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) >
Potamotrygonidae (River stingrays) > Potamotrygoninae
Etymology: Potamotrygon: Greek, potamos = river + Greek, trygon = a sting ray (Ref. 45335).
Eponymy: Dr Friedrich Gustav Jakob Henle (1809–1885) was a German physician, anatomist and zoologist whose main subjects were ichthyology and human biology. [...] (Ref. 128868), visit book page.
More on author: Castelnau.
Taxonomic Remarks
Reproductive biology unknown. A large female weighing some 15 kg gave birth to one pup of 12.5 cm DW, according to Rosa (1985a). Rare in scientific collections, but frequently commercialized by aquarium industry. Highly endemic distribution may render this species as being endangered. Additional references: Bertin (1939), Sérét & McEachran (1986), Compagno & Cook (1995), Rosa & Menezes (1996).
環境:環境 / 気候帯 / 深さの範囲 / 分布範囲
生態学
; 新鮮な水 底生の漂泳性; pH range: 5.8 - 7.2; dH range: 4 - 15. Tropical; 23°C - 28°C (Ref. 12468)
South America: Tocantins River basin (Tocantins and Araguaia rivers).
サイズ / 重さ / 年齢
成熟: Lm ?  range ? - ? cm
Max length : 45.0 cm WD オス/雌雄の選別がない; (Ref. 36687)
ライフサイクルと交尾行動
成熟 | 繁殖 | 放精 | 卵 | 生産力 | 幼生
Two to three live offsping are produced.
Compagno, L.J.V., 1999. Checklist of living elasmobranchs. p. 471-498. In W.C. Hamlett (ed.) Sharks, skates, and rays: the biology of elasmobranch fishes. Johns Hopkins University Press, Maryland. (Ref. 35766)
IUCNのレッドリストの状況は (Ref. 130435: Version 2025-2 (Global))
脆弱 (VU) (A2cde); Date assessed: 15 November 2024
人間の用途
用具
特記事項
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インターネットの情報源
モデルに基づく推定値
系統多様性指数 (参照 82804) |
PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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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) |
3.2 ±0.4 se; based on size and trophs of closest relatives |
回復力 (参照 120179) |
非常に低い, 14年以上の倍増期間の最小個体群 (Fec =2-3). |
漁業の脆弱性 (Ref. 59153) |
Moderate to high vulnerability (51 of 100). 🛈 |