Rhynchobatus djiddensis (Forsskål, 1775)
Giant guitarfish
個人による観察記録の追加 Fish Watcher
| Native range | All suitable habitat | Point map | Year 2050 |
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| This map was computer-generated and has not yet been reviewed. |
| Rhynchobatus djiddensis AquaMaps Data sources: GBIF OBIS |
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) > Rhinopristiformes (Shovelnose rays) > Rhinidae (Wedgefishes)
Etymology: Rhynchobatus: Greek, rhingchos = snout + Greek, batis, -idos = a sting ray (Raja sp.) (Ref. 45335).
More on author: Forsskål.
Etymology: Rhynchobatus: Greek, rhingchos = snout + Greek, batis, -idos = a sting ray (Raja sp.) (Ref. 45335).
More on author: Forsskål.
環境：環境 / 気候帯 / 深さの範囲 / 分布範囲 生態学
海; 汽水性の 関連する礁; 深さの範囲 1 - 75 m (Ref. 106604). Tropical; 35°N - 35°S, 22°E - 83°E
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 Indian Ocean: restricted to the Red Sea and the tropical western Indian Ocean to South Africa. Also reported from Persian Gulf (Ref. 68964). Apparently misidentified with closely related species in the northern and eastern Indian Ocean and western Pacific (however, Ref. 5978 seems to present a reliable record from western Indonesia).
初回成熟時の長さ / サイズ / 重さ / 年齢
成熟: Lm ?, range 177 - ? cm
Max length : 310 cm TL オス/雌雄の選別がない; (Ref. 5578); 最大公表体重: 227.0 kg (Ref. 3919)
Max length : 310 cm TL オス/雌雄の選別がない; (Ref. 5578); 最大公表体重: 227.0 kg (Ref. 3919)
簡単な記述 検索表 | 形態学 | 形態計測学
A large guitarfish with large black eyespots on the pectoral bases, a distinctive black cross between the eyes, and rows of small white spots on the upper body; snout pointed and lower caudal lobe short (Ref. 5578). Olive-green above, white below (Ref. 5578). Mouths small and contain flattened, pavement-like teeth.
Body shape (shape guide): elongated.
Body shape (shape guide): elongated.
Occurs inshore and in shallow estuaries (Ref. 5578). Feeds on crabs, lobsters, bivalves, small fishes (Ref. 5578) and squids (Ref. 37816). Ovoviviparous (Ref. 50449). Takes crayfish and pilchard bait. Meat and fins sought after in Asian markets (Ref. 30573).
ライフサイクルと交尾行動 成熟 | 繁殖 | 放精 | 卵 | 生産力 | 幼生
Exhibit ovoviparity (aplacental viviparity), with embryos feeding initially on yolk, then receiving additional nourishment from the mother by indirect absorption of uterine fluid enriched with mucus, fat or protein through specialised structures (Ref. 50449). With 4 young, about 43-60 cm in length (Ref. 37816), born in the summer (Ref. 3919).
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 | 協力者
Compagno, L.J.V., 1986. Rhinobatidae. p. 128-131. In M.M. Smith and P.C. Heemstra (eds.) Smiths' sea fishes. Springer-Verlag, Berlin. (Ref. 3919)
IUCNのレッドリストの状況は (Ref. 130435: Version 2025-2 (Global))
絶滅寸前の危機的状況 (CR) (A2bd); Date assessed: 03 December 2018
人間に対する脅威
Harmless
人間の用途
水産業: 商業; ゲームフィッシュ: はい; 水族館・水槽: 公共の水族館
FAO - 水産業: 着陸; Publication: search | FishSource | 私達の周りの海
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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
好ましい温度 (参照 123201): 24.5 - 29.3, mean 27.1 °C (based on 304 cells).
系統多様性指数 (参照 82804): PD50 = 0.5024 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00372 (0.00166 - 0.00830), b=3.11 (2.91 - 3.31), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
栄養段階 (参照 69278): 3.6 ±0.6 se; based on diet studies.
回復力 (参照 120179): 低い, ４．５年～１４年の倍増期間の最小個体群 (Fec assumed to be <100).
Prior r = 0.28, 95% CL = 0.18 - 0.42, Based on 1 data-limited stock assessment.
栄養素 (Ref. 124155): Calcium = 7.69 [1.43, 29.34] mg/100g; Iron = 0.324 [0.076, 0.901] mg/100g; Protein = 19.9 [17.7, 22.1] %; Omega3 = 0.0794 [, ] g/100g; Selenium = 43.4 [12.2, 120.5] μg/100g; VitaminA = 20.3 [6.7, 58.7] μg/100g; Zinc = 0.733 [0.359, 1.509] mg/100g (wet weight);