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Potamotrygon signata Garman, 1913

Parnaiba river stingray
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Elasmobranchii 板鰓亞綱 (鯊魚與魟魚) (sharks and rays) > Myliobatiformes (Stingrays) 鰩目 (Stingrays) > Potamotrygonidae (River stingrays) 河魟科 (River stingrays) > Potamotrygoninae
Etymology: Potamotrygon: Greek, potamos = river + Greek, trygon = a sting ray (Ref. 45335).
More on author: Garman.

Issue
The only species reported from northern Brazil to the east of the Amazonas basin. Nothing is known about its reproductive biology. Additional references: Fowler (1941, 1948), Menezes (1953), Hartel & Dingerkus (1997), Compagno & Cook (1995).

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

; 淡水 底中水層性. 熱帶

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South America: Parnaíba River basin.
南美洲: Parnaiba 河流域。

大小 / 重量 / 年齡

Maturity: Lm ?  range ? - ? cm
Max length : 30.0 cm WD 雄魚/尚未辨別雌雄; (Ref. 36687)

生物學特性     字彙 (例如 epibenthic)


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

南美洲: Parnaiba 河流域。

主要參考資料 Upload your references | 參考文獻 | 合作者 : Carvalho, Marcelo | 合作者

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 瀕危狀態 (Ref. 130435)

  資料不足 (DD) ; Date assessed: 24 June 2003

CITES

Appendix III: International trade cooperation

CMS (Ref. 116361)

Not Evaluated

對人類具威脅

  無害處的





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Estimates based on models

Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5000   [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).
營養階層 (Ref. 69278):  3.2   ±0.4 se; based on size and trophs of closest relatives
回復力 (Ref. 120179):  非常低的, 最小族群倍增時間超過14 年 (Assuming Fec<10).
Fishing Vulnerability (Ref. 59153):  High vulnerability (58 of 100).