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Plesiotrygon iwamae Rosa, Castello & Thorson, 1987

Long-tailed river stingray
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Image of Plesiotrygon iwamae (Long-tailed river stingray)
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drawing shows typical species in Potamotrygonidae.

分類 / Names 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: Plesiotrygon: Greek, plesios = near + Greek, trygon = a sting ray (Ref. 45335);  iwamae: Named in honor of the late Brazilian zoologist Satoko Iwama (Ref. 34195).

Issue
Food items consist of fishes (e.g. catfishes), insects, crustaceans and nematodes (Rosa et al., 1987). Nothing is known of its reproductive biology, but pups are free-swimming at least by 12 cm DL. Recent references: Barriga (1991), Wilkens & Dohse (1993), Compagno & Cook (1995), Lovejoy (1996).

Environment: milieu / climate zone / depth range / distribution range 生態学

; 新鮮な水 底生の. Tropical

分布 国々 | 国連食糧農業機関の区域 | エコシステム | 事件 | Point map | 導入 | Faunafri

South America: Upper to lower Amazon River basin, from Ecuador to Belém, Brazil, in the Napo, Solimões, Amazonas and Pará rivers.

サイズ / 重さ / 年齢

Maturity: Lm ?  range ? - ? cm
Max length : 58.0 cm WD オス/雌雄の選別がない; (Ref. 34195)

生物学     用語集 (例 epibenthic)

Feeds on small catfishes, insects, decapod crustaceans, and parasitic cestodes and nematodes (Ref. 34195).

Life cycle and mating behavior Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 幼生

主な参考文献 Upload your references | 参考文献 | コーディネーター : Carvalho, Marcelo | 協力者

Rosa, R.S., H.P. Castello and T.B. Thorson, 1987. Plesiotrygon iwamae, a new genus and species of neotropical freshwater stingray (Chondrichthyes: Potamotrygonidae). Copeia 1987(2):447-458. (Ref. 34195)

IUCNのレッドリストの状況は (Ref. 130435)

  攻撃されやすい (VU) (A2cd); Date assessed: 29 March 2021

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

人間に対する脅威

  Harmless





Human uses

FAO - Publication: search | FishSource |

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食品種目概要について
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Food consumptions
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捕食動物
Ecology
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Length-weight rel.
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体長組成
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Egg(s)
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エコシステム
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Anatomy
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脳
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Physiology
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Toxicities (LC50s)
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遺伝子の
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参考文献

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Estimates based on models

Phylogenetic diversity index (Ref. 82804):  PD50 = 0.7500   [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 (Ref. 69278):  3.4   ±0.46 se; based on food items.
回復力 (Ref. 120179):  非常に低い, １４年以上の倍増期間の最小個体群 (Assuming Fec<10).
Fishing Vulnerability (Ref. 59153):  High vulnerability (58 of 100).