray, Pastinachus gracilicaudus sp. nov. (Elasmobranchii: Myliobatiformes), based on material from the Indo-Malay Archipelago. pp. 115-128. In Last, P.R., White, W.T. & Pogonoski, J.J. (eds.): Descriptions of new sharks and rays from Borneo. CSIRO Marine and Atmospheric Research Paper no. 32. (Ref. 84288)
CITES
Not Evaluated
人間に対する脅威
Harmless
人間の用途
FAO - Publication: search | FishSource |
より多くの情報
養殖生態
食料品（獲物）
餌の構成
摂食量
食料配給
捕食動物
食料品（獲物）
餌の構成
摂食量
食料配給
捕食動物
生態学
生態学
生態学
人口動態
成長のパラメーター
最大年齢/サイズ
長さ-重量比。
長短関係。
体長組成
質量変換
補充
豊度
成長のパラメーター
最大年齢/サイズ
長さ-重量比。
長短関係。
体長組成
質量変換
補充
豊度
ライフサイクル
繁殖
成熟
成熟度／エラ
生産力
放精
産卵群
卵
卵の開発
幼生
幼生の動力
繁殖
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成熟度／エラ
生産力
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卵
卵の開発
幼生
幼生の動力
解剖学
カマ
脳
オトリス
カマ
脳
オトリス
生理学
体組成
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泳ぐ速さ
視覚色素
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病気と寄生虫
毒性（LC50）
体組成
栄養素
酸素消費
水泳タイプ
泳ぐ速さ
視覚色素
フィッシュ・サウンド
病気と寄生虫
毒性（LC50）
用具
特記事項
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インターネットの情報源
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モデルに基づく推定値
系統多様性指数 (参照 82804): PD50 = 0.5312 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), in cm total length, based on all LWR estimates for this body shape (Ref. 93245).
栄養段階 (参照 69278): 3.7 ±0.6 se; based on size and trophs of closest relatives