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Acipenseriformes (Sturgeons and paddlefishes) >
Polyodontidae (Paddlefishes)
Etymology: Polyodon: Greek, polys = a lot of + Greek, odous = teeth (Ref. 45335); spathula: From the words Poly, meaning many; don, tooth; and spathula, meaning blade or paddle (Ref. 10294).
More on author: Walbaum.
Milieu: milieu / Klimaatzone / Diepte / verspreidingsgebied
Ecologie
; zoet water demersaal; potamodroom (Ref. 130035); diepte 2 - ? m. Subtropical; 10°C - 18°C (Ref. 2060); 49°N - 29°N, 112°W - 77°W (Ref. 86798)
North America: Mississippi River basin from southwestern New York to Montana and south to Louisiana; Gulf Slope drainagaes from Mobile Bay in Alabama, to Galveston Bay in Texas, USA. Formerly in Great Lakes basin, probably extirpated. At least one country reports adverse ecological impact after introduction.
Grootte / Gewicht / Leeftijd
Maturiteit: Lm ?  range ? - ? cm
Max length : 221 cm TL mannelijk / geslacht onbekend; (Ref. 86798); common length : 120 cm TL mannelijk / geslacht onbekend; (Ref. 12193); max. gepubliceerd gewicht: 90.7 kg (Ref. 3221); max. gerapporteerde leeftijd: 55 Jaren (Ref. 46974)
Korte beschrijving
Determinatiesleutels | Morfologie | Morfometrie
Snout long, canoe-paddle-shaped; gill cover with large, fleshy, pointed flap (Ref. 86798).
Body shape (shape guide): elongated.
Adukts usually inhabit water deeper than 1.2 m in slow-flowing large rivers, lakes, and impoundments (Ref. 86798). They feed on plankton. The extended upper jaw (= paddle) may help to channel plankton into the mouth. Threatened due to over harvesting, habitat loss and pollution (Ref. 58490).
Page, L.M. and B.M. Burr, 2011. A field guide to freshwater fishes of North America north of Mexico. Boston : Houghton Mifflin Harcourt, 663p. (Ref. 86798)
Status op de Rode Lijst van het IUCN (Ref. 130435: Version 2025-2 (Global))
Gebruik door de mens
Visserij: commercieel; sportvis: ja; Aquarium: Publieke aquaria
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Schattingen op basis van modellen
Fylogenetische diversiteitsindex (Ref. 82804) |
PD50 = 1.2500 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.00646 (0.00431 - 0.00968), b=3.09 (2.98 - 3.20), in cm total length, based on LWR estimates for this species (Ref. 93245). |
Trofisch niveau (Ref. 69278) |
3.1 ±0.0 se; based on diet studies. |
Weerstandsvermogen (Ref. 120179) |
laag, minimale populatieverdubbelingstijd 4,5-14 jaar (tm=6-9; tmax=30). |
Kwetsbaarheid van de visserij (Ref. 59153) |
Very high vulnerability (85 of 100). 🛈 |
Prijsklasse (Ref. 80766) |
Unknown.
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Voedingsstoffen (Ref. 124155) |
Calcium = 29.6 [13.4, 59.0] mg/100g; Iron = 1.11 [0.65, 1.86] mg/100g; Protein = 18.1 [15.6, 20.7] %; Omega3 = 0.356 [0.139, 0.908] g/100g; Selenium = 71.4 [29.0, 167.5] μg/100g; VitaminA = 11.8 [3.6, 39.5] μg/100g; Zinc = 0.737 [0.499, 1.125] mg/100g (wet weight); |